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17 September 2002 LED light source used in cultural relic illumination
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A new light source was researched and designed for cultural relic illumination. It is composed of high bright red, green, yellow, bule and white LED. A cone axes ellipse reflector is used in order to utilize light energy of LED as early possible. The light transmits in optical fiber bundle and lights the cultural relic in different angles and directions. The spectrum of the whole light source system is from 410nm to 700nm. There are not IR and UV. The light illuminance is 301x. Lighting of LEDs is controlled by rectangle waveform constant current source to make temperature lower and efficiency of light higher. Noise is avoided because a wind-cooling device is not used. Spectrum energy of different color light can be adjusted easily in order to show the important point of cultural relic.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shangzhong Jin, Zaixuan Zhang, and Wen Zhou "LED light source used in cultural relic illumination", Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002);


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