Light-to-light conversion element provided with wavelength selec

Details Light-to-light conversion element provided with wavelength selec Light-to-light conversion element provided with wavelength selec

1990-03-22

1992-06-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

358209, 359 72, H01J 3150, H04N 530

Patent

active

051245450

ABSTRACT:
A light-to-light conversion element which includes at least a photoconductive layer and a photo-modulation layer and in which light incident on these layers is reflected by a reflection layer and in which a selective reflection characteristic corresponding to color separation is given to the reflection layer. Thereby, among the light incident on the photoconductive layer and the photo-modulation layer, light having wavelength of the specific region is selectively reflected by the reflection layer, so that the write and read operation of information is performed on the selected light.

REFERENCES:
patent: 3666881 (1972-05-01), Stein
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4150876 (1979-04-01), Yevick
patent: 4185894 (1980-01-01), Hilton et al.
patent: 4368386 (1983-01-01), Huignard et al.
patent: 4481531 (1984-11-01), Warde et al.
patent: 4920417 (1990-04-01), Takanashi et al.
patent: 4989076 (1991-01-01), Onada et al.
Optical Engineering, vol. 17, No. 4, Jul.-Aug. 1978, W. P. Bleha et al., "Application of the liquid Crystal Light Valve to Real-Time Optical Data Processing".
Applied Optics, vol. 21, No. 20, Oct. 15, 1982, P. Aubourg et al., "Liquid crystal light valve using bulk monocrystalline Bi12 Si020 as photoconductive material".

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