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US 5,208,696 AGranted
Spatial light modulating device with CRT input image
AssigneeHamamatsu Photonics K.K.
InventorsYuji Kobayashi, Tsutomu Hara, Yoshiharu Ooi
Life of this patent
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Abstract
An input incoherent optical image to be supplied to a microchannel spatial light modulator (MSLM) is produced by a CRT in accordance with an input electric signal provided from a computer. An output coherent optical image is read-out by launching a laser beam into an electro-optic material incorporated in the MSLM which stores the input image as a refractive index distribution.
Claims7
A spatial light modulating device, comprising:
- a spatial light modulator having, in a vacuum enclosure, a photoelectric converter and electro-optic means for storing an electron image provided from said photoelectric converter and for creating in itself an optical change;
- laser means for launching a laser beam into said electro-optic means to produce a modulated laser beam;
- first optical image display means for converting a first input electric signal into a first optical image and displaying said first optical image so as to be incident on a light-receiving surface of said photoelectric converter;
- first control means for supplying said first input electric signal to said first optical image display means;
- sending means for sending said modulated laser beam;
- and
- a half mirror disposed between said first optical image display means and said light-receiving surface of said photoelectric conversion means, for transmitting said first optical image so as to be incident on said light-receiving surface and reflecting said modulated laser beam sent by said sending means so as to be incident on said light-receiving surface.
4 more elements
A spatial light modulating device, comprising:
- a spatial light modulator having, in a vacuum enclosure, a photoelectric converter and electro-optic means for storing an electron image provided from said photoelectric converter and for creating in itself an optical change;
- laser means for launching a laser beam into said electro-optic means to produce a modulated laser beam;
- first optical image display means for converting a first input electric signal into a first optical image and displaying said first optical image so as to be incident on a light-receiving surface of said photoelectric converter;
- first control means for supplying said first input electric signal to said first optical image display means;
- second optical image display means for converting a second input electric signal into a second optical image and displaying said second optical image;
- second control means for supplying said second input electric signal to said second optical image;
- and
- a half mirror for transmitting said first optical image provided from said first display means so as to be incident on said light-receiving surface and for reflecting said second optical image provided from said second display means so as to be incident on said light-receiving surface.
5 more elements
Dependencies are inferred from the claim text.