Abstract: A multilayer body for an image display device includes a wiring substrate including a substrate having transparency, and a mesh wiring layer disposed on the substrate; and a dielectric layer stacked on the wiring substrate. The dielectric layer and the substrate have a total thickness of 50 ?m or more and 500 ?m or less.

Abstract: Provided is an edge-light type illumination device capable of increasing luminance directly thereunder and capable of providing anisotropy to the luminance distribution. Light to be emitted from an emission surface (2d) of a light-guide plate (2) fulfills a condition (1) Etotal/Em>2.0 and a condition (2) Etotal(20°,0°)/Etotal(20°,90°)>1.2.

Abstract: A light guide plate has at a bottom surface thereof a recessed strip. The recessed strip has first oblique surfaces and second oblique surfaces, a vertical angle ?1 formed by the first oblique surfaces facing each other is set in a range of 95° to 110° while an apparent vertical angle ?2 formed by the second oblique surfaces facing each other is set in a range of 60° to 75°. When defining one side of each of the first oblique surfaces as a first oblique side and one side of each of the second oblique surfaces as a second oblique side and the total length of the first oblique side and second oblique side as a total oblique side length, the ratio of the oblique side length of the second oblique side to the total oblique side length is set in a range of 40% to 65%.

Abstract: An illumination device of edge light type includes a light emitting unit provided at one side surface of a light guide plate. The light guide plate includes a plurality of recesses having a V-shaped cross-section and provided on a bottom surface in parallel to an X-axis direction at a predetermined pitch and a plurality of protrusions having a lenticular lens shape in the cross-sectional view and provided in parallel to a Y-axis direction at a prearranged pitch. A vertex angle of each of the recesses is defined to reflect the light incident into the light guide plate through an incident end surface by an inclined surface on the recesses of the bottom surface such that emission light emitted from an emission surface has a maximum luminous intensity at an angle between 25 degree to 65 degree with respect to the Z-axis direction.

Abstract: A light guide plate has at a bottom surface thereof a recessed strip. The recessed strip has first oblique surfaces and second oblique surfaces, a vertical angle ?1 formed by the first oblique surfaces facing each other is set in a range of 95° to 110° while an apparent vertical angle ?2 formed by the second oblique surfaces facing each other is set in a range of 60° to 75°. When defining one side of each of the first oblique surfaces as a first oblique side and one side of each of the second oblique surfaces as a second oblique side and the total length of the first oblique side and second oblique side as a total oblique side length, the ratio of the oblique side length of the second oblique side to the total oblique side length is set in a range of 40% to 65%.

Abstract: Light to be emitted from an emission surface of a light-guide plate fulfils a condition (1) Etotal/Em>2.0 and a condition (2) Etotal(20°,0°)=Etotal(20°,90°)>1.2. Here, average intensity of light to be emitted from the emission surface is em and total light intensity of the light to be emitted in a z-axis direction is etotal, the total light intensity etotal(20°,0°) of the light to be emitted is ??Pi(20°,0°)/?? when an angle ? of the light to be emitted relative to a z-axis direction is 20° and an angle ? of the light to be emitted relative to an x-axis direction is 0°, and the total light intensity etotal(20°,90°) of the light to be emitted from the emission surface is ??Pi(20°,90°)/?? when the angle ? of the light to be emitted relative to the z-axis direction is 20° and the angle ? of the light to be emitted relative to the x-axis direction is 90°.

Abstract: A pressure-regulating valve in which the pressure of a functional liquid fed to a primary chamber from a functional liquid feeding means is regulated by opening and closing a valve body, the functional liquid is fed to a secondary chamber, and the functional liquid is fed from the secondary chamber to an inkjet-type functional droplet ejection head; wherein the valve body has a valve body main body that directly opens and closes with respect to a valve seat, the valve body main body being provided to the primary chamber; and a valve holder including a holding part that holds the valve body main body and an actuating shaft that comes in contact with a pressure-receiving membrane, the actuating shaft extending concentrically through the communication flow passage from the holding part; the actuating shaft is formed so as to taper to a point toward the pressure-receiving membrane; and the communication flow passage is formed to have a complementary shape with respect to the actuating shaft.

