Gradient tinted articles and methods of making the same

Patent metadata

Field	Value
Publication number	US-11254603-B2
Application number	US-202016778867-A
Country	US
Kind code	B2
Filing date	Jan 31, 2020
Priority date	Feb 12, 2019
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A glass-ceramic, includes a silicate-containing glass comprising a first portion and a second portion. A plurality of crystalline precipitates comprising at least one of W and Mo. The crystalline precipitates are distributed within at least one of the first and second portions of the silicate-containing glass. The glass-ceramic comprises a difference in absorbance between the first and second portions of 0.04 optical density (OD)/mm or greater over a wavelength range of from 400 nm to 1500 nm.

First claim

What is claimed is:

1. A glass-ceramic, comprising:
a silicate-containing glass comprising a first portion and a second portion; and
a plurality of crystalline precipitates comprising at least one of W and Mo, wherein the crystalline precipitates are distributed within at least one of the first and second portions of the silicate-containing glass, wherein the glass-ceramic comprises a difference in absorbance between the first and second portions of 0.04 optical density (OD)/mm or greater over a wavelength range of from 400 nm to 1500 nm.

2. The glass-ceramic of claim 1 , wherein the plurality of crystalline precipitates comprise an oxide of the chemical form of one or more of M x WO 3 and M x MoO 3 , wherein M is one or more of H, Li, Na, K, Rb, Cs, Ca, Sr, Ba, Zn, Ag, Au, Cu, Sn, Cd, In, Tl, Pb, Bi, Th, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and U, and 0<x<1.

3. The glass-ceramic of claim 1 , further comprising:
one or more of WO 3 and MoO 3 from 0 mol % to 15 mol % in total.

4. The glass-ceramic of claim 1 , further comprising:
at least one of: (i) Au from 0.001 mol % to 0.5 mol %, (ii) Ag from 0.025 mol % to 1.5 mol %, and (iii) Cu from 0.03 mol % to 1 mol %.

5. The glass-ceramic of claim 1 , further comprising:
at least one of: (i) Au from 0.001 mol % to 0.5 mol %, (ii) Ag from 0.1 mol % to 1 mol %, and (iii) Cu from 0.03 mol % to 1 mol %.

6. The glass-ceramic of claim 1 , wherein the plurality of crystalline precipitates comprises non-stoichiometric tungsten suboxides, and further wherein the plurality of crystalline precipitates is intercalated with dopant cations selected from the group of transition metals consisting of Ag, Au and Cu.

7. The glass-ceramic of claim 1 , wherein a Contrast Ratio between the first portion and the second portion is from 1.4 to 165 over a wavelength range of from 400 nm to 700 nm.

8. The glass-ceramic of claim 1 , wherein a Contrast Ratio between the first portion and the second portion is from 1.5 to 14 over a wavelength range of from 750 nm to 1500 nm.

9. The glass-ceramic of claim 1 , wherein the difference in absorbance between the first and second portions is from 0.04 OD/mm to 49 OD/mm over a wavelength range of from 400 nm to 750 nm.

10. The glass-ceramic of claim 1 , further comprising:
V 2 O 5 from 0.0001 mol % to 0.5 mol %.

11. The glass-ceramic of claim 1 , wherein the plurality of crystalline precipitates comprises at least W.

12. The glass-ceramic of claim 1 , wherein the plurality of crystalline precipitates comprises at least W and Mo.

Assignees

• Corning Inc

Inventors

• Dejneka Matthew John
• Kohl Jesse

Classifications

• C03C10/0009 Primary

  containing silica as main constituent · CPC title

• C03C4/082

  for infrared absorbing glass · CPC title

• C03C3/091 Primary

  containing aluminium · CPC title

• C03C3/118

  containing aluminium · CPC title

• C03C2204/00

  Glasses, glazes or enamels with special properties · CPC title