Multi format shutterless motion picture inspection projector

Details Multi format shutterless motion picture inspection projector Multi format shutterless motion picture inspection projector

1983-02-01

1985-04-09

Hayes, Monroe H.

Optics: motion pictures

Projection light sources

Intermittent light

352 79, G03B 2100, G03B 4100, G03B 2120

Patent

active

045098360

ABSTRACT:
A multi format shutterless inspection projector for motion picture film whereby the image projected will include a full frame heightwise and margin to margin widthwise to view the picture, sound track and sprocket holes. The apparatus includes condensing lenses, projection lenses and a shutterless film gate mounted therebetween. The illumination means is a strobe light and accompanying apparatus capable of exciting the lamp to micro-second flashes. In addition triggering means is on the projector to fire the strobe light apparatus and the triggering means is geared to the speed of travel of the film through the projector. Further, damping means are provided to control tension on the film as it enters the projector and also there are means to control the speed of the takeup reel motor.

REFERENCES:
patent: 1786917 (1930-12-01), Oehmichen
patent: 2473625 (1949-06-01), Wheeler
patent: 3640438 (1972-02-01), Morse et al.

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