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. 27, 2018
Filed:
Aug. 29, 2016
Applicant:
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Inventors:
Makoto Shiratori, Haibara-gun, JP;
Takeshi Yamaguchi, Haibara-gun, JP;
Assignee:
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/247 (2006.01); G02B 5/20 (2006.01); C03C 4/08 (2006.01); G02B 5/22 (2006.01);
U.S. Cl.
CPC ...
C03C 3/247 (2013.01); C03C 4/082 (2013.01); G02B 5/208 (2013.01); G02B 5/226 (2013.01); C03C 2204/00 (2013.01);
Abstract
To provide a near infrared cutoff filter glass which is excellent in optical properties such that the transmittance of visible light is high, and the transmittance of near infrared light is low. A near infrared cutoff filter glass comprising components of P, F, Al, R (R is at least one member selected from Li, Na and K), R' (R′ is at least one member selected from Mg, Ca, Sr, Ba and Zn) and Cu, wherein (Cu/the total amount of Cu)×100[%] is within a range of from 0.01 to 4.0%.