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US 8,411,339 B2Granted
Holographic imaging systems with DC balance
AssigneeF. Poszat HU, LLC
InventorMaurice Stanley
Life of this patent
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Abstract
A holographic imaging system includes an electrical addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM). A read light is configured to illuminate the OASLM, and a controller is configured to address the EASLM with both positive and negative sub-images and transmit the positive and negative sub-images to the OASLM. The controller is further configured to address the OASLM with an operating voltage, wherein the read light generates a holographic image comprised of diffraction patterns from the positive and negative sub-images.
Claims15
A method comprising:
- addressing an electrically addressable spatial light modulator (EASLM) to form a succession of both positive and negative holographic sub-images, wherein the positive and negative holographic sub-images provide for a direct current (DC) balance of the EASLM;
- transmitting the positive and negative holographic sub-images to an optically addressable spatial light modulator (OASLM);
- writing the positive and negative holographic sub-images onto a plurality of segments of the OASLM;
- providing a blanking pulse to the plurality of segments in between writing the positive and negative holographic sub-images;
- and
- generating a holographic image comprising the positive and negative holographic sub-images.
3 more elements
A system comprising:
- an electrically addressable spatial light modulator (EASLM);
- a write light configured to illuminate the EASLM;
- an optically addressable spatial light modulator (OASLM);
- a read light configured to illuminate the OASLM;
- and
- a controller configured to:
- address the EASLM to form a succession of both positive and negative holographic sub-images, wherein the positive and negative holographic sub-images provide for a direct current (DC) balance of the EASLM;
- transmit the positive and negative holographic sub-images to the OASLM;
- write the positive and negative holographic sub-images onto a plurality of segments of the OASLM;
- provide a blanking pulse to the plurality of segments in between writing the positive and negative holographic sub-images;
- and
- generate a holographic image comprising the positive and negative holographic sub-images.
9 more elements
Dependencies are inferred from the claim text.