Focusing operation changeover apparatus for a camera

Details Focusing operation changeover apparatus for a camera Focusing operation changeover apparatus for a camera

1988-01-26

1990-01-09

Perkey, W. B.

3541951, 35419513, 350255, G03B 310, G03B 702

Patent

active

048931454

ABSTRACT:
A group of photographic lenses are disposed in a lens barrel in such a way as to be freely movable back and forth in the direction of the optical axis thereof and the group of photographic lenses are driven by an automatic focusing means in accordance with the range of a distance from an object, whereby automatic focusing is attained. In addition, a manual control device is provided for moving the photographic lenses in the direction of the optical axis thereof. Also a connection between the manual control device and the photographic lenses is cut off by controlling a changeover device.

REFERENCES:
patent: 4272174 (1981-06-01), Terramoto et al.
patent: 4309077 (1982-01-01), Tomori
patent: 4333712 (1982-06-01), Tomori
patent: 4413894 (1983-11-01), Miki et al.
patent: 4461544 (1984-07-01), Isobe et al.
patent: 4553817 (1985-11-01), Ando et al.
U.S. Ser. No. 171,748, Hama, 3/22/88.

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