A projection optical instrument includes a light source unit, a projection optical member and a support part. The light source unit emits light. The projection optical member transforms the light emitted from the light source unit into projection light. The support part supports the projection optical member to be movable with respect to the light source unit in at least one direction orthogonal to an optical axis direction of the light source unit. When vibration is applied to at least one of the light source unit and the projection optical member, the projection optical member accordingly vibrates with respect to the light source unit in a direction orthogonal to the optical axis direction of the light source unit.

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 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 predetermined lighting pattern is projected on a surface to be illuminated and the lighting pattern is displaced on the surface to be illuminated. A laser beam generated by a laser light source is broadened by a magnifying lens so as to generate a divergent light. The divergent light is shaped by the collimation lens into a parallel illumination light, and the parallel illumination light is caused to be incident on an incident plane of a diffraction optical element which records a hologram image. A diffracted light from the diffraction optical element forms the lighting pattern as a hologram reconstructed image on the surface to be illuminated. By translating the collimation lens by a collimation-lens drive unit along a movement plane that is orthogonal to an optical axis of the laser beam, the lighting pattern can be displaced on the surface to be illuminated.

A headlight assembly (126) for a mower (100) includes a cover member (302) defining an aperture (306). A first light source (308) is at least partially received within the aperture (306). The first light source (308) illuminates a first area (202) in front of the mower (100). A second light source (408) is coupled to the cover member (302). The second light source (408) illuminates a second area (204) extending at least partially around the mower (100).

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.

A vehicle front headlight device includes a light source, a rotating mirror that is configured by disposing a first minor body and a second mirror body around a circumferential direction of a shaft, that is rotationally driven about the shaft and rotates while reflecting light emitted by the light source, a lens that transmits light reflected by the rotating mirror so as to illuminate the light forward, and a controller for controlling rotational drive of the rotating mirror. A first illuminated region of light that is reflected by the first mirror body and that is radiated forward through the lens, and a second illuminated region of light that is reflected by the second mirror body and that is radiated forward through the lens, are offset from each other in a vehicle width direction or in a vehicle vertical direction.

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 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 front headlight device includes a light source, a rotating mirror that is configured by disposing a first mirror body and a second mirror body around a circumferential direction of a shaft, that is rotationally driven about the shaft and rotates while reflecting light emitted by the light source, a lens that transmits light reflected by the rotating mirror so as to illuminate the light forward, and a controller for controlling rotational drive of the rotating mirror. A first illuminated region of light that is reflected by the first mirror body and that is radiated forward through the lens, and a second illuminated region of light that is reflected by the second mirror body and that is radiated forward through the lens, are offset from each other in a vehicle width direction or in a vehicle vertical direction.