Exposure precision tester and exposure precision testing method

Details Exposure precision tester and exposure precision testing method Exposure precision tester and exposure precision testing method

1998-01-16

1999-04-20

Perkey, W. B.

Photography

Exposure control circuit

396269, 396270, 396512, 396429, 73 156, G03B 4300

Patent

active

058951326

ABSTRACT:
In an exposure precision tester for a camera, including a flexible wiring board where a photometric sensor is implemented is contained in a case. The case has an appearance similar to that of a film cartridge loaded by drop-in operation and is insertable into a film cartridge cell of the camera. Exposure test can be performed without a back lid because the photometric sensor measures and outputs the exposure energy in the state that the photometric sensor is positioned at a film mask portion by rotating an operation part of a feed shaft with the case being inserted in the camera.

REFERENCES:
patent: 3719130 (1973-03-01), Scott, Jr.
patent: 4096732 (1978-06-01), Springer
patent: 4423934 (1984-01-01), Lambeth et al.
patent: 5815739 (1998-09-01), Marra et al.

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