A glass-ceramic includes SiO.sub.2 from about 50 mol % to about 80 mol %, Al.sub.2O.sub.3 from about 0.3 mol % to about 15 mol %, B.sub.2O.sub.3 from about 5 mol % to about 40 mol %, WO.sub.3 from about 2 mol % to about 15 mol %, and R.sub.2O from about 0 mol % to about 15 mol %, wherein R.sub.2O is one or more of Li.sub.2O, Na.sub.2O, K.sub.2O, Rb.sub.2O and Cs.sub.2O. A difference in the amount of the R.sub.2O and the Al.sub.2O.sub.3 ranges from about ?12 mol % to about 2.5 mol %.

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-ceramic includes glass and crystalline phases, where the crystalline phase includes non-stoichiometric suboxides of titanium, forming bronze-type solid state defect structures in which vacancies are occupied with dopant cations.

A soda-lime-silica glass composition, includes the optical absorbers below in contents varying within the following weight limits: Fe.sub.2O.sub.3 (total iron) 100 to 1600 ppm, Cr.sub.2O.sub.3 20 to 100 ppm, S.sup.2 10 to 50 ppm. The composition has a redox, defined by the molar ratio between the ferrous iron and the total iron, of less than 0.7.

Embodiments relate to a glass composition which can allow for realizing beautiful bluish green colors therein even upon the use of a trace amount of a colorant such as Ti, Co, and Cr, securing high visible light transmittance suitable for window glass, and effectively reducing transmittance of solar heat radiation to help reduce a cooling load in buildings and vehicles.

An article that can include a glass including SiO.sub.2 from 25 mol % to 99 mol %, Al.sub.2O.sub.3 from 0 mol % to 50 mol %, WO.sub.3 plus MoO.sub.3 from 0.35 mol % to 30 mol %, and R.sub.2O from 0.1 mol % to 50 mol %. R.sub.2O is one or more of Li.sub.2O, Na.sub.2O, K.sub.2O, Rb.sub.2O and Cs.sub.2O. R.sub.2O minus Al.sub.2O.sub.3 is from 35 mol % to 7 mol %. The glass includes at least one of: (i) RO from 0.02 mol % to 50 mol % and (ii) SnO.sub.2 is from 0.01 mol % to 5 mol %. RO is one or more of MgO, CaO, SrO, BaO and ZnO. The article can also include a glass-ceramic with at least one and one crystalline phase comprising an oxide, from 0.1 mol % to 100 mol % of the crystalline phase, of at least one of: (i) W, (ii) Mo, (iii) V and an alkali metal cation, and (iv) Ti and an alkali metal cation.

Disclosed herein are sealed devices comprising a first substrate, a second substrate, an inorganic film between the first and second substrates, and at least one bond between the first and second substrates. The inorganic film can comprise about 10-80 mol % B.sub.2O.sub.3, about 5-60 mol % Bi.sub.2O.sub.3, and about 0-70 mol % ZnO. Methods for sealing devices using such an inorganic film are also disclosed herein, as well as display and electronic components comprising such sealed devices.

The invention provides an optical glass having excellent precision molding performance and having a refractive index of 1.46-1.53 and an Abbe number of 77-84. The optical glass comprises the following components based on cations in the molar percentage: P.sup.5+: 10-35%, Al.sup.3+: 10-35%, Ba.sup.2+: 1-20%, Sr.sup.2+: 10-35%, Ca.sup.2+: 1-20%, Gd.sup.3+: 0-10%, and Na.sup.+: 0-10%; the ratio of Sr.sup.2+/(Gd.sup.3++Na.sup.+) being 1-30; anions comprising F.sup. and O.sup.2, wherein the ratio F.sup./P.sup.5+ of F.sup. content relative to the total molar percentage of anions to P.sup.5+ content relative to the total molar percentage of cations is 2.5 or more. The invention by rationally adjusting the proportions of the components, the molding performance of the optical glass is improved, and the problem that glass is broken and forms fogs during the molding process is solved, thereby the yield in manufacturing optical elements is improved.

UV- and IR-absorbing materials with brown tint for sunglasses are described. The sunglass materials are prepared from a base glass through a post-fabrication process that includes ion exchange with silver. The tint of the sunglass material can be adjusted by controlling the level of ion exchange of the base glass with silver by varying the conditions of ion exchange. A wide range of tint is possible, including multiple shades of brown tint. In a typical process, a base glass having strong absorption in the UV and IR is fabricated and the resulting glass is subjected to a post-fabrication silver ion exchange process to control tint. The post-fabrication silver ion exchange process permits control of tint while maintaining strong UV and IR absorption and adequate transmittance in the visible.

A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu.sup.2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.