Method and apparatus for controlling a retractable camera barrel

Details Method and apparatus for controlling a retractable camera barrel Method and apparatus for controlling a retractable camera barrel

1994-06-13

1996-06-04

Blankenship, Howard B.

3541951, G03B 1704

Patent

active

055238149

ABSTRACT:
A camera includes a lens barrel which can be retracted into a camera body, and a lens barrel storage control apparatus. The lens barrel has a front lens group mounted in a front end portion thereof and a rear lens group movably disposed therein. The lens barrel storage control apparatus controls a DC motor for retracting the lens barrel, if the rear lens group is in a safe area where it will come into no contact with a film in retracting the lens barrel into the camera body, and then controls a stepping motor for locating the rear lens group to a final standby position after completion of storage. On the other hand, if the rear lens group is out of the safe area, the control apparatus controls the stepping motor for locating the rear lens group to the rearmost position in the safe area, and controls the DC motor for retracting the lens barrel.

REFERENCES:
patent: 5153626 (1992-10-01), Yamamoto
patent: 5359381 (1994-10-01), Miyazawa et al.

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