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:
Mar. 17, 2015
Filed:
Nov. 28, 2012
Applicants:
Hiromichi Atsuumi, Yokohama, JP;
Yohei Takano, Yokohama, JP;
Inventors:
Hiromichi Atsuumi, Yokohama, JP;
Yohei Takano, Yokohama, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 9/00 (2006.01); G02B 9/60 (2006.01); G02B 13/18 (2006.01);
U.S. Cl.
CPC ...
G02B 15/14 (2013.01); G02B 9/60 (2013.01); G02B 13/18 (2013.01);
Abstract
A zoom lens includes, in order from an object side to an image side along an optical axis, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a negative refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a positive refractive power.