Accession Number : ADD015731

Title :   Spatial Light Modulator Having Photosensitive and Ferroelectric Layers.

Descriptive Note : Patent Application, Filed 22 Jan 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Chu, Tak-Kin

Report Date : 22 Jan 1993

Pagination or Media Count : 9

Abstract : A spatial light modulator is optically addressable by exposure of a vitreous selenium layer to illumination of a write beam through a transparent electrode film, thereby establishing an electrically conductive path from a voltage source to a ferroelectric liquid crystal layer in contact with conductive reflector elements arranged in a pixel pattern. Changes in polarization of the ferroelectric layer are detected by means of a read beam transmitted therethrough to the reflector elements for reflection and exit from another transparent electrode film through which the read beam is applied.

Descriptors :   *LIGHT MODULATORS, *PATENTS, CRYSTALS, ELECTRODES, EXITS, ILLUMINATION, LAYERS, LIQUID CRYSTALS, PATHS, PATTERNS, PIXELS, POLARIZATION, REFLECTION, REFLECTORS, SELENIUM, VOLTAGE, TRANSPARENCIES, FERROELECTRIC CRYSTALS, THIN FILMS, ELECTRICAL CONDUCTIVITY

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE