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. 01, 2011
Filed:
Sep. 11, 2006
Shinichi Mihara, Tama, JP;
Kanato Adachi, Kawasaki, JP;
Keisuke Ichikawa, Hachioji, JP;
Yasunobu Iga, Hachioji, JP;
Koji Matsumoto, Hachioji, JP;
Kazuaki Murayama, Hachioji, JP;
Keigo Matsuo, Hachioji, JP;
Hideki Nagata, Hachioji, JP;
Shinichi Mihara, Tama, JP;
Kanato Adachi, Kawasaki, JP;
Keisuke Ichikawa, Hachioji, JP;
Yasunobu Iga, Hachioji, JP;
Koji Matsumoto, Hachioji, JP;
Kazuaki Murayama, Hachioji, JP;
Keigo Matsuo, Hachioji, JP;
Hideki Nagata, Hachioji, JP;
Olympus Corporation, Tokyo, JP;
Abstract
An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an object side of the aperture stop, Here, Nd denotes a refractive index, and νd denotes an Abbe's number.