{"id":2939,"date":"2026-03-23T07:47:14","date_gmt":"2026-03-23T07:47:14","guid":{"rendered":"https:\/\/lightingrecipe.com\/?p=2939"},"modified":"2026-03-23T09:24:31","modified_gmt":"2026-03-23T09:24:31","slug":"if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power","status":"publish","type":"post","link":"https:\/\/lightingrecipe.com\/de\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/","title":{"rendered":"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"967\" height=\"522\" src=\"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg\" alt=\"\" class=\"wp-image-2941\" srcset=\"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg 967w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1-300x162.jpg 300w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1-768x415.jpg 768w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1-18x10.jpg 18w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1-600x324.jpg 600w\" sizes=\"(max-width: 967px) 100vw, 967px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Zusammenfassung<\/strong><\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-012d50f794e79cf1c09451203cec9d1f\" style=\"font-size:15px\">When the entire industry is talking about healthy lighting, circadian lighting, and human-centric lighting, LED manufacturers who still only list luminous efficacy, CRI, color tolerance, and price in their datasheets are already half a generation behind.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-61912723eb4f2bc683dfb35e7812c69b\" style=\"font-size:15px\">CIE S 026 doesn\u2019t just introduce another term\u2014it requires upstream component companies to establish a specification language that can describe how light affects humans.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-a7acb2eef9bf854925cf51e08f928fd0\" style=\"font-size:15px\">The real key is not just melanopic metrics, but the full framework of the five \u03b1-opic DERs and EDIs. The next round of pricing power won\u2019t be determined by who shouts the loudest, but by who first integrates this capability into datasheets, builds it into their toolboxes, and connects it to the application chain.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-74fa3fa3483f8c45af65cd976a1fde3f\" style=\"font-size:15px\">Over the past two years, I\u2019ve felt increasingly strongly that: Many LED companies talk about healthy lighting, but their datasheets are still stuck in the previous era.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-fbadd91d59770cdbb7351bef32e0e528\" style=\"font-size:15px\">What are they still comparing?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-e817156599ca1ae4fa76d6a9a72c20ee\" style=\"font-size:15px\">Luminous efficacy<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-a9c7594d77790010ce24615440af5e73\" style=\"font-size:15px\">CRI<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-8a6d8dccbe8e2ea7293bed6ff05faf82\" style=\"font-size:15px\">R9<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-a48e27d0954538066c39ec346eb1100d\" style=\"font-size:15px\">SDCM<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-a1e11599fc74120e5545e5d48a221c9e\" style=\"font-size:15px\">Price<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-6fd3f98bd5e05690ec6f829443aa8d1e\" style=\"font-size:15px\">A bit further, they start discussing TM-30, low-frequency flicker, and light quality. These are all correct, but still not enough.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-61c7518edfb4f7ec0f4e4097aef38c6c\" style=\"font-size:15px\">Because if the industry is saying that light not only allows people to see, but also affects circadian rhythm, alertness, mood, sleep, recovery, and even long-term health\u2014then why do many upstream LED datasheets still use a language that almost entirely ignores humans?<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-c88e2748db964d7478ca04d200c5c889\" style=\"font-size:15px\">That is the core problem.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-35869c5251bbfcdcfa6cd704d9c0f012\" style=\"font-size:15px\">It\u2019s not whether CIE S 026 is important. It\u2019s not whether melanopic or \u03b1-opic metrics are difficult. It\u2019s that if upstream component companies themselves don\u2019t yet have the ability to translate how light affects humans into deliverable, calculable, comparable, and designable datasheet language, then much of the healthy lighting industry is still just slogans.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-5b581fe0eba26317bf681210acca0ca5\" style=\"font-size:15px\">This may sound harsh, but I think it\u2019s time to speak firmly.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">1. Many companies misunderstand: CIE S 026 is not just a marketing talking point<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-26de44022c3f25f38c4cb5b404f27ab7\" style=\"font-size:15px\">Many companies now know about melanopic EDI, add \u03b1-opic metrics in presentations, and some even want to put these directly into LED datasheets. The direction is correct. But many implementations clearly show a lack of real understanding of CIE S 026.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-51abb3afd0f21a8e5f0c9b0b4bce35a8\" style=\"font-size:15px\">The biggest mistake is treating it as just another premium parameter for marketing. This is dangerous. <\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-c6c259d86aa98480bf0b62befffff0ce\" style=\"font-size:15px\">CIE S 026 is not a new marketing badge or a certification label to stick on a package. It is essentially a metric language weighted by retinal photoreceptors, pushing the description of \u201clight for humans\u201d from a vague concept to a framework that can be precisely calculated.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-51f5b78dbfe27f430643b1ac5049a69b\" style=\"font-size:15px\">Once you treat it as a measurement language, you realize: It\u2019s not just about adding a melanopic number to a datasheet.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-27b35d9cc6b3becd45c5ca1544307d4c\" style=\"font-size:15px\">It forces LED upstream companies to answer a fundamental question: Are you selling merely a light-emitting semiconductor, or a spectral engine that can be invoked by physiological models?<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-ec45c6c4dbb6a9a712dc13ebee597b64\" style=\"font-size:15px\">The difference is huge.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">2. Correct the fundamental misunderstanding: EDI is not just melanopic<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-29ec52b4b5ec2cf950edcb89c51e5593\" style=\"font-size:15px\">I\u2019ve noticed that even many industry insiders still hold a vague understanding: They think DER involves the five \u03b1-opic metrics, but EDI seems mainly just melanopic EDI. This is common in practice but technically incomplete.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-65a843e27e40b3eb7f0a8b5dd95f19da\" style=\"font-size:15px\">According to the original logic of CIE S 026, it\u2019s clear:  Not only DER has five types, EDI itself also has five types.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-f1b3514e47aa2edd366b9f8b2f7c9bad\" style=\"font-size:15px\">Corresponding to the five retinal photoreceptor channels:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-bf088d25fd4dcd6c417f6efafc136730\" style=\"font-size:15px\">S-cone-opic<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-9f19f81bc2f94af12aa2ee55e8a49302\" style=\"font-size:15px\">M-cone-opic<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-c337fca8acff622132bb6b90a7c0d1f5\" style=\"font-size:15px\">L-cone-opic<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-1b8743e68366eb9369b7f94347189261\" style=\"font-size:15px\">Rhodopic<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-966cd000c852f634c40059088d227308\" style=\"font-size:15px\">Melanopic<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-add333d4ff8485a614aecefd640d3dc2\" style=\"font-size:15px\">Each theoretically has:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-61a3e0da5ac507bbca959560216c1568\" style=\"font-size:15px\">\u03b1-opic irradiance<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-d3668bf0d2f9989153e47a86ce5c9af3\" style=\"font-size:15px\">\u03b1-opic DER<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-f465005c4da3d658110cc40509516284\" style=\"font-size:15px\">\u03b1-opic EDI<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b1cca091c9a7a77ab98dbe3e0912a3e7\" style=\"font-size:15px\">In other words, EDI is not a single value, but a set of values.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-7064c38f5ff617d1f03546dfd20c3b8b\" style=\"font-size:15px\">Because in recent applications like circadian rhythm, WELL, daytime alertness, and nighttime suppression, melanopic EDI has been most frequently highlighted, the market has gradually come to believe that EDI \u2248 melanopic EDI.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-d8de9176f463a6c7631529f5ebfac4e8\" style=\"font-size:15px\">This misunderstanding may seem like a terminology issue, but in LED datasheet logic, it directly leads to misrepresentation. Simplifying EDI to a single melanopic metric compresses CIE S 026\u2019s full five-dimensional framework into a single-line narrative.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-0b930a8beabc49579b7e2072421415c7\" style=\"font-size:15px\">This is exactly what I most want to avoid.