Technical requirements for light health and light safety application of red light

Problem Statement:

At present, the red light above 600nm has been applied in the field of LED health lighting. Inhibiting the development of teenagers' ocular axis through specific red light compensation and realizing skin beauty through specific red light are gradually becoming the growth engine of the industry, but there are two existing problems:

On one hand, IEC has issued the international standard IEC 62471 Photobiological Safety of Lamps and Lamp Systems, which covers the safety requirements of red light on retina and skin, while  the current red light application is different from the existing IEC 62471 standard in terms of scene and service time，so the current photobiosafety requirements need to be combined with the application characteristics of current existing red light;

On the other hand, there are trigger threshold and critical threshold for photobiological effect. When the energy is lower than the trigger threshold, the relevant photobiological effect cannot be triggered. When the energy is higher than the critical threshold, there are often negative effects. At present, there is no standard to regulate the value range of photobiological effect of red light on eyes and skin, which causes a large number of LED health lighting products focusing on the biological effect of red light fail to achieve the expected effect and even have negative effects.

Therefore, it is necessary to develop the technical requirements for the application of light health and light safety of red light to effectively ensure the health and safety of users and promote the technological progress of the industry.

Goals: 

Focusing on the photobiological impact of red light on human eyes and skin, aiming at meeting the requirements of specific use scenarios, this project will put forward the requirements of red light biosafety indicators, the magnitude range of relevant health treatment, and the corresponding test methods.

WG Members:

1.       Jianqi Cai   caijq@cnis.ac.cn  (China) WG Leader

2.       kang.li  Kang.li@southwales.ac.uk   (UK)

3.       Thebano Santos tesantos@cti.gov.br (Brazil)

4.       Cheng Qian cqian@buaa.edu.cn (China)

Timeline: 

Initial outline: December 2022

Initial draft for TCS Chair review: June 2023

Draft for TCS member review and comment: November 2023

Committee or Subcommittee final draft: June 2024

Publication: November 2024