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.:

US 9019616 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 28, 2015

Filed:

Jun. 20, 2011
Applicants:

Hiroyuki Tanaka, Kawasaki, JP;

Motokazu Kobayashi, Yokohama, JP;

Inventors:

Hiroyuki Tanaka, Kawasaki, JP;

Motokazu Kobayashi, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/00 (2006.01); C03C 17/00 (2006.01); C03C 17/34 (2006.01);
U.S. Cl.
CPC ...
G02B 1/115 (2013.01); C03C 17/007 (2013.01); C03C 17/3452 (2013.01); C03C 2217/425 (2013.01); C03C 2218/11 (2013.01); G02B 1/113 (2013.01);
Abstract

An optical film includes a fluoride layer made of a fluoride containing at least Li element and at least one kind of element selected from Mg and Al. A method for manufacturing an optical film includes allowing at least Li metal, a metal acetate or a metal alkoxide of at least one kind of metal selected from Mg and Al, and trifluoroacetic acid to react in a solvent to obtain a fluorine-containing precursor containing a metal fluorocarboxylate, and, after coating the fluorine-containing precursor on a base material, heating the fluorine-containing precursor to form a fluoride layer made of a fluoride containing at least Li element and at least one kind of element selected from Mg and Al.


Find Patent Forward Citations

Tanaka, Hiroyuki. (2015). Optical film, optical element, manufacturing method thereof, and photographic optical system (U.S. Patent No. 9019616). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9019616

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