Abstract: A measurement device for a light-emitting device includes a light attenuator, a photometric sphere, and a light detector. The light attenuator includes a first surface and a heat dissipator. A first light that is emitted from the first light-emitting device is incident on the first surface. The first surface is configured to absorb a portion of the first light. The heat dissipator is configured to dissipate heat of the first surface. The photometric sphere has an inner surface to reflect the first light reflected by the first surface. The light detector is configured to receive at least a portion of the first light reflected by the inner surface.

Abstract: A white glass container derived from a phase separation phenomenon of a halogen-free glass composition includes a neck portion and a body portion. The glass composition includes as ingredients at least SiO2, P2O5, Al2O3, B2O3, R2O (R?Na or K), MgO, CaO and the like. The neck portion and the body portion respectively have a white multilayer structure formed to successively include a white transparent layer of relatively low white coloration and a white opaque layer of relatively high white coloration from the outer surface side. The contents of P2O5 in the white transparent layer are made smaller than the contents of P2O5 in the white opaque layer.

Abstract: A light-emitting module includes a light emitter including a first semiconductor light-emitting element, a second semiconductor light-emitting element, and a third semiconductor light-emitting element. A first current regulator is to supply the first current to the first semiconductor light-emitting element. The second current regulator is to supply the second current to the second semiconductor light-emitting element. The third current regulator is to supply the third current to the third semiconductor light-emitting element. A control circuit is configured to control at least one of the first current regulator to control the first current, the second current regulator to control the second current, or control the third current regulator to control the third current according to at least one of fluctuation of the first voltage drop, fluctuation of the second voltage drop, or fluctuation of the third voltage drop.

Abstract: A semiconductor laser device includes a semiconductor substrate, a resonator unit formed on the semiconductor substrate and having an active layer, a diffraction grating formed on or underneath the active layer, a front facet of an inverted mesa slope, and a rear facet, an anti-reflection coating film formed on the front facet, a reflective film formed on the rear facet, an upper electrode formed on the resonator unit, and a lower electrode formed underneath the semiconductor substrate, wherein a length in a resonator direction of the resonator unit is shorter than a length in the resonator direction of the semiconductor substrate, and a laser beam is emitted from the front facet.

Abstract: [OBJECT] To provide a proton-conductive membrane which exhibits high proton conductivity even in an anhydrous environment. [SOLVING MEANS] Provided is a proton-conductive membrane including a crosslinked polymer and a plasticizer, wherein the crosslinked polymer includes a proton acceptor group in an amount equal to not less than 10 mol % of repeating units constituting the crosslinked polymer, the plasticizer includes a proton donor compound having a pKa value of not more than 2.5, and the plasticizer is a viscoelastic solid in a temperature range of 50° C. to 120° C.

Abstract: An optical semiconductor device includes: an n-type semiconductor substrate; an n-type cladding layer provided on the n-type semiconductor substrate; an active layer of a semiconductor laser provided on the n-type cladding layer; a waveguide layer of a waveguide provided on the n-type cladding layer and having a side facing a side of the active layer; a p-type cladding layer provided on the active layer and the waveguide layer; and a middle layer provided between the side of the active layer and the side of the waveguide layer, provided between the n-type cladding layer and the waveguide layer, not provided on the active layer, and having a band gap greater than a band gap of the waveguide layer.

Abstract: A recording medium recording a program for a process, the process includes: calculating an amount of distortion in a via of a printed circuit board based on an expression using coefficient m, ??={(L×?×?t×E)/(D×T)}×m, where ?? is the amount of distortion, L is a length of the via, ? is a thermal expansion coefficient of a base material, ?t is a temperature change of an environment, E is a Young's modulus, D is a diameter of the via, and T is a thickness of plating in the via; and calculating a lifetime of the via based on an expression, M=N/(n×365), where M is the lifetime of the via, n is a frequency of the temperature change, and N is the number of cycles of the lifetime satisfying an expression Nx=C/??.

Abstract: An image display apparatus includes a light source device including a light source unit; a scanning optical system including an image forming unit on which an intermediate image is formed by light from the light source unit; and a virtual image optical system configured to guide light of the intermediate image by using a reflecting mirror and a curved transmissive reflection member. The scanning optical system includes an optical scanning unit configured to scan the light from the light source unit in a main scanning direction and a sub-scanning direction of the image forming unit. The image forming unit is a transmissive member curved with a convex surface toward the reflecting mirror.

