Focusing system in a camera

Details Focusing system in a camera Focusing system in a camera

1977-09-07

1978-11-21

Gellner, Michael L.

G03B 708

Patent

active

041268717

ABSTRACT:
A focusing system in a camera having an automatic focus detector to detect a focusing condition of a photo-taking optical system, an electromagnetic driving motor which is actuated in one direction, being controlled by the detector and having its operation stopped when an in focus state is detected by the detector, a movable member which can restrict the operation of said driving motor and at the same time is shiftable in response to the shifting of the photo-taking optical system, and an indicator which indicates the in focus position and is driven by said driving motor. The photo-taking optical system is shifted from a prescribed position in a predetermined direction for adjusting the focus. The movable member is correspondingly shifted from a prescribed position in a predetermined direction to release the restriction over the driving motor and to line up with the position of the indicator manually setting the optical system to the in focus position indicated by the indicator.

REFERENCES:
patent: 3236166 (1966-02-01), Steisslinger et al.
patent: 3730068 (1973-05-01), Freeland

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