摘要:
An optical element having a substrate and a composite grating pattern formed thereon. The pattern is constituted with two different kinds of grating patterns superimposed on the substrate. When one of the two kinds of grating patterns is formed in a Fresnel lens pattern, a light focusing or collimating function (i.e. a lens function) is implemented. When the other pattern is formed in an equally separated linear grating pattern, the optical element develops the lens function and a function to diffract lights through the linear grating. When one of the two kinds of grating patterns is formed in a Fresnel lens pattern and the other pattern is implemented in an unequally separated linear grating pattern, a lens function to focus lights onto a point and a cylindrical lens function to focus lights in a linear contour are obtained. Consequently, when parallel lights are incident to the optical element, there occurs astigmatism.
摘要:
A grating lens is disclosed in which diffraction efficiency varies in the focusing direction of light on a surface of the lens. Also disclosed is a focusing grating coupler in which the diffraction efficiency of a grating formed on an optical waveguide, which is formed on a substrate, varies in the focusing direction of light.
摘要:
A polyester film includes particles and two kinds of crystalline polyester resins in which a sea-island structure is formed, wherein, if a crystallization temperature of a crystalline polyester resin A that forms a continuous phase or matrix phase in the polyester film is represented by TccA and a crystallization temperature of a crystalline polyester resin B that forms a dispersion phase or domain phase in the polyester film is represented by TccB, expression (1) below is satisfied, and a degree of flatness of the dispersion phase is 3 or more, and 70% or more of a total number of the particles present in the dispersion phase or are in contact with the dispersion phase: TccA−TccB≧5° C. Expression (1).
摘要:
A polyester film has a laminate structure including a polyester layer (layer P1) containing a crystalline polyester and inorganic particles and a polyester layer (layer P2) containing a crystalline polyester, inorganic particles, and an antihydrolysis segment, wherein the content (Wa2) of the inorganic particles in the layer P2 is at least 10 mass % of the layer P2, the difference between the content (Wa2) (mass %) of the inorganic particles in the layer P2 and the content (Wa1) (mass %) of the inorganic particles in the layer P1, Wa2−Wa1, is 5 to 25 mass %, and the content (Wb2) of the antihydrolysis segment in the layer P2 is 0.02 to 1.5 mass % of the layer P2.
摘要:
A biaxially oriented polyester film including a polyester layer (P1 layer) containing a polyester including ethylene terephthalate as a main constituent, a high melting point resin having a melting point TmB1 of not less than 260° C. and not more than 320° C., and inorganic particles, wherein content of the high melting point resin in the P1 layer, WB1, is not less than 2% by mass and not more than 40% by mass based on the P1 layer; in the P1 layer, dispersion phases composed of the high melting point resin are present in the polyester; and average longitudinal length of the dispersion phases is not more than 10,000 nm (10 μm).
摘要:
A slot-loading disc device is provided that, even if an ejection failure occurs due to contact between a disc and peripheral components, can eliminate the ejection failure. The slot-loading disc device (1) comprises: a conveying mechanism (9) for loading a disc (3) through a disc insertion opening (11) to a disc mount (7) and ejecting it from the disc mount (7) to the disc insertion opening (11); an ejection failure detector for detecting an ejection failure in which the ejection to be performed by the conveying mechanism (9) is prevented; and a conveyance controller for, when the ejection failure is detected, performing a back-and-forth control in which the disc (3) is moved back in a loading direction and then conveyed again in an ejection direction.
摘要:
A sensor chip has a metal layer formed on a surface of a substrate, where a plurality of microscopic concave part is formed in a measurement region of the surface of the metal layer. When light of linear polarization is irradiated onto the measurement region, local resonance electric field generates at opposing metal layer surfaces in the concave part. The reflected light thereof is received to measure reflectance. The light of linear polarization is irradiated so that the polarizing surface becomes orthogonal to the longitudinal direction of the concave part.
摘要:
At both ends of a waveguide 43 having a plurality of cores 51, light emitting elements 47 and light receiving elements 49 are disposed so as to face end faces of the cores 51. A switch 44 is overlapped over the waveguide 43. In the switch 44, switching windows 52 each can be switched between a state where light propagating through the core 51 is passed and a state where the light is reflected are arranged in the vertical and horizontal directions, and the switching windows 52 are arranged along the top faces of the cores 51. A test board 45 having a plurality of channels 60 in each of which a metallic thin film 61 is formed is disposed over the switch 44, and receptors 62 are fixed on the metallic thin film 61 in the channels 60. A specimen containing a specific ligand is passed in each of the channels 60.
摘要:
A reflector used for a display device has a plurality of unit reflecting portions. The unit reflecting portions are arranged by repeating arrangement patterns of unit regions. The unit regions have a repetition pitch that is integral times the pitch of pixels of a liquid crystal display and more than 5000 μm. More preferably, the repetition pitch of unit regions is integral times the pitch of pixels of a liquid crystal display and more than 10000 μm.
摘要:
The light emitted from a spot light source (45) is emitted at a linearly extending region by a wedge-like light conductor (47) and deflected by a prism sheet (50). This light is emitted in a direction perpendicular to a light incident surface (44a) of the light conductor plate (44) and has a directivity narrow in a widthwise direction of the light conductor plate (44). The light conductor plate (44) is formed, at its bottom surface, with a multiplicity of diffusion patterns (46) in a rectangular triangular form. The light reflected upon the diffusion pattern (46) is emitted perpendicularly to alight emitting surface (44b) of the light conductor plate (44). At this time, part of the light incident on the diffusion pattern (46) transmits through the diffusion pattern (46) whereby the directivity of emission light is narrowed in a lengthwise direction of the light conductor plate.