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:
Mar. 23, 1999
Filed:
Mar. 21, 1997
Applicant:
Inventors:
Minoru Otani, Tokyo, JP;
Kenji Ando, Kawasaki, JP;
Yasuyuki Suzuki, Yokohama, JP;
Ryuji Biro, Kawasaki, JP;
Hidehiro Kanazawa, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428426 ; 428688 ; 428689 ; 428702 ; 423625 ;
Abstract
An anti-reflection film is arranged by alternately stacking a plurality of high-refractive index layers containing Al.sub.2 O.sub.3 and a plurality of low-refractive index layers containing SiO.sub.2 on a transparent substrate in turn from the substrate side to the air side, and satisfies: