Camera with switching mechanism for selective operation of a ret

Details Camera with switching mechanism for selective operation of a ret Camera with switching mechanism for selective operation of a ret

1994-06-10

1995-10-24

Adams, Russell E.

3541951, G03B 1704

Patent

active

054614414

ABSTRACT:
A camera uses a drive mechanism to scroll a lens barrel in and out of a camera body and to open and close a lens barrier that covers the front of the lens barrel. A spring is attached to the lens barrier, providing a spring force in the closing direction of the barrier and thereby preventing motion of the barrier in the opening direction of the barrier under an external force. A single electric motor is provided for driving a switching device, which includes a series of gears. The switching device switches power transmission of the motor between the lens barrel and the lens barrier, depending on the direction of rotation of the motor. Switching between scrolling in and out of the lens barrel and opening and closing of the lens barrier is possible only when the lens barrier can move in front of the lens barrel.

REFERENCES:
patent: 4806961 (1989-02-01), Kamitani et al.
patent: 4876563 (1989-10-01), Ishida et al.
patent: 5051765 (1991-09-01), Yoshizaki et al.
patent: 5274410 (1993-12-01), Kuwada et al.

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