Abstract: A vehicular lighting tool of the present invention includes light source and light guide lens, the light guide lens has introduction section into which light is introduced, light distribution section that emits introduced light as illumination light, decoration section that emits introduced light as decoration light, and slit section that separates introduction section and decoration section, and introduction section has light incidence surface into which light from light source enters, lens cut that emits portion of light from light source and that causes portion of light to enter decoration section via slit section, first inclined surface located closer to light distribution section than lens cut, second inclined surface that connects first inclined surface and decoration section, and reflection cut surface provided on surface opposite to slit section and that reflects portion of light entering from light incidence surface so as to advance along second inclined surface.

Abstract: A semiconductor light-emitting device includes a first bonding pattern made of metal that is formed on a substrate, and a second bonding pattern provided in a base portion and a flange portion of a dome-shaped transparent body. The first and second bonding patterns are bonded to each other via solder, to seal a space in a convex lid portion. The first and second bonding patterns have rectangular ring shapes that surround the semiconductor light-emitting element when viewed from above, at least edges on inner peripheral sides of corner portions thereof are positioned on outer sides of outer peripheral edges of an annular base portion of the convex lid portion, and edges on inner peripheral sides of straight-line portions sandwiched between the corner portions are positioned closer to the semiconductor light-emitting element than the outer peripheral edge of the annular base portion of the convex lid portion.

Abstract: In an illumination device, an incidence angle of a laser beam, which is scanned by a laser beam scanning mechanism, with respect to a wavelength conversion member is set to an angle where the laser beam does not directly enter a projection lens when the wavelength conversion member is damaged, chipped or fallen off, and a laser light source and the laser beam scanning mechanism are located at a position corresponding to at least one of an upper side and a lower side of a light distribution pattern with respect to the wavelength conversion member, and are disposed to be deviated to either one of one side corresponding to a left side of the light distribution pattern and other side corresponding to a right side of the light distribution pattern.

Abstract: A vehicle lamp includes a plurality of light source modules that includes light sources including a plurality of light emitting elements that emit different colors of light and lens bodies disposed in front of the light sources, and the plurality of light source modules are disposed in a matrix manner in a plane to constitute at least one light emitting area.

Abstract: A semiconductor light emitting device 10 includes: a resin frame 11 having an opening 20; a lead frame 12 having leads 12a and 12b exposed in the opening 20; and an LED 28 placed in the opening 20 and connected to the leads 12a and 12b. Standing parts 18a are erected on an upper surface 23a of the lead 12a. The standing parts 18a are embedded in the resin of the frame 11.

Abstract: An image display system includes a projector that is mounted on a target vehicle and projects an image onto a road surface around the target vehicle, and an image controller that causes the projector to project a support image onto the road surface around the target vehicle when another vehicle traveling behind the target vehicle starts an operation of overtaking the target vehicle, and the support image includes at least one of an image showing a no-entry area which the other vehicle is prohibited from entering and an image showing a passage area through which the other vehicle is to pass during the overtaking operation.

Abstract: A lighting device includes a laser light source configured to emit a laser beam, a wavelength conversion member including a laser beam irradiation region to which the laser beam is radiated and configured to emit a wavelength converted light excited by radiation of the laser beam, a laser beam scanning mechanism configured to form a light distribution pattern according to a scanning range of the laser beam by scanning the laser beam radiated to the laser beam irradiation region, and a projection lens configured to project illumination light that forms a light distribution pattern forward, and an incidence angle of the laser beam, which is scanned by the laser beam scanning mechanism, with respect to the wavelength conversion member is set to an angle where the laser beam does not directly enter the projection lens when the wavelength conversion member is damaged, chipped or fallen off.

Abstract: A method for manufacturing a GaN-based surface-emitting laser by an MOVPE includes: (a) growing a first cladding layer with a {0001} growth plane; (b) growing a guide layer on the first cladding layer; (c) forming holes which are two-dimensionally periodically arranged within the guide layer; (d) etching the guide layer by ICP-RIE using a chlorine-based gas and an argon; (e) supplying a gas containing a nitrogen to cause mass-transport, and then supplying the group-III gas for growth, whereby a first embedding layer closing openings of the holes is formed to form a photonic crystal layer; and (f) growing an active layer and a second cladding layer on the first embedding layer, The step (d) includes a step of referring to already-obtained data on a relationship of an attraction voltage and a ratio of gases in the ICP-RIE with a diameter distribution of air holes embedded, and applying the attraction voltage and the ratio to the ICP-RIE.

Abstract: An optical scanning device includes an optical deflector, a driving unit, and a detection unit. The optical deflector has a mirror part and an H actuator. The driving unit supplies both of a first driving voltage and a second driving voltage to a first set of piezoelectric divided sections and a second set of piezoelectric divided sections of the H actuator during a first driving period, and supplies the driving voltage only to one set out of the first set and the second set of piezoelectric divided sections during a second driving period. The detection unit detects a deflection angle ? based on the output voltage of the other set of piezoelectric divided sections during the second driving period.

Abstract: A piezoelectric actuator is formed like a rectangular flat plate, and includes a substrate layer, a lower electrode layer, a piezoelectric layer, and an upper electrode layer formed in this order from bottom to top in a thickness direction. The upper electrode layer is constituted of a plurality of electrode segments separated in a surface direction, and connection wires connecting the electrode segments which are adjoining in the surface direction.

