Optics: image projectors – Plural projection paths with single light source
Patent
1988-04-13
1990-03-20
Miller, Stanley D.
Optics: image projectors
Plural projection paths with single light source
350345, 350337, 353 31, G02F 113
Patent
active
049096010
ABSTRACT:
A projection-type display device for producing a well balanced color image without the use of a neutral density filter. The device includes three liquid crystal light valves associated with the three primary colors and two dichroic mirrors. A light source generates colored light. The optical length between the light source and the light valve associated with the primary color of the colored light having the highest level of luminous intensity is greater than the optical lengths between the light source and each of the other two light valves. One of the three liquid crystal light valves is driven by circuitry to produce an image which is a mirror image of the images produced by the other two light valves.
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Nakamura Jun-ichi
Yajima Akitaka
Kaplan Blum
Miller Stanley D.
Seiko Epson Corporation
Thantu Napoleon
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