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">3. What the LED industry fears most is not complexity, but \u201cpretending it\u2019s simple\u201d<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-4568bf0230310c1d3aef58f69aba7bd2\" style=\"font-size:15px\">One of the LED industry\u2019s greatest capabilities is engineering complex problems. When LEDs replaced traditional lighting, it wasn\u2019t because LEDs were simple\u2014they were highly complex.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-6258ee860ce20f8db7cbe8f008884c93\" style=\"font-size:15px\">They have electrical characteristics, thermal behavior, lumen depreciation, color drift, binning, package differences, driver coupling, system efficiency, lifetime models, and reliability risks.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-1b99c2656e85aeb5f3ec8fb24244cc7d\" style=\"font-size:15px\">The industry matured because a common language was built to transform this complexity into specifications and tools usable by customers, engineers, FAE, and designers.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-e2d460e93be0361ecd6d23d88236af8e\" style=\"font-size:15px\">This is the true brilliance of the LED industry.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-20e6fc8a91be3b6729cf7fe438da6f6a\" style=\"font-size:15px\">So, if \u03b1-opic, EDI, and DER enter the component ecosystem, my position is clear: Don\u2019t fear complexity. Fear oversimplifying the five-dimensional system into a single value for marketing.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-512eca8f1412f8a0a2782b0320ec31e6\" style=\"font-size:15px\">That\u2019s not simplification. That\u2019s dumbing it down.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-6fa7f47c503059077cd4128675d4f4a5\" style=\"font-size:15px\">Because if upstream companies simplify multi-dimensional photobiological metrics into \u201chigher melanopic = more advanced,\u201d two things will happen:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-2202a46e070df462b24ce273aa2f9fb6\" style=\"font-size:15px\">Marketing will over-hype.<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-6f9d9325e66680b2246616c2089c2c4c\" style=\"font-size:15px\">Applications will misuse it.<\/li>\n<\/ol>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b2af96fd4c6de3be8dc6221822d683da\" style=\"font-size:15px\">Ultimately, the credibility of both companies and the healthy lighting field suffers.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">4. DER and EDI play fundamentally different roles for LED manufacturers<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-9a074849e16daf4a7bc5350370b8d9f0\" style=\"font-size:15px\">Let me put this more directly: If you are an LED chip manufacturer, what should truly be prioritized in the main datasheet is the five \u03b1-opic DERs; EDI, on the other hand, should be presented as a conditional, normalized result.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-a138cc4d318b7ae0dab5818bbe4aec0e\" style=\"font-size:15px\">Why?<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-76d7ddde12d60a1a8ab7654fb75c029c\" style=\"font-size:15px\">Because DER is closer to what? It is closer to the intrinsic properties of the LED\u2019s spectrum itself.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-2afece81aa3c0548f079e414e66796cf\" style=\"font-size:15px\">Once the SPD is defined, the DER is basically set. It is a source-level spectral characteristic.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-aa8965429a9613f41ccb4a3b0790c454\" style=\"font-size:15px\">And what about EDI? EDI is not an absolute constant independent of conditions. It is an expression of equivalent daylight illuminance based on a given photopic illuminance.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-39f1ed65e419fd95b0134440bfc443e3\" style=\"font-size:15px\">To put it plainly: DER is more like a raw material property; EDI is more like a converted result under specific usage conditions.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-d762f78abf66f3651587bf4ee38e1f35\" style=\"font-size:15px\">It\u2019s the same as you cannot treat the center illuminance of an LED at a certain distance as an intrinsic property of the chip.<br>Similarly, you should not package an EDI value that does not specify its conditions as the LED\u2019s absolute capability.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-806dffbda760056b88623a8ffa614ae4\" style=\"font-size:15px\">So, if a datasheet says: melanopic EDI = 86 lx<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-8cfc4b2ccb3c132adc3fd9af98cb4e41\" style=\"font-size:15px\">but does not specify that this is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-fefcb57b7c955390d0b71d481dc328d4\" style=\"font-size:15px\">Corresponding photopic illuminance<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-98d5aea9b93a2a41e78ea6173a6ee236\" style=\"font-size:15px\">SPD resolution used<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-3fccc386daf3cc937469183f3f937529\" style=\"font-size:15px\">Measurement conditions (If \/ Tj)<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-cf643bbdf4a24a805291ae67f3be463d\" style=\"font-size:15px\">Whether it\u2019s normalized<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-64066eeca9d6afc95736162cd67f8904\" style=\"font-size:15px\">Whether it\u2019s a source-level conversion<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-13ed33711ee44d64a2de9608fc9348d7\" style=\"font-size:15px\">Then this number, strictly speaking, is technically questionable.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-64b39ffcec8f8ba55811c60e30749c6e\" style=\"font-size:15px\">Not because EDI cannot be listed, but because presenting EDI without specifying the conditions is, in itself, incomplete.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">5. What upstream companies truly lack is not a new parameter, but a fifth model<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-45a4d3b9fd0bf4f4d65ff9d2724a844d\" style=\"font-size:15px\">I want to explain this in a more systematic way. Today, mature LED companies have basically already established four sets of models:<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-c554035ad09cf9de4bc8d13d656bdb62\" style=\"font-size:15px\"><strong>First set: Electrical model<\/strong><br>If, Vf, power consumption, drive range, dimming characteristics.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-491dec7869a44eaff38ec2d569f01d4e\" style=\"font-size:15px\"><strong>Second set: Thermal model<\/strong><br>Tc, Tj, thermal resistance, derating curves, thermal failure risks, lifetime boundaries.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-5f9d5f424077fe5285c33690f26c0229\" style=\"font-size:15px\"><strong>Third set: Optical model<\/strong><br>Luminous flux, CCT, chromaticity coordinates, binning, CRI, TM-30, color shift, spectrum.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-559853fcdb9d9b805f43076f0e2ccf23\" style=\"font-size:15px\"><strong>Fourth set: Reliability model<\/strong><br>LM-80, maintenance factor, package stability, failure rate, environmental adaptability.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-10063444c033348c1475ddfd24314f82\" style=\"font-size:15px\">However, today, if a company truly wants to move toward \u201chealthy lighting,\u201d \u201ccircadian lighting,\u201d and a \u201chigh-quality spectral value chain,\u201d it must add a fifth set:<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-7e25e990eb807f08aaea5f3c14da4304\" style=\"font-size:15px\"><strong>Fifth set: Physiological spectral model<\/strong><\/p>\n\n\n\n<p class=\"has-link-color wp-elements-ab714f041801404a8040a9dc172a60f0\" style=\"font-size:15px\">This is the real requirement that CIE S 026 places on upstream LED manufacturers. It\u2019s not about adding a slide of \u03b1-opic to your PPT. It\u2019s about starting to build capabilities like:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-fe91c53cd7388fbaab30d0b54cec6051\" style=\"font-size:15px\">Five \u03b1-opic DERs<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-62af873572780b7fcef67bb06fd9251d\" style=\"font-size:15px\">Five \u03b1-opic EDIs<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-40cd903a1678a4bd6773191cf1d5e776\" style=\"font-size:15px\">Their relationship with the SPD<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-8a92098550c3015a537b7f6afefe1f96\" style=\"font-size:15px\">Their dependence on current, junction temperature, aging, and binning<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-5b64c08981eff523b22363d1588e22ad\" style=\"font-size:15px\">How they feed into mixed light, dimming, scene algorithms, and downstream application design<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b60b30ce554116f72402a81b5d670b33\" style=\"font-size:15px\">This is what it means to be a company that truly understands CIE S 026. Not just one that says, \u201cOur products support healthy lighting.\u201d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">6. How a leading LED company writes datasheets<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-a533caf834e86965ff7dfbc19e54b7be\" style=\"font-size:15px\">Let me give a very practical benchmark. In the future, when judging whether an LED chip company is truly ahead, don\u2019t first look at whether their presentations mention human-centric lighting.<\/p>\n\n\n\n<p>First, look at how they write their datasheets. I believe a company that is genuinely moving forward will structure it in at least three layers.