Nippon Sheet Glass Company, Limited

Other

Shigekazu Yoshii

Yukihito Nagashima

Hiromitsu Seto

Koichi Sakaguchi

Isamu Kuroda

Masahiro Tsuda

Hiroyuki Tanaka

Nobuyuki Yamamoto

Akihiro Koyama

Shoichi Kishimoto

Kosuke Fujiwara

Shigeki Nakagaki

Tetsuro Yoshii

Keihachiro Tanaka

Yasushi Fujimoto

Masahiro Nakatsuka

Nbuyuki Yamamoto

The present invention provides a glass composition that exhibits a fluorescence function and an optical amplification function in a wide wavelength range. This glass composition includes a bismuth oxide, a silicon oxide, an aluminum oxide, and a divalent metal oxide, and the glass composition emits fluorescence in an infrared wavelength region through irradiation of excitation light, with bismuth contained in the bismuth oxide functioning as a fluorescent source.

Glass composition that emits fluorescence in infrared wavelength region

An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO; 0 to 5 wt. % AlO; 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. % NaO; 0 to 5 wt. % KO wherein a total amount of NaO and KO is 10 to 20 wt. %; and 0 to 5 wt. % BO, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-FeO) expressed as FeO; 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.

Ultraviolet/infrared absorbent low transmittance glass

A glass composition having excellent reinforcing capability and excellent solar control performance includes not smaller than 65 wt. % and smaller than 74 wt. % SiO, 0-5 wt. % BO, 0.1-2.5 wt. % AlO, 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. % LiO, 10-18 wt. % NaO, 0-5 wt. % KO wherein a total amount of LiO, NaO, and KO is 10-20 wt. % and 0-0.40 TiO.

Glass composition

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. % SiO, 0 to 5 wt. %, AlO; 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. % NaO, 0 to 5 wt. % KO wherein a total amount of NaO and KO is 10 to 20 wt. %, and 0 to 5 wt. % BO; and colorants including 1.0 to 1.35 wt. % total iron oxide as FeO, 0.001 to 0.05 wt. % NiO, and 0 to 0.006 wt. % CoO (excluding 0.006 wt. %).

Ultraviolet/infrared absorbent green glass with medium light transmittance

The planar lens of the invention having a flat glass substrate, in which a refractive index distribution is formed by diffusing a refractive index-increasing component into the flat glass substrate in a substantially hemispherical form or semicylinder form, wherein the refractive index-increasing component is silver, and the flat glass substrate comprises Li as an alkali metal that is subject to an ion exchange with the silver.

Planar lens

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. % SiO ; 0 to 5 wt. % Al O ; 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. % Na O; 0 to 5 wt. % K O, wherein a total amount of Na O and K O is between 10 and 20 wt. %; and 0 to 5 wt. % B O , and colorants including: more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe O ) expressed as Fe O ; 0.001 to 0.0180 wt. % CoO; and 0.003 to 0.2 wt. % NiO.

The ultraviolet/infrared absorbent low transmittance glass consists of base glass including: 65 to 80 wt. % SiO ; 0 to 5 wt. % Al O ; 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. % Na O; 0 to 5 wt. % K O (a total amount of Na O and K O is between 10 to 20 wt. %); and 0 to 5 wt. % B O ; and colorants including: 1.2 to 2.2 wt. % total iron oxide (T-Fe O ) expressed as Fe O ; 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.

Ultraviolet/infrared absorbent green glass is composed of soda-lime-silica glass including 0.001 to 2 wt. % Li O and, as colorant, 0.4 to 2 wt. % total iron oxide expressed as Fe O (T-Fe O ) wherein FeO expressed as Fe O is 15 to 60% of T-Fe O . 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.

Ultraviolet/infrared absorbent green glass

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 Fe O ; 0 to 2.0% CeO , 0 to 1.0% TiO ; 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.

Ultraviolet and infrared radiation absorbing green glass

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. % SiO ; 0 to 5 wt. % Al O ; 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. % Na O; 0 to 5 wt. % K O wherein a total amount of Na O and K O is between 10 and 20 wt. %; and 0 to 5 wt. % B O , and colorants including: 1.25 to 1.5 wt. % total iron oxide (T&mdash;Fe O ) expressed as Fe O ; 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. The glass with a thickness between 2 and 5 mm has a visible light transmittance (YA) in a range from 10% to 25% using illuminant &ldquo;A&rdquo;, a solar energy transmittance in a range from 5% to 20% and an ultraviolet transmittance (Tuv) of not more than 15%.

