Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1990-09-10
1993-09-14
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 74, 359 82, 359 93, 359 71, G02F 1135
Patent
active
052454550
ABSTRACT:
A light valve (10) includes a layer of a liquid crystal (16), a MOS substrate structure (18) with a dielectric layer (24) and a semiconductor layer (26), and an optically isolating mirror (14) between the liquid crystal layer (16) and the substrate structure (18). An external AC biasing voltage is applied across the MOS substrate (18) and the liquid crystal layer (16). The liquid crystal layer (16) is sufficiently thick that it operates in the surface birefringent mode with a high contrast ratio and a short response time to changes in the write-in light beam, when a sufficiently high biasing voltage V.sub.p is applied.
REFERENCES:
patent: 4126382 (1978-11-01), Barzilai et al.
patent: 4191454 (1980-03-01), Braatz et al.
patent: 4239348 (1980-12-01), Grinberg et al.
patent: 4443064 (1984-04-01), Grinberg et al.
patent: 4582396 (1986-04-01), Bos et al.
patent: 4595259 (1986-06-01), Perregaux
patent: 4779959 (1988-10-01), Saunders
J. Fergason--"Performance of a Matrix Display Using Surface Mode" Conference Record, Biennial Display Research--1980--pp. 177-179.
K. Uehara et al., "Reduction of Electro-Optical Response Times of a Field-Effect LCD: Application to Dynamic Driven Real Time Display" IEEE Transactions on Electrons Devices, vol. ED-22-No. 9-Sep. 1975-pp. 804-805.
P. R. Ashley et al., "Amorphous Silicon Photoconductor in a Liquid Crystal Spatial Light Modulator", Applied Optics, vol. 26, No. 2, Jan. 15, 1987 pp. 241-246.
"High-speed liquid-crystal modulators using transient nematic effect", S. Wu et al, J. Appl. Phys. 65(2), Jan. 15, 1989, pp. 527-532.
"The silicon liquid-crystal light valve", U. Efron et al, J. Appl. Phys. 57(4), Feb. 15, 1985, pp. 1356-1368.
"High performance single crystal silicon liquid crystal light valve with good image uniformity", K. Sayyah, et al., Applied Optics, vol. 28, No. 22, Nov. 15, 1989 pp. 4748-4756.
"Small angle relaxation of highly deformed nematic liquid crystals", S. Wu, et al Appl. Phys. Lett. 53(19), Nov. 7, 1988, pp. 1794-1796.
"Near-infrared-to-visible image conversion using a Si liquid-crystal light valve", S. Wu, et al., Optics Letters, vol. 13, No. 1, Jan. 1988, pp. 13-15.
"Design of a liquid crystal based tunable electrooptic filter", S. Wu, Applied Optics, vol. 28, No. 1, Jan. 1, 1989, pp. 48-52.
Sayyah Keyvan
Wu Chiung-Sheng
Denson-Low W. K.
Duong Tai V.
Duraiswamy V. D.
Hughes Aircraft Company
Sikes William L.
LandOfFree
MOS light valve with nematic liquid crystal operating in the sur does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with MOS light valve with nematic liquid crystal operating in the sur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MOS light valve with nematic liquid crystal operating in the sur will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2031815