<\/p>\n\n\n\n<p><strong>Layer 1: Establish the five \u03b1-opic DERs in the main datasheet<\/strong><\/p>\n\n\n\n<p>This is the core foundation. It\u2019s not just about writing melanopic.<br>Step by step, you should establish standard outputs for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S-cone-opic DER<\/li>\n\n\n\n<li>M-cone-opic DER<\/li>\n\n\n\n<li>L-cone-opic DER<\/li>\n\n\n\n<li>Rhodopic DER<\/li>\n\n\n\n<li>Melanopic DER<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-cb3d254647f199b9ca519a6d06aa7fa5\" style=\"font-size:15px\">Because this is the most basic respect for CIE S 026. You can\u2019t claim to be doing \u03b1-opic measurements but end up only providing the single most convenient number for marketing.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-91f837daab3fc49d2ee42e29aa390774\" style=\"font-size:15px\"><strong>Layer 2: EDI can be listed, but it must be \u201cconditional EDI\u201d<\/strong><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b8b7b07d48b5036099ec758998ac8070\" style=\"font-size:15px\">For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-1c10c1cb9d75fce80edbcec8502d1034\" style=\"font-size:15px\">Melanopic EDI @ 100 lx<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-9867eafcb1cafd17c6938c579c022c90\" style=\"font-size:15px\">Melanopic EDI @ 300 lx<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-b1699f011a117521da2eb8c2dbbc1fe0\" style=\"font-size:15px\">Or even the five \u03b1-opic EDIs @ 100 lx \/ 300 lx \/ 500 lx<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-2d5657ac8dfdba2543cb229056dc36ca\" style=\"font-size:15px\">This approach is much more reasonable. Because it acknowledges that EDI is a result calculated based on photopic illuminance, rather than pretending it\u2019s an absolute value independent of conditions.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-7dd8a76be616eaaa9a09f5a2f340f4a3\" style=\"font-size:15px\"><strong>Layer 3: Connect \u03b1-opic values with electrical-thermal drift, aging, and binning<\/strong><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-ce4b8f4f847090cfa243bfcc4721de52\" style=\"font-size:15px\">This is what truly differentiates a company. If your \u03b1-opic values don\u2019t change with If, Tj, or aging, there are only two possibilities:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-b59ee5729c949eb3a0f0ee703c8ffdd9\" style=\"font-size:15px\">Either your product is unrealistically violating physics,<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-feae77892ff63b8dd1af01f88bc945eb\" style=\"font-size:15px\">Or you haven\u2019t really started modeling yet.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-8373f9a77df5ed855b5530338d55c337\" style=\"font-size:15px\">Therefore, future higher-level datasheets should start including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-735d6a24ad6618fdd7736233824629dc\" style=\"font-size:15px\">\u03b1-opic DER vs. current<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-3186c2adfb06d279899f23cfac3e88b4\" style=\"font-size:15px\">\u03b1-opic DER vs. junction temperature<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-aba3f3a0b1ba1e2436b8bdcb83e7c894\" style=\"font-size:15px\">\u03b1-opic shift after aging<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-6d38733c9517096021351b93e1c3f800\" style=\"font-size:15px\">\u03b1-opic distribution by bin<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-70d868f506497532cac207e6a505118a\" style=\"font-size:15px\">At this point, \u03b1-opic truly transforms from a concept into a deliverable capability.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">7. Beware the \u201cmelanopic worship\u201d<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b48cb36dba1aba9f1142f8bbcb84f19e\" style=\"font-size:15px\">I can actually understand why the market quickly focuses on melanopic. Because it\u2019s the easiest to talk about. And it\u2019s the easiest to connect with applications like daytime alertness, nighttime suppression, WELL, and circadian rhythm.<\/p>\n\n\n\n<p>But I want to be very honest: If the entire industry ends up reducing CIE S 026 to a single competition of \u201cwhose melanopic is higher,\u201d we are just repeating the old lm\/W race of the past, only with a trendier term.<\/p>\n\n\n\n<p>This is not an industry upgrade. This is just a slogan upgrade. Because a true light environment is never about a single channel. And real human responses can never be summarized by a single value.<\/p>\n\n\n\n<p>So I strongly advocate one thing: In communication, you can start with melanopic; but at the technical foundation, you must return to the complete framework of the five \u03b1-opic channels.<\/p>\n\n\n\n<p>Otherwise, you will inevitably see a bunch of products with \u201chigh melanopic but poor overall light quality,\u201d or marketing claims that \u201coverpromise physiological effects based on a single value.\u201d<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-391d59b5e2f14b29aac99f9ecb7d752e\" style=\"font-size:15px\">That is not the future I want to see.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">8. This is not a technical detail\u2014it\u2019s the next round of pricing power for upstream companies<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-75f8541f6264ffb38358a0e82eb76532\" style=\"font-size:15px\">Many people might read this article as a purely technical topic. I don\u2019t see it that way. I believe this is actually a matter of industry influence and discourse power.<\/p>\n\n\n\n<p>Over the past decade, how did upstream LED companies capture value? It wasn\u2019t about who told the best story. It was about who controlled:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-42ba9533b32fae526f8ca5ed0421226f\" style=\"font-size:15px\">Better packaging capabilities<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-a9b09358d70aba3d4b4cb32bba68fe3b\" style=\"font-size:15px\">More stable binning<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-c0f11dbecb038a7ab9abd0f960dd549f\" style=\"font-size:15px\">More mature reliability models<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-4e218e3402223f737c789617768243af\" style=\"font-size:15px\">More complete application support<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-becf0423320d9861269fcc86f7b5d489\" style=\"font-size:15px\">More efficient specification language<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-cde2c17c315135ecba3fdbd15be1a6b1\" style=\"font-size:15px\">Now, in the era of CIE S 026, this game hasn\u2019t changed. Only the dimension of competition has been upgraded.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-144bcb4dc78dee9066c7e65ecbc52118\" style=\"font-size:15px\">In the future, truly high-value LED chip companies won\u2019t just be able to say, \u201cWe have this wavelength, this formulation, this CRI.\u201d They will be able to say: Our LED is not only efficient, color-accurate, and reliable; its five \u03b1-opic characteristics are definable, repeatable, computable, and integrable into system design.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b28850d3f655fd404d28a0974f1bfa0e\" style=\"font-size:15px\">Once you reach this level, what you\u2019re selling is no longer just a chip. What you\u2019re selling is: A spectral capability that downstream applications can directly invoke. And this is what truly supports the next wave of premium value.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">9. Don\u2019t rush to claim \u201chealthy lighting\u201d\u2014first write the datasheet right<\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-e534246e49254defb9c4afb812446926\" style=\"font-size:15px\">If I were to give LED chip manufacturers the most direct advice, I would say: Don\u2019t rush to shout \u201cwe understand healthy lighting\u201d at your booth. First, go back and look at your datasheet.<\/p>\n\n\n\n<p>If your datasheet can still only describe:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-793f1682d286129c10828aae09a577c0\" style=\"font-size:15px\">How bright<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-9efc801581c331bc6288c2c5e6bb935e\" style=\"font-size:15px\">How efficient<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-ec37862259a5d4de6abc6b0033abd611\" style=\"font-size:15px\">How white<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-23363a5a20e4f95069bb7600a3222bfe\" style=\"font-size:15px\">How high the CRI<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-81f406816aaad74a7517e20ab044edbe\" style=\"font-size:15px\">How low the color deviation<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-f8d54616c4ea91cb36c75380fb376351\" style=\"font-size:15px\">But cannot describe:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-49deffbc6963bacd87d78553448457ce\" style=\"font-size:15px\">What the five \u03b1-opic characteristics of this LED are<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-0574f1951f67ae445eec4f2219c1d075\" style=\"font-size:15px\">How DER and EDI are defined<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-7a6d570046eebf49f2e243b4bf66a32b\" style=\"font-size:15px\">How they couple with current, junction temperature, and aging<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-9a05ea4c87f2b8aa970d727f7012e434\" style=\"font-size:15px\">How downstream customers can integrate it into scenes and human models<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-d71e0c9eb52df6fbf6981a25e3fa0575\" style=\"font-size:15px\">Then you are still some distance away from being a true \u201chealthy-light component company.