Video projector focus adjustment mechanism

Details Video projector focus adjustment mechanism Video projector focus adjustment mechanism

1984-12-04

1986-08-26

Haroian, Harry N.

Optics: image projectors

Lens support

Lens position adjustable

G03B 300

Patent

active

046079246

ABSTRACT:
A video projector focus adjustment mechanism for use with a video projector and a projection lens is provided. The mechanism includes first focusing device for slidably focusing a first focusing element and a second focusing device for rotatably focusing a second focusing element.

REFERENCES:
patent: 465409 (1891-12-01), Knipe
patent: 1883673 (1932-10-01), Fouquet
patent: 1954876 (1934-04-01), Joannides
patent: 3744884 (1973-07-01), Filipovich et al.

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