Abstract: A laminated glass having a low haze ratio and an excellent infrared rays shield performance and a glass composition suitable for use in a laminated glass and easy with respect to melting and molding works, which is a glass composition comprising 65 to 74% of SiO2, 0 to 5% of B2O3, 1.9 to 2.5% of Al2O3, 1.0 to 3.0% of MgO, 5 to 10% of CaO, 0 to 10% of SrO, 0 to 10% of BaO, 0 to 5% of Li2O, 13 to 17% of Na2O, 0.5 to 5% of K2O, 0 to 0.40% of TiO2 and 0.3 to 2.0% of total iron oxide in terms of Fe2O3, on a weight basis, in which the sum of MgO, CaO, SrO and BaO is from 10 to 15% and the sum of Li2O, Na2O and K2O is from 14 to 20%, wherein the glass composition has a visible light transmittance of 80% or more as measured with the CIE Standard illuminant A and a total solar energy transmittance of not more than 62% at a thickness of 2.1 mm, and a laminated glass using a glass sheet made of that glass composition.

Abstract: The present invention comprises a top plate 31 for placing a cylindrical phantom 100, an X-ray tube 22 that generates X-rays, an X-ray detector 23 that detects X-rays transmitted through the phantom 100 placed on a top plate 31, a supporting body drive part 25 that rotates the X-ray tube 22 and X-ray detector 23, a tomographic image data generating part 60 that generates tomographic image data on the phantom 100 based on a results of detecting X-rays by the X-ray detector 23, a calculation processing part 80 that calculates displacement of the cylinder axis J of the phantom 100 relative to the center of rotation (center of scan) by the supporting body drive part 25, based on the tomographic image data, and the angle of gradient of the cylinder axis J relative to the normal direction (direction of slice) of the rotation plane of said rotation, and a monitor 5 that displays the calculated results.

Abstract: The present invention provides a glass sheet having both temperability and shapability. This glass sheet has a soda-lime silica composition including 13.5 wt % to 16.0 wt % of Na2O. When the glass sheet is heated and then is quenched rapidly to become a tempered glass, the tempered glass satisfies a formula of T2?T1?5, where T1 denotes a minimum heat-treatment temperature that is required for obtaining a tempered glass with a minimum number of fragments of at least 50, which is determined based on the method of fragmentation test for uniformly tempered glass according to ECE R43, while T2 denotes a maximum heat-treatment temperature that allows a tempered glass to be obtained, with the tempered glass permitting an angle of 25° or smaller to be formed between the normal orientation of a screen surface and the orientation of the surface of a glass sheet having a maximum optical distortion of not higher than 2.

Abstract: Abstract of the Disclosure To provide an ultraviolet and infrared ray absorbing green glass suitable as a window glass for automobiles, which does not substantially contain an expensive raw material whose recycling is difficult, can exhibit an optimum ultraviolet and infrared ray absorption when used in a thin plate having a thickness of not more than 3.5 mm, and has a low excitation purity, the ultraviolet and infrared ray absorbing colored glass plate having: a soda-lime silicate glass formulation substantially free from CeO2; and a thickness (t mm) of from 1.0 to 3.5 mm; containing 0.96 to 1.25 %, in terms of Fe2O3, of total iron oxide (T-Fe2O3) and 0.0001 to 0.005 % of CoO, as coloring components, with FeO/T-Fe2O3 falling within the range represented by the relational equation with respect to the thickness and falling within the range represented by the relational equation with respect to the content of T-Fe2O3; and when the glass plate has a thickness of 2.

Abstract: A glass composition having excellent reinforcing capability and excellent solar control performance includes not smaller than 65 wt. % and smaller than 74 wt. % SiO2, 0-5 wt. % B2O3, 0.1-2.5 wt. % Al2O3, not smaller than 0 wt. % and smaller than 2 wt. % MgO, 5-15 wt. % CaO, 0-10 wt. % SrO, 0-10 wt. % BaO wherein a total amount of MgO, CaO, SrO and BaO is greater than 10 wt. % and not greater than 15 wt. %, 0-5 wt. % Li2O, 10-18 wt. % Na2O, 0-5 wt. % K2O wherein a total amount of Li2O, Na2O, and K2O is 10-20 wt. % and 0-0.40 TiO2.

Abstract: The present invention provides a method for manufacturing a glass sheet in which a raw material containing glass cullets is melted to form the glass sheet, wherein the glass cullets include a colored film and this colored film contains an alkali metal oxide, a silicon oxide, and fine particles containing carbon as their main component. The glass cullets can be recycled as a part of the raw material for glass in spite of the colored film included therein since in the glass cullets, the fine particles containing carbon as their main component are contained as a colorant.

