Projector with projection angle adjusting means

Details Projector with projection angle adjusting means Projector with projection angle adjusting means

1997-07-21

1998-08-04

Dowling, William

Optics: image projectors

Lens support

Lens position adjustable

353 70, G03B 2114

Patent

active

057883556

ABSTRACT:
There is disclosed a projector capable of electromechanically controlling the projection angle thereof. The projector of the present invention comprises a round movable member holding a projection lens holder. The round movable member has a gear portion meshed with a first gear rotated by a first motor and is circularly moved up or down with a hinge shaft of a reflection mirror being the center during the rotation of the first gear. The reflection mirror is rotatably supported by a pair of support members. An arcuate member is fixed to the rear surface of the reflection mirror and has a gear portion meshed with a second gear rotated by a second motor. A controller synchronously controls the first and the second motor so that the light reflected by the reflection mirror is transmitted through and projected onto a screen.

REFERENCES:
patent: 4092063 (1978-05-01), Koester
patent: 5599083 (1997-02-01), Mort
patent: 5622417 (1997-04-01), Conner et al.

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