Optical: systems and elements – Lens – With variable magnification
Patent
1989-07-14
1991-08-06
Arnold, Bruce Y.
Optical: systems and elements
Lens
With variable magnification
35419512, 354400, 359705, G02B 1500
Patent
active
050371878
ABSTRACT:
A zoom lens mount assembly in which a zooming cam frame is moved along the optical axis while rotating therearound and respective movable frames supporting an optical system are driven by such rotation and movement of the cam frame to effect a desired zooming. In another aspect there is provided a focussing cam frame adapted to be moved along the optical axis and to drive a movable frame provided with a focussing optical system and a program lens shutter.
REFERENCES:
patent: 4255020 (1981-03-01), Yukio
patent: 4307951 (1981-12-01), Saito et al.
patent: 4466019 (1984-08-01), Sakashita
patent: 4506959 (1985-03-01), Hama
patent: 4548471 (1985-10-01), Schlapp et al.
patent: 4806000 (1989-02-01), Shiokama et al.
patent: 4834514 (1989-05-01), Atsuta et al.
Atsuta Toshikatsu
Kameoka Seiji
Nakao Kanji
Oda Akira
Sakai Nobuhiro
Arnold Bruce Y.
Ben Loha
Kyocera Corporation
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