We’ve already become used to checking PM2.5 before going out, monitoring CO₂ at home, installing fresh-air systems in offices, and purchasing air purifiers.
But there is another environmental factor—invisible, yet constantly affecting you—that has been overlooked for far too long: 光环境。
Many people still treat lighting as something that only needs to be “bright enough.” But in reality:
Light influences far more than whether you can see clearly.
It affects your daytime focus, your ability to fall asleep at night, emotional stability, children’s learning efficiency, and even the level of eye fatigue you experience.
If air quality can be managed with data, light should be measurable too.
And that is exactly what the In. Licht Well 光寰淨全屋健康監測系統 is designed to do:
It transforms Light + Air + Thermal Comfort into real-time indicators that ordinary people can understand and use—aligned with the logic of the international healthy building standard, WELL.
01 First Question: Is the Lighting in Your Home Really “Right”?
Have you experienced situations like these?
- Working from home during the day, becoming increasingly sleepy, as if your brain is covered in fog
- Scrolling on your phone at night under bright lights—tired, but unable to fall asleep
- Children doing homework for a long time, with sore eyes and drifting attention
- Moving into a new home with occasional odors; crowded rooms feeling stuffy and dizzy
- Heating in winter feeling overly dry; air-conditioned rooms in summer feeling humid and uncomfortable
These issues are often misunderstood as:
“I’m just too tired,”
“My child isn’t focused,”
“Maybe it’s a physical condition.”
But very often, the root cause is that the environment is not being continuously managed—especially light and air.
02 What Indicators Should Ordinary People Look at for “Healthy Light”?
Don’t worry—you don’t need to understand spectra or memorize standards. Just remember these three categories:
A. Daytime Alertness: Circadian Illuminance (m-EDI)
(The “daytime signal” your body actually receives)
Think of it this way: Even at the same 500 lux, some light makes you more awake, while some is merely “bright.”
m-EDI tells you whether the light provides enough biological stimulation for: being alert during the day and sleepy at night.
In. Licht Well directly displays EML and m-EDI.
B. Visual Comfort: Illuminance (lux) and CCT
(Clear vision, long-term comfort, less fatigue)
- Illuminance (lux): Too low strains the eyes; too high causes discomfort. Different spaces require different levels.
- CCT (Correlated Color Temperature): Cooler light boosts alertness, warmer light supports relaxation—but lighting should not stay the same all day.
In general mode, In. Licht Well displays key lighting quality data such as lux and CCT.
C. Peace of Mind: Flicker
(An invisible source of fatigue and discomfort)
Many lights appear stable but are actually flickering rapidly.
Your eyes may not “see” it, but your body may still “feel” it.
In. Licht Well measures:
- Flicker frequency
- 频闪指数
- Flicker Percentage
- SVM
- Pst LM
And provides health indicator alerts.
03 Light Alone Is Not Enough: A Truly Healthy Space Requires Light + Air + Thermal Comfort Together
You may notice:
- Poor sleep could be caused by excessive evening light stimulation
- Dizziness and stuffiness may come from high CO₂
- Skin irritation or throat discomfort may relate to TVOC or formaldehyde
- Low productivity may result from temperature/humidity outside the comfort zone
In. Licht Well integrates all of these into one device, covering 3 categories and 19 key parameters:
- Light Environment: lux, CCT, color quality metrics, EML, m-EDI, flicker, etc.
- Air Quality: PM2.5/PM10, CO₂, TVOC, Formaldehyde (HCHO)
- 热舒适性 temperature and relative humidity
04 Why It Matters for Families: Not Just Another Gadget, But a Health Foundation
Families invest in air purifiers and ventilation because they understand: Bad air can be captured by data—and felt by the body.
Lighting works the same way:
- Insufficient circadian stimulus → daytime fatigue, nighttime alertness, reduced sleep quality
- Mismatched lux and CCT → eye strain, low reading efficiency
- Flicker risks → discomfort, irritability, difficulty concentrating (especially during prolonged close-up tasks)
The value of In. Licht Well is: For the first time, you can manage light with data—just like air.
More importantly, it supports continuous monitoring and recording, even when the screen sleeps, with app-based review and report export.
05 Why It’s Even More Valuable for Smart Lighting & Healthy Building Providers
Three common industry challenges:
- You deliver “smart tunable lighting,” but clients ask: Is it actually healthier?
- You build “scene automation,” but lack long-term data for optimization
- You work on WELL or healthy building projects, but lack sustainable monitoring and reporting tools
In. Licht Well is essentially: A healthy space sensor + a data evidence layer.
- Aligned with WELL: Approved by IWBI and listed in the global Works with WELL directory, with matched clauses (e.g., L02.1, A08.1, T01.1, T07.1)
- Supports WELL v2 requirements: Covers L02/L03/L07/L08/L09, A08, T01, T07, etc.
- Visualized delivery: App dashboards translate complex metrics into simple red-yellow-green indicators, with exportable PDF reports
- Privacy-friendly: Data transfers via Bluetooth to the phone app; no cloud upload—only local and paired app access
In one sentence: It turns “Healthy Lighting / Healthy Space” from a slogan into a measurable, deliverable, and verifiable service.
06 Why Data Credibility Matters: Calibration Determines Evidence vs. Impression
For households, you care about accuracy.
For engineering, property management, and certification projects, you care whether it qualifies as evidence.
In. Licht Well comes with third-party calibration certification.
For partners, this means: You deliver not “I think it’s fine,” but data that can be written into design proposals, acceptance criteria, and operational reports.
07 How to Use It: Setup in 3 Minutes
- Recommended installation height: 120–140 cm, aligned with eye-level vertical exposure
- Sensor angle: approx. 120°, closer to real human perception
- Connection: Scan QR code, download the app, pair via Bluetooth
- Languages supported: Simplified Chinese / Traditional Chinese / English
Use cases:
- Wall-mounted fixed point: a 24/7 healthy environment guardian
- Desktop placement: evaluate children’s desks and workstations realistically
Air quality taught us: Only when we see the data do we take improvement seriously.
光也是如此。
When you begin to look at m-EDI, flicker, CCT, and lux, you realize: Many forms of fatigue and insomnia are not “your problem”—They are environmental problems.
The meaning of In. Licht Well is not selling another instrument.
It is helping more people realize: Health is not only about eating well and sleeping early—
It is also about living in the right environment.
Light, air, and thermal comfort all deserve management.
One Action Suggestion for Two Groups
For Families
Start with one step:
Measure the illuminance, flicker, and m-EDI at your child’s desk or your workstation once—you will immediately know what to adjust: lighting, fixtures, supplementation, or scenes.
For Smart Home / Smart Building Service Providers
Treat In. Licht Well as your “Healthy Delivery Foundation”:
Visualization + recording + reporting + WELL alignment
Upgrading your solution from “good-looking and functional” to: verifiable and sustainable.
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