Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1990-02-15
1992-01-28
Hille, Rolf
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
353122, 353 81, 353 35, 359 48, 359 53, 359 72, G02F 113
Patent
active
050838547
ABSTRACT:
A spatial light modulator is disclosed with a first lens array disposed adjacent to a matrix of light modulators, and in proximity to a liquid crystal light valve containing a photoconductive element. Low intensity light is collimated by a lens element to illuminate an optical aperture which has geometric configuration similar to that of the matrix element. The first lens array focuses light from the illuminated aperture into the pupil of a matrix addressed spatial light modulator element. The second lens array collects light emitting from the light modulator element, and focuses the image of the aperture onto the photoconductive element of the liquid crystal light valve so as to preserve the geometrical and positional configuration of the optical aperture, and magnify the size of the illuminated region on the photoconductor. The design of the optics is such that when adjacent apertures are imaged onto the photoconductor, the proximate boundaries of the illuminated regions are contiguous.
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Loucks Bryan E.
Zampolin Ronald F.
Greyhawk Systems, Inc.
Hille Rolf
Tran Minhloan
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