\u201d Not because your technology isn\u2019t sufficient. But because your industry language hasn\u2019t been upgraded.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-dfc2ed12f804209e320ae203fd7aaf39\" style=\"font-size:15px\">And I believe, the next wave of companies that will truly gain discourse power won\u2019t be the ones shouting slogans first,<br>but the ones who first take this language\u2014and write it into the datasheet, build it into the toolbox, integrate it into the application chain, and turn it into deliverable capability.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-9f6a0a6b723f56a78f0ac27ca7bdb482\" style=\"font-size:15px\">This is the real significance of CIE S 026 for upstream LED manufacturers. It\u2019s not about printing a few extra parameters. It\u2019s about rewriting the rules.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h4>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-e663d04d9e66d068550db83ab0b9ff20\" style=\"font-size:15px\">In the future, customers aren\u2019t just buying lumens.<br>They\u2019re buying whether an LED can be accurately integrated into human models.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"256\" src=\"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036-1024x256.jpg\" alt=\"\" class=\"wp-image-2283\" srcset=\"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036-1024x256.jpg 1024w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036-300x75.jpg 300w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036-768x192.jpg 768w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036-1140x285.jpg 1140w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036-600x150.jpg 600w, https:\/\/lightingrecipe.com\/wp-content\/uploads\/2025\/11\/1760450781036.jpg 1400w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>Summary When the entire industry is talking about healthy lighting, circadian lighting, and human-centric lighting, LED manufacturers who still only list luminous efficacy, CRI, color tolerance, and price in their datasheets are already half a generation behind. CIE S 026 doesn\u2019t just introduce another term\u2014it requires upstream component companies to establish a specification language that can describe how light affects humans. The real key is not just melanopic metrics, but the full framework of the five \u03b1-opic DERs and EDIs. The next round of pricing power won\u2019t be determined by who shouts the loudest, but by who first integrates this capability into datasheets, builds it into their toolboxes, and connects it to the application chain. Over the past two years, I\u2019ve felt increasingly strongly that: Many LED companies talk about healthy lighting, but their datasheets are still stuck in the previous era. What are they still comparing? A bit further, they start discussing TM-30, low-frequency flicker, and light quality. These are all correct, but still not enough. Because if the industry is saying that light not only allows people to see, but also affects circadian rhythm, alertness, mood, sleep, recovery, and even long-term health\u2014then why do many upstream LED datasheets still use a language that almost entirely ignores humans? That is the core problem. It\u2019s not whether CIE S 026 is important. It\u2019s not whether melanopic or \u03b1-opic metrics are difficult. It\u2019s that if upstream component companies themselves don\u2019t yet have the ability to translate how light affects humans into deliverable, calculable, comparable, and designable datasheet language, then much of the healthy lighting industry is still just slogans. This may sound harsh, but I think it\u2019s time to speak firmly. 1. Many companies misunderstand: CIE S 026 is not just a marketing talking point Many companies now know about melanopic EDI, add \u03b1-opic metrics in presentations, and some even want to put these directly into LED datasheets. The direction is correct. But many implementations clearly show a lack of real understanding of CIE S 026. The biggest mistake is treating it as just another premium parameter for marketing. This is dangerous. CIE S 026 is not a new marketing badge or a certification label to stick on a package. It is essentially a metric language weighted by retinal photoreceptors, pushing the description of \u201clight for humans\u201d from a vague concept to a framework that can be precisely calculated. Once you treat it as a measurement language, you realize: It\u2019s not just about adding a melanopic number to a datasheet. It forces LED upstream companies to answer a fundamental question: Are you selling merely a light-emitting semiconductor, or a spectral engine that can be invoked by physiological models? The difference is huge. 2. Correct the fundamental misunderstanding: EDI is not just melanopic I\u2019ve noticed that even many industry insiders still hold a vague understanding: They think DER involves the five \u03b1-opic metrics, but EDI seems mainly just melanopic EDI. This is common in practice but technically incomplete. According to the original logic of CIE S 026, it\u2019s clear: Not only DER has five types, EDI itself also has five types. Corresponding to the five retinal photoreceptor channels: Each theoretically has: In other words, EDI is not a single value, but a set of values. Because in recent applications like circadian rhythm, WELL, daytime alertness, and nighttime suppression, melanopic EDI has been most frequently highlighted, the market has gradually come to believe that EDI \u2248 melanopic EDI. This misunderstanding may seem like a terminology issue, but in LED datasheet logic, it directly leads to misrepresentation. Simplifying EDI to a single melanopic metric compresses CIE S 026\u2019s full five-dimensional framework into a single-line narrative. This is exactly what I most want to avoid. 3. What the LED industry fears most is not complexity, but \u201cpretending it\u2019s simple\u201d One of the LED industry\u2019s greatest capabilities is engineering complex problems. When LEDs replaced traditional lighting, it wasn\u2019t because LEDs were simple\u2014they were highly complex. They have electrical characteristics, thermal behavior, lumen depreciation, color drift, binning, package differences, driver coupling, system efficiency, lifetime models, and reliability risks. The industry matured because a common language was built to transform this complexity into specifications and tools usable by customers, engineers, FAE, and designers. This is the true brilliance of the LED industry. So, if \u03b1-opic, EDI, and DER enter the component ecosystem, my position is clear: Don\u2019t fear complexity. Fear oversimplifying the five-dimensional system into a single value for marketing. That\u2019s not simplification. That\u2019s dumbing it down. Because if upstream companies simplify multi-dimensional photobiological metrics into \u201chigher melanopic = more advanced,\u201d two things will happen: Ultimately, the credibility of both companies and the healthy lighting field suffers. 4. DER and EDI play fundamentally different roles for LED manufacturers Let me put this more directly: If you are an LED chip manufacturer, what should truly be prioritized in the main datasheet is the five \u03b1-opic DERs; EDI, on the other hand, should be presented as a conditional, normalized result. Why? Because DER is closer to what? It is closer to the intrinsic properties of the LED\u2019s spectrum itself. Once the SPD is defined, the DER is basically set. It is a source-level spectral characteristic. And what about EDI? EDI is not an absolute constant independent of conditions. It is an expression of equivalent daylight illuminance based on a given photopic illuminance. To put it plainly: DER is more like a raw material property; EDI is more like a converted result under specific usage conditions. It\u2019s the same as you cannot treat the center illuminance of an LED at a certain distance as an intrinsic property of the chip.Similarly, you should not package an EDI value that does not specify its conditions as the LED\u2019s absolute capability. So, if a datasheet says: melanopic EDI = 86 lx but does not specify that this is: Then this number, strictly speaking, is technically questionable. Not because EDI cannot be listed, but because presenting EDI without specifying the conditions is, in itself, incomplete. 5. What upstream companies truly lack is not a new parameter, but a fifth model I want to explain this in a more systematic way. Today, mature LED companies have basically already established four sets of models: First set: Electrical modelIf, Vf, power consumption, drive range, dimming characteristics. Second set: Thermal modelTc, Tj, thermal resistance, derating curves, thermal failure risks, lifetime boundaries. Third set: Optical modelLuminous flux, CCT, chromaticity coordinates, binning, CRI, TM-30, color shift, spectrum. Fourth set: Reliability modelLM-80, maintenance factor, package stability, failure rate, environmental adaptability. However, today, if a company truly wants to move toward \u201chealthy lighting,\u201d \u201ccircadian lighting,\u201d and a \u201chigh-quality spectral value chain,\u201d it must add a fifth set: Fifth set: Physiological spectral model This is the real requirement that CIE S 026 places on upstream LED manufacturers. It\u2019s not about adding a slide of \u03b1-opic to your PPT. It\u2019s about starting to build capabilities like: This is what it means to be a company that truly understands CIE S 026. Not just one that says, \u201cOur products support healthy lighting.