Visual and non-visual effects of the phosphor-free white LED lamps rich in the 535–589-nm yellow-green light

Shanshan Zeng; Ya Guo; Wentao Hao; Xin Luo; Xing Guo; Jianli Zhang; Jianqi Cai; Guangxu Wang

doi:10.1038/s41377-025-01896-w

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Visual and non-visual effects of the phosphor-free white LED lamps rich in the 535–589-nm yellow-green light

Original Articles

- Visual and non-visual effects of the phosphor-free white LED lamps rich in the 535–589-nm yellow-green light
- Light: Science & Applications Vol. 14, Issue 8, Pages: 2272-2278(2025)
- Affiliations：
  
  1.Laboratory of Visual Health and Safety Protection, China National Institute of Standardization, Beijing, China
  2.National Institute of LED on Si Substrate, Nanchang University, Nanchang, China
- Author bio：
  
  Jianqi Cai (caijq@cnis.ac.cn)
  Guangxu Wang (guangxuwang@ncu.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01896-w
  CLC：
- Received：16 October 2024，
  
  Revised：13 May 2025，
  
  Accepted：20 May 2025，
  
  Published Online：20 June 2025，
  
  Published：31 August 2025
- Accepted：
Scan QR Code
Zeng, S. S. et al. Visual and non-visual effects of the phosphor-free white LED lamps rich in the 535–589-nm yellow-green light. Light: Science & Applications, 14, 2272-2278 (2025).
DOI：

Zeng, S. S. et al. Visual and non-visual effects of the phosphor-free white LED lamps rich in the 535–589-nm yellow-green light. Light: Science & Applications, 14, 2272-2278 (2025). DOI： 10.1038/s41377-025-01896-w.

摘要

Abstract

Despite an increasing number of researches focused on the photo-biological effects of lighting on visual and non-visual health

insights into the phosphor-free white LED lamps with different spectral power distributions remain unclear. In this study

human factors experiments were conducted with 30 participants. Variations in ocular physiological parameters and melatonin circadian rhythms were assessed for participants in an ordinary lamp

a full-spectrum lamp

and four phosphor-free white LED lamps rich in the 535–589 nm yellow-green light. It was observed that ocular functions exhibited significantly higher improvements under the four phosphor-free LED lamps compared to the ordinary and full-spectrum lamps

indicating the advantageous effects of phosphor-free lamps rich in the 535–589 nm yellow-green light on both visual and non-visual health.

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Keywords

references

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