Design and modeling of optical engine for LC rear projection display '",5Bu#C
Weng Zhi-Cheng, Zhang Zeng-Bao !{3pp
The State Key Lab. of Applied Optics, ChangChun Institute of optics, fine mechanics and physics, W.CIyGK
Chinese Academy of Sciences, P.O.Box: 1024 ChangChun P.R. china (130022) 9%dNktt
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ABSTRACT )i>KYg w
Based on analyzing the LC rear projective TV system, The OE (optical engine) for three penal LCoS rear projection TV @)0g Xg
system has been designed and modeled, The OE (optical engine) of LC rear projection display is the main component of "{:* fI;!
the system, and it directly affects final performance, so the design of good color performance, high brightness and PRUGUHY
contrast and high optical efficient is the key of the system. From a commercial viewpoint, a compact size and light r:o!w7C:a
weight design makes it more competitive. LightTools software has a great many of powerful functions, such as ;}PL/L$L6;
modeling of optical system, analysis of illumination, modeling of machine structure, analysis of polarization and design @ rdC/=Y[
of optical coating. We have used LightTools to analyses and optimize a whole optical engine of three penal LCoS 9(I4x]`
projection display including illumination system, dividing and recombining of colors system, projection lens. At the end FPMW"~v
evaluated the performances of optical engine (parameters of output, uniformity, contract, resolution and so on). C/$IF M<
Keywords: optical engine, illumination system, projection display, LCoS
