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Technical Journal No.2 (August 1999)
Special Papers
Optical Engine for Liquid Crystal Projection Using Continuous Grain Silicon TFT

Keisuke MitaniTamotsu TakatsukaAkira Takushima
Toshifumi KurobeMasaharu Hara

A new optical engine for LCD rear projection HDTV has been developed using three 2.6 inch CGS(Continuous Grain Silicon) TFT LCD panels. The optical engine realizes the brightness of 1000cd/m2 and CCR(center-corner ratio) of 80% with 60 inch condition.
This optical engine uses two UHP(Ultra High Power) lamps to fulfil enough brightness and long life. Closed cooling system has been developed to keep out the dust, and original lens has been designed by own company to get high quality image.

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