Abstract: A pressure sensor includes: a pressure sensor element; a metal adapter integrally attached to the pressure sensor element and defining therein a hole through which a pressure of a fluid to be measured is introduced to the pressure sensor element; a metal fitting member provided with a housing recess receiving the adapter and connectable to a connected member; and an operation member pressing a valve provided to the connected member and defining a communicating path through which a flow path, in which the pressure of the fluid to be measured is introduced, is in communication with the hole of the adapter. The adapter and the fitting member are connected to each other by plastic deformation. The operation member is a synthetic resin member including: a contact portion brought into contact with the adapter; and a pressing portion provided on a side opposite to the contact portion to press the valve.

Abstract: A pressure sensor includes: a pressure sensor element; an adapter integrally attached to the pressure sensor element and defining therein a hole where a pressure of a fluid to be measured is introduced to the pressure sensor element; a fitting member having a housing recess housing the adapter and connectable to a connected member; and a pressing member pressing a valve of the connected member and defining a communicating path through which a flow path where the pressure of the fluid is introduced is in communication with the hole of the adapter. The fitting member is made of a synthetic resin. An O-ring is interposed between a circumferential surface of the adapter and the fitting member. The adapter is a synthetic resin member, and includes a contact portion brought into contact with the adapter and a pressing portion pressing the valve. The pressing member is welded to the fitting member.

Abstract: An antireflection structure is disclosed which is capable of enhancing designability by adjusting a reflection characteristic of a Moth-eye structure. A display device using the antireflection structure is also disclosed. The antireflection structure according to an embodiment includes a resin base member including, on a surface, an uneven structure in which a height from a bottom part to a top part is equal to or smaller than a visible light wavelength, and a resin layer covering at least a part of the uneven structure, the resin layer covering the bottom part of the uneven structure more thickly than the top part of the uneven structure.

Abstract: A display device is provided in which reduction of reflected light is realized. Also a multilayer substrate is provided in which light reflectance is reduced even when the substrate has a plurality of layers that differ in refractive index from each other. In the display device of one embodiment, the reflectance of light reflected by the internal structure, of light incident on the internal structure through a display screen, is less than 1.0%. The multilayer substrate of one embodiment includes a first layer and a second layer disposed adjacently to the first layer. The refractive index of the second layer varies continuously from an interface where the second layer is adjacent to the first layer in a direction from the first layer, with the variation being started at a value of the refractive index at the interface where the first layer is adjacent to the second layer.

Abstract: An antireflection film of the present invention includes a plurality of first raised portions, each of which has a two-dimensional size of not less than 1 ?m and less than 100 ?m when seen in a direction normal to the film, and a plurality of second raised portions, each of which has a two-dimensional size of not less than 10 nm and less than 500 nm when seen in a direction normal to the film. In at least one embodiment, the antireflection film has a first surface shape or a second surface shape that is inverse to the first surface shape relative to a film surface. In the first surface shape, the second raised portions are provided on the first raised portions and between the plurality of first raised portions, and the elevation angle ? of a surface of the first raised portions relative to the film surface is about 90° or more. The antireflection film of the present invention has a more excellent antiglare function than conventional ones.

Abstract: At least one embodiment of the present invention provides a roller imprinter that allows easy replacement of a transfer roller, and a method of producing an imprinted sheet. In at least one embodiment, a roller imprinter is disclosed for transferring a pattern on a surface of a transfer roller to a surface of a workpiece sheet through rotation of the transfer roller, the roller imprinter including an axis shaft or rotation for the transfer roller, and the axis of the shaft being non-coincident with the rotation axis of the transfer roller.