Abstract: A glass has greenish color shade, a medium visible light transmittance, a low solar energy transmittance, and a low ultraviolet transmittance, and is suitable for a rear window of a vehicle arranged next to an ultraviolet/infrared absorbent glass with high light transmittance. The glass is formed of a base glass including 65 to 80 wt. % SiO2, 0 to 5 wt. %, Al2O3; 2 to 10 wt. % MgO, 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. % (excluding 7 wt. %), 10 to 18 wt. % Na2O, 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %, and 0 to 5 wt. % B2O3; and colorants including 1.0 to 1.35 wt. % total iron oxide as Fe2O3, 0.001 to 0.05 wt. % NiO, and 0 to 0.006 wt. % CoO (excluding 0.006 wt. %).

Abstract: An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein the glass has a turquoise blue or deep green color.

Abstract: Low transmittance glass is composed of soda-lime-silica glass including 0.001 to 2 wt. % Li2O and, as colorant, 0.7 to 2.2 wt. % total iron oxide expressed as Fe2O3 (T-Fe2O3) . The glass has visible light transmittance (YA) of not greater than 65%, measured by using the CIE illuminant A, total solar radiation transmittance (TG) of not greater than 60%, and ultraviolet transmittance defined by ISO 9050 of not greater than 25%, when the glass has a thickness between 2.1 mm and 6 mm.

Abstract: The ultraviolet/infrared absorbent low transmittance glass has a grayish green color shade, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass is formed of a base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO, wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.0180 wt. % CoO; and 0.003 to 0.2 wt. % NiO.

Abstract: The ultraviolet/infrared absorbent low transmittance glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO (a total amount of MgO and CaO is between 5 to 15 wt. %); 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O (a total amount of Na2O and K2O is between 10 to 20 wt. %); and 0 to 5 wt. % B2O3; and colorants including: 1.2 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; greater than 0.03 wt. % CoO; less than 0.0001 wt. % Se; and 0 to 0.2 wt. % NiO. The glass has a visible light transmittance measured by the illuminant A of not greater than 12% in case that the glass has a thickness of 4 mm. The glass has almost neutral color such as bluish green shade or deep green shade, low visible light transmittance, low solar energy transmittance and low ultraviolet transmittance, so that it is useful for windows of vehicles or buildings particularly for thickness and weight reduction of a privacy preventing glass.

Abstract: Ultraviolet/infrared absorbent green glass is composed of soda-lime-silica glass including 0.001 to 2 wt. % Li2O and, as colorant, 0.4 to 2 wt. % total iron oxide expressed as Fe2O3 (T-Fe2O3) wherein FeO expressed as Fe2O3 is 15 to 60% of T-Fe2O3. The glass has visible light transmittance (YA) of not less than 70%, measured by using the CIE illuminant A, and total solar radiation transmittance (TG) of not greater than 60%, when the glass has a thickness between 2.1 mm and 6 mm.

Abstract: To provide an ultraviolet and infrared ray absorbing green glass suitable as a window glass for automobiles, which does not substantially contain an expensive raw material whose recycling is difficult, can exhibit an optimum ultraviolet and infrared ray absorption when used in a thin plate having a thickness of not more than 3.5 mm, and has a low excitation purity, the ultraviolet and infrared ray absorbing colored glass plate having: a soda-lime silicate glass formulation substantially free from CeO2; and a thickness (t mm) of from 1.0 to 3.5 mm; containing 0.96 to 1.25%, in terms of Fe2O3, of total iron oxide (T-Fe2O3) and 0.0001 to 0.005% of CoO, as coloring components, with FeO/T-Fe2O3 falling within the range represented by the relational equation with respect to the thickness and falling within the range represented by the relational equation with respect to the content of T-Fe2O3; and when the glass plate has a thickness of 2.

Abstract: A laminated glass having a low haze ratio and an excellent infrared rays shield performance and a glass composition suitable for use in a laminated glass and easy with respect to melting and molding works, which is a glass composition comprising 65 to 74% of SiO2, 0 to 5% of B2O3, 1.9 to 2.5% of Al2O3, 1.0 to 3.0% of MgO, 5 to 10% of CaO, 0 to 10% of SrO, 0 to 10% of BaO, 0 to 5% of Li2O, 13 to 17% of Na2O, 0.5 to 5% of K2O, 0 to 0.40% of TiO2 and 0.3 to 2.0% of total iron oxide in terms of Fe2O3, on a weight basis, in which the sum of MgO, CaO, SrO and BaO is from 10 to 15% and the sum of Li2O, Na2O and K2O is from 14 to 20%, wherein the glass composition has a visible light transmittance of 80% or more as measured with the CIE Standard illuminant A and a total solar energy transmittance of not more than 62% at a thickness of 2.1 mm, and a laminated glass using a glass sheet made of that glass composition.

