Zoom lens and a camera providing the same

Details Zoom lens and a camera providing the same Zoom lens and a camera providing the same

2006-12-19

2006-12-19

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C348S240300

Reexamination Certificate

active

07151637

ABSTRACT:
A zoom lens system comprises, in order from an object side, positive, negative, positive, negative, and positive refractive power lens groups, and while changing the magnification, the distance between the first lens group and the second lens group increases, the distance between the second lens group and the third lens group decreases, the distance between the third lens group and the fifth lens group increases, and the second lens group moves more towards the object side at the telephoto end than the wide-angle end.

REFERENCES:
patent: 6404561 (2002-06-01), Isono et al.
patent: 6449433 (2002-09-01), Hagimori et al.
patent: 2003/0165020 (2003-09-01), Satori et al.

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