Projection-lens driving apparatus for a 3-beam projector

Details Projection-lens driving apparatus for a 3-beam projector Projection-lens driving apparatus for a 3-beam projector

1995-09-07

1996-07-16

Dowling, William C.

Optics: image projectors

Lens support

Lens position adjustable

359694, G03B 2100, G02D 1514

Patent

active

055371698

ABSTRACT:
The projection-lens driving apparatus for use in a 3-beam projector comprises an upper plate, an upper projection-lens holder, a pair of cross links, a pair of lower projection-lens holders, a guide member, and a driving means for driving the guide member. The upper and the lower projection-lens holders are fitted to the guide member in such a way that they can be driven integrally using the driving means, thereby allowing images to coincide on a screen simply, accurately and, above all, simultaneously.

REFERENCES:
patent: 5125733 (1992-06-01), Lee
patent: 5426471 (1995-06-01), Tanaka et al.

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