Patent
1976-12-27
1979-01-16
Gonzales, John
354 53, 354219, G03B 1700
Patent
active
041346610
ABSTRACT:
An exposure indicating device for a single lens reflex camera having a built-in TTL exposure meter to indicate photographic information on photographic information members within a view finder with the help of external light, and having an eye-piece shutter to intercept the view finder optical system at its eye-piece section, wherein there are further provided a light emitting element at a position at which the photographic information members can be illuminated for indication within the view finder, and at which the light emitting element is able to emit light outside the camera body; and change-over means which is interlocked with opening and closing of the eye-piece shutter to connect the light emitting element to a power source through switching means operable from outside, when the eye-piece shutter is open, and to connect the light emitting element to the power source through an exposure measurement circuit of the TTL exposure meter, when the eye-piece shutter is closed.
REFERENCES:
patent: 3791273 (1974-02-01), Beach
patent: 4001850 (1977-01-01), Fujita
patent: 4034392 (1977-07-01), Ishizaka et al.
Ishizaka Sunao
Kawahara Yasuhito
Gonzales John
Nippon Kogaku K.K.
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