Patent
1990-10-23
1991-11-05
Perkey, W. B.
G03B 1336
Patent
active
050634020
ABSTRACT:
A lens retracting apparatus for a photo-taking device which comprises an interchangeable photo-taking lens, a main switch selectively switchable between an ON position for enabling an operation of the photo-taking device and an OFF position for inhibiting the operation of the camera, a focus detecting unit, a drive unit for selectively retracting and extending a focusing lens of the photo-taking lens toward an in-focus position on the basis of a result of focus detection carried out by the focus detecting unit, a discriminating unit for determining whether or not the photo-taking lens is retracted to a predetermined position, and a control means for driving the drive unit to retract the photo-taking lens only by switching off the main switch and also for stopping the drive unit when a condition in which the photo-taking lens is retracted to the predetermined position is determined by the discriminating unit.
REFERENCES:
patent: 4348089 (1982-09-01), Shenk
patent: 4374613 (1983-02-01), Stempeck
patent: 4743931 (1988-05-01), Matsuzaki et al.
Fujino Akihiko
Nakai Masaaki
Ootsuka Hiroshi
Shimada Takahisa
Tsuji Kenji
Minolta Camera Kabushiki Kaisha
Perkey W. B.
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