Abstract: An image display apparatus includes an image forming unit and a vehicle provided with the image display apparatus. The image forming unit includes a light source unit configured to emit light, an optical scanner configured to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction, and an intermediate image forming unit configured to form an intermediate image by the light scanned by the optical scanner. The image forming unit satisfies 0.3<Rm/L<3, where Rm denotes a radius of curvature of the intermediate image forming unit in the main scanning direction, and L denotes distance between a reference point when the optical scanner deflects and scans the light and a center of the intermediate image formed on the intermediate image forming unit. In the vehicle, the image display apparatus indicates the intermediate image to a driver as a virtual image.

Abstract: An optical scanning apparatus includes a light source to emit light, a light deflector having a reflection face to deflect the light as a scan-use light to scan an image generation element by oscillating the reflection face, a light receiving element to receive a control-use light to generate a signal used for controlling a scanning condition of the scan-use light, and a control unit to control the scanning condition of the light deflector based on the generated signal.

Abstract: A numerical control apparatus has a detector, a condition generator, and a logging processor. The detector detects occurrence of a preset event. The condition generator acquires, as a reference value, first numerical control information at a timing when the occurrence of the event is detected, and performs preset first arithmetic processing by using the reference value to generate a first determination condition. When the first numerical control information satisfies the first determination condition, the logging processor starts a process of logging second numerical control information.

Abstract: A light guide includes a light-guide member including an incidence portion through which image light emitted from an image display element enters the light-guide member; an exit portion through which the image light exits the light-guide member to an outside of the light-guide member; a retroreflection portion to reverse a direction of travel of the image light guided through the light-guide member; and an extraction portion to guide the image light reversed by the retroreflection portion to the exit portion. The retroreflection portion has a plurality of surfaces.

Abstract: A numerical control device includes an NC-machining-program reading unit to read an NC machining program, a machining-removal-shape generation unit to generate a machining removal shape by a block of the NC machining program, a tool-data search unit to search for tool data to be used in the NC machining program, and a machining-finished-shape generation unit to generate a machining finished shape from the machining removal shape generated by the machining-removal-shape generation unit. During editing of the NC machining program, the machining removal shape and the machining finished shape can be confirmed sequentially by the block.

Abstract: An image display apparatus includes a light source device including a light source unit; a scanning optical system including an image forming unit on which an intermediate image is formed by light from the light source unit; and a virtual image optical system configured to guide light of the intermediate image by using a reflecting mirror and a curved transmissive reflection member. The scanning optical system includes an optical scanning unit configured to scan the light from the light source unit in a main scanning direction and a sub-scanning direction of the image forming unit. The image forming unit is a transmissive member curved with a convex surface toward the reflecting mirror.

Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.

Abstract: An optical scanning device includes: a light source unit configured to emit a light beam; a light deflecting unit configured to two-dimensionally deflect the light beam in a main scanning direction and a sub-scanning direction orthogonal to the main scanning direction; and an image formation unit configured to form an image by two-dimensional scanning of the light beam performed by the light deflecting unit, in which a flat plate configured to transmit light incident on the light deflecting unit and deflected reflection light from the light deflecting unit is arranged in an optical path of the light beam between the light deflecting unit and the image formation unit, and the flat plate is inclined with respect to the image formation unit in a cross section in the sub-scanning direction.

Abstract: A virtual-image forming device includes a device body having an opening; a real-image forming unit disposed within the device body to output light; a mirror to reflect the light output from the real-image forming unit; and an optical element. The optical element has positive power to refract the light reflected by the mirror and let the light exit through the opening to form of the light on a transmission and reflection member.

Abstract: A high pressure container has enhanced pressure resistant strength, and a method for manufacturing such high pressure container. The high pressure container includes a sealable hollow liner and a reinforcement layer including a composite carbon fiber bundle covering an outer surface of the hollow liner, wherein the reinforcement layer is wound around the outer surface of the hollow liner and fixed with a cured product of thermosetting resin, and a stress relaxation portion including the cured product of thermosetting product and a plurality of carbon nanotubes between a carbon fiber contained in one composite carbon fiber bundle and a carbon fiber contained in the other composite carbon fiber bundle.

Abstract: A light guide for a virtual image device to guide and emit image light output from an image display element to display a virtual image. The light guide includes a light-guide member and an optical member. The light-guide member includes an incidence portion to receive the image light and an exit portion to emit the image light to an outside, and a reflective portion inclined relative to the incidence portion to guide the image light received by the incidence portion into the light guide. The light-guide member also includes an extraction portion including first planes each inclined relative to the exit portion and second planes each parallel with the exit portion, to guide the image light from each first plane to the exit portion and extract the image light. The optical member includes a parallel plane and an inclined portion.

Abstract: An image display device includes an image forming unit configured to emit light forming an image; and a concave mirror configured to reflect the light emitted from the image forming unit toward a transparent reflecting member. The image forming unit includes a transparent member on which the image is formed or which forms the image, the transparent member being curved bulging toward the concave mirror.