Efficient optical system for a high resolution projection displa

Details Efficient optical system for a high resolution projection displa Efficient optical system for a high resolution projection displa

1997-08-25

1998-07-28

Shafer, Rickey D.

Optical: systems and elements

Polarization without modulation

Depolarization

359495, 359634, 359638, 348751, 348752, 348756, 348757, 349 62, 353 33, 353 34, 353 37, 353 81, G02B 530, G02B 2728, G03B 2100, G02F 100

Patent

active

057869340

ABSTRACT:
An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. In particular, the present invention includes a color splitting prism assembly having a plurality of output faces through which a separate color component is directed to be reflected by a respective light valve. Color absorbing filters are disposed at each of the output faces to absorb the color components not corresponding to the color directed through each output face.

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