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:
Feb. 17, 2004
Filed:
Feb. 21, 2003
Applicant:
Inventors:
Takeshi Mitsuishi, Tokyo, JP;
Kenichi Shinde, Tokyo, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/10 ; G02B 1/11 ;
U.S. Cl.
CPC ...
G02B 1/10 ; G02B 1/11 ;
Abstract
An optical element having a plastic substrate and an antireflection film provided on the plastic substrate, characterized in that the optical element has a basic layer comprising Nb between the plastic substrate and the antireflection film. The optical element has high adhesiveness between the plastic substrate and the antireflection film and is characterized by excellent resistance to heat, impact, alkali, and abrasion.