Patent
1983-12-29
1984-12-04
Punter, William H.
350257, 35419513, 354286, G02B 708, G03B 310
Patent
active
044860749
ABSTRACT:
On a forward portion or a rearward portion of an interchangeable lens removably mountable to a photographing device such as a camera or the like, a lens barrel is provided so as to be removably mountable to the interchangeable lens and the movement of a movable lens in the lens barrel is controlled by the output signal of an automatic focusing device to thereby obtain a focused image.
REFERENCES:
patent: 2184018 (1939-12-01), Ort
patent: 2853925 (1958-09-01), Lee
patent: 3940777 (1976-02-01), Komine
patent: 3968504 (1976-07-01), Komine
patent: 3990785 (1976-11-01), Hirose
patent: 4323303 (1982-04-01), Enomoto
Canon Kabushiki Kaisha
Punter William H.
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