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:
Jul. 15, 2014
Filed:
Dec. 27, 2012
Takahiro Nakayama, Yokohama, JP;
Takahiro Nakayama, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming lens including an aperture stop, a first lens group, and a second lens group having a positive power, the first lens group including a first F lens group having a negative power and a first R lens group having a positive power, the first F lens group including at least two negative lenses, the first R lens group including at least one positive lens, the second lens group including a second F lens group having a positive power and a second R lens group, the second F lens group including a first positive lens, a first negative lens, a second negative lens, and a second positive lens, and the second R lens group including at least one lens.