Camera

Details Camera Camera

1979-08-28

1981-10-13

Griffin, Donald A.

G03B 1720

Patent

active

042945291

ABSTRACT:
In the camera disclosed, a volume type diffraction device having an indicium recorded therein to be reproduced later, is sealed between transparent optical members and arranged in the finder optical path so that when illuminated by a light source at an oblique angle, the indicium is reproduced, represents photographic information to be displayed in the finder.

REFERENCES:
patent: 3668985 (1972-06-01), Wazumi
patent: 4114995 (1978-09-01), Stieringer et al.
patent: 4142786 (1979-03-01), Suzuki et al.
patent: 4165930 (1979-08-01), Matsumoto et al.

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