Abstract: A vehicular lamp fitting includes: a structure including a lamp housing and an outer lens attached to the lamp housing and forming a first space between the outer lens and the lamp housing; a lamp unit disposed in the first space; and the outer lens includes a recess recessed toward the lamp housing; wherein the vehicular lamp fitting further comprises: a radar cover that is detachably fixed to the structure in a state of covering the recess, and forms a second space between the radar cover and the recess; a bracket including one end detachably fixed to the structure, its opposite other end detachably fixed to the structure, and a bracket body provided between the one end and the other end and disposed in the second space; and a radar unit disposed in the second space in a state of detachably being fixed to the bracket body.

Abstract: A vehicular lamp fitting and the like capable of preventing (or suppressing) vibrations of a radar unit (and as a result, capable of preventing the detection area of the radar unit from being significantly changed) are provided. A vehicular lamp fitting includes: a lamp housing; an outer lens attached to the lamp housing, the outer lens including a recessed part and forming a first space between the outer lens and the lamp housing; a lamp unit disposed in the first space; a radar cover disposed while covering the recessed part, and forming a second space between the radar cover and the recessed part; a bracket disposed in the second space; a radar unit detachably fixed to the bracket; and a first fixing part fixing one end of the bracket to the outer lens; and a second fixing part fixing the other end of the bracket to the lamp housing.

Abstract: A vehicular lamp fitting and the like capable of preventing the distance between a radar unit and the radar cover from changing are provided. A vehicular lamp fitting includes: a lamp housing; an outer lens attached to the lamp housing while covering an opening of the lamp housing, and forming a first space between the outer lens and the lamp housing; a lamp unit disposed in the first space; a radar housing; a radar cover attached to the radar housing while covering an opening of the radar housing, and forming a second space between the radar cover and the radar housing; a radar unit disposed in the second space; a first fixing part fixing the radar unit to the radar housing; and a second fixing part fixing the radar cover to the radar housing.

Abstract: A vehicular lamp fitting and the like in which a radar unit can be replaced without replacing the whole vehicular lamp fitting are provided. A vehicular lamp fitting includes a lamp housing, an outer lens attached to the lamp housing and forming a lamp chamber between the outer lens and the lamp housing, a lamp unit disposed in the lamp chamber, a bracket, and a radar unit detachably fixed to the bracket.

Abstract: A surface-emitting laser element includes: a first guide layer including a photonic crystal layer that is formed on a c plane of a group-3 nitride semiconductor and includes air holes arranged with two-dimensional periodicity in a plane parallel to the photonic crystal layer, and an embedding layer that is formed on the photonic crystal layer and closes the air holes; an active layer formed on the first guide layer; and a second guide layer formed on the active layer, wherein an air hole set including at least a main air hole and a sub-air hole smaller in size than the main air hole is arranged at each square lattice point in the plane parallel to the photonic crystal layer, and wherein the main air hole has a regular-hexagonal prism shape, a long-hexagonal prism shape, or an elliptic cylindrical shape with a major axis parallel to a <11-20> axis.

Abstract: A vehicular lamp fitting and the like in which a radar unit can be replaced without replacing the whole vehicular lamp fitting are provided. A vehicular lamp fitting includes a lamp housing, an outer lens attached to the lamp housing and forming a lamp chamber between the outer lens and the lamp housing, a lamp unit disposed in the lamp chamber, a bracket, and a radar unit detachably fixed to the bracket.

Abstract: A lamp device suppresses attenuation and reflection of a radar wave attributable to a light guide body, does not change an electromagnetic wave radiation pattern, and does not impair a radar function. The lamp device includes: a light guide body covering a part of an electromagnetic wave radiation surface of a radar device; and a light source, wherein, when the thickness of the light guide body is denoted by TG, and the wavelength of a radiated electromagnetic wave from the radar device in the light guide body is denoted by ?d, TG is set such that TG<?d/2 is satisfied when the reflection loss of the light guide body with respect to the radiated electromagnetic wave is below a transmission loss, and a reflection loss is ?10 dB or less when the reflection loss is equal to or more than a transmission loss.

Abstract: A vehicle lamp has a light guiding body having a light guide section having a dimension in which a dimension in one direction perpendicular to an optical axis of the light emitted from the light source is smaller than a dimension in other direction perpendicular to the optical axis and the one direction, an incidence section that causes the light emitted from the light source to enter the light guide section, and an emission section that emits the light guided inside of the light guide section to outside of the light guide section, the shade has an opening section through which light that has entered the incidence section passes, and at a cross section in the one direction, the optical axis is located at a position offset toward one side in the one direction with respect to a central axis of the light guide section.

Abstract: A projection lens has a first lens body including a first incidence section located at a side facing a first light source and an emission section located at a side opposite to the first incidence section, and a second lens body including a second incidence section located at a side facing the second light source, a refractive index of the second lens body is smaller than a refractive index of the first lens body, and a structure in which the first lens body and the second lens body abut each other while having first boundary surfaces, which are provided between the emission section and the second incidence section, and second boundary surfaces, which are provided between the first incidence section and the second incidence section from a boundary line with respect to the first boundary surfaces, interposed therebetween is provided.

Abstract: An optical scanning device includes a control unit, a light deflector, light detection units, and a light source. A mirror unit of the light deflector has a flat reflection part for generating scanning light and a groove-shaped reflection part for generating twice reflected light, and performs reciprocating rotation about a rotation axis. The light detection units are disposed at positions on the scanning trajectory of the scanning light where the twice reflected light is received, and are each divided into light detectors in the scanning direction of the scanning light by a division line. The control unit detects the deflection angle ? of the mirror unit based on both the output of the light detector and the output of the light detector.