Optics: image projectors – Plural projection paths with single light source
Patent
1989-03-28
1990-04-17
Miller, Stanley D.
Optics: image projectors
Plural projection paths with single light source
350331R, 350337, 350339F, 353122, G02F 113, G03B 2100
Patent
active
049174649
ABSTRACT:
A display system is formed by stacking three birefringent LCD panels that are tuned to different substractive primary colors (i.e. yellow, cyan and magenta). Interposed between the panels, and sandwiched about the stack, are polarizers. At least some of the polarizers are colored to improve the resulting brightness. In some embodiments, the assembly is illuminated by a collimated light source and the resulting image is focused onto a projection screen for viewing. In other embodiments, optics on the front and rear surfaces of the assembly permit direct viewing without parallax effects.
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In Focus Systems, Inc.
Mai Huy K.
Miller Stanley D.
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