Method and apparatus for improved spatial light modulation

Details Method and apparatus for improved spatial light modulation Method and apparatus for improved spatial light modulation

1998-07-27

2000-04-25

Epps, Georgia

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359256, 359276, 359277, 359561, 349 18, 349 74, 349117, 349118, 349130, G02F 103, G02F 113

Patent

active

060550864

ABSTRACT:
A method and apparatus for modulating a light beam in an optical processing system is described. Preferably, an electrically-controlled polarizer unit and/or an analyzer unit are utilized in combination with a spatial light modulator and a controller. Preferably, the spatial light modulator comprises a pixelated birefringent medium such as a liquid crystal video display. The combination of the electrically controlled polarizer unit and analyzer unit make it simple and fast to reconfigure the modulation described by the Jones matrix of the spatial light modulator. A particular optical processing objective is provided to the controller. The controller performs calculations and supplies control signals to the polarizer unit, the analyzer unit, and the spatial light modulator in order to obtain the optical processing objective.

REFERENCES:
patent: 5412500 (1995-05-01), Fergason

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