Abstract: The object is to provide a technology that can shorten a routing length of a gate wire connecting a control IC that controls driving first and second semiconductor elements that are connected in parallel with each other, to a gate pad of one of the first and second semiconductor elements disposed distant from the control IC. A first semiconductor element and a second semiconductor element are disposed so that a long side of the first semiconductor element faces a side of the second semiconductor element, and a HVIC or a LVIC, the first semiconductor element, and the second semiconductor element are disposed in this order in a direction orthogonal to a first direction, the gate pad is disposed on the first semiconductor element on one side in the first direction, and the gate pad is disposed on the second semiconductor element on the other side in the first direction.

Abstract: An optical transducer for endoscope includes an optical element, an optical fiber, and a fiber holding member including a first holding member including a first principal surface and a second principal surface and a second holding member in which a third principal surface is disposed to face the second principal surface, a first through-hole into which the optical fiber is inserted, being formed in the first holding member, the optical element being mounted on a fourth principal surface. A trench connected to the first through-hole and including openings respectively on opposed two side surfaces is formed on the second principal surface. Only a part of a distal end portion of the optical fiber is observable from the openings of the trench.

Abstract: An endoscope includes: an image pickup device configured to convert image pickup light into an image pickup signal and output the image pickup signal; a light emitting element configured to output an optical signal based on the image pickup signal; a bonded prism including: a first prism including a first reflecting surface configured to reflect the image pickup light and a lower surface that is a first emitting surface configured to emit the image pickup light to the image pickup device; and a second prism including a second reflecting surface configured to reflect the optical signal that is incident from an upper surface and outputted from the light emitting element, the second reflecting surface being bonded with the first reflecting surface; and an optical fiber configured to transmit the optical signal reflected by the second reflecting surface.

Abstract: An optical transducer for endoscope includes an optical element, an optical fiber, and a fiber holding member including a first holding member including a first principal surface and a second principal surface and a second holding member in which a third principal surface is disposed to face the second principal surface, a first through-hole into which the optical fiber is inserted, being formed in the first holding member, the optical element being mounted on a fourth principal surface. A trench connected to the first through-hole and including openings respectively on opposed two side surfaces is formed on the second principal surface. Only a part of a distal end portion of the optical fiber is observable from the openings of the trench.

Abstract: An optical transducer for endoscope includes an optical device, a ferrule including an opaque first holding member including a first principal surface, a second principal surface, and a through-hole, and a transparent second holding member including a third principal surface and a fourth principal surface, the third principal surface of the second holding member abutting on the second principal surface, the optical device being bonded to the fourth principal surface, the third principal surface including a recess including an opening and having a bottom, the recess having the bottom communicating with the through-hole, and an optical fiber provided in the recess through the through-hole.

Abstract: An optical module for endoscope includes an optical element, a wiring board on which the optical element is arranged, and a sealing member including a first recess, the optical element being housed in the first recess and hermetically sealed by a periphery of an opening of the first recess being bonded onto the wiring board with a bonding member composed of glass or low melting point metal, wherein an optical waveguide, composed of glass, that penetrates the sealing member or the wiring board and configures an optical path of an optical signal of the optical element is formed in the sealing member or the wiring board.

Abstract: An endoscope including an image pickup module in a distal end section, wherein the image pickup module including an image pickup unit including an image pickup device, a light emitting element configured to emit an optical signal from a light emission surface, and a ferrule disposed in the image pickup unit, in which the light emission surface is inclined at a first angle of not less than 35 degrees nor more than 55 degrees to the distal end section central axis, a fiber distal end portion is inclined at a second angle of not less than 35 degrees nor more than 55 degrees to the distal end section central axis, and the optical fiber extends toward the distal end section central axis, and is arranged along a bending section central axis in a bending section.

Abstract: An endoscope includes: an image pickup device configured to convert image pickup light into an image pickup signal and output the image pickup signal; a light emitting element configured to output an optical signal based on the image pickup signal; a bonded prism including: a first prism including a first reflecting surface configured to reflect the image pickup light and a lower surface that is a first emitting surface configured to emit the image pickup light to the image pickup device; and a second prism including a second reflecting surface configured to reflect the optical signal that is incident from an upper surface and outputted from the light emitting element, the second reflecting surface being bonded with the first reflecting surface; and an optical fiber configured to transmit the optical signal reflected by the second reflecting surface.

Abstract: An endoscope including an image pickup module in a distal end section, wherein the image pickup module including an image pickup unit including an image pickup device, a light emitting element configured to emit an optical signal from a light emission surface, and a ferrule disposed in the image pickup unit, in which the light emission surface is inclined at a first angle of not less than 35 degrees nor more than 55 degrees to the distal end section central axis, a fiber distal end portion is inclined at a second angle of not less than 35 degrees nor more than 55 degrees to the distal end section central axis, and the optical fiber extends toward the distal end section central axis, and is arranged along a bending section central axis in a bending section.

Abstract: An optical module includes: an optical element having a light emitting portion for emitting optical signals, and an external electrode on a top face; a wiring board having a connection electrode bonded to the external electrode of the optical element on the first main face, and having a through hole serving as an optical path of the optical signals; an optical fiber for transmitting the optical signals arranged at a position coupled optically to the optical element; a resin layer sealing a bonding portion between the external electrode and the connection electrode, constituting a wall surrounding the optical path; and transparent resin filling the optical path. The transparent resin is expanded around the resin layer via at least one gap of the resin layer.

Abstract: An optical transmitter includes an optical device, a wiring board in which the optical device and an electronic component are mounted on a first primary surface, an optical waveguide plate in which an upper surface is bonded to the wiring board and an optical waveguide is photo-coupled with the optical device by a reflection portion, an optical fiber photo-coupled with the optical waveguide, and a conductor, a first groove and a second groove each having an opening in one of side surfaces are provided on the upper surface of the optical waveguide plate, the optical fiber is inserted into the first groove, and the conductor is inserted into the second groove and is bonded to an electrode on a second primary surface of the wiring board immediately above the second groove.

Abstract: To provide a method for enhancing adhesion of a thin film, and a method for enhancing adhesion of a thin film provided with a surface function caused by the shape. Adhesion of a thin film can be enhanced by irradiating the surface of a parent material with a laser beam at a fluence in the vicinity of the machining threshold, scanning the irradiated part while overlapping to form a grating structure, and then forming a solid thin film in the grating structure. When the grating structure formed on the parent material is left on the solid thin film, adhesion of the thin film is enhanced and surface functions, e.g. reduction of friction and wear caused by the shape, suppression of adhesion of fine particles, and cell sensibility, can be exhibited in conjunction with the function of the solid thin film.

Abstract: To provide a method for enhancing adhesion of a thin film, and a method for enhancing adhesion of a thin film provided with a surface function caused by the shape. Adhesion of a thin film can be enhanced by irradiating the surface of a parent material with a laser beam at a fluence in the vicinity of the machining threshold, scanning the irradiated part while overlapping to form a grating structure, and then forming a solid thin film in the grating structure. When the grating structure formed on the parent material is left on the solid thin film, adhesion of the thin film is enhanced and surface functions, e.g. reduction of friction and wear caused by the shape, suppression of adhesion of fine particles, and cell sensibility, can be exhibited in conjunction with the function of the solid thin film.