Abstract: Provided is an imaging device capable of further suppressing color mixing between pixels. The imaging device includes: a semiconductor substrate provided with a photoelectric conversion unit for each of pixels two-dimensionally arranged; a color filter provided for each of the pixels on the semiconductor substrate; an intermediate layer provided between the semiconductor substrate and the color filter; and a low refraction region provided between the pixels by separating at least the color filter and the intermediate layer for each of the pixels, the low refraction region having a refractive index lower than a refractive index of the color filter.

Abstract: A wireless communication network system (1) comprising a sensor device (10) transmitting detected data, one or a plurality of relay devices (100) relaying the data, and a gateway device (11) transferring the data to another network, wherein the sensor device, the relay device, and the gateway device being connected by a wireless communication network, wherein the relay device comprising: a receiver (101) receiving a received signal containing the data; a storage (104) storing heartbeat data; a transmitter (102) transmitting a transmission signal containing the data received by the receiver and periodically transmitting a transmission signal containing the heartbeat data; and a frequency setting unit (103) directing to set a frequency of the received signal received by the receiver and/or a frequency of the transmission signal transmitted from the transmitter based on a frequency setting command transmitted from the gateway device.

Abstract: This reflective screen 10 reflects a part of image light beam projected from an image source LS, to display an image. The reflective screen 10 is provided with: a first optical shape layer 12 which has optical transparency and has a plurality of unit optical shapes 121 arranged on a rear surface thereof; and a reflective layer 13 which is formed in at least some of the unit optical shapes 121 and by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapes 121 are arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

Abstract: This reflective screen 10 reflects a part of image light beam projected from an image source LS, to display an image. The reflective screen 10 is provided with: a first optical shape layer 12 which has optical transparency and has a plurality of unit optical shapes 121 arranged on a rear surface thereof; and a reflective layer 13 which is formed in at least some of the unit optical shapes 121 and by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapes 121 are arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

Abstract: Provided is a component having plant defense activity. A PR1 gene expression activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant defense activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant disease preventive or ameliorating agent containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; and a method of producing a plant defense activating component containing: cultivating a unicellular alga containing a green photosynthetic pigment under an aerobic condition to produce a culture containing an extracellular polysaccharide.

Abstract: To provide a method for inspecting a gas leak from a fuel cell stack, whereby a leak position can be efficiently identified in a short time. A method for inspecting a gas leak from a fuel cell stack includes a jig installation step of installing a division jig that covers an outer surface, on which stacked end faces of the fuel cell stack are exposed, that divides the outer surface into a plurality of regions, and that includes a plurality of inspection spaces on each divided region. The method further includes a first leak inspection step of identifying a leak region, in which the gas leak occurs, with a gas sensor arranged in each of the inspection spaces.

Abstract: The present disclosure provides a semiconductor optical signal amplifier for amplifying a light having an energy smaller than a band gap energy. The semiconductor optical signal amplifier includes: a first end surface; a second end surface, arranged apart from the first end surface; a first semiconductor region and a second semiconductor region, arranged between the first end surface and the second end surface; an active layer, arranged between the first end surface and the second end surface, and sandwiched between the first semiconductor region and the second semiconductor region, made of an indirect transition type semiconductor that amplifies a signal intensity of an input light by stimulated emission; a first electrode, connected to the first semiconductor region; and a second electrode, connected to the second semiconductor region and detecting a change in a carrier density in the active layer by a potential difference from the first electrode.

Abstract: A control device that controls an output voltage of a converter includes: a neural network configured to generate a control signal for controlling a power supply block based on a detection signal from an output stage of the power supply block that supplies power to a load of the converter; a model generator configured to generate a model of a nonlinear dynamic system by machine-learning from the detection signal; a model storage configured to store the model generated by the model generator; and a model switch configured to switch to a model, which is selected from models stored in the model storage and is optimal for a latest detection signal, and provide the switched model to the neural network, wherein the neural network generates the control signal based on a future output voltage predicted by using the model provided by the model switch.

Abstract: A single-photon source includes a substrate of a wide-bandgap semiconductor provided with a light-emission region including only one target point detect, a cover mask arranged on a main surface of the substrate and having an opening to which the light-emission region in the substrate is exposed, and an excitation system configured to shift an electron in a defect-ground state to an excited state at the point defect in the light-emission region. A single photon released from the point defect in the light-emission region when the electron in the excited state is shifted to the ground state is output through the opening in the cover mask.

Abstract: Provided is a component having plant defense activity. A PR1 gene expression activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant defense activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant disease preventive or ameliorating agent containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; and a method of producing a plant defense activating component containing: cultivating a unicellular alga containing a green photosynthetic pigment under an aerobic condition to produce a culture containing an extracellular polysaccharide.