\u201d 6. How a leading LED company writes datasheets Let me give a very practical benchmark. In the future, when judging whether an LED chip company is truly ahead, don\u2019t first look at whether their presentations mention human-centric lighting. First, look at how they write their datasheets. I believe a company that is genuinely moving forward will structure it in at least three layers. Layer 1: Establish the five \u03b1-opic DERs in the main datasheet This is the core foundation. It\u2019s not just about writing melanopic.Step by step, you should establish standard outputs for: Because this is the most basic respect for CIE S 026. You can\u2019t claim to be doing \u03b1-opic measurements but end up only providing the single most convenient number for marketing. Layer 2: EDI can be listed, but it must be \u201cconditional EDI\u201d For example: This approach is much more reasonable. Because it acknowledges that EDI is a result calculated based on photopic illuminance, rather than pretending it\u2019s an absolute value independent of conditions. Layer 3: Connect \u03b1-opic values with electrical-thermal drift, aging, and binning This is what truly differentiates a company. If your \u03b1-opic values don\u2019t change with If, Tj, or aging, there are only two possibilities: Therefore, future higher-level datasheets should start including: At this point, \u03b1-opic truly transforms from a concept into a deliverable capability. 7. Beware the \u201cmelanopic worship\u201d I can actually understand why the market quickly focuses on melanopic. Because it\u2019s the easiest to talk about. And it\u2019s the easiest to connect with applications like daytime alertness, nighttime suppression, WELL, and circadian rhythm. But I want to be very honest: If the entire industry ends up reducing CIE S 026 to a single competition of \u201cwhose melanopic is higher,\u201d we are just repeating the old lm\/W race of the past, only with a trendier term. This is not an industry upgrade. This is just a slogan upgrade. Because a true light environment is never about a single channel. And real human responses can never be summarized by a single value. So I strongly advocate one thing: In communication, you can start with melanopic; but at the technical foundation, you must return to the complete framework of the five \u03b1-opic channels. Otherwise, you will inevitably see a bunch of products with \u201chigh melanopic but poor overall light quality,\u201d or marketing claims that \u201coverpromise physiological effects based on a single value.\u201d That is not the future I want to see. 8. This is not a technical detail\u2014it\u2019s the next round of pricing power for upstream companies Many people might read this article as a purely technical topic. I don\u2019t see it that way. I believe this is actually a matter of industry influence and discourse power. Over the past decade, how did upstream LED companies capture value? It wasn\u2019t about who told the best story. It was about who controlled: Now, in the era of CIE S 026, this game hasn\u2019t changed. Only the dimension of competition has been upgraded. In the future, truly high-value LED chip companies won\u2019t just be able to say, \u201cWe have this wavelength, this formulation, this CRI.\u201d They will be able to say: Our LED is not only efficient, color-accurate, and reliable; its five \u03b1-opic characteristics are definable, repeatable, computable, and integrable into system design. Once you reach this level, what you\u2019re selling is no longer just a chip. What you\u2019re selling is: A spectral capability that downstream applications can directly invoke. And this is what truly supports the next wave of premium value. 9. Don\u2019t rush to claim \u201chealthy lighting\u201d\u2014first write the datasheet right If I were to give LED chip manufacturers the most direct advice, I would say: Don\u2019t rush to shout \u201cwe understand healthy lighting\u201d at your booth. First, go back and look at your datasheet. If your datasheet can still only describe: But cannot describe: Then you are still some distance away from being a true \u201chealthy-light component company.\u201d Not because your technology isn\u2019t sufficient. But because your industry language hasn\u2019t been upgraded. And I believe, the next wave of companies that will truly gain discourse power won\u2019t be the ones shouting slogans first,but the ones who first take this language\u2014and write it into the datasheet, build it into the toolbox, integrate it into the application chain, and turn it into deliverable capability. This is the real significance of CIE S 026 for upstream LED manufacturers. It\u2019s not about printing a few extra parameters. It\u2019s about rewriting the rules. Conclusion In the future, customers aren\u2019t just buying lumens.They\u2019re buying whether an LED can be accurately integrated into human models.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_glsr_average":0,"_glsr_ranking":0,"_glsr_reviews":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[],"tags":[],"class_list":["post-2939","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power -<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power -\" \/>\n<meta property=\"og:description\" content=\"Summary When the entire industry is talking about healthy lighting, circadian lighting, and human-centric lighting, LED manufacturers who still only list luminous efficacy, CRI, color tolerance, and price in their datasheets are already half a generation behind. CIE S 026 doesn\u2019t just introduce another term\u2014it requires upstream component companies to establish a specification language that can describe how light affects humans. The real key is not just melanopic metrics, but the full framework of the five \u03b1-opic DERs and EDIs. The next round of pricing power won\u2019t be determined by who shouts the loudest, but by who first integrates this capability into datasheets, builds it into their toolboxes, and connects it to the application chain. Over the past two years, I\u2019ve felt increasingly strongly that: Many LED companies talk about healthy lighting, but their datasheets are still stuck in the previous era. What are they still comparing? A bit further, they start discussing TM-30, low-frequency flicker, and light quality. These are all correct, but still not enough. Because if the industry is saying that light not only allows people to see, but also affects circadian rhythm, alertness, mood, sleep, recovery, and even long-term health\u2014then why do many upstream LED datasheets still use a language that almost entirely ignores humans? That is the core problem. It\u2019s not whether CIE S 026 is important. It\u2019s not whether melanopic or \u03b1-opic metrics are difficult. It\u2019s that if upstream component companies themselves don\u2019t yet have the ability to translate how light affects humans into deliverable, calculable, comparable, and designable datasheet language, then much of the healthy lighting industry is still just slogans. This may sound harsh, but I think it\u2019s time to speak firmly. 1. Many companies misunderstand: CIE S 026 is not just a marketing talking point Many companies now know about melanopic EDI, add \u03b1-opic metrics in presentations, and some even want to put these directly into LED datasheets. The direction is correct. But many implementations clearly show a lack of real understanding of CIE S 026. The biggest mistake is treating it as just another premium parameter for marketing. This is dangerous. CIE S 026 is not a new marketing badge or a certification label to stick on a package. It is essentially a metric language weighted by retinal photoreceptors, pushing the description of \u201clight for humans\u201d from a vague concept to a framework that can be precisely calculated. Once you treat it as a measurement language, you realize: It\u2019s not just about adding a melanopic number to a datasheet. It forces LED upstream companies to answer a fundamental question: Are you selling merely a light-emitting semiconductor, or a spectral engine that can be invoked by physiological models? The difference is huge. 2. Correct the fundamental misunderstanding: EDI is not just melanopic I\u2019ve noticed that even many industry insiders still hold a vague understanding: They think DER involves the five \u03b1-opic metrics, but EDI seems mainly just melanopic EDI. This is common in practice but technically incomplete. According to the original logic of CIE S 026, it\u2019s clear: Not only DER has five types, EDI itself also has five types. Corresponding to the five retinal photoreceptor channels: Each theoretically has: In other words, EDI is not a single value, but a set of values. Because in recent applications like circadian rhythm, WELL, daytime alertness, and nighttime suppression, melanopic EDI has been most frequently highlighted, the market has gradually come to believe that EDI \u2248 melanopic EDI. This misunderstanding may seem like a terminology issue, but in LED datasheet logic, it directly leads to misrepresentation. Simplifying EDI to a single melanopic metric compresses CIE S 026\u2019s full five-dimensional framework into a single-line narrative. This is exactly what I most want to avoid. 