Abstract: A semiconductor device includes a semiconductor element having main electrodes on opposite faces opposite in a predetermined direction, a substrate, and a sealing body containing resin. The substrate has an insulating base member, a front-face metal body on a front face of the insulating base member and a back-face metal body on a back face of the insulating base member, the front-face metal body being connected to at least one of the main electrodes of the semiconductor element. The insulating base member and the sealing body satisfy a relationship of Tgs?Tgi and a relationship of ?i??s, in which Tgi is a glass transition point of the insulating base member, ?i is a linear expansion coefficient of the insulating base member, Tgs is a glass transition point of the sealing body, and as is a linear expansion coefficient of the sealing body.

Abstract: A field effect transistor includes a substrate, a material layer on a surface of the substrate and including a two-dimensional material or carbon nanotubes, and particles interposed between the substrate and the material layer.

Abstract: The present invention has revealed that an antiviral agent containing a serine protease such as subtilisin, nattokinase, and trypsin has an effect of inactivating non-envelope type viruses, and that combining such an antiviral agent containing a serine protease with a cationic polymer enhances the inactivation effect of the antiviral agent against non-envelope type viruses. As a result, an antiviral agent that is highly safe, that has a high virus inactivation ability, and that contains a component that is inexpensive in terms the manufacturing cost and a cationic polymer, was discovered.

Abstract: A fiber laser oscillator (1; 100) has an optical fiber (10), a pumping light emitting device (30), a light guide member (40; 140), and a core member (50). The core member (50) is configured to have a flat plate-shaped, cylindrical, annular, or hollow spherical configuration. The optical fiber (10) is wound around the surface of the core member (50) or partially embedded within the surface of the core member (50). The light guide member (40; 140) has a light receiving surface (40a) and an opposite surface (40b) opposing the receiving surface. The opposite surface (40b) of the light guide member (40; 140) contacts the circumferential surface of the core member (50). Light (Lin) emitted from the light emitting device (30) travels (i.e., pumping light (Lin)) travels within the core member (50) along the circumference of the core member (50) and excites the core portion (12) of the optical fiber (10).

Abstract: A fiber laser oscillator 1 is provided with a pumping light source 30 for emitting pumping beams Lin; beam condensing means (light duct) 50 for condensing the pumping beams Lin emitted from the pumping light source 30; and a laser oscillation optical fiber 10 for receiving the pumping beams Lin condensed by the beam condensing means 50 to generate an output laser beam Lout. The beam condensing means 50 has an incident surface Min for making the pumping beams Lin from the pumping light source 30 incident thereon and an emission surface Mout for emitting the pumping beams Lin therefrom. The emission surface Mout is made smaller in area than the incident surface Min. Further, the area of the emission surface Mout is made to be the same as or smaller than that of one end surface of the laser oscillation optical fiber 10.

Abstract: A fiber laser oscillator (1; 100) has an optical fiber (10), a pumping light emitting device (30), a light guide member (40; 140), and a core member (50). The core member (50) is configured to have a flat plate-shaped, cylindrical, annular, or hollow spherical configuration. The optical fiber (10) is wound around the surface of the core member (50) or partially embedded within the surface of the core member (50). The light guide member (40; 140) has a light receiving surface (40a) and an opposite surface (40b) opposing the receiving surface. The opposite surface (40b) of the light guide member (40; 140) contacts the circumferential surface of the core member (50). Light (Lin) emitted from the light emitting device (30) travels (i.e., pumping light (Lin)) travels within the core member (50) along the circumference of the core member (50) and excites the core portion (12) of the optical fiber (10).

Abstract: Optical waveguides, lens arrays and laser collecting devices are disclosed. The optical waveguide is formed with an output surface which is made smaller in dimension in a fast axis direction than an input surface. The waveguide collects in the fast axis direction plural laser beams output from plural laser emitting parts arranged in the fast axis direction and outputs from the output surface. The entrance surface of the optical waveguide is provided with first lenses to correspond respectively to the plural laser emitting parts. Each of the first lenses is located to be offset first predetermined distances from a corresponding one of the laser emitting parts in the beam traveling direction and in said fast axis direction, and the first predetermined distances are determined for each of the first lens in taking into account the focal length of each first lens and an angle which each first lens makes with the output surface of the waveguide.

Abstract: The object of the invention is to provide a diphenylsquarylium compound which has a sharp minimum value within the wavelength range of from 550 to 610 nm in the light transmittance curve and from which a filter causing no reduction of brightness of the visual field can be obtained when used by containing in a filter for display, and a filter for display which contains this diphenylsquarylium compound. Constructions of the invention are a diphenylsquarylium compound represented by the following general formula (I) and a filter for display which contains this diphenylsquarylium compound.

Abstract: A filter for an electronic display having at least one minimum value of transmittance in a visible light wavelength range of 400-700 nm, if transmittances (%) a, b and c at 435, 545 and 610 nm are compared, the difference between the maximum and minimum values of transmittance (%) is restricted to not more than 10, so that even if external light is a fluorescent lamp in which large emission peaks are present at 435, 545 and 610 nm, such as F10 and F6, the balance of the emission spectrum of the fluorescent lamp will not be lost due to the filter, thereby reducing unnatural coloring of the filter itself, which is installed at the front side of the electronic display, due to external light.

Abstract: Optical waveguides, lens arrays and laser collecting devices are disclosed. The optical waveguide is formed with an output surface which is made smaller in dimension in a fast axis direction than an input surface. The waveguide collects in the fast axis direction plural laser beams output from plural laser emitting parts arranged in the fast axis direction and outputs from the output surface. The entrance surface of the optical waveguide is provided with first lenses to correspond respectively to the plural laser emitting parts. Each of the first lenses is located to be offset first predetermined distances from a corresponding one of the laser emitting parts in the beam traveling direction and in said fast axis direction, and the first predetermined distances are determined for each of the first lens in taking into account the focal length of each first lens and an angle which each first lens makes with the output surface of the waveguide.

Abstract: An olefin resin-based article having good gas barrier properties is disclosed, comprising an .alpha.,.beta.-ethylenically unsaturated carboxylic acid-grafted polyolefin (e.g., maleic anhydride-grafted polypropylene) having formed thereon an inorganic oxide deposite film, wherein the grafted polyolefin has an unsaturated carboxylic acid unit concentration of from 0.01 to 10% by weight, with or without an anchor coat being provided between the grafted polyolefin and the inorganic oxide film. The article suffers from no reduction in gas barrier properties even when heat or stress is applied thereto and is therefore useful as a wrapping or packaging material in the production of pouch-packed foods and IC packages.

Abstract: An olefin resin-based article having gas barrier properties, comprising a crystalline olefin copolymer having an inorganic oxide thin film layer formed thereon where the crystalline olefin copolymer comprises ethylene or an .alpha.-olefin having from 3 to 12 carbon atoms and a diene and having a diene unit content of from 0.05 to 20 mol %, wherein the article suffers from no reduction in gas barrier properties even when heat or stress is applied during fabrication or use and is useful as a wrapping or packaging material for making pouch-packed foods or IC packages.