An active lighting module with natural light guiding system and solid state source for indoor illumination

Chi-An Chen; Yi-Yung Chen; Allen Jong-Woei Whang

doi:10.1117/12.825269

18 August 2009 An active lighting module with natural light guiding system and solid state source for indoor illumination

Chi-An Chen, Yi-Yung Chen, Allen Jong-Woei Whang

Author Affiliations +

Proceedings Volume 7422, Ninth International Conference on Solid State Lighting; 74220Z (2009) https://doi.org/10.1117/12.825269
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

Recently, many researches focus on healthy lighting with sunlight. A Natural Light Guiding System includes collecting, transmitting, and lighting parts. In general, the lighting module of the Natural Light Guiding System only uses scattering element, such as diffuser, to achieve uniform illumination. With the passive lighting module, the application of the Natural Light Guiding System is limited because sunlight is dynamic source. When the sunlight is weak at morning, at evening, or on cloudy day, the illumination system is fail. In this paper, we provide an active lighting module that includes the lighting part of Natural Light Guiding System, LED auxiliary sources, optical elements, and optical detector. We use optical simulation tool to design and simulate the efficiency of the active module. The optical element can redistribute the sunlight only, LED light only, or sunlight with LED light to achieve uniform illumination. With the feedback of the detector, the active lighting module will adjust the intensity of LED to provide a steady illumination. Moreover, the module could replace the backlight module of LCD TV when the house has Natural Light Guiding System for saving energy and higher performance of image.

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Chi-An Chen, Yi-Yung Chen, and Allen Jong-Woei Whang "An active lighting module with natural light guiding system and solid state source for indoor illumination", Proc. SPIE 7422, Ninth International Conference on Solid State Lighting, 74220Z (18 August 2009); https://doi.org/10.1117/12.825269

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