Focus area setting apparatus of camera

Details Focus area setting apparatus of camera Focus area setting apparatus of camera

1993-04-30

1994-11-15

Perkey, William B.

354409, 354106, 3541951, 354222, G03B 1336, G03B 1724

Patent

active

053653025

ABSTRACT:
A focus area setting apparatus of a camera includes a zoom lens. A focal length detection unit detects the focal length of the zoom lens. A distance measuring unit detects distances of an object at a plurality of distance measurement points without using the zoom lens. A visual axis direction detection unit is provided near the finder of the camera and detects the visual axis direction of a user. A determining unit obtains a distance measurement enable range Ls in accordance with an equation:

REFERENCES:
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patent: 4509842 (1985-04-01), Taniguchi et al.
patent: 4574314 (1986-03-01), Weinblatt
patent: 4965443 (1990-10-01), Yamasaki et al.
patent: 5245371 (1993-09-01), Nagano et al.
patent: 5245381 (1993-09-01), Takagi et al.

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