Transparent, near infrared-shielding glass ceramic

Patent metadata

Field	Value
Publication number	US-11214511-B2
Application number	US-201916559806-A
Country	US
Kind code	B2
Filing date	Sep 4, 2019
Priority date	Jun 17, 2016
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

Optically transparent glass ceramic materials comprising a glass phase containing and a crystalline tungsten bronze phase comprising nanoparticles and having the formula M x WO 3 , where M includes at least one H, Li, Na, K, Rb, Cs, Ca, Sr, Ba, Zn, Cu, Ag, Sn, Cd, In, Tl, Pb, Bi, Th, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and U, and where 0<x<1. Aluminosilicate and zinc-bismuth-borate glasses comprising at least one of Sm 2 O 3 , Pr 2 O 3 , and Er 2 O 3 are also provided.

First claim

The invention claimed is:

1. A zinc-bismuth-borate glass comprising
from about 20 mol % to about 30 mol % ZnO,
from about 4 mol % to about 20 mol % Bi 2 O 3 ,
from about 40 mol % to about 50 mol % B 2 O 3 , and
at least one of Sm 2 O 3 , Pr 2 O 3 , and Er 2 O 3 ,
wherein Sm 2 O 3 +Pr 2 O 3 +Er 2 O 3 ≤10 mol %.

2. The zinc-bismuth-borate glass of claim 1 , wherein the zinc-bismuth-borate glass has less than 30% transmission at a wavelength between 1400 nm and 1600 nm.

Assignees

• Corning Inc

Inventors

• Dejneka Matthew John
• Kohl Jesse
• Patil Mallanagouda Dyamanagouda

Classifications

• C03C10/0009 Primary

  containing silica as main constituent · CPC title

• C03C4/085

  for ultraviolet absorbing glass · CPC title

• C03C4/082

  for infrared absorbing glass · CPC title

• C03C3/091 Primary

  containing aluminium · CPC title

• C03C21/002

  to perform ion-exchange between alkali ions (C03C21/005 takes precedence) · CPC title