Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2002.11a
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- Pages.197-199
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- 2002
Optical design of an LED lamp composed of 3-Component RGB chips
3-Component RGB chip으로 구성된 LED 전구의 광학적 설계
- Kang, Seok-Hoon (Chonnam National University.HECS-RRC.PORTI) ;
- Song, Sang-Bin (Chonnam National University.HECS-RRC.PORTI) ;
- Kwon, Yong-Seok (Chonnam National University.HECS-RRC.PORTI) ;
- Yeo, In-Seon (Chonnam National University.HECS-RRC.PORTI)
- Published : 2002.11.09
Abstract
This paper describes the effects of chip arrangement configurations and the dimension of a reflecting cup upon the light output characteristics of a white lamp composed of RGB LED chips. As a result of simulation, the shorter distance between adjacent chips leads to a relative decrease in the light output efficiency due to inter-chip absorption of quanta, but rather uniform color mixing is expected. Among the factors of designing a reflecting cup it is the tilt angle of the cup wall that plays a determining role upon the variation of the light distribution. The light distribution shows a sudden change of pattern from Lambertian to Batwing at about
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