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Proceedings Article

The mesopic effect of different correlated color temperature LED light sources on road lighting

[+] Author Affiliations
Xuan Li, Shangzhong Jin, Yanhua Wang, Songyuan Cen, Pei Liang

China Jiliang Univ. (China)

Le Wang, Xiaoyan Li

China Jiliang Univ. (China) and Zhejiang Univ. (China)

Proc. SPIE 7991, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy II, 799106 (January 11, 2011); doi:10.1117/12.888527
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From Conference Volume 7991

  • Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy II
  • Heonsu Jeon; Min Gu; Yi Luo; Chih-Chung Yang; Muqing Liu
  • Shanghai, China | December 08, 2010

abstract

The theory of mesopic vision provides an important theoretical foundation for the choice of road lighting sources. Based upon a number of recent mesopic photometry studies, an equation (E mes = B •E P ) to deduce from the E p (photopic illumination) to Emes (mesopic equivalent illumination) is proposed, where B is instant for modified coefficient. The coefficient B can be used easily to calculate the mesopic equivalent illumination by using the measuring results of photopic illumination for different correlated color temperature (CCT) light sources under mesopic light levels. Using the equation, we analyze the variation of coefficient B with background lighting level of the different correlated color temperature lighting sources under mesopic vision levels. By calculating the mesopic equivalent illumination of the different sources, our results showing that the higher correlated color temperature LED sources have better visual effects. Moreover, the results provide a basis for further studies on the illuminometer, which might be suitable for mesopic vision.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Xuan Li ; Shangzhong Jin ; Yanhua Wang ; Songyuan Cen ; Pei Liang, et al.
"The mesopic effect of different correlated color temperature LED light sources on road lighting", Proc. SPIE 7991, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy II, 799106 (January 11, 2011); doi:10.1117/12.888527; http://dx.doi.org/10.1117/12.888527


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