Device for confirming the depth of focus of a camera

Details Device for confirming the depth of focus of a camera Device for confirming the depth of focus of a camera

1978-09-27

1980-03-25

Gellner, Michael L.

354 46, 354271, 354272, G03B 708, G03B 902

Patent

active

041948190

ABSTRACT:
The present invention relates to a camera so designed that the aperture preset mechanism as well as the aperture adjusting mechanism at the side of the camera body are operative by means of the first urging mechanism provided in the lens barrel. The aperture adjusting mechanism is operated by means of the release operation of the camera so as to close the aperture preset mechanism down to a certain determined aperture value. Between the aperture adjusting mechanism and the aperture preset mechanism an intermediary member and the second urging mechanism are provided. By means of operating the focus depth confirmation member, the aperture preset mechanism is closed down to a certain determined aperture value through the intermediary member. The camera is brought into the state ready for taking a picture by means of the second urging mechanism upon releasing the focus depth confirmation operation.

REFERENCES:
patent: 3900856 (1975-08-01), Taguchi et al.
patent: 3906517 (1975-09-01), Nomura et al.
patent: 3988748 (1976-10-01), Iura et al.
patent: 4015198 (1977-03-01), Iwashita et al.

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