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:
Apr. 20, 2010
Filed:
Oct. 17, 2007
Applicants:
Yasuhiro Omura, Kumagaya, JP;
Hironori Ikezawa, Fukaya, JP;
David M. Williamson, West Malvern, GB;
Inventors:
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 plurality of lenses disposed along a light beam path of the immersion optical system. The plurality of lenses include a liquid immerged lens which is contactable with a liquid layer. An optically conjugate point of an object surface is formed in the light beam path of the immersion optical system. The object surface is contactable with a liquid.