3. What the LED industry fears most is not complexity, but \u201cpretending it\u2019s simple\u201d One of the LED industry\u2019s greatest capabilities is engineering complex problems. When LEDs replaced traditional lighting, it wasn\u2019t because LEDs were simple\u2014they were highly complex. They have electrical characteristics, thermal behavior, lumen depreciation, color drift, binning, package differences, driver coupling, system efficiency, lifetime models, and reliability risks. The industry matured because a common language was built to transform this complexity into specifications and tools usable by customers, engineers, FAE, and designers. This is the true brilliance of the LED industry. So, if \u03b1-opic, EDI, and DER enter the component ecosystem, my position is clear: Don\u2019t fear complexity. Fear oversimplifying the five-dimensional system into a single value for marketing. That\u2019s not simplification. That\u2019s dumbing it down. Because if upstream companies simplify multi-dimensional photobiological metrics into \u201chigher melanopic = more advanced,\u201d two things will happen: Ultimately, the credibility of both companies and the healthy lighting field suffers. 4. DER and EDI play fundamentally different roles for LED manufacturers Let me put this more directly: If you are an LED chip manufacturer, what should truly be prioritized in the main datasheet is the five \u03b1-opic DERs; EDI, on the other hand, should be presented as a conditional, normalized result. Why? Because DER is closer to what? It is closer to the intrinsic properties of the LED\u2019s spectrum itself. Once the SPD is defined, the DER is basically set. It is a source-level spectral characteristic. And what about EDI? EDI is not an absolute constant independent of conditions. It is an expression of equivalent daylight illuminance based on a given photopic illuminance. To put it plainly: DER is more like a raw material property; EDI is more like a converted result under specific usage conditions. It\u2019s the same as you cannot treat the center illuminance of an LED at a certain distance as an intrinsic property of the chip.Similarly, you should not package an EDI value that does not specify its conditions as the LED\u2019s absolute capability. So, if a datasheet says: melanopic EDI = 86 lx but does not specify that this is: Then this number, strictly speaking, is technically questionable. Not because EDI cannot be listed, but because presenting EDI without specifying the conditions is, in itself, incomplete. 5. What upstream companies truly lack is not a new parameter, but a fifth model I want to explain this in a more systematic way. Today, mature LED companies have basically already established four sets of models: First set: Electrical modelIf, Vf, power consumption, drive range, dimming characteristics. Second set: Thermal modelTc, Tj, thermal resistance, derating curves, thermal failure risks, lifetime boundaries. Third set: Optical modelLuminous flux, CCT, chromaticity coordinates, binning, CRI, TM-30, color shift, spectrum. Fourth set: Reliability modelLM-80, maintenance factor, package stability, failure rate, environmental adaptability. However, today, if a company truly wants to move toward \u201chealthy lighting,\u201d \u201ccircadian lighting,\u201d and a \u201chigh-quality spectral value chain,\u201d it must add a fifth set: Fifth set: Physiological spectral model This is the real requirement that CIE S 026 places on upstream LED manufacturers. It\u2019s not about adding a slide of \u03b1-opic to your PPT. It\u2019s about starting to build capabilities like: This is what it means to be a company that truly understands CIE S 026. Not just one that says, \u201cOur products support healthy lighting.\u201d 6. How a leading LED company writes datasheets Let me give a very practical benchmark. In the future, when judging whether an LED chip company is truly ahead, don\u2019t first look at whether their presentations mention human-centric lighting. First, look at how they write their datasheets. I believe a company that is genuinely moving forward will structure it in at least three layers. Layer 1: Establish the five \u03b1-opic DERs in the main datasheet This is the core foundation. It\u2019s not just about writing melanopic.Step by step, you should establish standard outputs for: Because this is the most basic respect for CIE S 026. You can\u2019t claim to be doing \u03b1-opic measurements but end up only providing the single most convenient number for marketing. Layer 2: EDI can be listed, but it must be \u201cconditional EDI\u201d For example: This approach is much more reasonable. Because it acknowledges that EDI is a result calculated based on photopic illuminance, rather than pretending it\u2019s an absolute value independent of conditions. Layer 3: Connect \u03b1-opic values with electrical-thermal drift, aging, and binning This is what truly differentiates a company. If your \u03b1-opic values don\u2019t change with If, Tj, or aging, there are only two possibilities: Therefore, future higher-level datasheets should start including: At this point, \u03b1-opic truly transforms from a concept into a deliverable capability. 7. Beware the \u201cmelanopic worship\u201d I can actually understand why the market quickly focuses on melanopic. Because it\u2019s the easiest to talk about. And it\u2019s the easiest to connect with applications like daytime alertness, nighttime suppression, WELL, and circadian rhythm. But I want to be very honest: If the entire industry ends up reducing CIE S 026 to a single competition of \u201cwhose melanopic is higher,\u201d we are just repeating the old lm\/W race of the past, only with a trendier term. This is not an industry upgrade. This is just a slogan upgrade. Because a true light environment is never about a single channel. And real human responses can never be summarized by a single value. So I strongly advocate one thing: In communication, you can start with melanopic; but at the technical foundation, you must return to the complete framework of the five \u03b1-opic channels. Otherwise, you will inevitably see a bunch of products with \u201chigh melanopic but poor overall light quality,\u201d or marketing claims that \u201coverpromise physiological effects based on a single value.\u201d That is not the future I want to see. 8. This is not a technical detail\u2014it\u2019s the next round of pricing power for upstream companies Many people might read this article as a purely technical topic. I don\u2019t see it that way. I believe this is actually a matter of industry influence and discourse power. Over the past decade, how did upstream LED companies capture value? It wasn\u2019t about who told the best story. It was about who controlled: Now, in the era of CIE S 026, this game hasn\u2019t changed. Only the dimension of competition has been upgraded. In the future, truly high-value LED chip companies won\u2019t just be able to say, \u201cWe have this wavelength, this formulation, this CRI.\u201d They will be able to say: Our LED is not only efficient, color-accurate, and reliable; its five \u03b1-opic characteristics are definable, repeatable, computable, and integrable into system design. Once you reach this level, what you\u2019re selling is no longer just a chip. What you\u2019re selling is: A spectral capability that downstream applications can directly invoke. And this is what truly supports the next wave of premium value. 9. Don\u2019t rush to claim \u201chealthy lighting\u201d\u2014first write the datasheet right If I were to give LED chip manufacturers the most direct advice, I would say: Don\u2019t rush to shout \u201cwe understand healthy lighting\u201d at your booth. First, go back and look at your datasheet. If your datasheet can still only describe: But cannot describe: Then you are still some distance away from being a true \u201chealthy-light component company.\u201d Not because your technology isn\u2019t sufficient. But because your industry language hasn\u2019t been upgraded. And I believe, the next wave of companies that will truly gain discourse power won\u2019t be the ones shouting slogans first,but the ones who first take this language\u2014and write it into the datasheet, build it into the toolbox, integrate it into the application chain, and turn it into deliverable capability. This is the real significance of CIE S 026 for upstream LED manufacturers. It\u2019s not about printing a few extra parameters. It\u2019s about rewriting the rules. Conclusion In the future, customers aren\u2019t just buying lumens.They\u2019re buying whether an LED can be accurately integrated into human models.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lightingrecipe.com\/de\/if-led-manufacturers-dont-put-\u03b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-23T07:47:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-23T09:24:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"967\" \/>\n\t<meta property=\"og:image:height\" content=\"522\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"LRS Admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"LRS Admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"10\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/\"},\"author\":{\"name\":\"LRS Admin\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/#\\\/schema\\\/person\\\/d8fc98bd754facede814f69c45e6ab7a\"},\"headline\":\"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power\",\"datePublished\":\"2026-03-23T07:47:14+00:00\",\"dateModified\":\"2026-03-23T09:24:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/\"},\"wordCount\":2193,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/lightingrecipe.