Abstract: A frequency selective reflector including a reflecting member reflecting the electromagnetic waves; and a dielectric layer that: is disposed at an incident side of the electromagnetic waves with respect to the reflecting member; includes a concave and convex structure in which a plurality of a unit structure including a thickness distribution of increasing thickness in a predetermined direction is arranged; and transmits the electromagnetic waves, wherein the unit structure of the dielectric layer includes a plurality of cell regions of which thickness differs from one another; the dielectric layer includes, as the unit structure, at least a first unit structure including three or more of the cell regions of which thickness differs from one another; and a reflection direction of the electromagnetic waves is controlled by controlling a relative reflection phase distribution of the electromagnetic waves by the thickness distribution of the dielectric layer.

Abstract: A water-based ink composition for an aqueous ballpoint pen that maintains smooth writing feel even when stored for a long time with a pen tip facing downward and is excellent in suppressing abrasion of a ball receiving seat is provided. Such an ink composition for an aqueous ballpoint pen includes an ink composition for an aqueous ballpoint pen, the ink composition comprising at least a coloring material; fine particles having a new Mohs hardness of 3 or greater and an average particle size of 30 ?m or less; a polyoxyethylene polycyclic phenyl-based surfactant; and a water-soluble solvent.

Abstract: A fastener tape includes a first side-edge portion including a core cord and a plurality of first ground warp yarns; and a tape main portion adjacently positioned to the first side-edge portion and including a plurality of second ground warp yarns. A weft yarn and every ground warp yarn of the fastener tape are yarns including plant-derived resin. The first ground warp yarn is FDY (Fully Drawn Yarn) and the second ground warp yarn is DTY (Drawn Textured Yarn) and in accordance with this difference in yarn type, a thermal shrinkage ratio of the first ground warp yarn is greater than a thermal shrinkage ratio of the second ground warp yarn.

Abstract: Slide fastener coupled to flexible member includes: a pair of fastener stringers, each of the fastener stringers having a fastener tape provided with a first side-edge portion and a second side-edge portion which extend in an elongation direction of the fastener tape, and a fastener element provided on the first side-edge portion side; and one or more sliders for opening and closing the pair of fastener stringers. The fastener tape includes a first tape region onto which a flap of the flexible member is overlaid and a second tape region positioned between the first tape region and the second side-edge portion. The flap is interposed between the first tape region and the second tape region.

Abstract: Fastener tape is woven from a weft thread and warp threads both of which are threads with a main attribute. The fastener tape includes: first and second side-edges extending along an elongation direction of the fastener tape to define a fastener tape width; and a tape main portion interposed between the first and second side-edges. The tape main portion includes an identification region woven by plural warp threads and the weft thread interlaced with one another, the identification region having an identification region width which is a partial width of an entire width of the fastener tape width and is a width in accordance with a number of the plural warp threads. Structure of the identification region is configured to allow identification that the weft thread and the warp threads are with the main attribute and/or to allow identification of a sub-attribute subdivided from the main attribute.

Abstract: An oil circulation system of an internal combustion engine comprises a first oil pan and second oil pan, first oil supplied parts supplied with oil stored in the first oil pan, second oil supplied parts supplied with oil stored in the second oil pan, and a heating part. The heating part has oil paths through which oil flows and heats the oil flowing through the oil paths. The oil circulation system comprises a first circulation path circulating oil through the first oil pan, heating part, and first oil supplied parts, and a second circulation path circulating oil between the second oil pan and the second oil supplied parts.

Abstract: A touch panel sensor includes a substrate and an electrode having a detection electrode and an extraction electrode connected to a detection electrode. The electrode, in any cross-section thereof in the thickness direction, includes a metal layer which occupies at least part of the cross-section. The metal layer of the detection electrode and the metal layer of the extraction electrode are formed integrally at a joint between the detection electrode and the extraction electrode. The detection electrode includes a conductive mesh having conductive wire arranged in a mesh pattern, the conductive wire having a height of not less than 0.2 ?m and not more than 2 ?m and a width of not less than 1 ?m and not more than 5 ?m. The conductive wire of the conductive mesh each have a base surface on the substrate side, and a flat top surface located opposite to the base surface.

Abstract: Slide fastener coupled to flexible member includes: a pair of fastener stringers, each of the fastener stringers having a fastener tape provided with a first side-edge portion and a second side-edge portion which extend in an elongation direction of the fastener tape, and a fastener element provided on the first side-edge portion side; and one or more sliders for opening and closing the pair of fastener stringers. The fastener tape includes a first tape region onto which a flap of the flexible member is overlaid and a second tape region positioned between the first tape region and the second side-edge portion. The flap is interposed between the first tape region and the second tape region.

Abstract: A diffractive optical element and a light irradiation device which have high optical utilization efficiency, in which, even if the incidence angle of light deviates, the influence on diffracted light is small and desired diffracted light can be stably obtained, and which have little unevenness in diffracted light. A diffractive optical element is provided with a diffractive layer having in a sectional shape a high refractive index part in which a plurality of protruding portions are arranged side by side, and a low refractive index part and including a recessed section formed at least between the protruding portions. The protruding portion has a multistep shape provided with a plurality of step areas having different heights on at least one side of a cross-section thereof, and the cross-section of the protruding portion is at least partially provided with an inclined portion.

Abstract: A diffractive optical element is configured to provide desired diffracted light and is excellent in durability. The diffractive optical element shapes light from a light source, wherein the diffractive optical element is provided with a diffractive layer having a periodic structure having low refractive index portions and high refractive index portions, and the high refractive index portions of the periodic structure include one having an aspect ratio of 2 or more.