Abstract: An irradiation device includes: a light source having an amalgam alloy member that is disposed on a part of the inner surface of a light source tube; and a chamber in which the light source is disposed. The chamber includes: a main chamber body; and a first gas inflow port and a first gas outflow port that are formed in the main chamber body. The first gas inflow port and the first gas outflow port are arranged so that the outer surface of the part of the light source tube where the amalgam alloy member is disposed is positioned in a flow path of a gas that flows in through the first gas inflow port and flows out through the first gas outflow port.

Abstract: A pressure-regulating valve for opening and closing, based on atmospheric pressure, a valve body provided to a communication flow passage via which a primary chamber and a secondary chamber communicate inside a valve housing, with the aid of a pressure-receiving membrane that constitutes one surface of the secondary chamber, for regulating the pressure of a liquid fed to the primary chamber via an inflow port, and for feeding the liquid from the secondary chamber via an outflow port; the pressure-regulating valve wherein a cover is provided for allowing action of the pressure-receiving membrane and for covering the pressure-receiving membrane; and the cover has light-blocking properties.

Abstract: An internal wall of a secondary chamber excluding one surface includes a flat wall portion with a secondary-chamber-side opening of the communication flow passage being formed in the center portion thereof; a conforming wall portion with which a diaphragm deformed maximally in the minus direction makes conforming contact, the conforming wall portion being connected to the outside of the flat wall portion and having an outflow opening communicating with an outflow port formed at the bottom of the conforming wall portion; and a flow passage groove extending upward from the flat wall portion to cut into the conforming wall portion.

Abstract: An object of the present invention is to provide a surface light source element configured to enhance projection light from an opening boundary of a supporting frame (12), wherein the projection light is required as a surface light source element, so that the surface light source element makes it possible to clearly illuminate an observation direction even in the case where the surface light source element is made large in size or thin in thickness.

Abstract: The present invention is objected to improve brightness in a front direction in a surface light source element including a light-guiding plate having a primary light source at least one side surface, a reflector and a prism sheet. In the surface light source element using the light-guiding plate (1) including a concave stripe (9) on a bottom surface (7) side, in order to emit light in the front direction after passing through the prism sheet of an optical sheet above the light-guiding plate (1), an average angularity R of an inclined surface of the concave stripe (9) to the bottom surface of the light-guiding plate is within the range described by the following condition, R?[?/2?sin?1(0.422/nLGP)]/2 R?sin?1(1/nLGP)?sin?1(0.643/nLGP) R: the average angularity (radian) to the bottom surface of the light-guiding plate (1), nLGP: a refractive index of a base material of the light guiding plate (1).

Abstract: A light guide plate capable of omitting use of a directional sheet such as a prism sheet as much as possible and ensuring a viewing angle without decreasing brightness in the vertical direction. A light guide plate 1 is used for an edge-light surface illuminant device 10. The light guide plate comprises an emission plane 6, a bottom plane 7 facing the emission plane 6 and an incident end face 8 which enters light emitted from a primary light source 4 provided in a side face between the emission plane 6 and the bottom plane 7. Each of the emission plane 6 and the bottom plane 7 comprises a pattern having convex portions and/or concave portions formed at predetermined pitches. The pattern formed on the emission plane 6 is orthogonal to the incident end face 8 and also the pattern formed on the bottom plane 6 is parallel to the incident end face 8. The emission plane 6 or the bottom plane 7 comprises a trapezoidal convex portion 2 and a trapezoidal concave portion 3 which are alternately arranged.

Abstract: An object of the present invention is to provide a surface light source element configured to enhance projection light from an opening boundary of a supporting frame (12), wherein the projection light is required as a surface light source element, so that the surface light source element makes it possible to clearly illuminate an observation direction even in the case where the surface light source element is made large in size or thin in thickness.