Ultraviolet-infrared absorbent low transmittance glass

The ultraviolet/infrared absorbent low transmittance glass has a grayish, almost neutral 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 consists of base glass including: 65 to 80 wt. % SiO ; 0 to 5 wt. % Al O ; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 5 to 15 wt. %; 10 to 18 wt. % Na O; 0 to 5 wt. % K O wherein a total amount of Na O and K O is 10 to 20 wt. %; and 0 to 5 wt. % B O , and colorants including: 1.0 to 1.6 wt. % total iron oxide (T-Fe O ) expressed as Fe O ; more than 0.019 wt. % and equal to or less than 0.05 wt. % CoO; more than 0.0008 wt. % and equal to or less than 0.003 wt. % Se; and more than 0.05 wt. % and equal to or less than 0.1 wt. % NiO. The glass with any one of thicknesses between 1.8 mm and 5 mm has a visible light transmittance (YA) measured by the C.I.E. illuminant &ldquo;A&rdquo; in a range from 5 to 25%, a solar energy transmittance (TG) of 5 to 25%, and an ultraviolet transmittance (Tuv) specified by ISO of not greater than 15%.

An ultraviolet/infrared absorbent low transmittance glass consists of base glass, and colorants. The base glass comprises 65 to 80 wt. % SiO ; 0 to 5 wt. % Al O ; greater than 2 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. % Na O; 0 to 5 wt. % K O wherein a total amount of Na O and K O is 10 to 20 wt. %; and 0 to 5 wt. % B O . The colorants without Se is formed of 1.25 to 2.2 wt. % total iron oxide (T&mdash;Fe O ) expressed as Fe O ; 0.001 to 0.03 wt. % CoO; and 0.003 to 0.2 wt. % NiO. The glass has a turquoise blue or deep green color, and exhibits low or middle visible light transmittance, low total solar energy transmittance and low ultraviolet transmittance.

An ultraviolet/infrared absorbent low transmittance glass is formed of a base glass and colorants. The base glass contains 65 to 80 wt. % SiO,; 0 to 5 wt. % Al,O,; 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. % Na,O; 0 to 5 wt. % K,O wherein a total amount of Na,O and K,O is in a range of 10 and 20 wt. %; and 0 to 5 wt. % B,O,. The colorants contains more than 1.2 wt. % and not more than 1.5 wt. % total iron oxide (T-Fe,O,) expressed as Fe,O,; equal to or more than 0.003 wt. % and less than 0.015 wt. % CoO; 0.0009 to 0.005 wt. % Se; 0.0005 to 0.05 wt. % NiO; and 0 to 0.2 wt. % of TiO,, wherein FeO expressed as Fe,O,is between 15 and 50 wt. % of T-Fe,O,. The ultraviolet/infrared absorbent low transmittance glass has a bronze or gray color shade, low visible light transmittance, low solar energy transmittance and low ultraviolet transmittance, so that it is useful for a privacy protecting glass in a rear window of a vehicle.

An ultraviolet and infrared radiation absorbing and low transmitting glass having neutral gray to neutral grayish green tint and also having low visible light and solar energy transmission and a low ultraviolet light transmission, further showing an excellent protection of interior trim of automobiles against deterioration and fading, and also showing privacy protection effect when applied especially to window glass of automobiles and to window glass of buildings. The ultraviolet and infrared radiation absorbing and low transmitting glass comprising in % by weight: basic glass components comprising 65 to 80% SiO.sub.2, 0 to 5% Al.sub.2 O.sub.3, 0 to 10% MgO, 5 to 15% CaO, 5 to 15% MgO+CaO, 10 to 20% Na.sub.2 O, 0 to 5% K.sub.2 O, 10 to 20% Na.sub.2 O+K.sub.2 O, and 0 to 5% B.sub.2 O.sub.3, and coloring components comprising 0.65 to 0.95% total iron oxide (T-Fe.sub.2 O.sub.3) in terms of Fe.sub.2 O.sub.3, 0.9 to 2.3% TiO.sub.2, 0 to 2.0% CeO.sub.2, 0.019 to 0.04% CoO, 0 to 0.002% Se, and 0.01 to 0.2% NiO, wherein the glass has a visible light transmission (YA) and a solar energy transmission (TG) of 30% or less and 10 to 35%, respectively, when the glass has a thickness of 3.1 to 5 mm.

Ultraviolet and infrared radiation absorbing and low transmitting glass

The ultraviolet/infrared absorbent low transmittance glass has an almost neutral greenish color, middle visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a window of a vehicle or a building and capable of preventing degradation and discoloration of interior materials and protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO.sub.2 ; 0 to 5 wt. % Al.sub.2 O.sub.3 ; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between sand 15 wt. %; 10 to 20 wt. % Na.sub.2 O; 0 to 5 wt. % K.sub.2 O wherein a total amount of Na.sub.2 O and K.sub.2 O is between 10 to 20 wt. %; and 0 to 5 wt. % B.sub.2 O.sub.3, and colorants including: 0.7 to 0.95 wt. % total iron oxide (T-Fe.sub.2 O.sub.3) expressed as Fe.sub.2 O.sub.3 ; 1.1 to 2.3% TiO.sub.2, 0 to 2.0% CeO.sub.2, 0.013 to 0.025 wt. % CoO; 0 to 0.0008% Se; and 0.01 to 0.07% NiO. A visible light transmittance (YA) in a range from 25% to 45% and a total solar energy transmittance is in a range from 10% to 40% at a thickness between 3.1 and 5 mm.

Growing community of inventors

Osaka, Japan

Shigekazu Yoshii