Zoom lens system with vibration reduction function

Details Zoom lens system with vibration reduction function Zoom lens system with vibration reduction function

2007-02-01

2010-02-16

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Image stabilization

By movable refractive structure

C359S690000, C359S554000, C359S676000

Reexamination Certificate

active

07663802

ABSTRACT:
A compact zoom lens system has a zoom ratio of about 3.5 or more, an angle of view of 29° or more in a wide-angle end, and a vibration reduction function. The system includes, in order from an object, a first group having positive power, a second group having negative power, and a third group having positive power. Upon zooming from a wide-angle end to a telephoto end, a distance between the first and second groups increases, and a distance between the second and third groups decreases. The third group consists of, in order from the object, a 31 group having positive power, a 32 group having negative power, and a 33 group. Only the 32 group is moved perpendicularly to an optical axis for correcting image blur due to camera shake.

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