Projection display apparatus using liquid crystal light bulb

Details Projection display apparatus using liquid crystal light bulb Projection display apparatus using liquid crystal light bulb

1996-01-29

1999-08-17

Dowling, William C.

Optics: image projectors

Unitary plural refracting surfaces

353 81, G03B 2114

Patent

active

059383070

ABSTRACT:
A projection display apparatus includes a light source unit for emitting light, a modulation unit for spatially modulating the light from the light source unit, and a projection lens for projecting light spatially modulated by the modulation unit on a screen so that a picture corresponding to spatial modulation in the modulation unit is formed on the screen. A deflection unit is located between the light source and the modulation unit and deflecting beams are included in the light from the light source unit toward an optical axis to prevent the beams from traveling out of the modulation unit.

REFERENCES:
patent: 5005968 (1991-04-01), Tejima et al.
patent: 5418583 (1995-05-01), Masumoto
patent: 5438379 (1995-08-01), Kurematsu
patent: 5467207 (1995-11-01), Forkuer et al.

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