LEDs on curved ceramic substrate with primary optics for modification of luminous intensity

An-Chi Wei; Jyh-Rou Sze; Jyh-Long Chern

doi:10.1117/12.893361

24 September 2011 LEDs on curved ceramic substrate with primary optics for modification of luminous intensity

An-Chi Wei, Jyh-Rou Sze, Jyh-Long Chern

Proceedings Volume 8123, Eleventh International Conference on Solid State Lighting; 81231I (2011) https://doi.org/10.1117/12.893361
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Unlike the conventional LED luminary with a planar substrate and only the forward emission, the proposed LED luminary with a curved ceramic substrate can perform both the forward and the backward emissions. Assembled with the proper primary optics, an illustrated LED bulb has been designed, fabricated and measured. The measured luminous intensity of the LED bulb has shown the backward emission and designed distribution with the beam-angle of 133°. To broaden the application areas, such a LED bulb on a curved substrate has been modularized as a streetlight. The measured results of the proposed streetlight have shown that the beam angle of the luminous intensity and the luminaire efficiency are 132° and 86%, respectively. Meanwhile, its luminous characteristics also fit the standard for lighting design of urban roads.asei.c

Citation Download Citation

An-Chi Wei, Jyh-Rou Sze, and Jyh-Long Chern "LEDs on curved ceramic substrate with primary optics for modification of luminous intensity", Proc. SPIE 8123, Eleventh International Conference on Solid State Lighting, 81231I (24 September 2011); https://doi.org/10.1117/12.893361

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