Abstract: An ultraviolet and infrared radiation absorbing green glass comprises: in % by weight, as coloring components, 0.5 to 1.1%, excluding 0.5%, total iron oxide in terms of Fe2O3; 0 to 2.0% CeO2, 0 to 1.0% TiO2; 0.0005 to 0.01% NiO; and 0.0001 to 0.001% CoO; wherein, when the glass has a thickness of 4 mm, the glass has a visible light transmittance of 70% or more, a total solar energy transmittance of 60% or less, and an ultraviolet transmittance defined by ISO 9050 of 25% or less.

Abstract: A method for shifting the absorption peak wavelength in the wavelength range 900-1600 nm of an infrared radiation absorbing glass from less than 1100 nm to 1100 nm or longer without substantially changing the tint of the glass, comprising the step of irradiating with ultraviolet light of 400 nm or shorter at an energy density of 1.0×106 J/m2/hr or more to increase the content of FeO in the irradiated glass by reducing Fe (III) to Fe (II), the ultraviolet light irradiated glass thereby comprising 0.02 wt. % or more FeO in terms of Fe2O3. The glass to be irradiated comprises, in % by weight: 65 to 80% SiO2, 0 to 5% Al2O3, 0 to 10% MgO, 5 to 15% CaO, 10 to 18% Na2O, 0 to 5% K2O, 5 to 15% MgO+CaO, 10 to 20% Na2O+K2O, and 0 to 5% B2O3; 0.02% or more total iron oxide (T-Fe2O3) in terms of Fe2O3, 0 to 2.0% CeO2, 0 to 1.0% TiO2, 0 to 0.005% CoO, and 0 to 0.005% Se.

Abstract: A glass has greenish color shade, a medium visible light transmittance, a low solar energy transmittance, and a low ultraviolet transmittance, and is suitable for a rear window of a vehicle arranged next to an ultraviolet/infrared absorbent glass with high light transmittance. The glass is formed of a base glass including 65 to 80 wt. % SiO2, 0 to 5 wt. %, Al2O3; 2 to 10 wt. % MgO, 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. % (excluding 7 wt. %), 10 to 18 wt. % Na2O, 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %, and 0 to 5 wt. % B2O3; and colorants including 1.0 to 1.35 wt. % total iron oxide as Fe2O3, 0.001 to 0.05 wt. % NiO, and 0 to 0.006 wt. % CoO (excluding 0.006 wt. %).

Abstract: Low transmittance glass is composed of soda-lime-silica glass including 0.001 to 2 wt. % Li2O and, as colorant, 0.7 to 2.2 wt. % total iron oxide expressed as Fe2O3 (T-Fe2O3). The glass has visible light transmittance (YA) of not greater than 65%, measured by using the CIE illuminant A, total solar radiation transmittance (TG) of not greater than 60%, and ultraviolet transmittance defined by ISO 9050 of not greater than 25%, when the glass has a thickness between 2.1 mm and 6 mm. Ultraviolet/infrared absorbent green glass is composed of soda-lime-silica glass including 0.001 to 2 wt. % Li2O and, as colorant, 0.4 to 2 wt. % total iron oxide expressed as Fe2O3 (T-Fe2O3) wherein FeO expressed as Fe2O3 is 15 to 60% of T-Fe2O3. The glass has visible light transmittance (YA) of not less than 70%, measured by using the CIE illuminant A, and total solar radiation transmittance (TG) of not greater than 60%, when the glass has a thickness between 2.1 mm and 6 mm.

Abstract: The ultraviolet/infrared absorbent low transmittance glass has a grayish green color shade, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass is formed of a base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO, wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.0180 wt. % CoO; and 0.003 to 0.2 wt. % NiO.

Abstract: The ultraviolet/infrared absorbent low transmittance glass has an almost neutral color such as greenish gray, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: 1.25 to 1.5 wt. % total iron oxide (T—Fe2O3) expressed as Fe2O3; 0.01 to 0.019 wt. % CoO; more than 0.0008 wt. % and equal to or less than 0.003 wt. % Se; and 0.055 to 0.1 wt. % NiO.