Abstract: To provide a method for inspecting a gas leak from a fuel cell stack, whereby a leak position can be easily identified in a short time. A method for inspecting a gas leak from a fuel cell stack includes a preparation step of arranging stacked end faces of the fuel cell stack so as to be exposed on a side surface, a jig installation step of installing an inspection jig including a space for detecting the gas leak from the side surface so as to cover the side surface, a gas leak measurement step of detecting the gas leak with a gas sensor arranged in an upper part in the space, and a position identification step of identifying a leak position in a height direction from a detection start time of the gas sensor.

Abstract: To provide a method for inspecting a gas leak from a fuel cell stack, whereby a leak position can be efficiently identified in a short time. A method for inspecting a gas leak from a fuel cell stack includes a jig installation step of installing a division jig that covers an outer surface, on which stacked end faces of the fuel cell stack are exposed, that divides the outer surface into a plurality of regions, and that includes a plurality of inspection spaces on each divided region. The method further includes a first leak inspection step of identifying a leak region, in which the gas leak occurs, with a gas sensor arranged in each of the inspection spaces.

Abstract: This reflective screen 10 reflects a part of image light beam projected from an image source LS, to display an image. The reflective screen 10 is provided with: a first optical shape layer 12 which has optical transparency and has a plurality of unit optical shapes 121 arranged on a rear surface thereof; and a reflective layer 13 which is formed in at least some of the unit optical shapes 121 and by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapes 121 are arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

Abstract: A signaling lamp monitor is configured to add a communication function to a signaling lamp such as a stack signaling lamp easily and at a low cost. The signaling lamp monitor includes a detector that detects light emitted from the signaling lamp, a controller that generates a detection signal at least based on the detection, and a transmitter that transmits the detection signal by wireless communication. The transmitter is provided with an antenna disposed above the detector.

Abstract: A signaling lamp monitor is configured to add a communication function to a signaling lamp such as a stack signaling lamp easily and at a low cost. The signaling lamp monitor includes a detector that detects light emitted from the signaling lamp, a controller that generates a detection signal at least based on the detection, and a transmitter that transmits the detection signal by wireless communication. The transmitter is provided with an antenna disposed above the detector.

Abstract: A display device comprised by being provided with: an image source for emitting image light; a lens for enlarging the image light and emitting the image light to the viewer side; and an optical sheet disposed between the image source and the lens or on the viewer side of the lens, wherein the optical sheet comprises at least two or more layers, a plurality of convex shapes are formed at interfaces between the layers, a difference ?n in refractive index between the layers adjacent to each other satisfies 0.005??n?0.1, a half-value angle ? of the optical sheet satisfies 0.05°???0.2°, and a diffusion angle ? of the optical sheet at which a maximum brightness becomes 1/20 satisfies ??5×?.

Abstract: A semi-transmissive reflection sheet is provided, including a first optical shape layer including unit optical shapes, and a second optical shape layer laminated on the first optical shape layer from a side of a surface formed by the unit optical shapes. The unit optical shape has a first surface that is inclined with respect to a light emergent side surface of the second optical shape layer. The light emergent side surface is opposed to the first optical shape layer. The unit optical shape also has a second surface that is not parallel to the light emergent side surface. A reflection layer that reflects at least a part of image light traveling in the semi-transmissive reflection sheet is provided on the first surface.

Abstract: A method for manufacturing a fuel cell assembly includes: arranging an end face of a gas diffusion layer on a placement jig in a state abutting an end face of a resin frame; melting a part of the frame member and causing to penetrate into the gas diffusion layer by pressurizing the projecting part by way of a heat-transfer member, and heating the projecting part via the heat-transfer member by abutting a heating member against of the heat-transfer member; and solidifying the part of the resin frame having penetrated into the gas diffusion layer, in which an abutting position of the heating member relative to the heat transfer member is set in the melting step so that a central axis of the heating member is positioned more to a side of the gas diffusion layer than the central axis of the projecting part.

Abstract: A display device comprised by being provided with: an image source for emitting image light; a lens for enlarging the image light and emitting the image light to the viewer side; and an optical sheet disposed between the image source and the lens or on the viewer side of the lens, wherein the optical sheet comprises at least two or more layers, a plurality of convex shapes are formed at interfaces between the layers, a difference ?n in refractive index between the layers adjacent to each other satisfies 0.005??n?0.1, a half-value angle ? of the optical sheet satisfies 0.05°???0.2°, and a diffusion angle ? of the optical sheet at which a maximum brightness becomes 1/20 satisfies ??5×?.