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

Xuan Li; Shangzhong Jin; Yanhua Wang; Songyuan Cen; Pei Liang; Le Wang; Xiaoyan Li

doi:10.1117/12.888527

11 January 2011 The mesopic effect of different correlated color temperature LED light sources on road lighting

Xuan Li, Shangzhong Jin, Yanhua Wang, Songyuan Cen, Pei Liang, Le Wang, Xiaoyan Li

Proceedings Volume 7991, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy II; 799106 (2011) https://doi.org/10.1117/12.888527
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

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.

Citation Download Citation

Xuan Li, Shangzhong Jin, Yanhua Wang, Songyuan Cen, Pei Liang, Le Wang, and Xiaoyan Li "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 (11 January 2011); https://doi.org/10.1117/12.888527

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