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Method and Apparatus for Improved Spatial Light ModulationA 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.
Document ID
20000045697
Acquisition Source
Johnson Space Center
Document Type
Other - Patent
Authors
Soutar, Colin (NASA Johnson Space Center Houston, TX United States)
Juday, Richard D. (NASA Johnson Space Center Houston, TX United States)
Date Acquired
September 7, 2013
Publication Date
April 25, 2000
Subject Category
Optics
Report/Patent Number
Patent Application Number: US-Patent-Appl-SN-327762
Patent Number: NASA-Case-MSC-22378-2
Patent Application Number: US-Patent-Appl-SN-123016
Patent Number: US-Patent-6,055,086
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-MSC-22378-2|US-Patent-6,055,086
Patent Application
US-Patent-Appl-SN-327762|US-Patent-Appl-SN-123016

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