Anamorphic enlarging system

Details Anamorphic enlarging system Anamorphic enlarging system

1975-03-26

1976-12-21

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Distortion introducing or rectifying

355 77, G03B 2768, G03B 2732

Patent

active

039985458

ABSTRACT:
The enlarging system includes a projection housing for receiving a negative film insert device supporting an anamorphic negative film image which is projected towards a working surface. Below the insert device is a projection lens, lens adapter, anamorphic lens secured in the adapter, and a dioptor lens. A light bellows connects between the projection lens and the negative film insert device. A first adjustment is used to vary the distance of the entire projection housing and lens system towards and away from the working surface. A second adjustment, in turn, varies the distance of the lens system from the negative film insert device. The dioptor in combination with the anamorphic lens permits a selected format size for the enlarged print to be chosen, the first adjustment matching perfectly the projected image with the selected format. The second adjustment brings the image into a fine focus.

REFERENCES:
patent: 1032172 (1912-07-01), Zollinger
patent: 1829633 (1931-10-01), Chretien
patent: 1932082 (1933-10-01), Newcomer
patent: 3644037 (1972-02-01), Larraburu
patent: 3743414 (1973-07-01), Kirchoff

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