Flash-emission generated heat triggers shutter opening in camera

Details Flash-emission generated heat triggers shutter opening in camera Flash-emission generated heat triggers shutter opening in camera

1996-11-07

1998-02-10

Blankenship, Howard B.

Photography

Camera detail

Shutter

396493, G03B 1738

Patent

active

057179700

ABSTRACT:
A photographic apparatus, such as a camera, comprises a shutter and a heat sensitive element, for example a bimetallic beam or a fuse, for triggering opening of the shutter in response to being heated. A flash illumination source, such as flash bulb, is positioned adjacent the heat sensitive element. The heat generated during flash emission rapidly heats the heat sensitive element to trigger opening of the shutter in timed relation with flash emission.

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patent: 4664493 (1987-05-01), Takagi
patent: 4757337 (1988-07-01), Shikaumi
patent: 5017954 (1991-05-01), Harvey

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