Camera with movable lens and method of operation

Details Camera with movable lens and method of operation Camera with movable lens and method of operation

1994-07-11

1997-03-25

Metjahic, Safet

Photography

With exposure objective focusing means, focusing aid, or...

Lens drive circuit or motor structure

396 86, 396349, G03B 118, G03B 1704

Patent

active

056149727

ABSTRACT:
A camera is equipped with a photographic lens and a drive for moving the lens relative to the camera body. If an external or other force prevents the lens from moving to a prescribed position within a set time interval, for example, the drive changes the drive speed of the lens from a first-drive speed to a slower, second drive speed. When the external or other force is removed and normal movement of the lens again is possible, the drive changes the drive speed of the lens from the slower, second drive speed to the first drive speed, without requiring complicated restorative action on the part of the operator. Thus, damage to the drive and other components of the camera is prevented, without complicating operation of the camera.

REFERENCES:
patent: Re31219 (1983-04-01), Shenk
patent: Re33016 (1989-08-01), Ishikawa et al.
patent: 4160590 (1979-07-01), Reynard
patent: 4199244 (1980-04-01), Shenk
patent: 4200378 (1980-04-01), Shenk
patent: 4294531 (1981-10-01), Shenk
patent: 4348089 (1982-09-01), Shenk
patent: 4477167 (1984-10-01), Ishikawa et al.
patent: 4984000 (1991-01-01), Watanabe et al.
patent: 5367354 (1994-11-01), Kawasaki et al.

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