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Proceedings Paper

An investigation on the light uniformers based on liquid guide
Author(s): Yi Yang; Shizhuo Yin
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Paper Abstract

In this paper, an experimental study is conducted to investigate three light uniformers based on liquid guide for their possible usages as color mixing elements. In this study, three types of light uniformers are systematically analyzed, which include a straight light guide, a tapered light guide, and a U-shaped light guide. This study consists of two parts: a computer-aided optical modeling using a commercial ray tracing software package; and an experimental study verifying the results obtained from the computer simulations. Beam uniformity, in terms of illuminance and color, is compared among different light uniformers. The experimentally observed results agree well with the simulated results. Light transmission efficiency is also calculated for each light uniformer based on the simulation results. It is found in this study that the U-shaped light uniformer has high light transmission efficiency and the best color mixing effect among the three investigated light guides and offers a compact, practical, and inexpensive solution for color mixing in many industries.

Paper Details

Date Published: 14 September 2005
PDF: 11 pages
Proc. SPIE 5941, Fifth International Conference on Solid State Lighting, 59410R (14 September 2005); doi: 10.1117/12.613066
Show Author Affiliations
Yi Yang, The Pennsylvania State Univ. (United States)
Shizhuo Yin, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 5941:
Fifth International Conference on Solid State Lighting
Ian T. Ferguson; John C. Carrano; Tsunemasa Taguchi; Ian E. Ashdown, Editor(s)

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