Light measurement device for single lens reflex camera

Details Light measurement device for single lens reflex camera Light measurement device for single lens reflex camera

1984-02-10

1985-04-09

Hix, L. T.

354480, G03B 708, G03B 700, G03B 1720

Patent

active

045098492

ABSTRACT:
In the disclosed apparatus, a photographic optical system passes light to an image plane on which a film or other sensor is to be arranged, and an optical member between the optical system and the image plane allows light from the optical system to pass while it directs light from the image plane toward a light sensor. The light sensor is outside of the light path from the optical system to the image plane.

REFERENCES:
patent: 3672284 (1972-06-01), Schwarz
patent: 4170410 (1979-10-01), Sekida et al.
patent: 4172643 (1979-10-01), Schulz et al.
patent: 4178084 (1979-12-01), Matsumoto et al.

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