Abstract: The apparatus for producing glass beads of the present invention comprises a melting pot 2 for heating and melting glass, a nozzle 2A for dripping molten glass 4 in the melting pot 2, which is disposed at the bottom of the melting pot 2, and a liquid glass droplet receiver 11 filled with cooling solution 150 for cooling the liquid glass droplet 10 dripped from the nozzle 2A, which is disposed under the nozzle 2A, wherein the cooling solution 150 is made from a material that forms a bubble layer around the liquid glass droplet 10 as the cooling solution 150 is vaporized due to the heat of the liquid glass droplet 10 during a period when the liquid glass droplet 10 is cooled down to a temperature lower than the glass transfer temperature in the cooling solution 150.

Abstract: An optical waveguide comprising cladding 1 and core segment 20 buried in cladding 1 and serving as a waveguide, wherein a combination of glass material constituting the core segment 20 and another glass material constituting the cladding 1 is so selected that an absolute value of difference in coefficient of thermal expansion between these materials (?1-?2) is within a range of 0 and 9×10?7° C., where ?1 denotes a coefficient of thermal expansion of the former material and ?2 denotes that of the latter material.

Abstract: A mold lens glass including B2O3, SiO2, La2O3, ZnO, BaO, and CaO, wherein the components in the composition are present in a weight ratio: of B2O3 (25% to 35% by weight), SiO2 (1% to 7% by weight), wherein the total amount of B2O3 and SiO2 is 30% to 40% by weight. La2O3 is present in an amount of 12% to 20% by weight, and the total amount of ZnO, BaO and CaO is 40% to 55% by weight. By using the mold lens glass of the present invention, it is possible to obtain a mold lens glass having a high refractive index, excellent water resistance, and a stable glassy state.

Abstract: The apparatus for producing glass beads of the present invention comprises a melting pot 2 for heating and melting glass, a nozzle 2A for dripping molten glass 4 in the melting pot 2, which is disposed at the bottom of the melting pot 2, and a liquid glass droplet receiver 11 filled with cooling solution 150 for cooling the liquid glass droplet 10 dripped from the nozzle 2A, which is disposed under the nozzle 2A, wherein the cooling solution 150 is made from a material that forms a bubble layer around the liquid glass droplet 10 as the cooling solution 150 is vaporized due to the heat of the liquid glass droplet 10 during a period when the liquid glass droplet 10 is cooled down to a temperature lower than the glass transfer temperature in the cooling solution 150.

Abstract: An optical waveguide comprising cladding 1 and core segment 20 buried in cladding 1 and serving as a waveguide, wherein a combination of glass material constituting the core segment 20 and another glass material constituting the cladding 1 is so selected that an absolute value of difference in coefficient of thermal expansion between these materials (&agr;1−&agr;2) is within a range of 0 and 9×10−7/° C., where &agr;1 denotes a coefficient of thermal expansion of the former material and &agr;2 denotes that of the latter material.

Abstract: A multilayer LC composite component includes a glass-ceramic composition and internal electrodes containing silver or copper as a main component. The multilayer LC composite component is outstanding in mounting reliability particularly to a resin substrate, easy to manufacture, and has excellent electric characteristics at high frequency. The glass-ceramic composition includes 45 to 35 wt. % of forsterite powder and 55 to 65 wt. % of glass composite powder, and compositions of the glass composite powder include 40 to 50 wt. % of SiO2, 30 to 40 wt. % of BaO, 3 to 8 wt. % of Al2O3, 8 to 12 wt. % of La2O3, and 3 to 6 wt. % of B2O3. It is high in flexural strength, moderately high in coefficient of thermal expansion, easy to use in manufacturing a greensheet, and densely sintered at a temperature of less than 950 degrees C.

Abstract: Mold lens glass including B2O3, SiO2, La2O3, ZnO, BaO, and CaO, wherein a composition in weight ratio is: B2O3 is 25% to 35% by weight, SiO2 is 1% to 7% by weight, where a total amount of B2O3 and SiO2 is 30% to 40% by weight. A content of La2O3 is 12% to 20% by weight, and a total amount of ZnO, BaO and CaO is 40% to 55% by weight. By using the mold lens glass of the present invention, it is possible to obtain mold lens glass having high refractive index, excellent water resistance and a stable glassy state.

Abstract: A diplexer employed in mobile communications equipment such mobile phones which can divide signals into two channels with a simple configuration without interfering the other band. In this diplexer, an inductor 105 is connected between a &pgr;-type three-stage one polar low-pass filter 115 and a common terminal 113 as a first matching circuit, and a capacitor 106A is connected between a one polar band-pass filter 116 and a common terminal 113 as a second matching circuit so that interference with the other band can be prevented and the higher harmonics can be sufficiently attenuated with simple configuration.

Abstract: A pressure sensor including a plate-shaped metal substrate; a glass layer provided on a surface of the metal substrate and mainly containing a partially devitrified enamel composition; a resistor element which is provided on a surface of the glass layer and has an electric resistance changed in accordance with the degree of strain thereof; and a pair of electrodes connected to the resistor element. The resistor element is provided so as to receive a stress, a pressure, or a load applied perpendicularly to a surface thereof. Alternatively, both surfaces of the metal substrate are provided with glass layers, respectively, and the resistor element is provided on one of the glass layers.

Abstract: This is to introduce a strain sensor of high quality and excellent durability. This strain sensor is composed of a basic metal body, a crystallized glass layer formed over the surface of the basic metal body, and a resistance element that changes its resistance value by strain changes and is built on the glass layer surface. By this structure, where the crystallized glass layer fired at a high temperature is employed, both of the composition, the basic metal body and the glass layer, are fused with each other at the boundary plane, making their adhesion very strong. No peeling between the basic metal body and the glass layer will take place even under the severe environmental conditions such as high temperature and heavy load.

Abstract: The present invention relates to a glass ceramic which can provide a board comprising a metal substrate and the glass ceramic coated on said substrate, particularly a board comprising said board and a fine wiring pattern applied onto said board by means of thick film printing. In particular, it specified the composition of the glass ceramic.

Abstract: The present invention relates to a glass ceramic which can provide a board comprising a metal substrate and the glass ceramic coated on said substrate, particularly a board comprising said board and a fine wiring pattern applied onto said board by means of thick film printing. In particular, it specifies the composition of the glass ceramic.

Abstract: The present invention relates to an article having an insulation abrasion-resistance coated layer composed of glass ceramics containing a given amount or more by weight at least either of oxides of divalent alkaline earth metals of a group composed of BaO, MgO, CaO and ZnO and containing a given amount or less the oxides of univalent alkali metal of a group composed of Na.sub.2 O, K.sub.2 O and Li.sub.2 O on the surface of the metallic base body. As it may be used in bearing, mechanical seal and tape guide post, the abrasion-resistance of the sliding portion may be improved.

Abstract: Disclosed is a method of forming an electrically conductive circuit comprising the steps of: preparing a transferring paper in which an assembly of electrically conductive foil carrying a predetermined pattern and an insulating layer containing glass frit and an overcoat layer consisting of a resin film having good burning property are provided on a transferring paper covered with a paste layer; removing an integral structure of the conductive foil, the insulating layer, and the overcoat layer from the transferring paper; transferring the removed integral structure onto a substrate; and burning the substrate with the integral structure set thereon at a temperature where the glass is soften. According to this method, it is possible to eliminate transformation or damage of a conductive foil where a conductive foil is singly disposed on a substrate.