Compact back projection device having either a diffractive optic

Details Compact back projection device having either a diffractive optic Compact back projection device having either a diffractive optic

1996-04-03

1998-03-31

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

353 37, 353 77, 353 98, G02F 11335, G03B 2126, G03B 2128, G03B 2122

Patent

active

057344477

ABSTRACT:
A back projection device comprises an image generator (GI), an onward reflection mirror (MR) and at least one optical component (OM) capable of reflecting certain types of light beams almost entirely and reflecting certain other types of light beams almost entirely, said component being located in the proximity of a screen (E). The selection of optical behavior of the component (OM) may be done as a function of the polarization of the light beam, or else also as a function of its orientation with respect to said component (OM). Application: displays.

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