Illumination optical unit liquid crystal projector and...

Details Illumination optical unit liquid crystal projector and... Illumination optical unit liquid crystal projector and...

2007-04-03

2007-04-03

Perkey, W. B. (Department: 2851)

Optics: image projectors

Particular condenser

C353S037000, C353S038000, C353S099000, C348S751000, C348S761000, C349S005000, C349S095000, C349S113000, C359S622000, C359S627000, C362S268000

Reexamination Certificate

active

10362334

ABSTRACT:
A lighting optical unit having an optical system for irradiating light from a light-source lamp on a predetermined object in a uniform and/or convergent manner includes a reflector for reflecting light from the light-source lamp to provide converged light and an optical assembly for collimating this converged light to provide a bundle of approximately parallel rays, wherein the bundle of approximately parallel rays is made to enter the optical systeml. Thus, in a liquid-crystal projector using a transmission type liquid-crystal panel with micro-lens, while a demand for increasing a quantity of light incident on an effective area of pixel of a liquid-crystal panel is being satisfied, the lighting optical unit can be made compact in size.

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