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:
May. 31, 2022
Filed:
Mar. 16, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/115 (2015.01); C03C 17/34 (2006.01); C23C 14/06 (2006.01); C23C 14/08 (2006.01);
U.S. Cl.
CPC ...
G02B 1/115 (2013.01); C03C 17/3452 (2013.01); C03C 2217/228 (2013.01); C03C 2217/285 (2013.01); C03C 2217/73 (2013.01); C03C 2218/156 (2013.01); C23C 14/0694 (2013.01); C23C 14/08 (2013.01);
Abstract
An optical thin film provided on a base substrate, includes a layer whose main component is ytterbium oxide, and a layer whose main component is magnesium fluoride. The layer whose main component is magnesium fluoride disposed on the layer whose main component is ytterbium oxide. The layer whose main component is magnesium fluoride is positioned opposite from the base substrate with respect to the layer whose main component is ytterbium oxide.