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:
Jun. 23, 2009
Filed:
Oct. 16, 2007
Applicants:
Yasuhiro Omura, Kumagaya, JP;
Hironori Ikezawa, Fukaya, JP;
Inventors:
Yasuhiro Omura, Kumagaya, JP;
Hironori Ikezawa, Fukaya, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/00 (2006.01); G02B 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An immersion optical system includes a liquid immerged optical element having an optical surface which is contactable with a liquid, a convex surface, and an optical axis. A side surface of the liquid immerged optical element is inclined with respect to the optical axis.