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Proceedings Paper

Color uniformity and data simulation in high-power RGB LED modules using different LED-chips arrays
Author(s): Yan Tu; Shangzhong Jin; Yanhua Wang; Liangliang Dou
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Paper Abstract

The continuing research efforts in white light created by mixing red, green and blue light emitting diodes (RGB LED) will allow their applications in high quality lighting systems in the (near) future. There are still many issues to tackle in this kind of light source, for instance the color uniformity and the change of color-render property owing to the change of LED's temperature. In this paper we simulate the effects on color uniformity of the near-field light distribution due to different LED-chips arrays (at optimum packaging density for uniform irradiance) using High-Power RGB LED-chips. The results showing the color uniformity of near-field which can be achieved with different RGB LED-chips arrays are presented. Several configurations of RGB LED-chips arrays and relevant data for color variation are given respectively. An analysis of luminous efficacy of radiation (LER) and color rendering index (CRI) of this source is performed, which are affected by the peak wavelength, spectral width, and the output peak emission power ratio of LED-chips.

Paper Details

Date Published: 26 November 2007
PDF: 8 pages
Proc. SPIE 6828, Light-Emitting Diode Materials and Devices II, 682816 (26 November 2007); doi: 10.1117/12.759075
Show Author Affiliations
Yan Tu, China Jiliang Univ. (China)
Shangzhong Jin, China Jiliang Univ. (China)
Yanhua Wang, China Jiliang Univ. (China)
Liangliang Dou, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 6828:
Light-Emitting Diode Materials and Devices II
Jian Wang; Changhee Lee; Hezhou Wang, Editor(s)

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