Image projection system

Details Image projection system Image projection system

1996-08-27

1998-08-18

Dowling, William

Optics: image projectors

Miscellaneous

G03B 2114

Patent

active

057950490

ABSTRACT:
An image projector is provided with a light valve having an upstream side and an downstream side. A light source is disposed on the upstream side of the light valve, and a front lens system with an entrance pupil is disposed on the downstream side of the light valve. A back optical system is disposed between the light source and the light valve. The back optical system has a nonimaging device with an exit aperture that is either imaged into the entrance pupil of the front lens system (Kohler) or imaged onto the light valve (Abbe).

REFERENCES:
patent: 5108172 (1992-04-01), Flasck
patent: 5459592 (1995-10-01), Shibatani et al.
patent: 5513023 (1996-04-01), Fritz et al.
patent: 5535025 (1996-07-01), Hegg

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