The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Jul. 27, 2009
Haruo Sato, Kawaguchi, JP;
Takeshi Suzuki, Yokohama, JP;
Satoshi Miwa, Yokohama, JP;
Hiroshi Yamamoto, Kawasaki, JP;
Haruo Sato, Kawaguchi, JP;
Takeshi Suzuki, Yokohama, JP;
Satoshi Miwa, Yokohama, JP;
Hiroshi Yamamoto, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
The present invention relates to a zoom lens which can shift images using a movable optical system so as to have components orthogonal to the optical axis, and can correct hand motion blur, and minimizes the deterioration of performance while attempting higher variable power. This zoom lens has, in order from an object, a first lens group Ghaving positive refractive power, a second lens group Ghaving negative refractive power, a third lens group Ghaving positive refractive power, a fourth lens group Ghaving negative refractive power, and a fifth lens group Ghaving positive refractive power, and at least a part of the fourth lens group Gcan move so as to have components orthogonal to the optical axis, and a distance between each lens group is changed upon zooming from a wide-angle end state to a telephoto end state, and the following conditional expression is satisfied, 0.01<f/ft<0.30, where fdenotes a focal length of the fifth lens group, and ft denotes a focal length of the zoom lens upon focusing on infinity in the telephoto end state.