A glass composition includes a base glass portion comprising: 65-75 wt % SiO.sub.2; 5-15 wt % CaO; 0-5 wt % MgO; 0-5 wt % K.sub.2O; 10-14 wt % Na.sub.2O; and 1-5 wt % Al.sub.2O.sub.3; wherein the glass composition has a ratio of Na.sub.2O to Al.sub.2O.sub.3 is in the range of 9.5-12.5 wt %/wt %.

A glass composition includes a base glass portion comprising: 65-75 wt % SiO.sub.2; 5-15 wt % CaO; 0-5 wt % MgO; 0-5 wt % K.sub.2O; 10-14 wt % Na.sub.2O; and 1-5 wt % Al.sub.2O.sub.3; wherein the glass composition has a ratio of Na.sub.2O to Al.sub.2O.sub.3 is in the range of 9.5-12.5 wt %/wt %.

A glass sheet contains, as represented by mass percentage based on oxides, SiO.sub.2: 65-75%, Al.sub.2O.sub.3: 0-20%, MgO: 0-5%, CaO: 2-20%, Na.sub.2O: 5-20%, K.sub.2O: 0-10%, total iron in terms of Fe.sub.2O.sub.3 (t-Fe.sub.2O.sub.3): 0.2-1.0%, TiO.sub.2: 0.65-1.5%, and CeO.sub.2: 0.1-2.0%. A ratio of the content of MgO to RO is 0.20 or less, where RO is a total amount of MgO, CaO, SrO and BaO. Fe-redox is from 30 to 57%. The glass sheet has a visible light transmittance Tv_A of 65% or more, a solar transmittance Te of 50% or less, and a dominant wavelength Dw of transmitted light of from 508 to 580 nm, in terms of a 3.9-mm thickness of the glass sheet. A value of A=([t-Fe.sub.2O.sub.3]×Fe-redox)/[TiO.sub.2] is from 20 to 40, where [t-Fe.sub.2O.sub.3] is the content of t-Fe.sub.2O.sub.3 and [TiO.sub.2] is the content of TiO.sub.2.

Provided is an X-ray shielding glass having high shielding capability against X-rays with a tube voltage of 150 kV or less. The X-ray shielding glass has a composition including: 15 mass % to 25 mass % B.sub.2O.sub.3; 7 mass % to 50 mass % La.sub.2O.sub.3; 7 mass % to 50 mass % Gd.sub.2O.sub.3; 10 mass % to 25 mass % WO.sub.3; 0 mass % to 7 mass % SiO.sub.2; 0 mass % to 10 mass % ZrO.sub.2; 0 mass % to 8 mass % Nb.sub.2O.sub.5; 0 mass % to 10 mass % Ta.sub.2O.sub.5; 0 mass % to 5 mass % Bi.sub.2O.sub.3; 0 mass % to 3 mass % CeO.sub.2; and 0 mass % to 1 mass % Sb.sub.2O.sub.3, wherein the glass contains no ZnO, the total content of La.sub.2O.sub.3 and Gd.sub.2O.sub.3 is 45 mass % to 65 mass %, and when the thickness of the glass is 3 mm, the transmittance of the glass to an X-ray from an X-ray tube with a tube voltage of 60 kV is 0.0050% or less, and the transmittance of the glass to an X-ray from an X-ray tube with a tube voltage of 100 kV is 0.1500% or less.

A glass-ceramic includes a silicate-containing glass and crystals within the silicate-containing glass. The crystals include non-stoichiometric tungsten and/or molybdenum sub-oxides, and the crystals are intercalated with dopant cations.

A glass sheet of silicate-type showing intrinsically a very low visible transmission with high IR transmission at wavelengths of interest (i.e., 850, 900 and 950 nm), and low amounts of Cr.sup.6 species, valuable within the context of autonomous cars, and in particular those fully integrating LiDAR systems. The glass sheet having a composition in a content expressed as weight percentages, by total weight of glass:

TABLE-US-00001 Total iron (expressed as Fe.sub.2O.sub.3) 0.04-1.7%, Chromium (expressed as Cr.sub.2O.sub.3) 0.05-0.8%, Cobalt (expressed as Co) 0.03-0.175%,  where:

Cr.sub.2O.sub.3<1−5.5Co, and 0.5<Cr.sub.2O.sub.3/Fe.sub.2O.sub.3≤1.2.

A glass sheet of silicate-type showing intrinsically a very low visible transmission with high IR transmission at wavelengths of interest (i.e., 850, 900 and 950 nm), and low amounts of Cr.sup.6 species, valuable within the context of autonomous cars, and in particular those fully integrating LiDAR systems. The glass sheet having a composition in a content expressed as weight percentages, by total weight of glass:

TABLE-US-00001 Total iron (expressed as Fe.sub.2O.sub.3) 0.04-1.7%, Chromium (expressed as Cr.sub.2O.sub.3) 0.05-0.8%, Cobalt (expressed as Co) 0.03-0.175%,  where:

Cr.sub.2O.sub.3<1−5.5Co, and 0.5<Cr.sub.2O.sub.3/Fe.sub.2O.sub.3≤1.2.

Glasses, glass light guide plates and display products comprising light guide plates are disclosed. Glasses are disclosed having a negative color shift. A light guide plate that includes a glass substrate including an edge surface and two major surfaces defining a thickness and an edge surface configured to receive light from a light source and the glass substrate configured to distribute the light from the light source. Methods of processing glass compositions to form a substrate for use as a light guide plate are also provided.

Glasses, glass light guide plates and display products comprising light guide plates are disclosed. Glasses are disclosed having a negative color shift. A light guide plate that includes a glass substrate including an edge surface and two major surfaces defining a thickness and an edge surface configured to receive light from a light source and the glass substrate configured to distribute the light from the light source. Methods of processing glass compositions to form a substrate for use as a light guide plate are also provided.

Aspects of the disclosure relate to preventing unauthorized screen capture activity. A computing platform may detect, via an infrared sensor associated with a computing device, an infrared signal from a second device attempting an unauthorized image capture of contents being displayed by a display device of the computing device. Subsequently, the computing platform may determine, via the computing platform, the contents being displayed by the display device. Then, the computing platform may retrieve a record of the contents being displayed by the display device. Then, the computing platform may determine a risk level associated with the infrared signal. Subsequently, the computing platform may perform, via the computing platform and based on the risk level, a remediation task to prevent the unauthorized image capture.