Healthy Lighting Is Entering a New Era of Space × Human Factors × Data
LED Expo New Delhi India 2025 was grandly held in New Delhi.
Our founder and CEO, Lawrence Lin, was honored to be invited by Messe Frankfurt India to join the opening ceremony alongside the Bureau of Energy Efficiency (BEE), the Ministry of MSME, architectural associations, and leaders from the design industry.
This was not just a lighting exhibition.
It was a clear signal of the comprehensive upgrading of India’s lighting industry.
On this stage, representing LRS / In.Licht® / GLG, Lawrence shared our latest research findings and raised a question of global significance:
The future value of lighting does not lie in luminaires — but at the intersection of space × people × data.
In this article, we have organized our observations, presentations, and industry insights from this India journey to help the industry better understand the next true global trend in lighting.
1. India’s Lighting Industry Is Rapidly Leaping Forward
The scene at LED Expo was even more powerful than any statistic:
- 240+ exhibitors
- 6,000+ products
- Tens of thousands of professional visitors
- Designers, architects, distributors, e-commerce platforms, and channel partners all in one place
India’s industry is moving from “making lighting products” to “building ecosystems.”
From luminaires to drivers, from controls to AIoT, from residential to industrial — the entire value chain is upgrading.
More importantly:
Governments, industry bodies, developers, and designers are all searching for “the next stage of lighting value.”
This is precisely where healthy lighting, human-centric lighting, and data-driven lighting come into play.
2. The Core Topic Lawrence Shared in India
Spatial Human-Centric Model (SHM) × FES Field Evaluation System
In the opening keynote and technical forums, Lawrence shared a key insight:
“The true quality of light does not exist in the luminaire, but in the space — and in the human eye.”
But what truly affects health, circadian rhythm, and emotional experience includes:
- Spatial geometry
- Surface reflectance and materials
- Multi-source light layering
- Vertical illuminance
- Spectrum
- User position and behavior
- Exposure duration
Therefore, in India, Lawrence publicly introduced the Spatial Human-Centric Model (SHM) developed by LRS.
【Spatial Human-Centric Model (SHM): Three-Layer Structure】
① Space Layer
Architecture, reflectance, materials, windows, shading, daylight
→ Determines how light is distributed in space
② Eye-Level Stimulus Layer
Vertical illuminance, m-EDI, EML, CS, SPD, TM-30, flicker
→ Determines what light actually reaches the human eye
③ Human Response Layer
Visual comfort, circadian entrainment, emotional experience, physiological response
→ Determines how light affects the human body
This addresses a major blind spot of traditional lighting:
Standards tell us what the luminaire emits — humans need to know what their eyes actually receive.
3. Why Do We Need FES (Field Evaluation System)?
Hotels, schools, offices, and large retail spaces in India share a common problem:
Beautiful documents — disappointing reality.
Examples:
A five-star hotel specifies “perfect spectrum” in documentation, but on site measurements show:
- SVM exceeding 1.0 (neurologically perceptible flicker)
- Desktop illuminance at 350 lx, but eye-level m-EDI only 80 lx
- Multi-source lighting causing Δuv shift and distorted atmosphere
- Warm LED strips producing high-frequency flicker
- Indoor PM2.5 > 300 µg/m³ (Delhi extreme conditions)
This is why we emphasize:
FES (Field Evaluation System) = the “truth instrument” of healthy lighting
It includes three core modules:
✔ 1. Visual Metrics
- Illuminance
- Luminance & glare
- TM-30
- Flicker (SVM / Pst LM)
✔ 2. Circadian Metrics
- m-EDI
- EML
- Daytime exposure curves
- Age-weighted assessment
✔ 3. Experiential Metrics
- SPD scene performance
- Δuv
- Scene consistency
- Multi-source light interaction analysis
FES will be the foundation for future design, commissioning, and standard-setting — and is exactly what Indian design firms, developers, hotels, and schools need most.
4. LRS & In.Licht®: Using Data to Help India Enter the Healthy Lighting Era
At LED Expo India, we introduced three globally leading devices already widely used in WELL and healthy building projects:
In.Licht Ultra
Spectral + Flicker + Circadian All-in-One Instrument
✔ Officially Works with WELL™ certified
For designers, consultants, schools, hotels, manufacturers
In.Licht Pro
High-speed portable measurement for tuning & delivery
For engineers, commissioning teams, lighting manufacturers
In.Licht Well
Long-term FES-ready monitoring device
Measures: m-EDI, flicker, illuminance, air quality (TVOC, PM2.5, CO₂)
For operators, developers, AIoT platforms
On site — at Delhi Airport, the expo venue, hotels, and meeting rooms — we measured:
- Outdoor m-EDI > 10,000 lx (extremely strong circadian stimulus)
- Outdoor PM2.5 = 341, PM10 > 400 (very poor air quality)
- High-frequency flicker in certain hotel areas
- Warm lighting scenes with Δuv > 0.006
India’s climate, air quality, and lighting conditions make precise healthy lighting more critical than ever.
5. Why India Is the “Next Stop” for Healthy Lighting
At the exhibition, We clearly saw three things:
1. Massive demand for healthy lighting
Hospitals, schools, IT campuses, and hotel chains are seeking more scientific standards.
2. Manufacturing wants to move up the value chain
From luminaires to light data, AIoT, and healthy buildings.
3. Channels (e.g., Sonepar) are reshaping ecosystems
They are no longer selling products — they sell solutions.
This means:
India will leapfrog the traditional lighting era and directly enter the data-driven healthy lighting era.
6. Collaborations Emerging from India
During LED Expo, Lawrence engaged with:
- Sonepar India leadership
- Leading lighting OEMs
- Hotel groups
- Architectural associations
- Government and education organizations
All showed strong interest in the In.Licht® FES methodology.
We will continue advancing collaboration with the Indian team (LOI — Lumen Optiks India).
7. The Future of Lighting Has Only One Direction
From brightness to health
From devices to space
From parameters to data
India is accelerating along this path — as are China, Europe, and the Middle East.
LRS will continue to drive:
- Standardization of healthy lighting
- Scientific circadian lighting
- Spatial experience design
- Data-driven field evaluation
- Light-data AIoT platforms
So that light truly becomes a “life infrastructure.”
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