Abstract: An image display element includes micro light emitting elements disposed in an array on a driving circuit substrate. An excitation light emitting element includes a main body including a compound semiconductor, a metal electrode disposed on a side of the main body located closer to the driving circuit substrate, and a transparent electrode disposed on an opposite side to the driving circuit substrate, and a light emission layer included in the main body is disposed on a side opposite to the driving circuit substrate from a center portion of the main body.

Abstract: A semiconductor device includes a semiconductor substrate of a first conductivity type, a body region of the first conductivity type, a source region of a second conductivity type, a drain region of the second conductivity type, a gate electrode, a drift region of the second conductivity type, an implanted oxide layer, and a semiconductor region of the first conductivity type. The semiconductor region is formed to extend in a direction along the top face of the semiconductor substrate. A first distance and a second distance are set so that an intensity of 0.35 MV/cm or less is observed in an electric field of a first region including the end portion of the drift region and in an electric field of a second region between the end of the semiconductor region and the drain region.

Abstract: A projector includes: a laser light source; a shaping section configured to shape a laser light emitted from the laser light source; and a scanning section configured to two-dimensionally scan, on a screen, a laser beam shaped by the shaping section. Under a situation where a distance from an optical emitting surface of the laser beam to the screen is constant, the laser light source and the shaping section are configured to perform two-dimensional scanning of the laser beam on the screen by using a tip of the laser beam corresponding to each of cross sections at a plurality of positions of a tapered portion of the laser beam from the scanning section to a beam waist of the laser beam.

Abstract: An image display device comprises a drive circuit substrate including a drive circuit that supplies currents to micro light-emitting elements to emit light; and the micro light-emitting elements arranged in an array shape on the drive circuit substrate, wherein a light-distribution control unit that increases forward light emission of the micro light-emitting elements is disposed on a light-emitting surface of each of the micro light-emitting elements, and a partition wall that does not transmit the light emitted by the micro light-emitting elements is disposed around the light-distribution control unit.

Abstract: In an image display device, a scattering unit has a size that covers a surface of a red conversion unit on a side that emits light having a second wavelength and a surface of a green conversion unit on a side that emits light having a third wavelength, and faces at most a part of a micro LED element.

Abstract: A light-emitting device comprises a casing including an upper surface portion having one or more first through holes, and a front surface portion having an opening; a transparent member that closes off the one or more first through holes; one or more light-emitting elements that face the one or more first through holes, respectively, within the casing; and a lid member provided so as to close off the opening, wherein the casing is integrally formed using one material.

Abstract: An image display element includes micro light emitting elements arranged in an array, a drive circuit substrate that includes a drive circuit for supplying a current to the micro light emitting elements to cause light to be emitted, and an antenna arranged on a light emitting surface of each of the micro light emitting elements, in which the antenna includes isolated convex portions.

Abstract: An image display device includes: a plurality of micro light emitting elements arranged in an array shape; a driving circuit substrate including a driving circuit that supplies electric current to the plurality of micro light emitting elements and that causes the plurality of micro light emitting elements to emit light; a plurality of micro lenses in contact with light emitting surfaces of the plurality of micro light emitting elements; and a plurality of partition walls disposed around the plurality of micro lenses in a direction parallel to the light emitting surfaces.

Abstract: A micro light emitting element includes: a body including a compound semiconductor layer in which a first conductive layer, a light emission layer, and a second conductive layer with a conductive type opposite to a conductive type of the first conductive layer are stacked in order from a light emitting surface side; a first electrode including a transparent electrode on the light emitting surface side; a second electrode including a metal film on a side opposite to the light emitting surface side; and a first reflective material covering a side surface of the body. The light emission layer is disposed on the light emitting surface side of the body. The side surface of the body is tapered at an inclination angle to open in a light emitting direction.

Abstract: A laser device includes a substrate including a principal surface and a recess provided in the principal surface; a laser oscillation unit fixed to the principal surface in direct contact with the principal surface or with an adhesive interposed between the laser oscillation unit and the principal surface, the laser oscillation unit having an emission surface from which laser light that diverges as the laser light travels is emitted along the principal surface; and a reflecting member fixed to a bottom surface of the recess and having an inclined surface that is inclined with respect to the principal surface so as to reflect the laser light. At least a portion of the inclined surface is positioned in a space inside the recess.