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Proceedings Paper

Next-generation glass-base phosphor-converted laser light engine
Author(s): Jin-Kai Chang; Wei-Chih Cheng; Yung-Peng Chang; Yi-Yin Kuo; Chun-Chin Tsai; Yi-Chung Huang; Li-Yin Chen; Wood-Hi Cheng
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Paper Abstract

A highly reliable laser light engine (LLE) employing a novel glass-based phosphor-converted layer is experimentally demonstrated. The LLE module consisted of a blue light laser array and a color wheel, which included two glass-based phosphor-converted layers of yellow YAG:Ce and green LuAG:Ce and a micro motor. The blue light laser array was used to excite the color wheel to create yellow and green lights. The combination of the blue, yellow, and green lights produced high-purity white light for use in LLEs. The glass-based LLE exhibited better thermal stability, higher luminous efficiency of 64.7lm/W(YAG:Ce) and 67.2lm/W (LuAG:Ce), and higher purity of 95.4%(YAG:Ce) and 77.4%(LuAG:Ce). This study clearly demonstrates the advantages of adapting novel glass as a phosphor-converted color wheel in LEL modules that provide higher reliability and better performance of laser projectors for use in the next generation LLEs, particularly in the area where the conventional LLEs employing silicone-based phosphor fails to stand for long and strict reliability is highly required.

Paper Details

Date Published: 8 September 2015
PDF: 5 pages
Proc. SPIE 9571, Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems, 957103 (8 September 2015); doi: 10.1117/12.2186375
Show Author Affiliations
Jin-Kai Chang, National Sun Yat-Sen Univ. (Taiwan)
Wei-Chih Cheng, Taiwan Color Optics, Inc. (Taiwan)
Yung-Peng Chang, Taiwan Color Optics, Inc. (Taiwan)
Yi-Yin Kuo, National Sun Yat-Sen Univ. (Taiwan)
Chun-Chin Tsai, Far East Univ. (Taiwan)
Yi-Chung Huang, Brogent Technologies, Inc. (Taiwan)
Li-Yin Chen, National Sun Yat-Sen Univ. (Taiwan)
Wood-Hi Cheng, National Chung Hsing Univ. (Taiwan)


Published in SPIE Proceedings Vol. 9571:
Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems
Matthew H. Kane; Jianzhong Jiao; Nikolaus Dietz; Jian-Jang Huang, Editor(s)

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