Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1994-03-14
1997-05-20
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349 5, G02F 11333, G02F 11335
Patent
active
056317506
ABSTRACT:
A liquid crystal device for controlling scattering of light beams incident upon a liquid crystal layer so as to modulate the light beams includes: a first lens array having lenses corresponding to the liquid crystal layer, the lenses causing the light beams transmitted from the liquid crystal layer, the lenses causing the light beams transmitted from the liquid crystal layer to travel toward a focal plane; a mask for shielding scattered light transmitted from the first lens array as well as allowing non-scattered light to pass through, the mask having a plurality of aperture portions which are formed along the focal plane to correspond to the lenses of the first lens array so as to allow non-scattered light transmitted from corresponding lenses to pass through; and a second lens array having lenses arranged to correspond to the aperture portions of the mask, the lenses substantially collimating the non-scattered light transmitted from corresponding aperture portions of the mask.
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Kurematsu Katsumi
Minoura Nobuo
Mitsutake Hideaki
Suzuki Hidetoshi
Yoshinaga Kazuo
Canon Kabushiki Kaisha
Miller Charles
Sikes William L.
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