Optical: systems and elements – Lens – With variable magnification
Patent
1991-07-15
1992-09-08
Ben, Loha
Optical: systems and elements
Lens
With variable magnification
359706, 359826, G02B 1500
Patent
active
RE0340596
ABSTRACT:
A zooming mechanism for a zoom lens comprises a zooming frame disposed for translation back and forth with respect to a stationary member in the direction of an optical axis and carrying a focus lens group in a manner to permit its focus adjustment; a drive for translating the zooming frame in the direction of the optical axis, a carrier frame for carrying another zoom lens group and supported within the zooming frame by a support member located therein for translation back and forth in the direction of the optical axis, a device for deriving a rotational drive in association with the translation of the zooming frame in the direction of the optical axis, and a device responsive to the rotational drive to cause a non-linear movement of the carrier frame. A rotational drive is derived in association with the translation of the zooming frame in the direction of the optical axis, and utilized by said non-linear moving device to cause a non-linear movement of the carrier frame to achieve a zooming operation.
REFERENCES:
patent: 2746350 (1956-05-01), Hopkins
patent: 3251285 (1966-05-01), Uterhart
patent: 3445155 (1969-05-01), Sturrock
patent: 3587431 (1971-06-01), Holler
patent: 3765748 (1973-10-01), Mito
patent: 3765751 (1973-10-01), Noguchi
patent: 3851952 (1974-12-01), Werz et al.
patent: 4078857 (1978-03-01), Kantner et al.
patent: 4203651 (1980-05-01), Persson
patent: 4275952 (1981-06-01), Uesugi
patent: 4318593 (1982-03-01), Tsuji et al.
patent: 4389098 (1983-06-01), Fukushima
patent: 4583827 (1986-04-01), Tokunaga et al.
Ben Loha
Olympus Optical Company Ltd.
Weinstein Louis
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