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20 August 2005 Optimizing angle-to-area-converting, light-piping systems using surface features
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Abstract
In this paper, we investigate how to improve the uniformity of the spatial distribution of the illuminance at the output plane for angle-to-area-converting, light-piping systems through the introduction of cyclical surface features. A superposition approach is used for studying uniformity. Improvements in uniformity for square-to-circle and rectangle-to-circle lightpipe configurations are demonstrated for a short package length.
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Thomas L. R. Davenport, William J. Cassarly, and Thomas A. Hough "Optimizing angle-to-area-converting, light-piping systems using surface features", Proc. SPIE 5942, Nonimaging Optics and Efficient Illumination Systems II, 594204 (20 August 2005); https://doi.org/10.1117/12.623007
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