The Visual Health and Safety Protection (Photobiological Effects Analysis) Laboratory focuses on the research about “optical health” and “photobiological safety” impacts of lighting, display, and eyewear products on the human body. It investigates the photobiological effects of light and light media on human vision, non-visual functions, brain function, skin, and related metabolic systems. From physiological and perceptual perspectives, it effectively evaluates the health and safety impacts of light on the human body.
The research studies the correspondence between various physical parameters of lighting, display, and eyewear products (e.g., brightness, illuminance, color temperature, color rendering index, peak spectrum, flicker, color gamut, refresh rate, transmittance) and human physiological indicators. It constructs objective evaluation models for eye fatigue, fundus light damage and spectral response, myopia development, mental workload and task efficiency, color perception and visual cognition, physiological rhythms, and skin photobiological effects. The Laboratory proposes objectively quantifiable evaluation indicators for visual health and comfort, as well as limit values/ranges for human photobiological safety. Based on these objective quantitative indicators, it develops light source ratio models that map product physical parameters to human physiological functional parameters, effectively guiding enterprises in R&D and production. This enables the production of energy-efficient, healthy, and safe lighting, display, and eyewear products, enhancing the competitiveness of related industries in “human-centric” and “user-friendly” directions and guiding healthy industrial development and technological upgrading.
In recent years, the Visual Health and Safety Protection (Photobiological Effects Analysis) Laboratory has undertaken six national scientific projects and one international project. It is currently leading the National Key R&D Program project “Research on Metrology, Evaluation Technology Standards, and Applications for Ultra-High-Definition Large Color Gamut Laser Displays”. Since 2012, related achievements have won 14 provincial and ministerial science and technology awards, including the First Prize of the Sichuan Provincial Science and Technology Progress Award and the Second Prize of the Guangdong Provincial Science and Technology Progress Award. Nearly 30 SCI/EI papers have been published in international authoritative academic journals such as Lights. The Laboratory has led the drafting of over 10 international, national, and industry standards, including:
- GB 40070-2021, Hygienic requirements of study products for myopia prevention and control in children and adolescents
- GB/T 45657-2025, Requirements for audio-visual technology in informationized teaching environment
- GB/T 44441-2024, Test of visual healthy and comfort of LED lighting products
- GB/T 38120, Technical requirements on application of light health and light safety of coating for protection against blue light
Products developed under the Laboratory’s guidance, such as LED health lighting fixtures, new displays, and anti-fatigue lenses, have achieved significant economic and social benefits.
Main Services
- Visual Comfort (VICO) Evaluation System: Focuses on corneal and ciliary muscle-related visual physiological indicators to quantify the impact of light on visual fatigue and myopia induction, with the goal of preventing and controlling myopia.
- Fundus Impact Evaluation System: Focuses on the effects of light on the fundus (e.g., blue light damage and UV damage) and the impact of different light parameters on eye axis development.
- Visual Perception and Mental Workload Evaluation System: Focuses on mental fatigue, cognitive load, and color perception effects caused by light entering the brain via the optic nerve.
- Non-Visual and Skin Metabolic System Evaluation System: Establishes quantitative physiological indicator evaluation models for non-visual effects of light and light-induced skin aging and pigmentation.
- Visual Health and Comfort Evaluation for Lighting, Display, and Eyewear Products, and Application of Healthy Light Models: Guides the design and development of lighting, display, and eyewear products, including:
- Visual Comfort (VICO) (visual fatigue and visual imaging quality)
- Photobiological Safety (blue light damage, UV damage)
- Visual Cognition and Mental Workload
- Color Perception and Color Feedback
- Physiological Rhythm Impact and Light Intensity Threshold Curves
- Skin Photobiological Safety Protection Models
- Detection of Physical Performance Indicators for Optical Products and Consistency Verification of Different Measurement Methods
- Organization and Development of International and National Standards in Eye and Face Protection
- R&D of Testing Equipment and Laboratory Solutions in Visual Health and Eye/Face Protection
Typical Industrial Cases
- Xiamen Leedarson Lighting Co., Ltd. – LED classroom lights
- ByteDance – Reading and writing lamps
- Hangzhou Huapu Yongming – LED street lights
- BBK (Guangdong Xiao Tiancai Technology) – Learning tablets
- Guangdong Shiyi (Seewo) – Teaching displays
- XGIMI – Projectors
- Honor – Smartphones
- Vivo – Smartphones
- Essilor Optics – Eyezen X series lenses, MyOPtic lenses
- Jiangsu Wanxin Optics – Anti-fatigue lenses, customized single-vision lenses
Contact Information
Contact Person: Li Shupeng
Phone: 15940733005
Email: lisp@cnis.ac.cn