1987-02-24
1989-09-12
Arnold, Bruce Y.
354400, 350255, G02B 1500, G02B 702
Patent
active
048654329
ABSTRACT:
A built-in motorized lens mounting includes a fixed tube, a zoom actuating ring axially movably supported relative to the fixed tube, a focusing lens holder movably supported at least in the axial direction relative to the zoom actuating ring, an electric motor fixedly secured to the zoom actuating ring, and a driving power transmitting system using the rotation of the motor as a drive source to move the lens holder axially relative to the zoom actuating ring.
REFERENCES:
patent: 3090282 (1963-05-01), Angenieux
patent: 4083057 (1978-04-01), Quinn
patent: 4119364 (1978-10-01), Takahashi
patent: 4256371 (1981-03-01), Someya
patent: 4359276 (1982-11-01), Tomori
patent: 4443085 (1984-04-01), Tomori et al.
patent: 4527879 (1985-07-01), Hosoe et al.
patent: 4824207 (1989-04-01), Kamata et al.
Aoyagi Masao
Kamata Shigeru
Suzuki Ryuji
Yasuda Kei-ichi
Arnold Bruce Y.
Ben Loha
Canon Kabushiki Kaisha
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