Lens barrel containing an automatic focus matching device therei

Details Lens barrel containing an automatic focus matching device therei Lens barrel containing an automatic focus matching device therei

1983-02-10

1984-07-17

Perkey, William B.

354274, G03B 310

Patent

active

044602588

ABSTRACT:
A lens barrel includes an imaging optical system for forming an image of an object on a predetermined imaging plane through a diaphragm corresponding to a predetermined aperture value. The lens barrel is mountable to a camera body and capable, when mounted to the camera body, of making the diaphragm respond to the exposure operation of the camera. The lens barrel includes an interlocking member displaceable in response to the exposure operation, means provided in the imaging optical system for stopping down the diaphragm during the exposure operation on the basis of the predetermined aperture value in response to the displacement, and control means for moving the imaging optical system on the basis of the positional relation between the image of the object and the imaging plane and for stopping the movement during the exposure operation in response to the displacement.

REFERENCES:
patent: 3435744 (1969-04-01), Stimson
patent: 4093365 (1978-06-01), Isono
patent: 4184753 (1980-01-01), Hashimoto et al.

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