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. 21, 2017
Filed:
May. 01, 2012
Applicants:
Jun Akedo, Ibaraki, JP;
Hiroki Tsuda, Ibaraki, JP;
Keishi Ohashi, Tokyo, JP;
Shoji Sekino, Tokyo, JP;
Shin Nakamura, Tokyo, JP;
Inventors:
Jun Akedo, Ibaraki, JP;
Hiroki Tsuda, Ibaraki, JP;
Keishi Ohashi, Tokyo, JP;
Shoji Sekino, Tokyo, JP;
Shin Nakamura, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 1/02 (2006.01); G02B 1/10 (2015.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
G02B 1/105 (2013.01); G02B 5/208 (2013.01);
Abstract
An infrared-transmitting film which is excellent in mechanical strength and environmental resistance. The infrared-transmitting film comprises a buffer layer formed on a surface of an infrared optical substrate and having a Vickers hardness greater than that of the substrate and an environmental resistance improving layer provided in contact with the buffer layer and having a Vickers hardness greater than that of the buffer layer.