Abstract: To provide a display apparatus including a display part which displays an image of a virtual space, and a transmitting part. The display part further displays state information relating to a state of a reality space where an operator of the display part is present, and the transmitting part transmits, to control equipment which controls the state of the reality space, control information for controlling the state of the reality space. The display apparatus may further include a sensing part. The display part may further display a virtual input image in the virtual space. The transmitting part may transmit, when input to the virtual input image is sensed with the sensing part, the control information to the control equipment.

Abstract: The gas detection apparatus comprises a figure of all or a part of n ellipsoids. When a region inside the ellipsoid Ei and not including the ellipsoid Esi is defined as a region Ri, the ellipsoid Ei including a light source region of the light emitting part is defined as an ellipsoid Es, the ellipsoid Ei including a light receiving region of the light receiving part is defined as an ellipsoid Ed, the region Ri of the ellipsoid Es is defined as a region Rin, and the region Ri of the ellipsoid Ed is defined as a region Rout, 60% or more of the light source region is present in the region Rin and 60% or more of the light receiving region is present in the region Rout.

Abstract: Provided is an optical densitometer for measuring a density of a gas or liquid of interest, the optical densitometer comprising: a light source capable of introducing light into a core layer; a detector capable of receiving the light that has propagated through the core layer; and an optical waveguide, the optical waveguide comprising: a substrate; and the core layer comprising a light propagation portion capable of propagating the light in an extending direction of the light propagation portion, and a diffraction grating portion, the diffraction grating portion comprising a diffraction grating region and an extension region connected to the diffraction grating region, and a first optical coupling region included in the extension region and a second optical coupling region included in the light propagation portion being optically coupled with respect to the light propagating through the core layer.

Abstract: An optical concentration measurement device includes an LED light source, alight receiving unit having a rectangular light receiving surface and outputting a detection signal representing intensity of received light, and light guiding units guiding light emitted by the LED light source to the light receiving unit, wherein a shape on the rectangular light receiving surface of light radiated on the light receiving surface is rectangular, the optical concentration measurement device measures concentration of an object to be measured existing in a light path formed by the light guiding units, based on the detection signal output from the light receiving unit, and the light guiding units guide light at a diffraction limit or greater in such a way that area of the light on the rectangular light receiving surface is ½ or less of area of the rectangular light receiving surface.

Abstract: Provided is a gas detection device that is compact and can perform accurate measurement. The gas detection device includes a light-emitting section (10), a light-receiving section (20), and a light-guiding section (30) that guides light from the light-emitting section (10) to the light-receiving section (20). The light-guiding section (30) includes a mirror (50) and has a shape of part of at least one spheroid. The mirror (50) is provided at a position of or in proximity to a first focal point of the spheroid. The light-emitting section (10) and the light-receiving section (20) are each provided at a position of or in proximity to a focal point of the spheroid that is not the first focal point. The light-emitting section (10) and the light-receiving section (20) are arranged in parallel to a major axis direction of the spheroid.

Abstract: Provided is a risk information provision device including: an information acquisition unit configured to acquire risk information related to a risk depending on a status of leakage of a refrigerant in a determination target and risk handling information for handling the risk, wherein the status is determined on a basis of a concentration of the refrigerant in the determination target; a provision unit configured to provide at least one of the risk information or the risk handling information; and a date information acquisition unit configured to acquire date information of a date on which at least one of the risk information or the risk handling information is acquired. The risk handling information includes recipient information related to one or more recipients that receive the risk information. The provision unit is configured to provide at least one of the risk information or the date information to the one or more recipients.

Abstract: An authentication system includes: a sensor including an instrumentation unit configured to instrument environment information about an environment in a space to be authenticated, a generating unit configured to generate statistical information about the environment of the space based on the environment information, and a communication unit configured to transmit the statistical information to an authentication server configured to authenticate the space based on the statistical information; and the authentication server. The authentication server includes an authentication unit configured to authenticate the space based on the statistical information.

