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:
Nov. 26, 1996
Filed:
Apr. 24, 1995
Applicant:
Inventors:
Makoto Kameyama, Funabashi, JP;
Noboru Sugahara, Sagamihara, JP;
Mitsuharu Sawamura, Yokohama, JP;
Junji Terada, Hiratsuka, JP;
Junichi Sakamoto, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501103 ; 501104 ;
Abstract
An evaporation material is employed to form an optical thin film which is adapted to be formed on an optical element such as a lens or the like. The evaporation material is provided such that zirconium oxide (ZrO.sub.2) is mixed with a titanium oxide (TiO.sub.A) having a molar ratio A(O/Ti) of oxygen to titanium in a range of 1.0 to 1.75 so that the mixture assumes a molar ratio (Ti/Zr) of titanium to zirconium in a range of 1.0 to 4.0. The mixture is sintered or fused and solidified.