Optical apparatus

Details Optical apparatus Optical apparatus

1994-01-28

1998-01-13

Metjahic, Safet

Photography

Having variable focal length of camera objective

Power zoom

396100, 396133, G03B 118

Patent

active

057088705

ABSTRACT:
An optical apparatus comprises a zoom lens for effecting magnification change, a focusing lens for effecting focus adjustment, a first motor for moving the focusing lens, a second motor for moving the zoom lens, and detecting mechanism for detecting the reference positions of the focusing lens and the zoom lens, the detecting mechanism being used in common to the two lenses.

REFERENCES:
patent: 4588276 (1986-05-01), Kaise
patent: 4597657 (1986-07-01), Wakabayashi
patent: 4716432 (1987-12-01), Stephany
patent: 4951075 (1990-08-01), Tokumaru et al.
patent: 4975724 (1990-12-01), Hirasawa et al.
patent: 4994834 (1991-02-01), Watabe et al.
patent: 5027147 (1991-06-01), Kaneda
patent: 5028773 (1991-07-01), Hata

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