Abstract: Provided is a gas sensor that can suppress characteristic variation caused by deformation of a semiconductor substrate. The gas sensor (1) includes a substrate (redistribution layer 30), a light-emitting element (11) provided at a front surface (30a) or embedded in the substrate, a light-receiving element (12) that is provided at the front surface or embedded in the substrate and that receives light emitted from the light-emitting element, and a plurality of external connection terminals (40) at a rear surface (30b) that is an opposite surface to the front surface of the substrate. At least a portion of the plurality of external connection terminals is electrically connected to the light-emitting element and the light-receiving element. The plurality of external connection terminals is arranged such that, in plan view, the light-emitting element and the light-receiving element are not present on a line linking any two external connection terminals.

Abstract: Provided is an apparatus with a gas detection function capable of detecting a detection target gas with high accuracy. An apparatus with a gas detection function comprises: a housing (10); a vibration source (20); and a gas measurement unit (40) located inside the housing and demarcated by a partition, wherein the vibration source is located outside the gas measurement unit, the gas measurement unit includes a detector (41) located on a substrate (30), and a gas detection space (42) provided with a hole (43) through which a gas passes, and a frequency f expressed by the following Formula (1): f = c 2 ? ? ? S VL Formula ? ( 1 ) is 500 Hz or more, where V is a volume of the gas detection space, S is a cross-sectional area of the hole, L is an effective length of the hole, and c is a sound speed.

Abstract: A gas detection apparatus 1 includes a substrate 2; a light emitting element 3 provided on a main surface of the substrate for emitting light; a light receiving element 4 provided on the main surface of the substrate 2 for receiving the light; a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element; a first joint member 6; and a second joint member 7. The first joint member joins the substrate and the light guide member, limits a displacement in a direction parallel and/or orthogonal to the main surface of the substrate. The second joint member joins the substrate and the light guide member, limits a displacement of the light guide member in a direction parallel to the main surface of the substrate and/or limits a displacement within a plane orthogonal to the main surface of the substrate.

Abstract: Provided is a gas detection apparatus which suppresses occurrences of distortions of the optical path to reduce fluctuations of the gas detection sensitivity. A gas detection apparatus 1 includes a substrate 2; a light emitting element 3 disposed in a first region 21 in a main surface 20 of the substrate 2 for emitting light; a light receiving element 4 disposed in a second region 22 in the main surface 20 of the substrate 2 for receiving the light; a light guide member 5 for guiding the light emitted by the light emitting element 3 to the light receiving element 4; and a joint member 6 joining the substrate 2 and the light guide member 5. The joint member 6 serves as a rotation axis when the light guide member 5 is displaced relative to the substrate 2.

Abstract: Provided is a carbon dioxide concentration prediction system including a prediction unit configured to predict, based on a current carbon dioxide concentration of an internal space in a prediction target and environment information in the prediction target, a carbon dioxide concentration of the internal space, and a provision unit configured to provide the carbon dioxide concentration predicted by the prediction unit. The prediction unit may further predict a change over time of the carbon dioxide concentration in the prediction target from the current carbon dioxide concentration to the carbon dioxide concentration predicted based on the current carbon dioxide concentration and the environment information, and the provision unit may further provide the change over time of the carbon dioxide concentration.

Abstract: An optical chemical analysis apparatus (14) includes an optical waveguide (15) and a light source (17). The optical waveguide (15) has a core layer (12) that includes a light propagator (10), through which light can propagate in an extension direction, and a diffraction grating (first diffraction grating (11)) that connects optically to the light propagator (10). The light source (17) is configured to inject the light into the diffraction grating by emitting incoherent light. The diffraction grating further includes a light intake region for introduction of light from the light source, and the light source includes at least one light emitting point at a position such that the difference between the shortest optical distance Lab to the light intake region and the longest optical distance Lac to the light intake region is less than half of the wavelength, in a vacuum, of the light.

