Zoom lens and image-pickup apparatus having the same

Details Zoom lens and image-pickup apparatus having the same Zoom lens and image-pickup apparatus having the same

2008-03-18

2008-10-28

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S689000

Reexamination Certificate

active

07443604

ABSTRACT:
At least one exemplary embodiment is directed to a zoom lens which includes first to fourth lens groups, each moving and having negative, positive, negative, and positive refractive power, arranged from an object to an image in that order. The second lens group includes a second A lens component composed of a single positive lens, and a second B lens component composed of a negative lens and a positive lens with positive refractive power as a whole, arranged from the object to the image in that order. The second A lens component displaces images in a direction substantially perpendicular to an optical axis by having a component of it's displacement perpendicular to the optical axis, and the zoom lens satisfies the following condition: 0.2<f2/f2A<0.6,where f2A and f2 are focal lengths of the second A lens component and the second lens group, respectively.

REFERENCES:
patent: 5559635 (1996-09-01), Sato
patent: 5774267 (1998-06-01), Kodama et al.
patent: 5847875 (1998-12-01), Kodama et al.
patent: 5969881 (1999-10-01), Konno
patent: 7075730 (2006-07-01), Nishimura
patent: 7215487 (2007-05-01), Ori
patent: 07-064025 (1995-03-01), None
patent: 09-113808 (1997-05-01), None
patent: 10-161024 (1998-06-01), None
patent: 2004-061910 (2004-02-01), None

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