Camera

Details Camera Camera

1981-05-07

1983-05-24

Gellner, Michael L.

G03B 310

Patent

active

043847722

ABSTRACT:
A manual focusing camera provided with a focus detection means adapted to generate an output signal when the image of an object is sharply focused and a locking or arresting means responsive to the output signal from the focus detection means for pressing against the rear end face of the focusing ring of a photographic lens attached on the camera, thereby locking or arresting the further rotation of the focusing ring. Therefore, one can sense when the image is sharply focused. The focus detection means and locking or arresting means are very simple in construction and can be easily incorporated into the conventional cameras. Thus, positive and sharp focusing can be ensured.

REFERENCES:
patent: 4239357 (1980-12-01), Iida

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