Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1997-04-04
1999-07-20
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
349104, 349116, 250330, 250331, G02F 11335, G02F 1133, G02F 101, G02F 113
Patent
active
059262389
ABSTRACT:
An optical apparatus includes at least an image display device, a light source for illuminating the image display device, a light-receiving device for receiving the light reflected from the eye of an observer, and a calculation device for calculating the line of sight of the observer based on the output of the light-receiving means. At least part of the illuminating light from the light source is utilized as the illuminating light for illuminating the eye of the observer.
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Hoshi Junichi
Inoue Shunsuke
Kohchi Tetsunobu
Miyawaki Mamoru
Canon Kabushiki Kaisha
Sikes William L.
Ton Toan
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