Abstract: The present technology relates to a light source apparatus that makes it possible to provide a widely applicable light source apparatus. A light source apparatus includes a transmissive board that transmits light emitted by a light-emitting element, a circuit board that drives the light-emitting element and is joined to the transmissive board, and a light-emitting board that has the light-emitting element and is connected to the circuit board via a first bump. Further, in the light source apparatus, the circuit board and an organic board are configured to be connected by sandwiching the light-emitting board via second bumps. The present technology can be applied to a light source apparatus that emits light.

Abstract: The present technology relates to an electronic circuit board, a base member, electronic equipment, an electronic equipment manufacturing method and an electronic circuit board manufacturing method that make it possible to mount an electronic circuit board easily on a curved surface, for example. An electronic circuit board has a deformable wiring board having a plurality of areas that is long in one direction and is formed to be partially continuous with each other, and the plurality of areas of the wiring board is provided with deformable plate-like plate members that are more rigid than the wiring board. For example, the present technology can be applied to an electronic circuit board on which various devices are mounted.

Abstract: To mitigate the accuracy of misalignment to reduce costs, and to suppress an inter-mode propagation delay difference to enable high-quality transmission of signals. An optical waveguide is configured to propagate only a fundamental mode at a first wavelength and propagate at least a first-order mode as well as the fundamental mode at a second wavelength. The optical waveguide is configured such that a refractive index distribution of a core and a cladding is controlled so that the inter-mode propagation delay difference is within a predetermined threshold, for example, the inter-mode propagation delay difference is zero, when communication is performed using light of the second wavelength. For example, the first wavelength is in a 1310-nm band and the second wavelength is in an 850-nm band.

Abstract: To properly measure the bending amount of an optical waveguide routed in an electronic device or the like. An optical signal outputted with a second wavelength from the optical waveguide is received by a light receiving unit. In this case, the optical waveguide allows propagation only in a basic mode at a first wavelength and the second wavelength is a wavelength where the optical waveguide allows propagation at least in a primary mode in addition to a basic mode. The bending amount of the optical waveguide is obtained by a processing unit on the basis of the amount of a primary mode component included in the optical signal with the second wavelength. For example, the processing unit obtains the bending amount of the optical waveguide by using the ratio of the amount of the primary mode component included in the optical signal with the second wavelength and the amount of the basic mode component included in the optical signal with the second wavelength.

Abstract: A display device, a method of manufacturing a display device, and an electronic device excellent in light extraction efficiency and viewing angle characteristic are provided. A display device includes: a substrate; a light emitting element attached to the substrate; and a sealing layer that seals the light emitting element, in which an uneven portion having a plurality of concave portions and a plurality of convex portions is provided on a light emitting surface of the light emitting element, and a low refractive index portion having a refractive index lower than that of the sealing layer is formed at a periphery of an immediately above portion above the light emitting element in the sealing layer.

Abstract: To relax the accuracy with respect to a positional deviation, and thus to reduce costs. An optical waveguide is included that performs propagation only in a reference mode at a first wavelength. Communication is performed using light that has a second wavelength and includes a component of at least a first order mode in addition to a component of the reference mode. Here, the second wavelength is a wavelength that enables the optical waveguide to perform propagation in at least the first order mode in addition to the reference mode. For example, a light path adjuster that adjusts a light path such that input light is guided to a core of the optical waveguide, is further included.

Abstract: There is provided an optical waveguide that performs propagation only in a reference mode at a first wavelength. Communication is performed using light of a second wavelength that enables the optical waveguide to perform propagation in at least a first order mode in addition to the reference mode. When light entering the optical waveguide deviates with respect to an optical axis or deviates angularly, propagation is performed in at least the first order mode in addition to the reference mode, the first order mode being generated due to the deviation with respect to the optical axis or the angular deviation. This results in a reduction in a loss of coupling of optical power. This makes it possible to relax the accuracy with respect to a deviation with respect to an optical axis or an angular deviation, and thus to reduce costs.

Abstract: An image display device according to an embodiment of the present technology include an emission portion, an irradiation target, and an optical portion. The emission portion emits image light along a predetermined axis. The irradiation target is disposed at at least a part around the predetermined axis. The optical portion controls an incident angle of the image light on the irradiation target, the image light having been emitted from the emission portion, the optical portion being disposed in a manner that the optical portion faces the emission portion on the basis of the predetermined axis.

Abstract: To provide a composition containing a sulfonylimide salt, which has excellent storage stability even at a high temperature and can be used for an electrolytic solution material or an electrolytic solution. The composition contains an electrolyte, a solvent, and an anion component. The electrolyte contains a sulfonylimide salt, the anion component contains an acid component having an acid-dissociation constant pKa (an acid-dissociation constant pKa1 in a first stage for a plurality of ionized acids) of 0 or more and 6.5 or less at a concentration of 50 ppm or more and 10000 ppm or less relative to the electrolyte, a concentration of fluoride ion is 100 ppm or less relative to the electrolyte, and a concentration of sulfate ion is 100 ppm or less relative to the electrolyte.

Abstract: The coupling loss of optical power on a reception side due to an axis deviation on a transmission side is satisfactorily mitigated. A connector body including an optical path adjusting unit and a lens is provided. The optical path adjusting unit adjusts an optical path such that the diameter of incident light is reduced while the incident angle is kept. The lens collects light whose optical path has been adjusted, and causes the light to be incident on a light receiver. For example, light incident on the optical path adjusting unit is collimated light. Furthermore, for example, the optical path adjusting unit has a through hole in a central portion. While the incident angle of light to the light receiver satisfies an NA, the focal distance of the lens is decreased. This can mitigate the coupling loss of optical power on a reception side due to an axis deviation on a transmission side.

