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:
Nov. 20, 2018
Filed:
Aug. 01, 2017
Applicant:
Takuya Nagano, Kanagawa, JP;
Inventor:
Takuya Nagano, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 13/18 (2006.01); G02B 9/62 (2006.01); B60R 1/00 (2006.01); G02B 13/00 (2006.01); H04N 5/374 (2011.01);
U.S. Cl.
CPC ...
B60R 1/00 (2013.01); G02B 9/62 (2013.01); G02B 13/0045 (2013.01); H04N 5/374 (2013.01); B60R 2300/10 (2013.01); B60R 2300/30 (2013.01);
Abstract
An imaging lens includes a first lens group having a negative refractive power, an aperture stop, and a second lens group having a positive refractive power. The first lens group, the aperture stop, and the second lens group are sequentially disposed in a direction from an object side to an image side. The first lens group includes a negative first lens and a negative second lens. The second lens group includes a positive third lens, a positive fourth lens, a negative fifth lens, and a positive sixth lens. Conditional formula (1) below is satisfied:0.16<3/<0.32  (1)