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/unnamed-1.jpg\",\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/\",\"url\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/\",\"name\":\"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power -\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/lightingrecipe.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/unnamed-1.jpg\",\"datePublished\":\"2026-03-23T07:47:14+00:00\",\"dateModified\":\"2026-03-23T09:24:31+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/#\\\/schema\\\/person\\\/d8fc98bd754facede814f69c45e6ab7a\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#primaryimage\",\"url\":\"https:\\\/\\\/lightingrecipe.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/unnamed-1.jpg\",\"contentUrl\":\"https:\\\/\\\/lightingrecipe.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/unnamed-1.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/lightingrecipe.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/#website\",\"url\":\"https:\\\/\\\/lightingrecipe.com\\\/\",\"name\":\"\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/lightingrecipe.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"de\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/lightingrecipe.com\\\/#\\\/schema\\\/person\\\/d8fc98bd754facede814f69c45e6ab7a\",\"name\":\"LRS Admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2c772d43542664cbdbb25a0bb70f3394d59abb206bcb9a700a1b0b0d9e719198?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2c772d43542664cbdbb25a0bb70f3394d59abb206bcb9a700a1b0b0d9e719198?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/2c772d43542664cbdbb25a0bb70f3394d59abb206bcb9a700a1b0b0d9e719198?s=96&d=mm&r=g\",\"caption\":\"LRS Admin\"},\"sameAs\":[\"https:\\\/\\\/lightingrecipe.com\"],\"url\":\"https:\\\/\\\/lightingrecipe.com\\\/de\\\/author\\\/77026pwpadmin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power -","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"de_DE","og_type":"article","og_title":"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power -","og_description":"Summary When the entire industry is talking about healthy lighting, circadian lighting, and human-centric lighting, LED manufacturers who still only list luminous efficacy, CRI, color tolerance, and price in their datasheets are already half a generation behind. CIE S 026 doesn\u2019t just introduce another term\u2014it requires upstream component companies to establish a specification language that can describe how light affects humans. The real key is not just melanopic metrics, but the full framework of the five \u03b1-opic DERs and EDIs. The next round of pricing power won\u2019t be determined by who shouts the loudest, but by who first integrates this capability into datasheets, builds it into their toolboxes, and connects it to the application chain. Over the past two years, I\u2019ve felt increasingly strongly that: Many LED companies talk about healthy lighting, but their datasheets are still stuck in the previous era. What are they still comparing? A bit further, they start discussing TM-30, low-frequency flicker, and light quality. These are all correct, but still not enough. Because if the industry is saying that light not only allows people to see, but also affects circadian rhythm, alertness, mood, sleep, recovery, and even long-term health\u2014then why do many upstream LED datasheets still use a language that almost entirely ignores humans? That is the core problem. It\u2019s not whether CIE S 026 is important. It\u2019s not whether melanopic or \u03b1-opic metrics are difficult. It\u2019s that if upstream component companies themselves don\u2019t yet have the ability to translate how light affects humans into deliverable, calculable, comparable, and designable datasheet language, then much of the healthy lighting industry is still just slogans. This may sound harsh, but I think it\u2019s time to speak firmly. 1. Many companies misunderstand: CIE S 026 is not just a marketing talking point Many companies now know about melanopic EDI, add \u03b1-opic metrics in presentations, and some even want to put these directly into LED datasheets. The direction is correct. But many implementations clearly show a lack of real understanding of CIE S 026. The biggest mistake is treating it as just another premium parameter for marketing. This is dangerous. CIE S 026 is not a new marketing badge or a certification label to stick on a package. It is essentially a metric language weighted by retinal photoreceptors, pushing the description of \u201clight for humans\u201d from a vague concept to a framework that can be precisely calculated. Once you treat it as a measurement language, you realize: It\u2019s not just about adding a melanopic number to a datasheet. It forces LED upstream companies to answer a fundamental question: Are you selling merely a light-emitting semiconductor, or a spectral engine that can be invoked by physiological models? The difference is huge. 2. Correct the fundamental misunderstanding: EDI is not just melanopic I\u2019ve noticed that even many industry insiders still hold a vague understanding: They think DER involves the five \u03b1-opic metrics, but EDI seems mainly just melanopic EDI. This is common in practice but technically incomplete. According to the original logic of CIE S 026, it\u2019s clear: Not only DER has five types, EDI itself also has five types. Corresponding to the five retinal photoreceptor channels: Each theoretically has: In other words, EDI is not a single value, but a set of values. Because in recent applications like circadian rhythm, WELL, daytime alertness, and nighttime suppression, melanopic EDI has been most frequently highlighted, the market has gradually come to believe that EDI \u2248 melanopic EDI. This misunderstanding may seem like a terminology issue, but in LED datasheet logic, it directly leads to misrepresentation. Simplifying EDI to a single melanopic metric compresses CIE S 026\u2019s full five-dimensional framework into a single-line narrative. This is exactly what I most want to avoid. 3. What the LED industry fears most is not complexity, but \u201cpretending it\u2019s simple\u201d One of the LED industry\u2019s greatest capabilities is engineering complex problems. When LEDs replaced traditional lighting, it wasn\u2019t because LEDs were simple\u2014they were highly complex. They have electrical characteristics, thermal behavior, lumen depreciation, color drift, binning, package differences, driver coupling, system efficiency, lifetime models, and reliability risks. The industry matured because a common language was built to transform this complexity into specifications and tools usable by customers, engineers, FAE, and designers. This is the true brilliance of the LED industry. So, if \u03b1-opic, EDI, and DER enter the component ecosystem, my position is clear: Don\u2019t fear complexity. Fear oversimplifying the five-dimensional system into a single value for marketing. That\u2019s not simplification. That\u2019s dumbing it down. Because if upstream companies simplify multi-dimensional photobiological metrics into \u201chigher melanopic = more advanced,\u201d two things will happen: Ultimately, the credibility of both companies and the healthy lighting field suffers. 4. DER and EDI play fundamentally different roles for LED manufacturers Let me put this more directly: If you are an LED chip manufacturer, what should truly be prioritized in the main datasheet is the five \u03b1-opic DERs; EDI, on the other hand, should be presented as a conditional, normalized result. Why? Because DER is closer to what? It is closer to the intrinsic properties of the LED\u2019s spectrum itself. Once the SPD is defined, the DER is basically set. It is a source-level spectral characteristic. And what about EDI? EDI is not an absolute constant independent of conditions. It is an expression of equivalent daylight illuminance based on a given photopic illuminance. To put it plainly: DER is more like a raw material property; EDI is more like a converted result under specific usage conditions. It\u2019s the same as you cannot treat the center illuminance of an LED at a certain distance as an intrinsic property of the chip.Similarly, you should not package an EDI value that does not specify its conditions as the LED\u2019s absolute capability. So, if a datasheet says: melanopic EDI = 86 lx but does not specify that this is: Then this number, strictly speaking, is technically questionable. Not because EDI cannot be listed, but because presenting EDI without specifying the conditions is, in itself, incomplete. 5. What upstream companies truly lack is not a new parameter, but a fifth model I want to explain this in a more systematic way. Today, mature LED companies have basically already established four sets of models: First set: Electrical modelIf, Vf, power consumption, drive range, dimming characteristics. Second set: Thermal modelTc, Tj, thermal resistance, derating curves, thermal failure risks, lifetime boundaries. Third set: Optical modelLuminous flux, CCT, chromaticity coordinates, binning, CRI, TM-30, color shift, spectrum. Fourth set: Reliability modelLM-80, maintenance factor, package stability, failure rate, environmental adaptability. However, today, if a company truly wants to move toward \u201chealthy lighting,\u201d \u201ccircadian lighting,\u201d and a \u201chigh-quality spectral value chain,\u201d it must add a fifth set: Fifth set: Physiological spectral model This is the real requirement that CIE S 026 places on upstream LED manufacturers. It\u2019s not about adding a slide of \u03b1-opic to your PPT. It\u2019s about starting to build capabilities like: This is what it means to be a company that truly understands CIE S 026. Not just one that says, \u201cOur products support healthy lighting.