Compact zoom lens with antivibration function

Details Compact zoom lens with antivibration function Compact zoom lens with antivibration function

1997-06-12

1998-06-02

Nguyen, Thong

Optical: systems and elements

Image stabilization

By movable refractive structure

359676, 359692, G02B 2764, G02B 1514

Patent

active

057609586

ABSTRACT:
A zoom lens with antivibration function is provided, in the order from the object side, with a first lens group of a positive refractive power and a second lens group of a negative refractive power, which both axially move toward the object side with a reduction in the gap therebetween in the zooming operation from the wide angle end to the telephoto end. The focusing operation from a larger object distance to a smaller object distance is achieved by an axial movement of the second lens group while the first lens group remains still, while the blur in the taken image resulting from vibration is compensated by a movement of the first lens group in a direction substantially perpendicular to the optical axis.

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patent: 5000549 (1991-03-01), Yamazaki
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patent: 5172276 (1992-12-01), Ueyama et al.
patent: 5227920 (1993-07-01), Shibayama et al.
patent: 5530589 (1996-06-01), Sato

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