Design of Reflectors and Thermal Module on Indoor Illumination Using Light-Emitting Diode
Date Issued
2008
Date
2008
Author(s)
Li, Yi-Hsiun
Abstract
This research developed the Light-emitting diode (LED) lamps on indoor illumination. With help of optical analysis and simulations, we are able to utilize the reflectors to reach the optimal illumination results. Two case studies are presented: one is recessed LED lamp; the other is LED lightbar. In the first case, it uses 3 W high-power LEDs combined with facetted reflectors in recessed LED lamp. The optical simulation and experimental results demonstrated that our design is more efficient in illumination and saving 55.6 % energy than traditional lamps. In the second case, through the optical simulation and experimental results, the LED lightbar which needs only to uses 48 Flux LEDs of 0.1 W combined with elliptical reflector result in much more uniformity illumination distribution and higher color rendering index (CRI) than the fluorescent lamp. Moreover, it reduce up to 88 % power consumption. Both cases implies great potentials to replace the traditional lamps with the LED lamps developed by our research.
Subjects
Light-emitting diode
Reflector
Indoor illumination
Thermal Module
Type
thesis
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ntu-97-R95522304-1.pdf
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