Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2008-05-06
2009-10-06
Martinez, Joseph (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S774000, C359S726000, C359S740000
Reexamination Certificate
active
07599125
ABSTRACT:
An image pickup apparatus having a wide angle zoom lens system includes a zoom lens system, and an image pickup element which is disposed at an image side of the zoom lens system. The zoom lens system includes in order from an object side thereof, a first lens unit G1having a positive refracting power, a second lens unit G2having a negative refracting power, a third lens unit G3having a positive refracting power, a fourth lens unit G4having a positive refracting power, and an aperture stop S which is disposed between the second lens unit G2and the third lens unit G3. A zooming is carried out from a wide angle end to a telephoto end by fixing a position of the first lens unit, and changing a distance between the lens units by moving at least the second lens unit G2and the third lens unit G3, and the following conditional expressions are satisfied.in-line-formulae description="In-line Formulae" end="lead"?33°<tan−1(IHw/fw) (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?3<f1g/fw<5 (2).in-line-formulae description="In-line Formulae" end="tail"?
REFERENCES:
patent: 6771432 (2004-08-01), Mihara
patent: 6850373 (2005-02-01), Mihara et al.
patent: 6975462 (2005-12-01), Mihara
patent: 7145730 (2006-12-01), Mihara
patent: 7248293 (2007-07-01), Iwasawa
patent: 7372635 (2008-05-01), Morooka et al.
patent: 2003/0193722 (2003-10-01), Mihara
patent: 2004/0027685 (2004-02-01), Mihara et al.
patent: 2004/0105020 (2004-06-01), Iwasawa
patent: 2004/0233302 (2004-11-01), Kojima
patent: 2005/0002115 (2005-01-01), Mihara
patent: 2006/0044423 (2006-03-01), Hagimori et al.
patent: 2006/0268427 (2006-11-01), Mihara
patent: 2006/0279853 (2006-12-01), Morooka et al.
patent: 2000-131610 (2000-05-01), None
patent: 2003-302576 (2003-10-01), None
patent: 2004-069808 (2004-03-01), None
patent: 2004-184627 (2004-07-01), None
patent: 2004-347712 (2004-12-01), None
patent: 2006-058363 (2006-03-01), None
patent: 2006-343622 (2006-12-01), None
Katakura Masahiro
Morooka Masaru
Nagaoka Hideyuki
Shirota Eiji
Kenyon & Kenyon LLP
Martinez Joseph
Olympus Imaging Corp.
LandOfFree
Image pickup apparatus having wide angle zoom lens system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image pickup apparatus having wide angle zoom lens system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image pickup apparatus having wide angle zoom lens system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4079513