\u201d 6. How a leading LED company writes datasheets Let me give a very practical benchmark. In the future, when judging whether an LED chip company is truly ahead, don\u2019t first look at whether their presentations mention human-centric lighting. First, look at how they write their datasheets. I believe a company that is genuinely moving forward will structure it in at least three layers. Layer 1: Establish the five \u03b1-opic DERs in the main datasheet This is the core foundation. It\u2019s not just about writing melanopic.Step by step, you should establish standard outputs for: Because this is the most basic respect for CIE S 026. You can\u2019t claim to be doing \u03b1-opic measurements but end up only providing the single most convenient number for marketing. Layer 2: EDI can be listed, but it must be \u201cconditional EDI\u201d For example: This approach is much more reasonable. Because it acknowledges that EDI is a result calculated based on photopic illuminance, rather than pretending it\u2019s an absolute value independent of conditions. Layer 3: Connect \u03b1-opic values with electrical-thermal drift, aging, and binning This is what truly differentiates a company. If your \u03b1-opic values don\u2019t change with If, Tj, or aging, there are only two possibilities: Therefore, future higher-level datasheets should start including: At this point, \u03b1-opic truly transforms from a concept into a deliverable capability. 7. Beware the \u201cmelanopic worship\u201d I can actually understand why the market quickly focuses on melanopic. Because it\u2019s the easiest to talk about. And it\u2019s the easiest to connect with applications like daytime alertness, nighttime suppression, WELL, and circadian rhythm. But I want to be very honest: If the entire industry ends up reducing CIE S 026 to a single competition of \u201cwhose melanopic is higher,\u201d we are just repeating the old lm\/W race of the past, only with a trendier term. This is not an industry upgrade. This is just a slogan upgrade. Because a true light environment is never about a single channel. And real human responses can never be summarized by a single value. So I strongly advocate one thing: In communication, you can start with melanopic; but at the technical foundation, you must return to the complete framework of the five \u03b1-opic channels. Otherwise, you will inevitably see a bunch of products with \u201chigh melanopic but poor overall light quality,\u201d or marketing claims that \u201coverpromise physiological effects based on a single value.\u201d That is not the future I want to see. 8. This is not a technical detail\u2014it\u2019s the next round of pricing power for upstream companies Many people might read this article as a purely technical topic. I don\u2019t see it that way. I believe this is actually a matter of industry influence and discourse power. Over the past decade, how did upstream LED companies capture value? It wasn\u2019t about who told the best story. It was about who controlled: Now, in the era of CIE S 026, this game hasn\u2019t changed. Only the dimension of competition has been upgraded. In the future, truly high-value LED chip companies won\u2019t just be able to say, \u201cWe have this wavelength, this formulation, this CRI.\u201d They will be able to say: Our LED is not only efficient, color-accurate, and reliable; its five \u03b1-opic characteristics are definable, repeatable, computable, and integrable into system design. Once you reach this level, what you\u2019re selling is no longer just a chip. What you\u2019re selling is: A spectral capability that downstream applications can directly invoke. And this is what truly supports the next wave of premium value. 9. Don\u2019t rush to claim \u201chealthy lighting\u201d\u2014first write the datasheet right If I were to give LED chip manufacturers the most direct advice, I would say: Don\u2019t rush to shout \u201cwe understand healthy lighting\u201d at your booth. First, go back and look at your datasheet. If your datasheet can still only describe: But cannot describe: Then you are still some distance away from being a true \u201chealthy-light component company.\u201d Not because your technology isn\u2019t sufficient. But because your industry language hasn\u2019t been upgraded. And I believe, the next wave of companies that will truly gain discourse power won\u2019t be the ones shouting slogans first,but the ones who first take this language\u2014and write it into the datasheet, build it into the toolbox, integrate it into the application chain, and turn it into deliverable capability. This is the real significance of CIE S 026 for upstream LED manufacturers. It\u2019s not about printing a few extra parameters. It\u2019s about rewriting the rules. Conclusion In the future, customers aren\u2019t just buying lumens.They\u2019re buying whether an LED can be accurately integrated into human models.","og_url":"https:\/\/lightingrecipe.com\/de\/if-led-manufacturers-dont-put-\u03b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/","article_published_time":"2026-03-23T07:47:14+00:00","article_modified_time":"2026-03-23T09:24:31+00:00","og_image":[{"width":967,"height":522,"url":"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg","type":"image\/jpeg"}],"author":"LRS Admin","twitter_card":"summary_large_image","twitter_misc":{"Verfasst von":"LRS Admin","Gesch\u00e4tzte Lesezeit":"10\u00a0Minuten"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#article","isPartOf":{"@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/"},"author":{"name":"LRS Admin","@id":"https:\/\/lightingrecipe.com\/#\/schema\/person\/d8fc98bd754facede814f69c45e6ab7a"},"headline":"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power","datePublished":"2026-03-23T07:47:14+00:00","dateModified":"2026-03-23T09:24:31+00:00","mainEntityOfPage":{"@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/"},"wordCount":2193,"commentCount":0,"image":{"@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#primaryimage"},"thumbnailUrl":"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg","inLanguage":"de","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/","url":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/","name":"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power -","isPartOf":{"@id":"https:\/\/lightingrecipe.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#primaryimage"},"image":{"@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#primaryimage"},"thumbnailUrl":"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg","datePublished":"2026-03-23T07:47:14+00:00","dateModified":"2026-03-23T09:24:31+00:00","author":{"@id":"https:\/\/lightingrecipe.com\/#\/schema\/person\/d8fc98bd754facede814f69c45e6ab7a"},"breadcrumb":{"@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/"]}]},{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#primaryimage","url":"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg","contentUrl":"https:\/\/lightingrecipe.com\/wp-content\/uploads\/2026\/03\/unnamed-1.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/lightingrecipe.com\/if-led-manufacturers-dont-put-%ce%b1-opic-in-their-datasheets-they-may-lose-the-next-round-of-pricing-power\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lightingrecipe.com\/"},{"@type":"ListItem","position":2,"name":"If LED manufacturers don\u2019t put \u03b1-opic in their datasheets, they may lose the next round of pricing power"}]},{"@type":"WebSite","@id":"https:\/\/lightingrecipe.com\/#website","url":"https:\/\/lightingrecipe.com\/","name":"","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lightingrecipe.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":"Person","@id":"https:\/\/lightingrecipe.com\/#\/schema\/person\/d8fc98bd754facede814f69c45e6ab7a","name":"LRS-Verwaltung","image":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/secure.gravatar.com\/avatar\/2c772d43542664cbdbb25a0bb70f3394d59abb206bcb9a700a1b0b0d9e719198?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/2c772d43542664cbdbb25a0bb70f3394d59abb206bcb9a700a1b0b0d9e719198?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/2c772d43542664cbdbb25a0bb70f3394d59abb206bcb9a700a1b0b0d9e719198?s=96&d=mm&r=g","caption":"LRS Admin"},"sameAs":["https:\/\/lightingrecipe.com"],"url":"https:\/\/lightingrecipe.com\/de\/author\/77026pwpadmin\/"}]}},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/posts\/2939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/comments?post=2939"}],"version-history":[{"count":7,"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/posts\/2939\/revisions"}],"predecessor-version":[{"id":2951,"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/posts\/2939\/revisions\/2951"}],"wp:attachment":[{"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/media?parent=2939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/categories?post=2939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lightingrecipe.com\/de\/wp-json\/wp\/v2\/tags?post=2939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}