摘要:
A manufacturing apparatus of a glass product, comprising: a plurality of lower molds; a nozzle for allowing a molten glass droplet to drop therefrom; and a shifting unit for successively shifting any one of lower molds, selected among the lower molds, to a dropping position at which the molten glass droplet drops from the nozzle in synchronized timing with dropping of the molten glass droplet, which can efficiently press-mold molten glass droplets that are allowed to drop from a nozzle of a melting tank; and a manufacturing method applied to the apparatus.
摘要:
In an optical element manufacturing method for press molding in which primary molten glass droplets are caused to collide with a plate to separate some of the droplets and fine droplets of a secondary molten glass that have passed through an opening are dropped onto a lower die to perform press molding, by setting the diameter of the opening of the plate in the range of 50-100% of the effective diameter of the optical functional surface provided for the lower die, manufacturing conditions for the secondary molten glass droplets can be set easily and properly, and optical elements with satisfactory quality of both appearance and optical performance can be manufactured reliably.
摘要:
A preform is supplied between a pair of molding dies, followed by heating, softening and pressing. A smallest radius of curvature in the preform is smaller than a radius of a globular member having a volume equal to that of the preform. In this fabricating method, -an abutment portion between the molding die and the preform is located at a curved surface or the center of the molding die, thereby preventing any local abutment of the preform against the molding die.
摘要:
A process for producing a glass molding, in which a glass molding of stable quality can be efficiently produced through minimizing of temperature fluctuation of molten glass drops at pressure molding operation; and an apparatus for production of a glass molding used in this process. Molten glass drops are fed into an inferior die by causing the molten glass drops to fall from above toward the inferior die. The arrival of molten glass drops having fallen at a given location is detected, and pressurization of the molten glass drops by means of molding dies is initiated upon the passage of a given time since the detection.
摘要:
A substrate protective film composed of chromium metal is formed on a molding surface of a mold base material composed of cemented carbide. The substrate protective film is oxidized by heat treatment or ion implantation, so that a surface protective film composed of chromium oxide is formed. A pair of molds having such a constitution are prepared. Softened glass is pressed between the surface protective films of the paired molds, so that optical glass elements are molded.
摘要:
Disclosed herein is a micro fluid transferring system that comprises a micropump having a chamber, a first fluid transferring portion connected to the chamber, and a second fluid transferring portion connected to the chamber. This system is characterized in that at least one of the first and second fluid transferring portions comprises a pressure absorbing section for absorbing or alleviating a liquid vibrational pressure therein.
摘要:
This invention provides a manufacturing method of a molded glass object in which generation of defects such as dents and wrinkles due to catching of ambient gas between a molten glass drop and an upper mold is restrained in the case of manufacturing a molded glass object by press-molding of a dropped molten glass drop, and a manufacturing method of an upper mold for the manufacturing method of a molded grass object. A molten glass drop is press-molded by use of an upper mold having been subjected to a roughening treatment to roughen the surface on the molding surface to compress the molten glass drop.
摘要:
Disclosed herein is a micro fluid transferring system that comprises a micropump having a chamber, a first fluid transferring portion connected to the chamber, and a second fluid transferring portion connected to the chamber. This system is characterized in that at least one of the first and second fluid transferring portions comprises a pressure absorbing section for absorbing or alleviating a liquid vibrational pressure therein.
摘要:
Disclosed herewith is a microchip having a micromixer therein. The mixromixer employs a mixing or extracting structure having (1) a first flow pass provided at a first level of the microchip; (2) a second flow pass provided at a second level of the microchip, which is different from the first level; (3) a third flow pass having a plurality of sub flow passes separately layered at the first level and each having a first end and second end thereof, each sub flow pass being connected to one of the first and second flow passes at the first end thereof; and (4) a fourth flow pass, provided at the first level, connected to the second ends of the sub flow passes so that, at least connecting portions between the fourth flow pass and the sub flow passes of the third flow pass, an extending direction of the fourth flow pass is substantially identical to those of the sub flow passes. By allowing the first liquid to flow from the first flow pass to the fourth flow pass through the third flow pass while the second liquid to flow from the second flow pass to the fourth flow pass through the third flow pass, the first and second liquids are mixed at the fourth flow pass.
摘要:
The present invention relates to a thin-layer component having a thin layer of (100)-oriented platinum or the other metals in Group VIII, which is formed on amorphous silicon dioxide, and further relates to a thin-layer producing system for producing such thin-layer components, the thin-layer producing system being a sputtering system wherein an auxiliary electrode is provided between two electrodes.