Abstract: A roller nanoimprint apparatus is disclosed which is capable of preventing a workpiece film with nanostructures having been transferred from the mold roller from being uneven in thickness and allowing easy replacement of the mold roller. At least one embodiment of the present invention is directed to a roller nanoimprint apparatus including a mold roller and continuously transferring nanosized protrusions to a surface of a workpiece film by rotating the mold roller, wherein the mold roller is a cylindrical body having an outer circumference surface with nanosized recesses formed thereon, the roller nanoimprint apparatus further includes a fluid container having an elastic film inflatable by injecting fluid into the container, the fluid container being arranged in a region defined by an inner circumference surface of the mold roller, the mold roller is mounted or demounted when the elastic film is shrunken, and the mold roller is supported from the inside when the elastic film is inflated.

Abstract: To provide an optical element having excellent adhesion to a lamination film, a roller nanoimprint apparatus, and a production method of a mold roller are disclosed. In at least one embodiment of the present invention, an optical element includes a nanostructure film including recesses and protrusions in nanometer size formed continuously on a surface of the nanostructure film and a lamination film laminated on the nanostructure film. The nanostructure film includes a nanostructure-free region free from the recesses and protrusions in nanometer size in both ends along a longitudinal direction of the nanostructure film.

Abstract: A laminate includes a base and a moth-eye film in a combined manner. The laminate can be easily bonded to a polarizer without performing a saponification treatment and can provide pencil hardness and scratch resistance without disposing a hard coat layer. The laminate of an embodiment of the present invention is directed to a laminate including an anti-reflection film including a plurality of protruding portions arranged so that a width between peaks of adjacent protruding portions is less than or equal to a wavelength of visible light and an acrylic base on which the anti-reflection film is placed. In the laminate, the anti-reflection film and the acrylic base are directly bonded to each other.

Abstract: A liquid tank, a viewing device for under-liquid observation, and an optical film are disclosed, each excellent in visibility and durability and being easy to clean. In at least one embodiment of the present invention is directed to a liquid tank having a transparent wall, including, on an internal surface of the wall, a first moth-eye layer having a moth-eye structure, and a protective layer covering the moth-eye structure, in this order from the wall side, and preferably, further including, on an external surface of the wall, a second moth-eye layer having a moth-eye structure, and the second moth-eye layer being disposed in a region facing the first moth-eye layer.

Abstract: A display device is provided in which reduction of reflected light is realized. Also a multilayer substrate is provided in which light reflectance is reduced even when the substrate has a plurality of layers that differ in refractive index from each other. In the display device of one embodiment, the reflectance of light reflected by the internal structure, of light incident on the internal structure through a display screen, is less than 1.0%. The multilayer substrate of one embodiment includes a first layer and a second layer disposed adjacently to the first layer. The refractive index of the second layer varies continuously from an interface where the second layer is adjacent to the first layer in a direction from the first layer, with the variation being started at a value of the refractive index at the interface where the first layer is adjacent to the second layer.

Abstract: A liquid tank, a viewing device for under-liquid observation, and an optical film are disclosed, each excellent in visibility and durability and being easy to clean. In at least one embodiment of the present invention is directed to a liquid tank having a transparent wall, including, on an internal surface of the wall, a first moth-eye layer having a moth-eye structure, and a protective layer covering the moth-eye structure, in this order from the wall side, and preferably, further including, on an external surface of the wall, a second moth-eye layer having a moth-eye structure, and the second moth-eye layer being disposed in a region facing the first moth-eye layer.

Abstract: The present invention provides a display device having excellently well-designed appearance, which is characterized in that the region where the display panel disposed is hardly visible when the display is off, and an image looks as if it is popping out on the protective plate when the display is on. In at least one example embodiment, the present invention is a display device, including: a display panel; and a protective plate disposed at an observation surface side of the display panel, wherein the display device further comprises a light-transmitting portion at an observation surface side of the display panel, and the protective plate includes, when observed from a normal line direction of its main surface, a circularly polarizing plate which covers both of the light-transmitting portion and a region around the light-transmitting portion.

Abstract: The present invention provides a complex birefringent medium, which has the so-called inverse wavelength dispersibility, that is, a wavelength dispersibility capable of giving an optimum phase difference to a light of a wide visible wavelength range, has a wide viewing angle, can be produced by a convenient method and is excellent in a degree of adjusting freedom of inverse wavelength dispersibility and in mass productivity, a polarizing plate and a liquid crystal display device.

