Device for setting exposure quantity

Details Device for setting exposure quantity Device for setting exposure quantity

1981-11-12

1984-02-28

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Illumination systems or details

354 31, 354432, G03B 2780

Patent

active

044339089

ABSTRACT:
A device for setting exposure quantity for use in micro-film cameras projectors and so forth, wherein an object to be photographed or projected is divided into a plurality of sections, and a quantity of light reflected from, or transmitted through, the object is metered for each of the divided sections, thereby setting the exposure quantity in accordance with the section where the reflected or transmitted light quantity as metered is the maximum.

REFERENCES:
patent: 3563143 (1971-02-01), Petersen
patent: 3690765 (1972-09-01), Rickard et al.
patent: 3736851 (1973-06-01), Ono et al.
patent: 3790275 (1974-02-01), Huboi et al.
patent: 4018526 (1977-04-01), Schroter
patent: 4124295 (1978-11-01), Gardiner
patent: 4214826 (1980-07-01), Uchida et al.

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