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. 12, 2011
Filed:
Jun. 30, 2009
Toru Nakamura, Kawasaki, JP;
Akiko Miyakawa, Sagamihara, JP;
Toru Nakamura, Kawasaki, JP;
Akiko Miyakawa, Sagamihara, JP;
Nikon Corporation, Tokyo, JP;
Abstract
The optical element of the present invention has a first member and a second member which have been joined in close contact, and has n>nand (n−n)<(n−n), where the first member is formed of a resin having both a benzene ring and a fluorine atom, or the second member is formed of a resin having an alicyclic structure. It also makes use of an optic-purpose resin precursor composition prepared by mixing a first resin precursor having n<1.50 and (n−n)>0.003 in an uncured state and a second resin precursor having n<1.62 and (n−n)>0.010.