LED projector with two liquid crystal on silicon light valves and a fly's eye integrator

被引：8

作者：

Van Giel, Bart ^{[1
]}

Meuret, Youri ^{[1
]}

Bogaert, Lawrence ^{[1
]}

Murat, Hueseyin ^{[2
]}

De Smet, Herbert ^{[2
,3
]}

Thienpont, Hugo ^{[1
]}

机构：

[1] Vrije Univ Brussel, Dept Appl Phys & Photon, B-1050 Brussels, Belgium

[2] Univ Ghent, Dept Elect & Informat Syst, TFCG Microsyst Grp, B-9052 Ghent, Belgium

[3] Interuniv Microelect Ctr, Div Informat Technol, B-9052 Ghent, Belgium

来源：

DISPLAYS | 2008年 / 29卷 / 05期

关键词：

Projection displays; Light-emitting diodes; Liquid crystal on silicon; Wire-grid polarizer; Color sequential; Fly's eye integrator;

D O I：

10.1016/j.displa.2008.03.003

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We present a projection system with two liquid crystal on silicon light valves that are illuminated by light-emitting diode light Sources (LEDs). The LED illumination system is designed with a fly's eye integrator. Using this integrator we combine for each primary color two LEDs into one bright source to illuminate the light valve. In the color management system a wire-grid polarizer is Used to combine two beams with opposite state of polarization. The contrast behavior Of our two LCOS approach is investigated with a basic model and ray tracing. The consequences Of rising this polarizer are discussed. We present contrast, Uniformity and light output measurements of a concept demonstration set-Up. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：464 / 470

页数：7

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