Variable focal length camera

Details Variable focal length camera Variable focal length camera

1990-11-09

1992-03-24

Griffin, Donald A.

354400, G03B 118, G03B 300

Patent

active

050992635

ABSTRACT:
The present invention provides a bifocal camera capable of changing focal length of a photographic lens system and having lens drive means operable by a motor to switch the photographic lens system between a first focal length state wherein a main lens component is located at a rear position and a second focal length state wherein the main lens component is located at a front position and an auxiliary lens component is located at an operative position. This camera comprises a device for automatically stopping the motor when shifting of the main lens component is interrupted by force, and a device for restricting the shifting of the main lens component between the front position and the rear position. The auxiliary lens component is moved and a lens barrier is opened and closed in interlocked relationship with the shifting of the main lens component.

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patent: 4768048 (1988-08-01), Wakabayashi
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