Single lens reflex camera

Details Single lens reflex camera Single lens reflex camera

1979-11-26

1981-10-20

Gonzales, John

354225, 354289, G03B 1720, G03B 1912

Patent

active

042957230

ABSTRACT:
A single lens reflex camera in which the barrel information image is indicated in the lower portion of the image of an object view field and the image of photographing informations arranged on portions other than the lens barrel is indicated in the finder. Two windows for introducing the information lights are arranged on the front non-reflecting surface of the penta prism in a vertical direction with respect to the plane including the edge line separating the roof surfaces of the penta prism. One of the windows is relatively small, and positioned remote from the edge line, while the other window is relatively large, transversing the edge line. The barrel information light is turned in the above vertical direction by a mirror provided just above the barrel, and introduced into the penta prism from the one window through an intermediate mirror, while the photographing information light is introduced into the penta prism from the other window. The lights thus introduced pass the same optical path in the plane mentioned above and are emitted from the exit surface of the penta prism, and the lights thus emitted are reflected in the prism arranged between the exit surface of the penta prism and the ocular and directed to the lower portion of the ocular.

REFERENCES:
patent: 3800655 (1974-04-01), Uchida
patent: 3911457 (1975-10-01), Okuno
patent: 3962710 (1976-06-01), Okuno et al.
patent: 4118723 (1978-10-01), Yamazaki et al.
patent: 4131355 (1978-12-01), Kumura et al.

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