Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1979-02-09
1981-04-21
Hix, L. T.
Optics: measuring and testing
Range or remote distance finding
With photodetection
354 60L, 356226, G03B 1718, G01J 144
Patent
active
042629977
ABSTRACT:
An exposure information indicating device for use in photography includes a detecting section for detecting various known information values such as brightness or luminance of an object and film sensitivity represented by ASA number, a calculating section for calculating an unknown exposure information value such as f/stop number and a display section for digitally displaying the calculated value.
REFERENCES:
patent: 3895875 (1975-07-01), Kitaura et al.
patent: 3909137 (1975-09-01), Kisanuki
patent: 4135795 (1979-01-01), Uno et al.
Hix L. T,.
Minolta Camera Kabushiki Kaisha
Perkey William B.
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