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Proceedings Paper

Etendue dependent optimization for coupling with dual paraboloid reflectors for projection display
Author(s): Kenneth K. Li; Seiji Inatsugu; Sheldon S. Sillyman
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Paper Abstract

A dual paraboloid reflector system conserves the source brightness by producing a real image of the arc on the target space. Traditional elliptical and parabolic reflector tends to degrade the brightness of the arc due to the angular dependence of the magnification such that the image at the target space is the superposition of multiple images of the arc with varying degree of magnifications. In this paper, we present steps for optimizing a projection illumination system consisting of the dual paraboloid reflectors. The effects of various parameters including reflector sizes, scattering and angular extents were evaluated using ray-tracing model. The results of the calculations are compared with experimental measurement.

Paper Details

Date Published: 28 May 2004
PDF: 9 pages
Proc. SPIE 5289, Liquid Crystal Materials, Devices, and Applications X and Projection Displays X, (28 May 2004); doi: 10.1117/12.541160
Show Author Affiliations
Kenneth K. Li, Wavien, Inc. (United States)
Seiji Inatsugu, Wavien, Inc. (United States)
Sheldon S. Sillyman, Wavien, Inc. (United States)

Published in SPIE Proceedings Vol. 5289:
Liquid Crystal Materials, Devices, and Applications X and Projection Displays X
Ming Hsien Wu; Liang-Chy Chien, Editor(s)

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