Reflex camera light detecting arrangement

Details Reflex camera light detecting arrangement Reflex camera light detecting arrangement

1976-03-10

1977-12-20

Tomsky, Stephen J.

354219, 354224, G03B 1302

Patent

active

040645169

ABSTRACT:
A light detecting system for a single lens reflex camera in which an image of the focusing screen is reflected to the normally unused surface of the pentaprism from a partially reflective surface in the viewfinder system. The reflective surface in one form may be glass-to-air interfaces on the viewfinder axis in the eyepiece, but also may be a thin partially reflecting coating.

REFERENCES:
patent: 3478663 (1969-11-01), Tsuruoka et al.
patent: 3620147 (1968-09-01), Ataka et al.
patent: 3631784 (1972-01-01), Jurenz
patent: 3710699 (1973-01-01), Mitani
patent: 3864702 (1975-02-01), Sugiyama et al.
patent: 3952321 (1976-04-01), Matui
patent: 3967287 (1976-06-01), Kimura et al.
patent: 3996594 (1976-12-01), Okuno et al.

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