Abstract: A light emitting element includes: a substrate; a mesa portion formed on the substrate and including an active layer, a first semiconductor layer, and a second semiconductor layer; a metal layer including a first metal part disposed on a top surface of the mesa portion and connected to the second semiconductor layer and a second metal part formed integrally with the first metal part and extending along a side surface of the mesa portion; an insulating layer formed on the side surface; and a resin layer formed on the insulating layer. The first metal part includes an opening region formed with a light passage opening and a connection region for external connection. The second metal part is formed on the side surface via the insulating layer and the resin layer and overlaps the active layer when viewed in a direction perpendicular to a thickness direction of the substrate.

Abstract: An image processing apparatus includes a first image creation unit, a second image creation unit, and a CNN processing unit. The first image creation unit creates a first tomographic image of an m-th frame using a data group in list data included in the m-th frame. The second image creation unit creates a second tomographic image using a data group in the list data having a data amount larger than that of the data group used in creating the first tomographic image. The CNN processing unit inputs the second tomographic image to a CNN, outputs an output tomographic image from the CNN, trains the CNN based on a comparison between the output tomographic image and the first tomographic image, and repeats the training operation to generate the output tomographic image in each training.

Abstract: A spectroscopic measurement apparatus includes an optical system, a photodetector, and an analysis unit. The optical system guides measurement target light from an object to a light receiving surface of the photodetector, and forms a spectral image of the measurement target light on the light receiving surface of the photodetector. The photodetector includes the light receiving surface on which a plurality of pixels are arranged respectively on a plurality of rows. The photodetector receives the spectral image for a first exposure time by a plurality of pixels in a first region on the light receiving surface, and outputs first spectrum data. The photodetector receives the spectral image for a second exposure time by a plurality of pixels in a second region on the light receiving surface, and outputs second spectrum data. The second exposure time is longer than the first exposure time.

Abstract: A photoelectric tube includes a housing including a light transmitting portion, an electron emitting portion held by a recess provided in the housing, the electron emitting portion including a concave photoelectric surface facing a light transmitting portion side inside the housing, and an electron capturing portion disposed between the light transmitting portion and the photoelectric surface inside the housing. At least a part of the electron capturing portion is located inside a region on an inside of the photoelectric surface.

Abstract: A spectroscopic unit includes a housing having a wall part formed with an opening, a first aperture part formed with a first aperture, and a second aperture part formed with a second aperture, in which a length of the second aperture in the facing direction is larger than a length of the first aperture in the facing direction, an outer edge of the first aperture is positioned inside each of an outer edge of the opening and an outer edge of the second aperture, and the first aperture includes at least one of a first tapered portion reaching a first surface of the first aperture part and extending toward the first surface, and a second tapered portion reaching a second surface of the first aperture part and extending toward the second surface.

Abstract: An active energy irradiation device includes: a plurality of active energy irradiation units; an air-cooled heatsink thermally connected to the active energy irradiation units; a housing that houses the active energy irradiation units and the heatsink; an intake unit that introduces air into the housing; an exhaust unit that discharges the air to an outside of the housing; and a duct provided between the heatsink and the exhaust unit inside the housing, and allowing the air, which has passed through the heatsink, to flow through to the exhaust unit. An air presence region where the air exists before passing through the heatsink is provided around the duct inside the housing so as to surround the duct.

Abstract: A laser processing method includes a first step of preparing a wafer including a plurality of functional elements disposed to be adjacent to each other via a street, a second step of, after the first step, forming a modified region in the wafer along a line passing through the street, and a third step of, after the second step, irradiating the street with laser light such that a surface layer of the street is removed, and a fracture extending from the modified region reaches a bottom surface of a recess formed by removing the surface layer, along the line.

Abstract: An attenuator device includes: a first window pair that includes a pair of first windows having a pair of first surfaces extending to form a Brewster's angle with an optical axis; a rotation holding portion which holds the first window pair to be rotatable around the optical axis; a second window pair that includes a pair of second windows having a pair of second surfaces extending to form a Brewster's angle with the optical axis; and a ?/4 phase element which gives a phase difference of ?/4 between a polarized component parallel to an optical axis and a polarized component orthogonal to the optical axis when a wavelength of laser light is ?. The second window pair is disposed so that a vibration direction of a P-polarized component transmitted through the second window pair is inclined with respect to the optical axis of the ?/4 phase element by 45° when viewed from a direction parallel to the optical axis.

Abstract: An ultraviolet light generation target includes a light emitting layer. The light emitting layer contains a YPO4 crystal to which at least scandium (Sc) is added, and receives an electron beam to generate ultraviolet light. Further, a method of manufacturing the ultraviolet light generation target includes a first step of preparing a mixture containing yttrium (Y) oxide, Sc oxide, phosphoric acid, and a liquid, a second step of evaporating the liquid, and a third step of firing the mixture.

Abstract: A radiation detector includes a sensor panel having a light receiving surface, a first scintillator panel and a second scintillator panel disposed on the light receiving surface in a state of being adjacent to each other along the light receiving surface, and a moisture-proof layer. The first scintillator panel has a first substrate and a first scintillator layer including a plurality of columnar crystals. The second scintillator panel has a second substrate and a second scintillator layer including a plurality of columnar crystals. The first scintillator layer reaches at least a first portion of the first substrate. The second scintillator layer reaches at least a second portion of the second substrate. The moisture-proof layer is provided continuous over the first scintillator panel and the second scintillator panel.

