Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1989-03-02
1990-07-17
Miller, Stanley D.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
350333, 350331R, 350338, 350385, 350334, 250213R, G02F 113
Patent
active
049417355
ABSTRACT:
A liquid crystal spatial light modulator is disclosed having a pair of spaced transparent plates on which two electrically conductive films are coated in confronting relation. A continuous or discontinuous photosensitive film is coated on one of the conductive films. A bistable ferroelectric liquid crystal is confined between the other conductive film and the photosensitive film. An activating voltage source is applied to the conductive films. Modulator pixels are defined by a plurality of small electrically conductive elements that are carried by the photosensitive film. These conductive elements may be either transparent to a reading wavefront, or they may be reflective to a reading wavefront. An apertured film is also mounted on the photosensitive film substantially coplanar with the conductive elements. The apertures in this film coincide with the positions of the conductive elements and are spaced therefrom, to thereby leave a ring-shaped area of exposed photosensitive film surrounding each reflector element. A plurality of opaque rings are carried by said other conductive film, so as to overlie the ring-shaped area of exposed photosensitive film that surrounds each conductive element. Individual pixels of the modulator are addressed by light activating the portion of the photosensitive film that is associated with the addressed pixel's individual conductive element. Photodiode and photoconductive pixel cells are disclosed.
REFERENCES:
patent: 3824002 (1974-07-01), Beard
patent: 3855579 (1974-12-01), Grenot et al.
patent: 4110014 (1978-08-01), Yevick
patent: 4277145 (1981-07-01), Hareng et al.
patent: 4367924 (1983-01-01), Clark et al.
patent: 4368386 (1983-01-01), Huignard et al.
patent: 4538884 (1985-09-01), Masaki
patent: 4619501 (1986-10-01), Armitage
patent: 4655554 (1987-04-01), Armitage
patent: 4679910 (1987-07-01), Efron et al.
patent: 4693561 (1987-09-01), Ashley
patent: 4728174 (1988-03-01), Grinberg et al.
patent: 4826293 (1989-05-01), Grinberg et al.
"Amorphous Silicon Photoconductor in a Liquid Crystal Spatial Light Modulator", by Paul R. Ashley & Jack H. Davis, Applied Optics, 15 Jan. 1987, vol. 26, No. 2, pp. 241-246.
"High-Speed Light Valve Using an Amorphous Silicon Photosensor and Ferroelectric Liquid Crystals", by N. Takahashi, H. Asada, M. Miyahara & S. Kurita, Applied Physics Letters, vol. 51, No. 16, 19 Oct. 1987.
"Photoaddressing of High Speed Liquid Crystal Spatial Light Modulators", by Garret Moddel, Kristina M. Johnson, Mark A. Handschy, Reprint from The Proceedings of Spie-The International Society for Optical Engineering, vol. 754, 13-15 Jan. 1987, pp. 207-213.
Johnson Kirstina M.
Moddel Garret R.
Mai Huy K.
Miller Stanley D.
Sirr Francis A.
University of Colorado Foundation Inc.
LandOfFree
Optically addressable spatial light modulator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optically addressable spatial light modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optically addressable spatial light modulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-92429