Next-generation glass-base phosphor-converted laser light engine

Jin Kai Chang, Wei Chih Cheng, Yung Peng Chang, Yi Yin Kuo, Chun Chin Tsai, Yi Chung Huang, Li Yin Chen, Wood Hi Cheng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

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.

Original languageEnglish
Title of host publicationFourteenth International Conference on Solid State Lighting and LED-Based Illumination Systems
EditorsNikolaus Dietz, Jian-Jang Huang, Matthew H. Kane, Jianzhong Jiao
PublisherSPIE
ISBN (Electronic)9781628417371
DOIs
StatePublished - 2015
Event14th International Conference on Solid State Lighting and LED-Based Illumination Systems - San Diego, United States
Duration: 12 Aug 201513 Aug 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9571
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference14th International Conference on Solid State Lighting and LED-Based Illumination Systems
CountryUnited States
CitySan Diego
Period12/08/1513/08/15

Keywords

  • color wheel
  • glass-based phosphor
  • Laser light engine

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