Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2007-07-18
2009-02-17
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S034000, C359S685000, C359S686000, C359S687000, C359S715000, C359S740000, C359S774000
Reexamination Certificate
active
07492524
ABSTRACT:
Providing a zoom lens system with a vibration reduction function, a high zoom ratio, and a wide angle of view, an imaging apparatus, a method for vibration reduction, and a method for varying a focal length. The system includes, in order from an object, a first lens group having positive power, a second lens group having negative power, a third lens group having positive power, and a fourth lens group having positive power. Upon zooming from a wide-angle end to a telephoto end, a distance between the first and the second lens groups increases, a distance between the second and the third lens groups decreases, and a distance between the third and the fourth lens groups varies. The third lens group consists of a front group and a rear group. Vibration reduction is carried out by moving only the rear group perpendicularly to the optical axis. Given conditions are satisfied.
REFERENCES:
patent: 6025962 (2000-02-01), Suzuki
patent: 6462885 (2002-10-01), Nishio
patent: 7253965 (2007-08-01), Shibayama et al.
patent: 7277235 (2007-10-01), Sensui
patent: 7336425 (2008-02-01), Obama et al.
patent: 2005/0083584 (2005-04-01), Ito et al.
patent: 2005/0088756 (2005-04-01), Yamada
patent: 2006/0215278 (2006-09-01), Ori
patent: 1 643 293 (2006-04-01), None
patent: 2001-166208 (2001-06-01), None
patent: 2002-006217 (2002-01-01), None
patent: 2003-140048 (2003-05-01), None
patent: 2003-295060 (2003-10-01), None
Lester Evelyn A.
Miles & Stockbridge P.C.
Nikon Corporation
LandOfFree
Zoom lens system, imaging apparatus, method for vibration... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Zoom lens system, imaging apparatus, method for vibration..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens system, imaging apparatus, method for vibration... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4078295