Optical baffling device

Details Optical baffling device Optical baffling device

1994-03-31

1995-01-03

Cuchlinski, Jr., William A.

Optics: image projectors

Reflector

Plural

359855, G03B 2128

Patent

active

053790812

ABSTRACT:
An improved optical baffling device for use with an optical projection system has a base; a plurality of flat reflective surfaces of an equal size on a corresponding member of reflectors mounted on the base, the reflective surfaces being substantially parallel to each other; and the corresponding number of slits disposed in an alternating relationship with the reflective surfaces. A fraction of light from a light source is focused on each of the reflective surfaces and transmitted to a projection screen through a corresponding slit of the optical baffling device. Sine a fraction of light is processed separately, it becomes possible to enhance the optical efficiency of the optical projection system with a reduced amount of modulation of the optical path.

REFERENCES:
patent: 3504117 (1970-03-01), Doeringer
patent: 3989890 (1976-11-01), Nathanson et al.
patent: 4111538 (1978-09-01), Sheridon
patent: 5245369 (1993-09-01), Um et al.
patent: 5260798 (1993-11-01), Um et al.

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