Photography – Having photocell at specific position within camera – Having variable light transmission means
Patent
1995-06-26
1998-04-07
Metjahic, Safet
Photography
Having photocell at specific position within camera
Having variable light transmission means
396272, 396268, 396273, 396100, G03B 700, G03B 1720
Patent
active
057376484
ABSTRACT:
A photometric device, to measure light incident from a photographic lens of a camera, which can perform accurate photometry, independently of the direction of polarization of the incident light. The photometric device is provided with a first semi-transparent mirror, located between the photographic lens and an imaging plane of the camera, for dividing incident light from the photographic lens into a reflected beam and a transmitted beam. A second semi-transparent mirror is located in a position where the reflected beam from this first semi-transparent mirror is incident, and divides the incident light into a reflected beam and a transmitted beam. A photometric unit, for performing photometry, is located in a position to receive light of the transmitted beam from the second semi-transparent mirror.
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Ejima Satoshi
Kitsugi Yasuo
Dalakis Michael
Metjahic Safet
Nikon Corporation
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