Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-08-12
1994-05-10
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 53, 359 63, G02F 1133
Patent
active
053113390
ABSTRACT:
A liquid-crystal display has a liquid-crystal cell (1) which is formed of two substrates (2) spaced apart from each other, and is filled with a nematic liquid-crystal substance (4). On the cell inner-space side, electrode layers (3) which can be acted on by voltage are arranged on the substrates (2). On the cell outside space side, a double-refracting compensation layer extends over the cell surface. Liquid-crystal cell (1) and compensation layer are arranged between two polarization filters (11). The compensation layer is developed over its surface with a plurality of regions adjacent to each other. The amount of the double refraction of the regions differs from each other by a small amount.
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Patent abstract of Japan, vol. 13, No. 89 (P-836) Apr. 2, 1989.
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Fertig Werner
Ott Thomas
Wahl Jurgen
Farber Martin A.
Mai Huy
Optrex Europe GmbH
Sikes William L.
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