Abstract: A touch panel sensor includes a substrate and an electrode having a detection electrode and an extraction electrode connected to a detection electrode. The electrode, in any cross-section thereof in the thickness direction, includes a metal layer which occupies at least part of the cross-section. The metal layer of the detection electrode and the metal layer of the extraction electrode are formed integrally at a joint between the detection electrode and the extraction electrode. The detection electrode includes a conductive mesh having conductive wire arranged in a mesh pattern, the conductive wire having a height of not less than 0.2 ?m and not more than 2 ?m and a width of not less than 1 ?m and not more than 5 ?m. The conductive wire of the conductive mesh each have a base surface on the substrate side, and a flat top surface located opposite to the base surface.

Abstract: A diffractive optical element is configured to provide desired diffracted light and is excellent in durability. The diffractive optical element shapes light from a light source, wherein the diffractive optical element is provided with a diffractive layer having a periodic structure having low refractive index portions and high refractive index portions, and the high refractive index portions of the periodic structure include one having an aspect ratio of 2 or more.

Abstract: The oil circulation system of an internal combustion engine comprises: a high temperature side oil circulation path provided with a high temperature side oil pan, a high temperature side part supplied with oil, and a heating part, and circulating oil among these; a low temperature side oil circulation path provided with a low temperature side oil pan and a low temperature side part supplied with oil, and circulating oil between the low temperature side oil pan and the low temperature side part supplied with oil; an oil transport mechanism transporting oil between the low temperature side oil circulation path and the high temperature side oil circulation path; and a control device configured to control transport of oil by the oil transport mechanism while the internal combustion engine is operating.

Abstract: A touch panel sensor includes a substrate and an electrode having a detection electrode and an extraction electrode connected to a detection electrode. The electrode, in any cross-section thereof in the thickness direction, includes a metal layer which occupies at least part of the cross-section. The metal layer of the detection electrode and the metal layer of the extraction electrode are formed integrally at a joint between the detection electrode and the extraction electrode. The detection electrode includes a conductive mesh having conductive wire arranged in a mesh pattern, the conductive wire having a height of not less than 0.2 ?m and not more than 2 ?m and a width of not less than 1 ?m and not more than 5 ?m. The conductive wire of the conductive mesh each have a base surface on the substrate side, and a flat top surface located opposite to the base surface.

Abstract: A diffractive optical element is configured to provide desired diffracted light and is excellent in durability. The diffractive optical element shapes light from a light source, wherein the diffractive optical element is provided with a diffractive layer having a periodic structure having low refractive index portions and high refractive index portions, and the high refractive index portions of the periodic structure include one having an aspect ratio of 2 or more.

Abstract: A touch panel sensor includes a substrate and an electrode having a detection electrode and an extraction electrode connected to a detection electrode. The electrode, in any cross-section thereof in the thickness direction, includes a metal layer which occupies at least part of the cross-section. The metal layer of the detection electrode and the metal layer of the extraction electrode are formed integrally at a joint between the detection electrode and the extraction electrode. The detection electrode includes a conductive mesh having conductive wire arranged in a mesh pattern, the conductive wire having a height of not less than 0.2 ?m and not more than 2 ?m and a width of not less than 1 ?m and not more than 5 ?m. The conductive wire of the conductive mesh each have a base surface on the substrate side, and a flat top surface located opposite to the base surface.

Abstract: A diffractive optical element and a light irradiation device which have high optical utilization efficiency, in which, even if the incidence angle of light deviates, the influence on diffracted light is small and desired diffracted light can be stably obtained, and which have little unevenness in diffracted light. A diffractive optical element is provided with a diffractive layer having in a sectional shape a high refractive index part in which a plurality of protruding portions are arranged side by side, and a low refractive index part and including a recessed section formed at least between the protruding portions. The protruding portion has a multistep shape provided with a plurality of step areas having different heights on at least one side of a cross-section thereof, and the cross-section of the protruding portion is at least partially provided with an inclined portion.

Abstract: A touch panel sensor includes a substrate and an electrode having a detection electrode and an extraction electrode connected to a detection electrode. The electrode, in any cross-section thereof in the thickness direction, includes a metal layer which occupies at least part of the cross-section. The metal layer of the detection electrode and the metal layer of the extraction electrode are formed integrally at a joint between the detection electrode and the extraction electrode. The detection electrode includes a conductive mesh having conductive wire arranged in a mesh pattern, the conductive wire having a height of not less than 0.2 ?m and not more than 2 ?m and a width of not less than 1 ?m and not more than 5 ?m. The conductive wire of the conductive mesh each have a base surface on the substrate side, and a flat top surface located opposite to the base surface.

Abstract: A diffractive optical element is configured to provide desired diffracted light and is excellent in durability. The diffractive optical element shapes light from a light source, wherein the diffractive optical element is provided with a diffractive layer having a periodic structure having low refractive index portions and high refractive index portions, and the high refractive index portions of the periodic structure include one having an aspect ratio of 2 or more.

Abstract: The oil circulation system of an internal combustion engine comprises: a high temperature side oil circulation path provided with a high temperature side oil pan, a high temperature side part supplied with oil, and a heating part, and circulating oil among these; a low temperature side oil circulation path provided with a low temperature side oil pan and a low temperature side part supplied with oil, and circulating oil between the low temperature side oil pan and the low temperature side part supplied with oil; an oil transport mechanism transporting oil between the low temperature side oil circulation path and the high temperature side oil circulation path; and a control device configured to control transport of oil by the oil transport mechanism while the internal combustion engine is operating.