Abstract: A light detector includes a semiconductor light detection element having a plurality of light detection units disposed two-dimensionally and readout wirings and a plurality of metalenses disposed on a surface of the semiconductor light detection element. Each of the plurality of light detection units has an avalanche photodiode including a first semiconductor region and a second semiconductor region forming a PN junction with the first semiconductor region, and a quenching resistor including one end electrically connected to the second semiconductor region and another end electrically connected to the readout wiring. The plurality of metalenses are disposed two-dimensionally to overlap the plurality of light detection units, and converge light such that a convergence spot is located at a position which is within the first semiconductor region and which is separated by a predetermined distance from a boundary between the first semiconductor region and the second semiconductor region.

Abstract: A transfer part of a photoelectric conversion device includes a first transfer region configured to transfer electric charge along a first line, a second transfer region configured to transfer the electric charge along a second line, a third transfer region configured to transfer the electric charge along a third line, a first transfer electrode, and a second transfer electrode. The third line is deviated from at least one of the first line and the second line. The third transfer region includes a first semiconductor region having a first impurity concentration, and a second semiconductor region having a second impurity concentration higher than the first impurity concentration. The second semiconductor region extends along the third line to be widened on the second transfer region side. The first semiconductor region is disposed on both sides of the second semiconductor region.

Abstract: In a semiconductor laser device, a supply path that guides a cooling fluid supplied from a supply port side, toward a disposition region, spray holes that spray the cooling fluid guided by the supply path, from below the disposition region, and a discharge path that guides the cooling fluid sprayed from the spray holes, toward a discharge port are provided within a body portion of a heat sink. The spray holes are disposed along a resonance direction of a semiconductor laser element disposed in the disposition region, and the discharge path extends in a direction intersecting with the resonance direction of the semiconductor laser element disposed in the disposition region.

Abstract: Disclosed is a laser device including: a laser light source configured to emit laser light; a phase control unit configured to receive the laser light emitted from the laser light source, to control a spatial phase of a portion of the laser light, to emit the portion of the light as control light, and to emit another portion of the laser light as non-control light; a first optical system configured to irradiate an object with the control light emitted from the phase control unit; a detector configured to detect the non-control light emitted from the phase control unit; a second optical system configured to cause the non-control light emitted from the phase control unit to converge toward a detection surface of the detector.

Abstract: An optical module includes: a mirror unit; and a magnet unit including first, second, and third magnets arranged along a first direction. The mirror unit is disposed on the magnet unit in a second direction perpendicular to the first direction. A width of the first magnet is equal to or more than widths of the second and third magnets. An upper surface of the first magnet is located on a mirror unit side with respect to upper surfaces of the second and third magnets in the second direction, or is located at the same position as one of the upper surfaces of the second and third magnets and on the mirror unit side with respect to the other of the upper surfaces of the second and third magnets in the second direction. The mirror unit is fixed to at least the upper surface of the first magnet.

Abstract: The light detector includes: a substrate including at least one light receiving area and a light incident surface on which light is incident; and a meta-lens formed on the light incident surface of the substrate to focus the light incident on the light incident surface. When viewed from the thickness direction (Z-axis direction) of the substrate, the meta-lens is formed so as to overlap both an adjacent region adjacent to the light receiving area and a peripheral region that is continuous with the adjacent region and is a region inside the light receiving area along the outer edge of the light receiving area. When viewed from the Z-axis direction, a non-forming region in which the meta-lens is not formed is provided in a region overlapping a central region of the light receiving area in the light incident surface.

Abstract: An optical module includes: a mirror unit including a mirror device including a movable mirror portion provided with a coil; and a magnet unit including a first magnet, a second magnet, and a third magnet arranged along a first direction, and generating a magnetic field acting on the movable mirror portion. The mirror unit is disposed on the magnet unit in a second direction perpendicular to the first direction, and has a bottom surface facing the magnet unit. A protrusion portion protruding to a magnet unit side is formed on the bottom surface. A width of the protrusion portion in the first direction is equal to or less than a width of the first magnet in the first direction. The mirror unit is fixed to an upper surface of the first magnet at the protrusion portion.

Abstract: A mirror unit 2 includes a mirror device 20 including a base 21 and a movable mirror 22, an optical function member 13, and a fixed mirror 16 that is disposed on a side opposite to the mirror device 20 with respect to the optical function member 13. The mirror device 20 is provided with a light passage portion 24 that constitutes a first portion of an optical path between the beam splitter unit 3 and the fixed mirror 16. The optical function member 13 is provided with a light transmitting portion 14 that constitutes a second portion of the optical path between the beam splitter unit 3 and the fixed mirror 16. A second surface 21b of the base 21 and a third surface 13a of the optical function member 13 are joined to each other.

Abstract: A light detection device includes: a Fabry-Perot interference filter provided with a light transmission region; a light detector configured to detect light transmitted through the light transmission region; a package having an opening and accommodating the Fabry-Perot interference filter and the light detector; and a light transmitting unit arranged on an inner surface of the package so as to close an opening, the light transmitting unit including a band pass filter configured to transmit light incident on the light transmission region. When viewed from a direction parallel to the line, an outer edge of the Fabry-Perot interference filter is positioned outside an outer edge of the opening, and an outer edge of the light transmitting unit is positioned outside the outer edge of the Fabry-Perot interference filter.