Adapter device

Details Adapter device Adapter device

1992-12-31

1994-07-05

Gray, David M.

35428911, G03B 1100, G03B 1700

Patent

active

053271882

ABSTRACT:
An adapter device is adapted to a camera lens, including a stationary ring and a focus ring rotatably attached to the stationary ring. The adapter device is provided with a first ring which is arranged to be fixed to the stationary ring of the camera lens. A second ring is rotatably attached to the first ring and is arranged to be fixed to the focus ring of the camera lens. A click stop mechanism is provided between the first ring and second ring, for click-stopping the second ring at a prescribed angular position. The click stop mechanism includes a plurality of click grooves formed on the inner peripheral surface of the second ring, a click member provided to the outer peripheral surface of the first ring, which is capable of fitting into the click groove, and a leaf spring for urging the click member into the click groove.

REFERENCES:
patent: 3335648 (1967-08-01), Aster
patent: 4314749 (1982-02-01), Komoto
patent: 4327984 (1982-05-01), Evans
patent: 4942414 (1990-07-01), Takahashi et al.
patent: 5040011 (1991-08-01), Tiffen
patent: 5097280 (1992-03-01), Nomura

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