A synthetic quartz glass lid for use in optical device packages is prepared by furnishing a synthetic quartz glass lid precursor comprising a synthetic quartz glass substrate (1) and a metal or metal compound film (2), and forming a metal base adhesive layer (3) on the metal or metal compound film (2). The metal or metal compound film contains Ag, Bi, and at least one element selected from P, Sb, Sn and In.

A chalcopyrite compound-based thin film in which an alkali metal is incorporated, and a method of fabricating the same are provided. The chalcopyrite compound-based thin film in which an alkali metal is incorporated may have improved film characteristics such as excellent chalcopyrite crystal characteristics and improved surface characteristics, and may exhibit improved optical characteristics by control of the distribution of constituent elements in the chalcopyrite compound layer. Accordingly, performance of a solar cell including the chalcopyrite compound-based thin film may be improved. The chalcopyrite compound-based thin film may be easily fabricated through a solution process.

A cover for a radar sensor for motor vehicles, which has a wall provided with a three-dimensional relief structure, in which the wall including the relief structure is made of deep-drawn glass.

A manufacturing method of a metal-coated glass fiber according to the present invention includes: drawing a glass fiber from a bushing nozzle of a glass melting furnace; discharging, from an orifice of a metal melting furnace in which a metal for forming a metal coating layer is melted, a molten metal in a dome shape or substantially spherical shape; and bringing the glass fiber into contact with the molten metal, wherein the metal melting furnace has on a wall surface thereof two orifices to discharge two droplets of the molten metal such that end portions of the two droplets abut or overlap each other to define a recess therebetween, and wherein the metal coating layer is formed on the glass fiber by passing the glass fiber downward through the recess and bringing the glass fiber into contact with both of the two droplets.

The invention relates to an almost opaque decorative glass panel comprising a substrate made of a vitreous material bearing a multilayer stack including at least one light-absorbing functional layer and transparent dielectric coatings such that the light-absorbing functional layer is enclosed between dielectric coatings. The light-absorbing functional layer has a geometric thickness comprised between 25 and 140 nm, and an extinction coefficient k of at least 1.8. The multilayer stack in addition comprises at least one attenuating layer placed between the substrate and the light-absorbing functional layer, having a thickness comprised between 1 and 50 nm, having a refractive index n higher than 1 and an extinction coefficient k of at least 0.5. Furthermore, a transparent dielectric coating the optical thickness of which is comprised between 30 and 160 nm, and the refractive index n of which is higher than 1.5, is placed adjacent to the attenuating layer on the side opposite the light-absorbing functional layer. The invention provides a decorative panel offering a pleasant aesthetic effect.

Provided is a silver-tellurium-coated glass powder including: a tellurium-based glass powder containing tellurium in an amount of 20% by mass or more; and a coating layer on a surface of the tellurium-based glass powder, the coating layer containing silver and tellurium as a main component. Preferable aspects include an aspect where the coating layer containing silver and tellurium as a main component further contains a component that is other than silver and tellurium and contained in the tellurium-based glass powder, and an aspect where the component that is lo other than silver and tellurium and contained in the tellurium-based glass powder contains one or more kinds selected from zinc, lead, bismuth, silicon, lithium, and aluminum.

A cover for a radar sensor for motor vehicles, which has a wall provided with a three-dimensional relief structure, in which the wall including the relief structure is made of deep-drawn glass.

A cover for a radar sensor for motor vehicles, which has a wall provided with a three-dimensional relief structure, in which the wall including the relief structure is made of deep-drawn glass.

The present disclosure relates to a method for manufacturing a decoration element, the method including depositing a light reflective layer having a structure of two or more islands separated from each other on one surface of a light absorbing layer; and dry etching the light absorbing layer using the island as a mask, wherein a resistance value of the decoration element after the dry etching of the light absorbing layer increases by two times or more compared to before the dry etching of the light absorbing layer.

The present invention aims to provide a vehicular exterior member that is excellent in strength and cost, and sufficiently ensures a viewing field of sharpness of a thermal image obtained by a far-infrared camera. A vehicular exterior member that includes a light blocking region and is configured to be attached to a vehicle equipped with a far-infrared camera. The vehicular exterior member further includes, in the light blocking region, a far-infrared ray transmitting region having an opening and a far-infrared ray transmitting member disposed in the opening. An average transmittance of far-infrared rays having a wavelength ranging from 8 to 13 ?m of the far-infrared ray transmitting member is equal to or larger than 25%. A length of the longest straight line in straight lines connecting any desired two points on a surface on a vehicle exterior side of the far-infrared ray transmitting member is equal to or smaller than 80 mm. A diameter of the largest circle in circles formed in a projected shape obtained by projecting the far-infrared ray transmitting member in an optical axis direction of the far-infrared camera is equal to or larger than 12 mm. An average thickness of the far-infrared ray transmitting member is equal to or larger than 1.5 mm.