Liquid crystal lenses having a Fresnel lens

Details Liquid crystal lenses having a Fresnel lens Liquid crystal lenses having a Fresnel lens

1988-05-27

1990-02-27

Miller, Stanley D.

350331R, 350336, 350452, G02F 113, G02B 106

Patent

active

049040634

ABSTRACT:
A liquid crystal lens includes a liquid crystal cell formed by lens component members, at least one of the lens component members being formed of a Fresnel lens whose surface is formed by a number of annular ring-shaped Fresnel grooves with their crests leveled.

REFERENCES:
patent: 4037929 (1977-07-01), Bricot et al.
patent: 4190330 (1980-02-01), Berreman
patent: 4208115 (1980-06-01), Proske
patent: 4279474 (1981-07-01), Belgorod
patent: 4300818 (1981-11-01), Schachar
patent: 4373218 (1983-02-01), Schachar
patent: 4576441 (1986-03-01), Kubick
patent: 4601545 (1986-07-01), Kern
patent: 4670095 (1987-06-01), Negishi
patent: 4795248 (1989-01-01), Okada et al.

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