Design and modeling of optical engine for LC rear projection display D
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Weng Zhi-Cheng, Zhang Zeng-Bao T'"aStt6
The State Key Lab. of Applied Optics, ChangChun Institute of optics, fine mechanics and physics, yn)K1f^
Chinese Academy of Sciences, P.O.Box: 1024 ChangChun P.R. china (130022) mw-0n
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ABSTRACT ?<STt 9
Based on analyzing the LC rear projective TV system, The OE (optical engine) for three penal LCoS rear projection TV K?8{y
system has been designed and modeled, The OE (optical engine) of LC rear projection display is the main component of ryg1o=1v/
the system, and it directly affects final performance, so the design of good color performance, high brightness and $h"tg9L^)
contrast and high optical efficient is the key of the system. From a commercial viewpoint, a compact size and light Ep>3%{V
weight design makes it more competitive. LightTools software has a great many of powerful functions, such as [I^>ji0V
modeling of optical system, analysis of illumination, modeling of machine structure, analysis of polarization and design 3&^4%S{/
of optical coating. We have used LightTools to analyses and optimize a whole optical engine of three penal LCoS YIvJN
projection display including illumination system, dividing and recombining of colors system, projection lens. At the end
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evaluated the performances of optical engine (parameters of output, uniformity, contract, resolution and so on). )
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Keywords: optical engine, illumination system, projection display, LCoS