摘要:
The present invention relates to a method of making an optical fiber product. In particular, this manufacturing method is characterized in that, between a drawing step in which a coated optical fiber comprising a glass fiber and a primary coating layer disposed around the outer periphery of the glass fiber is wound around a reel and a processing step in which the coated optical fiber wound around the reel is rewound around a bobbin, a control step is provided for holding the coated optical fiber wound around the reel in a place with a mean atmospheric temperature T (>0° C.) for at least 30,000/T2 (hr) and, in the case where a coloring layer or the like is disposed around the outer periphery of the coated optical fiber, for at least 30,000/T2 (hr) but not longer than 210,000/T2 (hr). The optical fiber product such as a ribbon-type optical fiber obtained in consequence of this control step, effectively suppressed are increase in transmission loss caused by delamination between the glass fiber and the primary coating layer disposed around its outer periphery, and delamination of the coloring layer disposed around the outer periphery of the coated optical fiber or the like.
摘要:
An optical fiber 1 comprising a glass portion 2 having a core 2a and a cladding 2b, and one or more covering layers 3 formed around the glass portion 2, in which an arrangement form of the covering layer 3 with respect to the glass portion 2 in cross section perpendicular to a longitudinal direction thereof is changed continuously in the longitudinal direction thereof.
摘要:
In a method for manufacturing a multi-stage gear in which no gap is formed between a small-diameter gear and a large-diameter gear, there are included a first step of forming the small-diameter gear on an outer peripheral surface of a workpiece, a second step of forming a large-diameter gear part by plastically deforming an end portion of the workpiece to increase the diameter thereof, and a third step of forming the large-diameter gear by cutting the large-diameter gear part.
摘要:
A rolling apparatus includes a pair of small rolling roller and a large rolling roller which hold a ring with the ring being sandwiched therebetween, and which roll the ring, and a tension roller; a temperature sensor which measures a temperature of the ring before rolling; a storing portion which stores, in advance, a relation between the temperature of the ring and a temperature correction coefficient for correcting a condition for rolling; and a controller which changes the condition for rolling based on the measured temperature of the ring and the stored relation so as to perform rolling processing.
摘要:
A rolling apparatus includes a pair of a small rolling roller and a large rolling roller which hold a ring with the ring being sandwiched therebetween, and which roll the ring, and a tension roller; a temperature sensor which measures a temperature of the ring before rolling; a storing portion which stores, in advance, a relation between the temperature of the ring and a temperature correction coefficient for correcting a condition for rolling; and a controller which changes the condition for rolling based on the measured temperature of the ring and the stored relation so as to perform rolling processing.
摘要:
In a peripheral length adjusting apparatus and a peripheral length adjusting method for an endless metallic ring, an endless metallic ring is wound on plural rollers, and an interval between the plural rollers is enlarged such that the endless metallic ring is stretched while the plural rollers are rotated, whereby the endless metallic ring is plastically deformed and a peripheral length of the endless metallic ring is adjusted to a target peripheral length. In the peripheral length adjusting apparatus and the peripheral length adjusting method, the peripheral length of the endless metallic ring before adjustment is measured, and the peripheral length of the endless metallic ring is adjusted to the target peripheral length by enlarging the interval between the rollers based on the measured peripheral length such that the peripheral length of the endless metallic ring at the time of adjustment is longer than the target peripheral length by a contraction amount due to elastic deformation of the endless metallic ring after adjustment.
摘要:
The present invention relates to An anti-fogging and stain-prevented glass article having an alkali shut-off film and a photocatalytic film in the order laminated on the surface of glass substrate, in which dents and projections having an arithmetical mean roughness (Ra) from 1.5 to 80 nm and mean interval (Sm) of dents and projections from 4 to 300 nm are formed thereon, and to An anti-fogging and stain-prevented glass article having an alkali shut-off film, a photocatalytic film, and a silicon oxide monocomponent equivalent layer or a layer of organosilane including at least one kind of functional group selected from polyalkyleneoxide group, alkyl group, alkenyl group and aryl group in its molecules or its hydrolyzed substance, laminated in the order on the surface of a glass article. The abovementioned anti-fogging and stain-prevented glass article can be used for window glasses of automobiles and buildings, and glasses, etc.
摘要:
Fluorine contained within a photocatalyst layer containing titanium oxide and other metallic oxide semiconductors increases the metallic oxide's photocatalytic activity. The described photocatalyst may be in the form of either film, flake, particulate, or fiber. In addition, it can be used for coating the surface of a base material of various forms, such as sheet, film, flake, particulate, bar, or fiber. When using a base material that has an alkaline-containing glass composition, establishing a fluorine-containing layer, such as a layer of fluorine-containing silicon dioxide and other metallic oxide, between the photocatalyst film and the base material can prevent the deterioration of photocatalytic activity of the photocatalyst layer. The fluorine-containing layer functions as an alkaline barrier that controls the diffusion and migration of alkali metallic ions in the glass fibers, such as Na ions, into the photocatalyst layer. Inorganic fiber- and glass sheet-based photocatalyst bearing materials have an excellent capability to decompose rarefied harmful organic gases, and are suitable for use as interior wall and air filters in super clean enclosed spaces and conveyance spaces for semiconductor production, clean rooms for various other purposes, and office and residential buildings, and for other purposes including air cleaning, antibacterial action, anti-fouling action, and defogging of clear sheets (maintaining hydrophilicity).
摘要:
The in-vehicle display device includes a central information display device 10, an extension device 20, and an individual functional device 30 formed separately from the central information display device 10. The individual functional device 30 includes a storage device for storing application software to execute the function of the central information display device 10. A CPU for executing the application software may be in the central information display device 10, the extension device 20, or the individual functional device 30.
摘要:
An optical fiber 1 comprising a glass portion 2 having a core 2a and a cladding 2b, and one or more covering layers 3 formed around the glass portion 2, in which an arrangement form of the covering layer 3 with respect to the glass portion 2 in cross section perpendicular to a longitudinal direction thereof is changed continuously in the longitudinal direction thereof.