Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1997-01-09
1998-11-24
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349196, 359122, 359246, 359247, G02F 11343, G02F 113, G02F 103, H04J 1406
Patent
active
058415009
ABSTRACT:
A liquid-crystal cell having plates defining a gap between them which is filled with a liquid crystal, especially a twisted nematic. The plates are made non-parallel to a predetermined degree so that the liquid crystal assumes a wedge shape, producing different effective thicknesses of the liquid crystal depending on the lateral position within the cell. In use, a narrow beam irradiates a portion of the cell, and the cell is positioned along the wedge direction so as to optimize the cell performance. The invention is particularly useful with a liquid-crystal multi-wavelength switch, which requires extinction ratios between the two states of the cell.
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Malinowski Walter
Sikes William L.
Tellium Inc.
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