Abstract: An electrolyte composition includes: a sulfonylimide compound represented by the following general formula (1) as an electrolyte salt; and an amidosulfuric acid component. LiN(X1SO2)(X2SO2)??(1) (where X1 and X2 are identical to or different from each other, and each represent a fluorine atom, an alkyl group with a carbon number of 1 to 6, or a fluoroalkyl group with a carbon number of 1 to 6).

Abstract: An aqueous solution containing an alkali metal bis(fluorosulfonyl)imide, in which a total content of the alkali metal bis(fluorosulfonyl)imide and water is 98 mass % or more with respect to a total amount of the aqueous solution, and a pH is ?3 to 10.

Abstract: To relax the accuracy with respect to a positional deviation, and thus to reduce costs. An optical waveguide is included that performs propagation only in a reference mode at a first wavelength. Communication is performed using light that has a second wavelength and includes a component of at least a first order mode in addition to a component of the reference mode. Here, the second wavelength is a wavelength that enables the optical waveguide to perform propagation in at least the first order mode in addition to the reference mode. For example, a light path adjuster that adjusts a light path such that input light is guided to a core of the optical waveguide, is further included.

Abstract: To relax the accuracy with respect to a deviation with respect to an optical axis or an angular deviation, and thus to reduce costs. An optical waveguide is included that performs propagation only in a reference mode at a first wavelength. Communication is performed using light of a second wavelength that enables the optical waveguide to perform propagation in at least a first order mode in addition to the reference mode. When light entering the optical waveguide deviates with respect to an optical axis or deviates angularly, propagation is performed in at least the first order mode in addition to the reference mode, the first order mode being generated due to the deviation with respect to the optical axis or the angular deviation. This results in a reduction in a loss of coupling of optical power. This makes it possible to relax the accuracy with respect to a deviation with respect to an optical axis or an angular deviation, and thus to reduce costs.

Abstract: [Object] To provide an optical coupling device that efficiently receives an optical signal from an optical fiber and has improved communication quality, and an optical communication system using the same. [Solving Means] An optical coupling device according to the present technology includes a light receiving and emitting device and an optical device. The light receiving and emitting device includes a light emitter that emits outgoing light, and a light receiver that receives incident light from outside. The light receiver has a light passing part through which the outgoing light passes. The light passing part is arranged on an optical axis of the incident light. The optical device causes incident light around the optical axis of the incident light to be refracted so as to be apart from the optical axis and to enter the light receiver.

Abstract: To satisfactorily prevent a laser hazard caused in a non-fitting state using a simple structure. A connector body is included that includes a lens and a diffusion section, the lens performing formation with respect to light that exits a light emitter, and causing light obtained by the formation to exit the lens, the diffusion section causing the light obtained by the formation performed by the lens to diffusely exit the diffusion section. For example, the diffusion section includes a microlens array or a diffusion plate. For example, a position regulator that regulates a fitting position at which the connector body fits a facing connector, is further included.

Abstract: To relax the accuracy with respect to a positional deviation, and thus to reduce costs. An optical waveguide and a light path adjuster are included, the optical waveguide performing propagation only in a reference mode at a first wavelength, the light path adjuster adjusting a light path such that input light is guided to a core of the optical waveguide. Communication is performed using light of a second wavelength that enables the optical waveguide to perform propagation in at least a first order mode in addition to the reference mode. When there is a positional deviation, input light that is not headed for the core of the optical waveguide is guided to the core due to the light path adjuster adjusting a path of the light. This results in a reduction in a loss of coupling of optical power.

Abstract: To successfully reduce a coupling loss in optical power on the reception side that occurs due to an axial deviation on the transmission side. A connector body is included that includes a lens performing formation with respect to light that exits a light emitter, and causing light obtained by the formation to exit the lens. The lens includes a circular first lens portion situated in a center portion of the lens, and a ring-shaped second lens portion situated around an outer circumference of the first lens portion. The second lens portion changes a light path of a portion of input light when the portion of the input light is input to the second lens portion, such that the light path of the portion of the input light is oriented toward a direction of an optical axis of the lens, the input light being input light of which an optical axis deviates from the optical axis of the lens.

Abstract: The present technology provides an optical connector of a collimated coupling system that is less affected by an external impact. Provided is an optical connector including a first optical path converting unit having one or more reflection planes, the first optical path converting unit configured to emit light in an opposite direction to light propagation. The first optical path converting unit may be configured to emit light toward a second optical path converting unit that is present when the optical connector is connected with another optical connector. The first optical path converting unit and the second optical path converting unit may be configured to form a Z-shaped optical path.

Abstract: The coupling loss of optical power on a reception side due to an axis deviation on a transmission side is satisfactorily mitigated. A connector body including an optical path adjusting unit and a lens is provided. The optical path adjusting unit adjusts an optical path such that the diameter of incident light is reduced while the incident angle is kept. The lens collects light whose optical path has been adjusted, and causes the light to be incident on a light receiver. For example, light incident on the optical path adjusting unit is collimated light. Furthermore, for example, the optical path adjusting unit has a through hole in a central portion. While the incident angle of light to the light receiver satisfies an NA, the focal distance of the lens is decreased. This can mitigate the coupling loss of optical power on a reception side due to an axis deviation on a transmission side.