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:
Oct. 24, 2006
Filed:
Jul. 16, 2004
Applicant:
Takayuki Sensui, Tokyo, JP;
Inventor:
Takayuki Sensui, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A super-wide zoom lens system having sufficient zoom ratio and a high speed, capable of obtaining high optical performance. The system includes at least, in order from an object, a first lens group Ghaving negative refractive power, and a second lens group Ghaving positive refractive power. When zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group Gand the second lens group Gvaries. The first lens group Gincludes at least one negative lens element and a glass material constructing at least one negative lens element (SL) in the first group Gsatisfies given conditions.