Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-09-22
1996-12-24
Fahmy, Wael
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
252221, 252548, 349182, G02F 11343, G02F 1135, G02F 1137, H01J 4014
Patent
active
055878202
ABSTRACT:
An integrated electro-optical device according to the invention comprises a pixellated liquid crystal modulation layer superimposed over an electronic detection layer. Modulator pads for the liquid crystal layer may be formed as electrically conductive combs to achieve optical polarization. Where the liquid crystal layer provides selective absorption of unpolarized light, and separate polarizers between the liquid crystal and detection layers are therefore unnecessary, the device comprises such a liquid crystal layer superimposed over the electronic detector layer. Further, an integrated electro-optical device, optionally of the above type, has a plurality of pixels of the liquid crystal layer for each pixel of the detector array. This allows optical shuttering of the detector pixels by electrically modulating the pixellated liquid crystal layer.
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Harrold Jonathan
May Paul
Raynes Edward P.
Robinson Michael G.
Tombling Craig
Abraham Fetsum
Fahmy Wael
Sharp Kabushiki Kaisha
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