Abstract: At least one embodiment of the present invention provides a roller imprinter that allows easy replacement of a transfer roller, and a method of producing an imprinted sheet. In at least one embodiment, a roller imprinter is disclosed for transferring a pattern on a surface of a transfer roller to a surface of a workpiece sheet through rotation of the transfer roller, the roller imprinter including an axis shaft or rotation for the transfer roller, and the axis of the shaft being non-coincident with the rotation axis of the transfer roller.

Abstract: The present invention provides a roller nanoimprint apparatus capable of preventing a workpiece film with nanostructures having been transferred from the mold roller from being uneven in thickness and allowing easy replacement of the mold roller. The present invention is a roller nanoimprint apparatus including a mold roller and continuously transferring nanosized protrusions to a surface of a workpiece film by rotating the mold roller, wherein the mold roller is a cylindrical body, having an outer circumference surface with nanosized recesses formed thereon, the roller nanoimprint apparatus further includes a fluid container having an elastic film inflatable by injecting fluid into the container, the fluid container being arranged in a region defined by an inner circumference surface of the mold roller, the mold roller is mounted or demounted when the elastic film is shrunken, and the mold roller is supported from the inside when the elastic film is inflated.

Abstract: An antireflection film of the present invention includes a plurality of first raised portions, each of which has a two-dimensional size of not less than 1 ?m and less than 100 ?m when seen in a direction normal to the film, and a plurality of second raised portions, each of which has a two-dimensional size of not less than 10 nm and less than 500 nm when seen in a direction normal to the film. In at least one embodiment, the antireflection film has a first surface shape or a second surface shape that is inverse to the first surface shape relative to a film surface. In the first surface shape, the second raised portions are provided on the first raised portions and between the plurality of first raised portions, and the elevation angle ? of a surface of the first raised portions relative to the film surface is about 90° or more. The antireflection film of the present invention has a more excellent antiglare function than conventional ones.

Abstract: A TN liquid crystal display device (1) includes a polarizing plate (4a), a liquid crystal panel (100), and a polarizing plate (4b) in an order from a viewer side, in which absorption axes (4? and 4?) of the polarizing plates (4a and 4b) are set to be at an angle of approximately 45 degrees to respective rubbing directions (6a and 6b) of a first substrate (2a) and a second substrate (2b), and the absorption axes (4? and 4?) are arranged so as to be perpendicular to each other. Further, for example, a biaxial phase plate (5a) is provided at least between the substrate (2a) and the polarizing plate (4a) so that an in-plane slow axis (5?) is set to be at an angle of approximately 90 degrees to the absorption axis (4?) of the polarizing plate (4a). This configuration makes it possible to realize, at a low cost, a technique to concurrently improve (i) a viewing angle display characteristic and (ii) use efficiency of material members of the TN display liquid crystal display device.

Abstract: At least one embodiment of the present invention provides a roller imprinter that allows easy replacement of a transfer roller, and a method of producing an imprinted sheet. IN at least one embodiment, a roller imprinter is disclosed for transferring a pattern on a surface of a transfer roller to a surface of a workpiece sheet through rotation of the transfer roller, the roller imprinter including an axis shaft of rotation for the transfer roller, and the axis of the shaft being non-coincident with the rotation axis of the transfer roller.

Abstract: A display device of at least one embodiment of the present invention includes a display panel; an optical plate placed on a viewer side of the display panel with the intervention of an air layer; and an antireflection layer placed on a viewer side of the optical plate, the antireflection layer having a motheye structure over its surface. The optical plate includes a plastic layer configured to transmit visible light, a quarter-wave layer placed on a viewer side of the plastic layer, and a polarizing layer placed on a viewer side of the quarter-wave layer, the polarizing layer being configured to transmit a linear polarization. The display device is more suitable to mobile applications than the conventional devices.