A blue-violet enhanced BDJ photodetector and its application in the color measurement of RGB LEDs for solid-state lighting

Kun Liang; Wi Li; Hongru Ren; Xuelian Liu; Wenjie Wang; Ru Yang; Dejun Han

doi:10.1117/12.803480

18 November 2008 A blue-violet enhanced BDJ photodetector and its application in the color measurement of RGB LEDs for solid-state lighting

Kun Liang, Wi Li, Hongru Ren, Xuelian Liu, Wenjie Wang, Ru Yang, Dejun Han

Author Affiliations +

Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71351X (2008) https://doi.org/10.1117/12.803480
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

A blue-violet enhanced BDJ photodetector which can simultaneously determine the centroid wavelength and the radiant power of LEDs from 380 to780nm was investigated, and its application in the color measurement and the white balancing of RGB white LEDs was demonstrated. This BDJ photodetector directly gave the chromatic coordinates of a LED that was approximated as a monochromatic stimulus due to its narrow spectrum compared with the CIE colormatching functions. Maximal simulated and experimental errors Δ'u'v' to the target white point of the white balanced RGB LEDs was 0.0154 and 0.0214. The BDJ photodetector also performed to be sensitive to the spectrum variation characterized by CCT, and was preferable as a sensor for monitoring the white point.

Citation Download Citation

Kun Liang, Wi Li, Hongru Ren, Xuelian Liu, Wenjie Wang, Ru Yang, and Dejun Han "A blue-violet enhanced BDJ photodetector and its application in the color measurement of RGB LEDs for solid-state lighting", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71351X (18 November 2008); https://doi.org/10.1117/12.803480

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