Mirror reflex camera with an electronic range finder

Details Mirror reflex camera with an electronic range finder Mirror reflex camera with an electronic range finder

1982-03-15

1984-01-31

Gellner, Michael L.

G03B 300

Patent

active

044286538

ABSTRACT:
In a mirror reflex camera (1) having a viewer system consisting of a focusing screen (4), a field lens (5) a pentaprism (7) and an ocular (6) and with an electronic range finder (9, 10a10n), an optical means (11) defining a measuring spot is arranged in the plane of the focusing screen for the purpose of splitting the exit pupil (AP) of the picture-taking objective (2). This optical means is a clear-glass wedge and splits a partial beam (12) off the viewer beam (8). This partial beam serves to generate, upon its reflection from the surfaces 7b and 7a of the pentaprism (7) and from the concave mirror 7d ground on the lower edge of the exit side 7c, an image (B") of the object onto the lens elements 10a-10n of the array (9)of photoelectric detectors. The outer bounding 30 of the concave mirror 7d is selected to be rectangular or square and the radii of the lens elements (10a-10n) are such that only one particular pair of detectors of the array (9) of photoelectric detectors is impinged by light from the lens elements 10a-10n.

REFERENCES:
patent: 4185191 (1980-01-01), Stauffer
patent: 4188102 (1980-02-01), Schaefer
patent: 4200786 (1980-04-01), Holle

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