Still projector with single-acting compensation device

Details Still projector with single-acting compensation device Still projector with single-acting compensation device

1975-05-12

1976-06-15

Haroian, Harry N.

Optics: image projectors

Distortion compensation

For projection axis inclined to screen

353101, 353 87, G03B 2100

Patent

active

039633373

ABSTRACT:
In order to compensate for the "Keystone-effect," a still projector is equipped with a vertically adjustable lens holder, which is coupled by a sliding pivot to a pivotable lamp housing. The lamp housing has a pair of arms projecting therefrom, which have slots extending therein which, in turn, register with pins positioned in the lens holder. The pins are located adjacent the rear nodal plane of the lens, and are aligned with an axis, which intersects the optical axis of the lens. Upon adjusting the holder vertically, the lamp housing will tilt to insure that the projected image will angularly conform to the original.

REFERENCES:
patent: 1952522 (1934-03-01), Warmisham
patent: 2679784 (1954-06-01), Simmon

Affiliated with

Also associated with

Rating

Still projector with single-acting compensation device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Still projector with single-acting compensation device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Still projector with single-acting compensation device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1691955