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. 02, 2013
Filed:
Mar. 16, 2009
Tsutomu Sasamoto, Hino, JP;
Tsutomu Sasamoto, Hino, JP;
Olympus Medical Systems Corp., Tokyo, JP;
Abstract
An objective lens for an endoscope includes, in order from an object side, a front lens group having negative refractive power as a whole, a brightness aperture stop, and a rear lens group having positive refractive power as a whole. The front lens group includes, in order from the object side, a first lens group having negative refractive power and that may include only a single lens; and a second lens group that may include only a single lens, with the second lens group having a lens surface closest to the image side that is of a concave form directed toward the image side, the second lens group having positive refractive power as a whole;