Abstract: An optical glass comprising SiO2, B2O3 and La2O3 and one or more oxides selected from the group consisting of ZrO2, Nb2O5 and Ta2O5, having a refractive index of 1.83 or over and an Abbe number of 35 or over and being free of F.

Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode and a thin film solid electrolyte including lithium ion conductive inorganic substance. The thin film solid electrolyte has thickness of 20 ?m or below and is formed directly on an electrode material or materials for the positive electrode and/or the negative electrode. The thin film solid electrolyte has lithium ion conductivity of 10?5Scm?1 or over and contains lithium ion conductive inorganic substance powder in an amount of 40 weight % or over in a polymer medium. The average particle diameter of the inorganic substance powder is 0.5 ?m or below. According to a method for manufacturing the lithium ion secondary battery, the thin film solid electrolyte is formed by coating the lithium ion conductive inorganic substance directly on the electrode material or materials for the positive electrode and/or the negative electrode.

Abstract: An optical glass having a refractive index (nd) within a range from 1.825 to 1.870, an Abbe number (?d) within a range from 22 to less than 27, a transformation temperature (Tg) within a range from 530° C. to 585° C. and an mean coefficient of linear thermal expansion (?) within a range from 80×10?7° C.?1 to 103×10?7° C.?1, comprising SiO2, TiO2, Nb2O5 and Li2O and being substantially free of a Pb compound.

Abstract: An optical glass of the present invention has optical constants of a refractive index (nd) within a range from 1.75 to 1.85 and an Abbe number (?d) within a range from 35 to 45, comprises SiO2 and B2O3 as essential components and one or more components selected from the group consisting of ZrO2, Nb2O5, Ta2O5 and WO3, has a glass transition temperature (Tg) of 580° C. or below and has weathering resistance (surface method) of Class 1 or Class 2.

Abstract: An all solid type lithium ion secondary battery which has high heat resistance and can be used over a broad temperature range, has a high battery capacity and an excellent charging-discharging characteristic, and can be used stably for a long period of time includes an inorganic substance including a lithium ion conductive crystalline and is substantially free of an organic substance and an electrolytic solution. The inorganic substance comprising a lithium ion conductive crystalline preferably is lithium ion conductive glass-ceramics.

Abstract: There are provided glass-ceramics comprising, in mass %, 50-60% SiO2, 22-26% Al2O3 and 3-5% Li2O, having an average crystal grain diameter exceeding 100 nm, and having an average linear thermal expansion coefficient of 30×10?7/° C. or below within a temperature range of 0° C. to 50° C. These glass-ceramics are manufactured by a step of melting glass raw materials, a step of forming the molten glass, a step of annealing the formed glass, a first heat treating step for heat treating the annealed glass at a temperature of 650-750° C. for 0.1 hour to 200 hours, and a second heat treating step for heat treating the glass at a temperature of 800-1000° C. for 0.1 hour to 50 hours.

Abstract: Glass has optical constants of a refractive index (nd) of 1.79 or over and an Abbe number (?d) of 27 or over and a specific gravity (D) of 3.20 or over and is free from devitrification in the interior of the glass in a reheat test. The glass has chemical durability according to the Powder Method (acid-proof property RA according to the Powder Method) which is Class 1.

Abstract: An optical glass has a refractive index (nd) of 1.60 or over and excellent transmittance and internal quality. The optical glass comprises 0.1-4 mass % of Ta2O5 to total mass of glass calculated on oxide basis, has ratio of 0.95<Ta2O5/(Ta2O5+(ZrO2)+TiO2+Nb2O5+WO3)×5)?1.00, and further comprises SiO2+B2O3+Al2O3+BaO in a total amount of 81% or over.

Abstract: An optical glass comprising SiO2, B2O3 and La2O3 and one or more oxides selected from the group consisting of ZrO2, Nb2O5 and Ta2O5, having a refractive index of 1.83 or over and an Abbe number of 35 or over and being free of F.

Abstract: In the jointing method of jointing an optical fiber F a softening point of which is higher than an optical lens L to the optical lens L, only the optical lens is softened by heating, and an end face as a joint portion of the optical fiber is pushed into a joint portion of the softened optical lens to thereby joint them.

Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode and a thin film solid electrolyte including lithium ion conductive inorganic substance. The thin film solid electrolyte has thickness of 20 ?m or below and is formed directly on an electrode material or materials for the positive electrode and/or the negative electrode. The thin film solid electrolyte has lithium ion conductivity of 10?5 Scm?1 or over and contains lithium ion conductive inorganic substance powder in an amount of 40 weight % or over in a polymer medium. The average particle diameter of the inorganic substance powder is 0.5 ?m or below. According to a method for manufacturing the lithium ion secondary battery, the thin film solid electrolyte is formed by coating the lithium ion conductive inorganic substance directly on the electrode material or materials for the positive electrode and/or the negative electrode.