Abstract: A pressure-regulating valve for opening and closing, based on atmospheric pressure, a valve body provided to a communication flow passage via which a primary chamber and a secondary chamber communicate inside a valve housing, with the aid of a pressure-receiving membrane that constitutes one surface of the secondary chamber, for regulating the pressure of a liquid fed to the primary chamber via an inflow port, and for feeding the liquid from the secondary chamber via an outflow port; the pressure-regulating valve wherein a cover is provided for allowing action of the pressure-receiving membrane and for covering the pressure-receiving membrane; and the cover has light-blocking properties.

Abstract: An internal wall of a secondary chamber excluding one surface includes a flat wall portion with a secondary-chamber-side opening of the communication flow passage being formed in the center portion thereof; a conforming wall portion with which a diaphragm deformed maximally in the minus direction makes conforming contact, the conforming wall portion being connected to the outside of the flat wall portion and having an outflow opening communicating with an outflow port formed at the bottom of the conforming wall portion; and a flow passage groove extending upward from the flat wall portion to cut into the conforming wall portion.

Abstract: A pressure-regulating valve in which the pressure of a functional liquid fed to a primary chamber from a functional liquid feeding means is regulated by opening and closing a valve body, the functional liquid is fed to a secondary chamber, and the functional liquid is fed from the secondary chamber to an inkjet-type functional droplet ejection head; wherein the valve body has a valve body main body that directly opens and closes with respect to a valve seat, the valve body main body being provided to the primary chamber; and a valve holder including a holding part that holds the valve body main body and an actuating shaft that comes in contact with a pressure-receiving membrane, the actuating shaft extending concentrically through the communication flow passage from the holding part; the actuating shaft is formed so as to taper to a point toward the pressure-receiving membrane; and the communication flow passage is formed to have a complementary shape with respect to the actuating shaft.

Abstract: This invention provides a methyl methacrylate resin light guide for use in a surface light source device. The methyl methacrylate resin light guide can reduce the occurrence of dark lines and can improve the screen image quality of a surface light source device. The light guide characterized by including a methyl methacrylate resin and fine particles. Herein, not less than 0.01 parts by mass and not more than 0.5 parts by mass of the fine particles are dispersed in 100 parts by mass of the methyl methacrylate resin. In addition, the absolute value of a difference in refractive index between the fine resin particles and the methyl methacrylate resin is not less than 0.001 and not more than 0.02, the fine resin particles have an average particle size of not less than 1 ?m and not more than 10 ?m.

Abstract: This invention provides a methyl methacrylate resin light guide for use in a surface light source device. The methyl methacrylate resin light guide can reduce the occurrence of dark lines and can improve the screen image quality of a surface light source device. The light guide characterized by including a methyl methacrylate resin and fine particles. Herein, not less than 0.01 parts by mass and not more than 0.5 parts by mass of the fine particles are dispersed in 100 parts by mass of the methyl methacrylate resin. In addition, the absolute value of a difference in refractive index between the fine resin particles and the methyl methacrylate resin is not less than 0.001 and not more than 0.02, the fine resin particles have an average particle size of not less than 1 ?m and not more than 10 ?m.

Abstract: A light guide plate capable of omitting use of a directional sheet such as a prism sheet as much as possible and ensuring a viewing angle without decreasing brightness in the vertical direction. A light guide plate 1 is used for an edge-light surface illuminant device 10. The light guide plate comprises an emission plane 6, a bottom plane 7 facing the emission plane 6 and an incident end face 8 which enters light emitted from a primary light source 4 provided in a side face between the emission plane 6 and the bottom plane 7. Each of the emission plane 6 and the bottom plane 7 comprises a pattern having convex portions and/or concave portions formed at predetermined pitches. The pattern formed on the emission plane 6 is orthogonal to the incident end face 8 and also the pattern formed on the bottom plane 6 is parallel to the incident end face 8. The emission plane 6 or the bottom plane 7 comprises a trapezoidal convex portion 2 and a trapezoidal concave portion 3 which are alternately arranged.