Abstract: A method for manufacturing a resin molding can be provided that uses a laser beam. The method can include providing the resin molding including welded portions that can impart high level of adhesion, have excellent appearance and provide very strong bonding strength. The method can also include arranging and pressing a weld region of a light-absorbing resin member and corresponding weld region of a light-transmitting resin member that are opposed to each other, and setting a plurality of irradiation areas in the extending direction of the welded regions. The method can also include arranging a plurality of laser irradiation scanning heads corresponding to the irradiation areas. Here, the irradiation areas can include a single irradiation area which the corresponding scanning head can irradiate with the laser beam and a composite irradiation area which the adjacent scanning heads can irradiate with respective laser beams.

Abstract: A method for manufacturing a resin molding that uses a laser beam can provide a high level of adhesion, an excellent appearance, and can include very strong welded portions. The method can include preparing a light-transmitting resin member having a protruding portion formed on a rear surface of the light-transmitting resin member and having an end surface, the protruding portion having both side surfaces having asymmetric inclination angles with respect to the normal of the end surface of the protruding portion. The method can also include arranging and pressing together the end surface of the protruding portion that is a welded region of the light-transmitting resin member, and a welded region of a corresponding light-absorbing resin member so that they are opposed to each other. A laser beam can be emitted from a laser light source to be incident on a surface of the light-transmitting resin member while the laser beam is refracted.

Abstract: A vehicle lighting fitting can include a housing including an opening end portion, a lens, an outer peripheral portion of which is laser-welded to the opening end portion to define a lighting chamber, and a decorative member disposed in the lighting chamber. The resin decorative member can include an outer peripheral portion on which a joint portion and a non-joint portion are alternately formed along a perimeter thereof, wherein the joint portion of the decorative member and the opening end portion of the housing are laser-welded in a state in which clearances are maintained between the non-joint portion of the decorative member and the housing, and between the lens and the housing.

Abstract: In manufacturing a resin mold assembly, a first weld region of a light transmitting resin member and a second weld region of a light absorbing resin member are disposed facing each other, the first weld region of the light transmitting resin member and the second weld region of the light absorbing resin member are brought into pressed state in mutually facing direction, and a laser beam is scanned to make the laser beam be incident upon the light transmitting resin member, and repetitively radiated on the second weld region to heat and melt a whole of the first and second weld regions simultaneously, thereby welding the light transmitting resin member and the light absorbing resin member.

Abstract: A vehicle lighting fitting can include a housing including an opening end portion, a lens, an outer peripheral portion of which is laser-welded to the opening end portion to define a lighting chamber, and a decorative member disposed in the lighting chamber. The resin decorative member can include an outer peripheral portion on which a joint portion and a non-joint portion are alternately formed along a perimeter thereof, wherein the joint portion of the decorative member and the opening end portion of the housing are laser-welded in a state in which clearances are maintained between the non-joint portion of the decorative member and the housing, and between the lens and the housing.

Abstract: A method for manufacturing a resin molding can be provided that uses a laser beam. The method can include providing the resin molding including welded portions that can impart high level of adhesion, have excellent appearance and provide very strong bonding strength. The method can also include arranging and pressing a weld region of a light-absorbing resin member and corresponding weld region of a light-transmitting resin member that are opposed to each other, and setting a plurality of irradiation areas in the extending direction of the welded regions. The method can also include arranging a plurality of laser irradiation scanning heads corresponding to the irradiation areas. Here, the irradiation areas can include a single irradiation area which the corresponding scanning head can irradiate with the laser beam and a composite irradiation area which the adjacent scanning heads can irradiate with respective laser beams.

Abstract: A method for manufacturing a vehicle lighting part in accordance with principles of the presently disclosed subject matter can include using a mold including a fixed section, a movable section, and a core section to slide according to a movement of the movable section, and an injection molding unit. The exemplary method can also include putting a first mixture of the molding compound and a chemical foaming agent into the injection molding unit, the molding compound containing polypropylene series resin to which a predetermined amount of talc is added. The method can also include producing a second mixture by enclosing a physical foaming agent in the first mixture in the injection molding unit. Finally, the exemplary method can include injecting the second mixture from the injection molding unit into the mold to fill the mold, and performing a core back of the core section immediately after injecting the second mixture into the mold to fill the mold.

Abstract: A method for manufacturing a resin molding that uses a laser beam can provide a high level of adhesion, an excellent appearance, and can include very strong welded portions. The method can include preparing a light-transmitting resin member having a protruding portion formed on a rear surface of the light-transmitting resin member and having an end surface, the protruding portion having both side surfaces having asymmetric inclination angles with respect to the normal of the end surface of the protruding portion. The method can also include arranging and pressing together the end surface of the protruding portion that is a welded region of the light-transmitting resin member, and a welded region of a corresponding light-absorbing resin member so that they are opposed to each other. A laser beam can be emitted from a laser light source to be incident on a surface of the light-transmitting resin member while the laser beam is refracted.

Abstract: In manufacturing a resin mold assembly, a first weld region of a light transmitting resin member and a second weld region of a light absorbing resin member are disposed facing each other, the first weld region of the light transmitting resin member and the second weld region of the light absorbing resin member are brought into pressed state in mutually facing direction, and a laser beam is scanned to make the laser beam be incident upon the light transmitting resin member, and repetitively radiated on the second weld region to heat and melt a whole of the first and second weld regions simultaneously, thereby welding the light transmitting resin member and the light absorbing resin member.

Abstract: A vehicle light that includes a semiconductor light emitting device can have a simple structure which suppresses deterioration of the light emitting quality of the device. The vehicle light can be configured to prevent aging and/or deterioration of components, such as a vapor deposited silver coating on the reflection surface of a reflector of the light. The vehicle light can also include a projector type optical unit that has the following components: a semiconductor light emitting device; a reflector which surrounds the semiconductor light emitting device from a rear side such that light emitted from the semiconductor light emitting device is reflected in a forward direction; and a projection lens which projects light being directly from the light emitting device or after reflected by the reflector in the forward direction. Furthermore, a space around the semiconductor light emitting device of the optical unit can be hermetically sealed from the outside atmosphere.

Abstract: A vehicle light that includes a semiconductor light emitting device can have a simple structure which suppresses deterioration of the light emitting quality of the device. The vehicle light can be configured to prevent aging and/or deterioration of components, such as a vapor deposited silver coating on the reflection surface of a reflector of the light. The vehicle light can also include a projector type optical unit that has the following components: a semiconductor light emitting device; a reflector which surrounds the semiconductor light emitting device from a rear side such that light emitted from the semiconductor light emitting device is reflected in a forward direction; and a projection lens which projects light being directly from the light emitting device or after reflected by the reflector in the forward direction. Furthermore, a space around the semiconductor light emitting device of the optical unit can be hermetically sealed from the outside atmosphere.

Abstract: A light diffusion/collecting member and a surface light source device can be provided with a simple configuration soas to achieve an easy assembly process and weight reduction. The surface light source device can include light sources arranged within the same plane, and a flat light diffusion/collecting member arranged above the light sources. The light diffusion/collecting member can be composed of a diffusion layer having a diffusion function, a low refractive layer, and a light collecting layer having a light collecting function. These layers can be integrally stacked in this order such that the diffusion layer is the nearest to the light sources. The low refractive layer can be made of a material with a lower refractive index than those of the materials composing the diffusion layer and the light collecting layer.