	US 12,421,161 B2
	Infrared-transmitting glass
Yoshimasa Matsushita, Otsu (JP); and Fumio Sato, Otsu (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Appl. No. 17/430,420
Filed by NIPPON ELECTRIC GLASS CO., LTD., Otsu (JP)
PCT Filed Feb. 21, 2020, PCT No. PCT/JP2020/007217 § 371(c)(1), (2) Date Aug. 12, 2021, PCT Pub. No. WO2020/175402, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-035816 (JP), filed on Feb. 28, 2019.
Prior Publication US 2022/0127185 A1, Apr. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 4/10 (2006.01); C03C 3/253 (2006.01); C03C 3/32 (2006.01); G02B 5/20 (2006.01)

CPC C03C 4/10 (2013.01) [C03C 3/253 (2013.01); G02B 5/208 (2013.01)]

3 Claims

1. An infrared-transmitting glass containing, in terms of % by mole, over 0 to 5% Ge, 18 to 50% Ga, 50 to 90% Te, 0 to 40% Si+Al+Ti+Cu+In+Sn+Bi+Cr+Sb+Zn+Mn+Cs+Ag+As+Pb, and 0 to 40% F+Cl+Br+I, wherein the infrared-transmitting glass contains Ag and/or Sn, and the infrared-transmitting glass is substantially free of S and Se.