Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1991-01-25
1992-07-21
Miller, Stanley D.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 72, G02F 1135
Patent
active
051328143
ABSTRACT:
A spatial-light modulator provided with a first electrode formed by a transparent member that receives irradiation of write light corresponding to an optical image in order to form a charge image; a second electrode formed by a transparent member to receive read light irradiated in order to read a formed charge image and to discharge output light equivalent to a read charge image; an optical modulation layer provided to the first electrode side of the second electrode and formed by polymer dispersed liquid crystal material in order to change the intensity distribution of the read light irradiated via the second electrode in accordance with an electrical field intensity distribution due to the charge image; a photoconductive member provided between the first electrode and the optical modulation layer, formed with two different materials of at least amorphous silicon carbide and amorphous silicon as the primary components, and formed in a plural number of layers and having a laminated structure having an optical sensitivity that differs between the first electrode side and the second electrode side; and a dielectric mirror provided between the optical modulation layer and the photoconductive member, that reflects the read light modulated by the optical modulator in the direction of irradiation, and performs the reading of the charge image.
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G. Moddel et al., "High-Speed Binary Optically Addressed Spatial Light Modulator", Appl. Phys. Lett. 55(6) (1989) pp. 537-539.
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Konno Toshio
Ohkouchi Nozomu
Shimizu Shigeo
Takenaka Hiromitsu
Meller Michael N.
Miller Stanley D.
Trice Ron
Victor Company of Japan Ltd.
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