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:
Apr. 09, 2019
Filed:
Oct. 17, 2017
Agc Inc., Chiyoda-ku, JP;
Takahiro Sakagami, Haibara-gun, JP;
Takeshi Yamaguchi, Haibara-gun, JP;
Makoto Shiratori, Haibara-gun, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
A near-infrared cut filter glass includes: P, Al, R (R represents any one or more of Li, Na, and K), R' (R′ represents any one or more of Mg, Ca, Sr, Ba, and Zn), and Cu, and not including F practically, wherein (Cuamount/total Cu amount)×100[%] is 0.01 to 7.0%. The filter glass may further include, by mol %, 0 to 10% BO. The filter glass may have a fracture toughness value of the near-infrared cut filter glass is 0.3 MPa·mor more. For the filter glass, a quotient obtained by dividing an absorption constant at a wavelength of 430 nm by an absorption constant at a wavelength of 800 nm, of the near-infrared cut filter glass, may be 0.00001 to 0.19.