Patent ID: 6995917

Claim:
A projection display system using polarized light comprising: (a) a light source for generating a light beam having a least two light components, wherein said light components are polarized and at least one of said light components is polarized differently than another of said light components and said one of said light components has a color that is different than said another of said light components; (b) a projection system having plural polarizing beam splitters and dichroic filters therein, wherein each polarizing beam splitter and dichroic filter reflects at least one of said light components and transmits at least another of said light components and a plurality of LCD panels, and LCD panel generating a light-component-specific image associated with one of said light components; and (c) a projection lens for projecting an image combined from the light-component-specific images from the LCD's; (d) wherein said light source includes a lamp and a filter stack having a cholesteric color filter mechanism located between said lamp and said projection system for pre-filtering said light beam to transmit red p-polarized light, green s-polarized light and blue s-polarized light.