摘要:
A back-surface-incidence semiconductor light element includes: a semiconductor substrate of a first conductivity type; a first semiconductor layer of a first conductivity type on the semiconductor substrate; a light absorbing layer on the first semiconductor layer; a second semiconductor layer on the light absorbing layer; and an impurity diffusion region of a second conductivity type in a portion of the second semiconductor layer. A region including a p-n junction between the first semiconductor layer and the impurity diffusion region, and extending through the light absorbing layer, is a light detecting portion that detects light incident on a back surface of the semiconductor substrate. A groove in the back surface of the semiconductor substrate surrounds the light detecting portion, as viewed in plan.
摘要:
A method of manufacturing an optical fiber, comprises applying a UV cured resin to an outer circumference of a running glass optical fiber, forming an accompanying flow composed of an inert gas near a surface of the resin by passing the glass optical fiber immediately after having the resin being applied through an atmosphere of the inert gas, and forming a coating by irradiating the resin coated with the accompanying flow with ultraviolet ray to cure the resin while the glass optical fiber accompanied by the accompanying flow is passed through a UV transmission tube to which a gas containing oxygen is supplied.
摘要:
There is provided an electronic document print system comprising an electronic document generation apparatus and a print control apparatus. The print control apparatus included an identification information storage unit that stores output destination identification information corresponding to the print control apparatus, and a control unit that extracts output destination identification information from an obtained electronic document, causes a printing apparatus to print content data in the electronic document if the extracted output destination identification information matches the output destination identification information corresponding to the print control apparatus stored in the identification information storage unit, and performs erroneous transmission notification processing using erroneous transmission guidance data in the electronic document if no match is obtained.
摘要:
A dynamic, preventive, centralized printer resource management system provides dynamic, preventive monitoring of printer resources and centralization of the supervision of printer resources in a print management system. The system dynamically monitors the printer resources and delivers warning messages to system administrators, end users, and/or vendors when a printer resource falls below a predetermined threshold. Further, the printer resources can be monitored from a single, centralized location, such as a control panel proximate the system administrator. Notification of printer resource warnings can also be electronically delivered to end users, system operators, and/or vendors. Thus, the printer resource deficiency can be investigated by the administrator, user, or vendor, and resolved prior to the printer resource becoming entirely exhausted.
摘要:
An electrode structure containing an insoluble metal electrode which is used as an electrode for the electrolysis of an acidic aqueous solution under a high current density is disclosed. An elastic electroconductive material, containing an expanded metal, having formed thereon a corrosion-resistant electroconductive coating, is disposed between an electroconductive electrode substrate and an electrode having on the surface thereof a coating of an electrode material. They are fixed by a detachable fixing device from the surface of the electrode. The electrode can be exchanged when fixing the electrode structure to the electrolytic cell.
摘要:
The present invention relates to a method of producing an electrolytic electrode containing the following steps: forming a lead plating layer on the surface of a metallic core material by using a lead electrolytic plating bath, where the metallic core material is the cathode; forming an .alpha.-lead dioxide layer on the lead plating layer by electrolysis using an alkaline bath containing a lead ion and using the core material as the anode; and forming a .beta.-lead dioxide layer on the .alpha.-lead dioxide layer by electrolysis using an aqueous lead nitrate solution and using the core material as the anode. The electrolytic electrode produced by the foregoing method is capable of electrolysis in an aqueous solution, in particular, in an aqueous corrosive solution containing fluorine ions.
摘要:
The present invention relates to an electrolytic electrode comprising a metallic core material, a lead plating layer formed on the surface of the metallic core material, an .alpha.-lead dioxide layer formed on the surface of the lead plating layer, and a .beta.-lead dioxide layer formed on the .alpha.-lead dioxide layer. The present invention also relates to methods for the preparation thereof.
摘要:
An electrolytic electrode comprising a substrate made of a valve metal, an intermediate layer formed on a surface of the substrate containing an oxide of at least one metal selected from the group consisting of niobium, tantalum, titanium, and zirconium, and a coating layer formed on the intermediate layer containing an iridium-tantalum mixed oxide and platinum. In separate embodiments of the invention, the intermediate layer may contain platinum and/or a stabilizing layer formed on the coating layer containing an oxide of at least one metal selected from the group consisting of tin, titanium, tantalum, zirconium, and niobium.
摘要:
An optical amplifier apparatus which amplifies a signal light in an optical fiber includes an optical fiber having a core containing a rare-earth dopant element and an excitation light source including a semiconductor laser for generating excited light and an optical amplifier utilizing a semiconductor laser for amplifying the excited light and supplying the amplified excited light to the optical fiber.
摘要:
A lens controls the chromatic aberration of an objective lens for practical use in an optical disk system. The lens has first and second aspherical surfaces each providing a positive refractive power for focusing a light through a transparent plate and satisfies a condition: ##EQU1## where f.sub.L =focal length of the lens, d.sub.c =thickness of the transparent plate, n.sub.c =refractive index of the transparent plate, .lambda.=center wavelength of the light, NA=numerical apperture of the lens, .nu..sub.L =local dispersion of the lens, and .nu..sub.c =local dispersion of the transparent plate. The local dispersion of each element is expressed by: ##EQU2## where n.sub.80 is refractive index at a center wavelength .lambda. nm, n.sub..lambda. +5 a refractive index at .lambda.+5 nm, and n.sub..lambda. -5 a refractive index at .lambda.-5 nm.