F21S41/63

Vehicular lamp
10677406 · 2020-06-09 · ·

The purpose of the present invention is to provide a vehicular lamp which creates light directed upward using a reflector that allows the light incident below the lower end of the lens to exit upward through a lens and which minimizes the uneven light distribution of the created light distribution pattern. The vehicular lamp according to the present invention includes: a semiconductor light source unit (20) including a light-emitting chip (21); a horizontally long lens (30) disposed in front of the light source unit (20); and a reflector (40) positioned between the lens (30) and light source unit (40) and disposed below the light-emitting chip (21) along a vertical direction. The reflector (40) includes a reflection surface (41) for creating a plurality of virtual focal points intersecting a vertical axis passing through the light emitting center O of the light-emitting chip (21). The distribution of light from the reflection surface (41) is controlled so that light is emitted from a light emitting surface (32) vertically below the optical axis Z of the lens (30). The lens (30) is formed such that, when a point light source is assumed on the optical axis Z, first direct light LM on the optical axis Z emitted from the point light source is distributed upward from the light emitting surface (32).

Method for controlling a laser illumination device for a motor vehicle headlight

The invention relates to a method for controlling a laser illumination device for a motor vehicle headlight, wherein the laser illumination device comprises two or more adjustable laser light sources (11 to 18), wherein the number of laser light sources is designated as N, and each laser light source generates a laser beam (11p to 18p) and at least one optical attachment (21 to 28) is arranged downstream of each laser light source and at least one microscanner (51, 52) is assigned, and each microscanner is arranged to guide two or more laser beams onto at least one light conversion means (60), wherein on the at least one light conversion means a luminous image is produced, and an imaging system (PS) is associated with the at least one light conversion means in order to project the luminous image as a light image onto the road, wherein the method includes the following steps: dividing at least a part of the luminous image into luminous strips, wherein the number of luminous strips is designated as n, determining the required luminous flux for each luminous strip, calculating a required width value for each luminous strip with regard to the required luminous flux, and using the calculated width values to change the width of the luminous strip in the light image by changing the luminous strip width on the light conversion means.

CONTROL DEVICE FOR A HEADLIGHT AND METHOD FOR OPERATING A HEADLIGHT

A control device for a headlight for emitting light according to a headlight signal corresponding to an adjustable light distribution. The control device outputs the headlight signal, corresponding to the adjustable light distribution, to the headlight. The control device has an evaluation unit that determines object position data of the object when particles are detected using a detection unit and a self-illuminating object is detected, and to determine, as a function of the object position data, a region in which the object is located. The evaluation unit also generates data for the light distribution as a function of the region in such a way that a light intensity in the region is reduced or increased with respect to a light intensity outside this region, and correspondingly to determine and output the headlight signal from the data for the light distribution.

Adjusting vehicle headlights

A headlight assembly can include a headlight and one or more actuators operatively positioned to cause the position and/or orientation of the headlight to be adjusted. The one or more actuators include a bladder. The bladder can include a flexible casing. The bladder can define a fluid chamber. The fluid chamber can contain a dielectric fluid. The one or more actuators can include a first conductor and a second conductor operatively positioned on opposite portions of the bladder. The one or more actuators can be configured such that, when electrical energy is supplied to the first conductor and the second conductor, the first conductor and the second conductor can become oppositely charged. As a result, the first conductor and the second conductor are electrostatically attracted toward each other to cause at least a portion of the dielectric fluid to be displaced to an outer peripheral region of the fluid chamber.

Vehicular lamp

A headlight includes light sources, and phase modulation elements that diffract lights incident from the light sources with changeable phase modulation patterns. The lights diffracted by the phase modulation elements are emitted with a low beam light distribution pattern that is a predetermined light distribution pattern based on the phase modulation patterns. A projection region on which zeroth order lights, that are emitted from the phase modulation elements without being diffracted by the phase modulation elements, among the lights incident on the phase modulation elements, are projected is located within a range where a driver's view of a vehicle is obstructed by the vehicle.

Lighting device and method for generating an improved matrix beam uniformity

A headlamp for a vehicle. The headlamp uses individual light emitting didoes or LEDs to generate individual light beams, which collectively form a composite beam. Because of manufacturing irregularities, some of the individual beams overlap neighboring beams, and form bright spots within the composite beam, which are not desirable. It is possible to de-focus the individual beams, to thereby spread out the bright spots, and reduce their intensities. However, that de-focusing would conflict with another goal. When the vehicle follows another vehicle, some individual beams which would apply glare to the other vehicle are shut off. But it is desirable that the remaining active individual beams which flank the other vehicle have sharply defined edges. De-focusing would soften the edges. Therefore, one form of the invention selectively de-focuses individual beams only when they are not adjacent individual beams which are active.

Lighting device and method for generating an improved matrix beam uniformity

A headlamp for a vehicle. The headlamp uses individual light emitting didoes or LEDs to generate individual light beams, which collectively form a composite beam. Because of manufacturing irregularities, some of the individual beams overlap neighboring beams, and form bright spots within the composite beam, which are not desirable. It is possible to de-focus the individual beams, to thereby spread out the bright spots, and reduce their intensities. However, that de-focusing would conflict with another goal. When the vehicle follows another vehicle, some individual beams which would apply glare to the other vehicle are shut off. But it is desirable that the remaining active individual beams which flank the other vehicle have sharply defined edges. De-focusing would soften the edges. Therefore, one form of the invention selectively de-focuses individual beams only when they are not adjacent individual beams which are active.

Light distribution element for light emitting device and light emitting device
10605435 · 2020-03-31 · ·

A light distribution element for a light emitting device, including a plurality of first light deflecting portions and a plurality of second light deflecting portions, wherein a pattern formed by the plurality of first light deflecting portions is superposed with a pattern formed by the plurality of second light deflecting portions to form a final display pattern. The present invention also provides a light emitting device including the light distribution element. According to the light distribution element and the light emitting device provided by the present invention, it is possible to generate a personalized, three-dimensional, dynamic lighting effect.

Lighting device and traveling body using same

There is provided a lighting device capable of forming a line beam having a sufficiently long length in an irradiation direction. A distance between a light source end close to irradiation surface and irradiation surface is greater than a distance between lens center and irradiation surface by using light source in which a plurality of light emitters is arranged in a straight line and lens of which an emission surface having a constant curvature is corrected by an odd function. Accordingly, a shape of light source is formed on irradiation surface, and thus, it is possible to form line beam having the sufficiently long length in the irradiation direction.

Illumination device for motor vehicle headlight or motor vehicle
11878623 · 2024-01-23 · ·

Illumination device, for a motor vehicle headlight, has an illuminant and an optical device associated therewith. The optical device has adjustment means to adjust operating states (OS) of the optical device. In a first OS, the optical device forms a first light function with light of the illuminant. In a second OS, the optical device forms a second light function different from the first light function with light of the illuminant. The illuminant includes light sources spaced apart from one another, and the optical device has scattering elements to scatter the light of the light sources. The adjustment means is configured to adjust the optical device such that in the first OS, the optical device has a first normal distance to the light sources and, in the second OS, has a second normal distance to the light sources, wherein the second normal distance is greater than the first normal distance.