A power-supply device including: a casing having a space therein and formed by metal stamping or having a thickness ranging from 0.3 to 3.0 mm; and a circuit board disposed inside the casing, wherein the casing includes a casing portion having an opening, and a cover portion disposed to cover the opening of the casing portion, the casing portion has a through hole formed at a position corresponding to a connector terminal connected to the circuit board, and the cover portion includes a storage portion bulging outward from the casing, the storage portion storing either one of an electronic component provided to a face of the circuit board which faces the cover portion and an electronic component provided across the circuit board.

A vehicle lamp forms an additional high-beam light distribution pattern with light emitted though a projection lens from a plurality of light emitting elements. The plurality of light emitting elements are disposed to be aligned in a transverse direction below a rear focal point of the projection lens and can be lit individually. The vehicle lamp forms an additional light distribution pattern by lighting the plurality of light emitting elements at the same time to form a high-beam light distribution pattern. In addition, the vehicle lamp forms another additional light distribution pattern where a part of the additional light distribution pattern is omitted by selectively lighting a part of the plurality of light emitting elements so as to form an intermediate light distribution pattern.

A vehicular lighting apparatus is relatively small, low cost, superior in mountability, and offers a superior design. The vehicular lighting apparatus attachable to a front end of a vehicle includes: a composite lens element that is a light guide element constructed by molding a translucent resin substantially into a plate-like shape; a planar light-emitting unit that emits illumination light; an optical system that transforms planar light from the light-emitting unit into linear light and that causes the linear transformed light to be incident on a rear side face of the light guide element; and a diffraction lens formed on the rear side face of the light guide element on which the linear transformed light is incident, and condensing the linear transformed light. The light condensed by the lens means is emitted from a front side face of the light guide element onto a road surface in front of the vehicle.

Provided is a vehicular lighting apparatus which is relatively small, can be manufactured at low cost, is superior in mountability to an automobile, and is superior in recognizeability of an object illuminated by a head lamp. The vehicular lighting apparatus attachable to a front end part of a vehicle includes: a composite lens element that is a light guide element constructed by molding a translucent resin substantially into a plate-like shape; a planar light-emitting unit that emits illumination light; an optical system that transforms planar light from the light-emitting unit into linear light and that causes the linear transformed light to be incident on a rear side face of the light guide element; and a diffraction lens formed on the rear side face of the light guide element on which the linear transformed light is incident, and condensing the linear transformed light. The light condensed by the lens means is emitted from a front side face of the light guide element onto a road surface in front of the vehicle. The light-emitting element emits whit light including red light.

Lighting module for an automobile, comprising a reflector having at least two surface portions, at least one of the surface portions being movable, and at least two light sources, each light source being associated with one of the surface portions in order to generate a primary light beam by reflection of the light output from said source. The lighting module is configured for a surface portion to be movable and to have a movement which causes a variation in the coverage between the light beams generated by the lighting module.

A vehicle lamp is configured to be able to selectively perform low-beam irradiation and high-beam irradiation. The vehicle lamp includes first and second light-emitting elements and a reflector for reflecting light emitted from these first and second light-emitting elements toward a front. A reflecting surface of the reflector has a first reflection region on which light emitted from the first light-emitting element is incident and a second reflection region on which light emitted from the first light-emitting element is not incident but light emitted from the second light-emitting element is incident. A low-beam light distribution pattern having horizontal and oblique cutoff lines is formed by turning on the first light-emitting element. A high-beam light distribution pattern is formed by turning on the second light-emitting element or simultaneously turning on the first and second light-emitting elements.

In an embodiment, an enclosure comprises walls forming the enclosure, wherein the enclosure comprises an internal space; an inhibiting element disposed in at least one wall, the inhibiting element having an internal inhibiting surface exposed to the internal space, wherein the inhibiting element has a transparency of greater than or equal to 20%; and a condensing element disposed in at least one other wall, the condensing element having an internal condensing surface exposed to the internal space; wherein at least one of the inhibiting element and the condensing element comprise a phase change material configured to form a temperature differential between an internal inhibiting surface temperature and an internal condensing surface temperature over a temperature range, and wherein when the temperature differential is formed, the internal inhibiting surface temperature is greater than the internal condensing surface temperature.

An illumination device (10) includes: laser light sources (20) having different radiant fluxes; and diffractive optical elements (40) provided correspondingly to the respective laser light sources. A planar dimension of the diffractive optical element, which corresponds to the laser light source that emits a laser light having a minimum radiant flux, is smaller than a planar dimension of the diffractive optical element, which corresponds to the laser light source that emits a laser light having a maximum radiant flux.

An illumination device (10) includes: laser light sources (20) having different radiant fluxes; and diffractive optical elements (40) provided correspondingly to the respective laser light sources. A planar dimension of the diffractive optical element, which corresponds to the laser light source that emits a laser light having a minimum radiant flux, is smaller than a planar dimension of the diffractive optical element, which corresponds to the laser light source that emits a laser light having a maximum radiant flux.

An illumination device includes: laser light sources having different radiant fluxes; and diffractive optical elements provided correspondingly to the respective laser light sources. A planar dimension of the diffractive optical element, which corresponds to the laser light source that emits a laser light having a minimum radiant flux, is smaller than a planar dimension of the diffractive optical element, which corresponds to the laser light source that emits a laser light having a maximum radiant flux.