Abstract: A gas detection device 1 comprises: a light emitter 10 configured to emit light of a wavelength band including a wavelength absorbed by a detection target gas; a light detector 20 having sensitivity to the wavelength band; a package 40; a light guide 50 configured to guide the light to the light detector 20; a joint 60 joining the package 40 and the light guide 50; and a heat insulator 70 located in a gap between the package 40 and the light guide 50, wherein part of a surface of the package 40 facing the light guide 50 has a proximity region D where a distance between the package 40 and the light guide 50 is 500 ?m or less, and at least part of the heat insulator 70 and at least part of the joint 60 are located adjacent to each other in part of the proximity region D.

Abstract: Provided is a determination apparatus including: a determination unit configured to determine, based on a carbon dioxide concentration in a determination target, a situation of the carbon dioxide concentration in the determination target and a measurement situation of the carbon dioxide concentration in the determination target; a notification unit configured to notify a determination result by the determination unit; an information acquisition unit configured to acquire improvement information according to at least one of a situation of the carbon dioxide concentration and a measurement situation of the carbon dioxide concentration; and a control unit configured to control the notification unit to have the notification unit notify the determination result and the improvement information.

Abstract: Provided is an infection risk determination system including: a determination apparatus, including a determination unit configured to determine an infection risk degree that living bodies present in a determination target will be infected with an infection source present in the determination target, based on a carbon dioxide concentration in the determination target with an internal space for accommodating a gas containing carbon dioxide and environmental information in the determination target; and a risk control unit, configured to control at least one of an airstream, a temperature, a humidity, an intensity of ultraviolet radiation, and an amount of substances in a gas in the internal space based on a determination result of the infection risk degree; and a display unit, configured to display a control state by the risk control unit.

Abstract: A risk information provision device is provided, comprising: an information acquisition unit for acquiring risk information related to a risk depending on a status of a carbon dioxide concentration in a determination target and risk handling information for handling the risk, wherein the status of the carbon dioxide concentration is determined based on a temporal change in the carbon dioxide concentration in the determination target; and a provision unit for providing at least one of the risk information or the risk handling information, wherein the risk handling information includes recipient information related to a recipient to which the risk information is provided, and the provision unit is configured to provide the risk information to the recipient.

Abstract: Provided is an optical element, in which: an internal wiring portion electrically connects a first contact electrode portion and a second contact electrode portion to each other; a second region, an active layer and a second conductive semiconductor layer form a mesa structure; a pad electrode is placed so as to cover a plurality of unit elements, and is electrically connected to at least one of the first contact electrode portion and the second contact electrode portion; a first insulating portion is placed between the pad electrode and a first region of a side surface of a mesa structure and a first conductive semiconductor layer; and a diameter of a circle circumscribed to a region where the pad electrode and a connection portion are in contact with each other is 15% or more of a length of a short side of a substrate.

Abstract: It is an object of this invention to provide an optical waveguide, an optical concentration measuring device, and a method for manufacturing an optical waveguide capable of achieving an improvement of evanescent wave exuding efficiency of propagating light and light extraction efficiency. A core layer provided in an optical waveguide has a first portion having a first film thickness, a second portion having a second film thickness different from the first film thickness, and a third portion connecting the first portion and the second portion. The third portion is formed so that the film thickness is gradually increased from the second portion having the smaller film thickness toward the first portion having the larger film thickness between the first portion and the second portion, and the maximum inclination angle is 10° or more and 45° or less.

Abstract: The gas detection apparatus comprises a figure of all or a part of n ellipsoids. When a region inside the ellipsoid Ei and not including the ellipsoid Esi is defined as a region Ri, the ellipsoid Ei including a light source region of the light emitting part is defined as an ellipsoid Es, the ellipsoid Ei including a light receiving region of the light receiving part is defined as an ellipsoid Ed, the region Ri of the ellipsoid Es is defined as a region Rin, and the region Ri of the ellipsoid Ed is defined as a region Rout, 60% or more of the light source region is present in the region Rin and 60% or more of the light receiving region is present in the region Rout.