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. 04, 2006
Filed:
Jul. 24, 2000
Akiko Miyakawa, Sagamihara, JP;
Toru Nakamura, Kawasaki, JP;
Masahito Suzuki, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
This invention provides a resin-cemented optical element comprising a base member and a resin layer formed on the surface of the base member and comprising a cured product of a photosensitive resin composition, and the resin layer has (1) a refractive index of 1.55 or more, (2) a visible-light inner transmittance of 95% or more in a 100 μm thick area, (3) a rate of hygroscopic dimensional change of 0.4% or less, (4) a durometer hardness of HDD 70 or more, (5) a gel percentage of 95% or more, (6) a glass transition temperature of 95° C. or above or (7) a rate of shrinkage on curing of 7% or less; and a production process for the element and an optical article having the element.