Transparent, near infrared-shielding glass ceramic

Abstract

Optically transparent glass ceramic materials comprising a glass phase and a crystalline tungsten bronze phase comprising nanoparticles and having the formula MxWO3, 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 Sm2O3, Pr2O3, and Er2 O3 are also provided.

Description

[0001] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 352,602, filed June 21, 2016, and U.S. Provisional Application Serial No. 62 / 351,616, filed June 17, 2016, herein They are taken as a basis and are hereby incorporated by reference in their entirety, respectively. Background technique [0002] The present disclosure relates to glass-ceramic materials. More specifically, the present disclosure relates to optically transparent glass-ceramic materials. Even more specifically, the present disclosure relates to optically transparent glass-ceramic materials having a crystalline tungsten bronze phase. [0003] Near-infrared (NIR) shielding glasses are developed to block and / or eliminate the 700-2500nm wavelength range for applications such as optical filters, lenses, and glazing for medical, defense, aerospace, and consumer applications. [0004] Low-emissivity (low-E) coatings have been developed to minimize the amount of ult...

AI Technical Summary

Problems solved by technology

However, tungsten bronze films typically require expensive vacuum deposition chambers, have limited mechanical robustness, and are susceptible to oxygen, moisture, and UV light, all of which lead to reduced NIR shielding properties and discoloration of these materials, as well as degraded Transparency in the visible range

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