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:
Jan. 07, 2014
Filed:
May. 12, 2009
Takeshi Suzuki, Yokohama, JP;
Haruo Sato, Kawaguchi, JP;
Takeshi Suzuki, Yokohama, JP;
Haruo Sato, Kawaguchi, JP;
Nikon Corporation, Tokyo, JP;
Abstract
The zoom lens is configured having, in order from an object, a first lens group (G) having positive refractive power, a second lens group (G) having negative refractive power, a third lens group (G) having positive refractive power, and a fourth lens group (G) having positive refractive power. The distance between each lens group is changed upon zooming from a wide-angle end state to a telephoto end state, the third lens group (G) has, in order from the object, a thirty first lens group (G) having positive refractive power (positive lens group), and a thirty second lens group (G) having negative refractive power (negative lens group), the thirty second lens group (G) is moved so as to have components orthogonal to the optical axis, and the condition of the expression 2.6<|X|/fw<8.0 is satisfied, where Xdenotes a moving distance of the first lens group (G) upon zooming from the wide-angle end state to the telephoto end state, and fw denotes a focal length of the zoom lens in the wide-angle end state.