Liquid crystal cells – elements and systems – Liquid crystal optical element – Liquid crystal lenses other than for eyewear
Patent
1997-10-14
1998-09-29
Sikes, William L.
Liquid crystal cells, elements and systems
Liquid crystal optical element
Liquid crystal lenses other than for eyewear
349 57, G02F 113, G02F 11335
Patent
active
058152334
ABSTRACT:
A liquid crystal active lens having, in combination, a fixed-focal-point lens having a high index of refraction and a phase modulation element comprising two-dimensionally arranged fine pixels, and having power and being capable of electrically controlling the lens characteristics as a function of space. An electrically controlled optical system can be realized without having a moving portion. Owing to the combination of the liquid crystal element for modulating space phase and the high-power lens of a fixed focal length, it is possible to electronically control the focal length and to electronically control the lens in a spatially split manner.
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Morokawa Shigeru
Takaki Yasuhiro
Citizen Watch Co. Ltd.
Nguyen Tiep H.
Sikes William L.
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