Abstract: A globular glass manufacturing apparatus includes: a flow nozzle to flow a molten glass in a form of continuous flow, a collection tank to collect droplet-like glass gobs deformed from the molten glass flowing in a form of continuous flow during fall. Further, the globular glass manufacturing apparatus comprises a gas nozzle to shift one or both of falling trajectories of the glass gobs neighboring above and below by blowing gas to the glass gobs or sucking the glass gobs, wherein the gas nozzle rotates in which the center is on falling trajectory of the glass gobs.

Abstract: An optical glass having optical constants of refractive index (nd) within a range from 1.49 to 1.54 and Abbe number (? d) within a range from 55 to 65 comprises, in mass %, SiO2 >65-75% R2O (R is at least one selected from the group ?15-25% consisting of Li, Na, K and Cs) where Li2O ?0.1-5.0% Na2O ?1.0-10.0% K2O ?5.0-20.0% and Cs2O ?0-5.0% R?O (R? is at least one selected from the group ?0.5-10% consisting of Mg, Ca, Sr or Ba) where MgO ?0-10% and/or CaO ?0-10% and/or SrO ?0-10% and/or BaO ?0-10% ZnO ?0-<3.0% and/or B2O3 ?0-6.0% and/or Al2O3 ?0-<1.0% and/or TiO2 ?0-<2.0% and/or ZrO2 ?0-2% and/or WO3 ?0-3.0% and/or Sb2O3 ?0-2.0% and a fluoride or fluorides of a metal element or ?0-2%.

Abstract: An optical glass has a low glass transition temperature (Tg) and optical constants in which a refractive index (nd) is in the range of from 1.70 to less than 1.74 and an Abbe number (?d) is between 40 and 45 (excluding 40 and 45), has a content of SiO2 is 17% by mass or less, a glass transition temperature (Tg) is 540° C. or less, and a weathering resistance (surface-method) in Class 1 or 2, and has excellent chemical durability, particularly weathering resistance (surface-method) and is appropriate for precision mold press forming.

Abstract: An optical glass having a refractive index (nd) within a range from 1.825 to 1.870, an Abbe number (?d) within a range from 22 to less than 27, a transformation temperature (Tg) within a range from 530° C. to 585° C. and an mean coefficient of linear thermal expansion (?) within a range from 80×10?7° C.?1 to 103×10?7° C.?1, comprising SiO2, TiO2, Nb2O5 and Li2O and being substantially free of a Pb compound.

Abstract: An optical glass of the present invention has optical constants of a refractive index (nd) within a range from 1.75 to 1.85 and an Abbe number (? d) within a range from 35 to 45, comprises SiO2 and B2O3 as essential components and one or more components selected from the group consisting of ZrO2, Nb2O5, Ta2O5 and WO3, has a glass transition temperature (Tg) of 580° C. or below and has weathering resistance (surface method) of Class 1 or Class 2.

Abstract: There are provided glass-ceramics comprising, in mass %, 50-60% SiO2, 22-26% Al2O3 and 3-5% Li2O, having an average crystal grain diameter exceeding 100 nm, and having an average linear thermal expansion coefficient of 30×10?7/° C. or below within a temperature range of 0° C. to 50° C. These glass-ceramics are manufactured by a step of melting glass raw materials, a step of forming the molten glass, a step of annealing the formed glass, a first heat treating step for heat treating the annealed glass at a temperature of 650-750° C. for 0.1 hour to 200 hours, and a second heat treating step for heat treating the glass at a temperature of 800-1000° C. for 0.1 hour to 50 hours.

Abstract: A solid electrolyte comprising powder of an inorganic substance comprising a lithium ion conductive crystal or powder of a lithium ion conductive glass-ceramic and an organic polymer added with an inorganic or organic lithium salt, and being free of an electrolytic solution. The organic polymer is a copolymer, a bridge structure or a mixture thereof of polyethylene oxide and other organic polymer or polymers. A lithium ion secondary battery comprises this solid electrolyte.

Abstract: Glass has optical constants of a refractive index (nd) of 1.79 or over and an Abbe number (?d) of 27 or over and a specific gravity (D) of 3.20 or over and is free from devitrification in the interior of the glass in a reheat test. The glass has chemical durability according to the Powder Method (acid-proof property RA according to the Powder Method) which is Class 1.

Abstract: An optical glass comprising in mass %: P2O5 25%-less than 45% B2O3 6-20% BaO 24%-less than 40% ZnO 3-14% MgO 0-15% CaO 0-15% SrO 0-15% Li2O 0-5% Na2O 0-5% K2O 0-5% WO3 0-5% and Al2O3 0-5%. The optical glass should preferably contain 0.1-5% WO3, 3.6-15% MgO, 0.1-5% Li2O+Na2O+K2O, 0—less than 0.5% and Sb2O3+As2O3 with the mass ratio of ZnO/BaO being 0.12—less than 0.50. The optical glass should preferably have refractive index (nd) within a range from 1.54 to 1.65 and Abbe number (?d) within a range exceeding 57 up to 69 and liquid phase temperature within a range from 870° C. to 930° C. There is provided an optical glass having high resistance to devitrification and medium refractive index and low dispersion characteristics which is free of ingredients such as Ta2O5 having a high cost of raw material and therefore can be manufactured at a relatively low cost of raw materials.