A light irradiation device includes a light source, an optical member and a sensor. The light source emits light. The optical member is supported so as to rotate around a rotation axis and includes a prism part that emits detection light based on the light. The sensor receives the detection light and detects a light amount of the detection light. The light amount of the detection light received by the sensor changes depending on a position of the optical member in a rotation direction when the optical member rotates.

A vehicle headlamp (1) includes: a light source (52R, 52G, 52B) that emits light having a predetermined wavelength; a light distribution pattern forming optical system (56R, 56G, 56B) that includes a collimator lens (53R, 53G, 53B) and a diffraction grating (54R, 54G, 54B) that change a traveling direction of at least some of pieces of light emitted from the light source (52R, 52G, 52B), and emits light (L.sub.R, L.sub.G, L.sub.B) having a predetermined light distribution pattern; and a vibration imparting unit (57R, 57G, 57B) that relatively vibrates the light source (52R, 52G, 52B) and the diffraction grating (54R, 54G, 54B).

A vehicle headlamp (1) includes: a light source (52R, 52G, 52B) that emits light having a predetermined wavelength; a light distribution pattern forming optical system (56R, 56G, 56B) that includes a collimator lens (53R, 53G, 53B) and a diffraction grating (54R, 54G, 54B) that change a traveling direction of at least some of pieces of light emitted from the light source (52R, 52G, 52B), and emits light (L.sub.R, L.sub.G, L.sub.B) having a predetermined light distribution pattern; and a vibration imparting unit (57R, 57G, 57B) that relatively vibrates the light source (52R, 52G, 52B) and the diffraction grating (54R, 54G, 54B).

A lighting module and a headlamp for vehicle lighting are provided. The lighting module includes a dynamic bending light module; and a lens that is situated in operative relationship with the dynamic bending light module; wherein the lens has a thin aspect.

A mobile lighting device includes a housing unit inserted into a vehicle body, a light source unit mounted in the housing unit and configured to generate light, a lens unit mounted in the housing unit and configured to transmit the light generated in the light source unit, and a drive unit configured to move the housing unit in such a manner that the lens unit is selectively inserted into y or protrudes out of the vehicle body.

The invention relates to a motor vehicle headlight (1) comprising a light module having a plurality of light sources (110, 120, 130) and a plurality of primary optics (210, 220, 230), wherein the light sources (110, 120, 130) each have a light-emitting surface (111 121, 131) and are arranged on a common circuit board (50). The circuit board (50) has a circuit board reference point and a light reference plane, wherein the light reference plane is defined by at least three light reference points, and the circuit board reference point lies in the light reference plane. The primary optics (210, 220, 230) each have a light-incoupling surface (211, 221, 231) and a light-outcoupling surface (212, 222, 232), and are held in position by a common holder (60). The holder (60) has a holder reference point and an optics reference plane, which is defined by at least three optics reference points (21, 22, 23) and in which the holder reference point also lies. At least three spacer means (41, 42) are arranged between the circuit board (50) and the holder (60) at the respective light reference points and optics reference points.

A vehicle lamp is provided with a light source (51) that emits light in a predetermined wavelength band, a diffractive optical element (53) that diffracts the light emitted from the light source (51) to have a predetermined light distribution pattern, and a shade (55) that shields, of the light forming the predetermined light distribution pattern, at least part of the light forming the outer peripheral portion of the predetermined light distribution pattern, and the shade (55) shields the light forming the outer peripheral portion of the predetermined light distribution pattern over the entire circumference of the light distribution pattern.

A vehicle lamp is provided with a light source (51) that emits light in a predetermined wavelength band, a diffractive optical element (53) that diffracts the light emitted from the light source (51) to have a predetermined light distribution pattern, and a shade (55) that shields, of the light forming the predetermined light distribution pattern, at least part of the light forming the outer peripheral portion of the predetermined light distribution pattern, and the shade (55) shields the light forming the outer peripheral portion of the predetermined light distribution pattern over the entire circumference of the light distribution pattern.

A headlamp of a motor vehicle that uses individual light emitting diodes or LEDs to generate individual light beams, which collectively form a composite beam where some of the individual beams overlap neighboring beams because of manufacturing irregularities and form bright spots within the composite beam, which are not desirable. It is possible to de-focus the irregularities from individual beams to thereby spread out the bright spots, and reduce their intensities with another inventive goal to selectively defocus individual beams and soften the edges that apply glare to surrounding vehicles when individual beams are not adjacent individual beams or individual beams that are active and flank surrounding vehicles to be shut off.

A headlamp of a motor vehicle that uses individual light emitting diodes or LEDs to generate individual light beams, which collectively form a composite beam where some of the individual beams overlap neighboring beams because of manufacturing irregularities and form bright spots within the composite beam, which are not desirable. It is possible to de-focus the irregularities from individual beams to thereby spread out the bright spots, and reduce their intensities with another inventive goal to selectively defocus individual beams and soften the edges that apply glare to surrounding vehicles when individual beams are not adjacent individual beams or individual beams that are active and flank surrounding vehicles to be shut off.