# US 2021/0278058 A1 · Illumination apparatus for vehicles

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- Number: US 2021/0278058 A1
- Document ID: US20210278058A1
- Status: Published application
- Kind: A1
- Application number: 17/328,652
- Filed: 2021-05-24
- Published: 2021-09-09
- Earliest claimed: 2018-11-23
- Assignees: Hella GmbH & Co. KGaA
- Applicants: HELLA GmbH & Co. KGaA
- Inventors: Martin MUEGGE
- Web page: https://patentgrep.com/patent/US20210278058A1

## CPC

- F21S 43/14: Light emitting diodes [LED]
- B60Q 1/2607: {comprising at least two indicating lamps}
- B60Q 1/30: for indicating rear of vehicle, e.g. by means of reflecting surfaces
- B60Q 1/38: using immovably-mounted light sources, e.g. fixed flashing lamps
- F21S 41/141: Light emitting diodes [LED]
- F21S 41/153: arranged in a matrix
- F21S 41/192: {Details of lamp holders, terminals or connectors}
- F21S 41/332: {with continuity at the junction between adjacent areas}
- F21S 43/252: {Two or more successive light guides}
- F21S 43/26: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255}
- F21S 43/2605: {Refractors}
- F21S 43/315: {using total internal reflection}
- F21S 43/40: characterised by the combination of reflectors and refractors
- B60Q 2400/20: Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp
- F21S 43/15: Strips of light sources
- F21W 2103/10: Position lights
- F21W 2103/20: Direction indicator lights
- F21W 2103/35: Brake lights
- F21W 2103/55: Daytime running lights [DRL]
- F21Y 2107/90: on two opposite sides of supports or substrates
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A lighting assembly for vehicles, having a number of light sources and light guide elements for generating different light functions, with a number of scattering optical elements assigned to the light exit side of the light guide elements for scattering the light. A headlamp lens is arranged at a distance in front of the light guide elements. The first light sources and the second light sources are arranged alternately in the direction of extension of the linear light signature. The scattering optical elements and/or the distance of the headlamp lens to the scattering optical elements and/or a distance in between adjacent first light sources running in the direction of extension are designed such that first light beams exiting in each case from the scattering optical elements assigned to the adjacent first light sources and adjacent in the direction of extension.

## Claims

### Claim 1

A lighting assembly for vehicles, the lighting assembly comprising:
at least two first light sources to generate a first light beam;
at least two second light sources to generate a second light beam, the first light sources and the second light sources emit light of different color and/or luminance in order to generate different light functions and the first light sources being arranged in an extension direction of a linear light signature to generate a first light function and the second light sources being arranged in a direction of extension of a linear light signature to generate a second light function;
light guide elements associated with the first light sources and the second light sources, the light guide elements being arranged so as to extend along the direction of extension of the linear light signature, the light guide elements having a light entry side on a side facing the first light sources or the second light sources and a light exit side on a side facing away from the first light sources or the second light sources;
scattering optical elements associated with the light exit side of the light guide elements to scatter the light; and
a headlamp lens arranged at a distance in front of the light guide elements, which is shaped according to the linear light signature,
wherein the first light sources and the second light sources are arranged alternating in the direction of extension of the linear light signature, and
wherein the scattering optical elements and/or the distance of the headlamp lens to the scattering optical elements, and/or a distance in each case between adjacent first light sources running in the direction of extension and in each case between adjacent second light sources running in the same direction of extension are designed such that in each case first light beams exiting from the scattering optical elements assigned to the adjacent first light sources and adjacent in the direction of extension and in each case second light beams exiting from scattering optical elements assigned to the adjacent second light sources and adjacent in the direction of extension overlap on the headlamp lens or are arranged directly adjacent to one another.

### Claim 2 (depends on 1)

The lighting assembly according to claim 1, wherein the first light sources and the second light sources are controlled such that in the switched-on state of the first light sources or in the switched-on state of the second light sources the entire surface of the headlamp lens is illuminated by the first light beams or by the second light beams, respectively.

### Claim 3 (depends on 1)

The lighting assembly according to claim 1, wherein the light guide elements are designed rotationally symmetrical to an optical axis of the respectively associated first light source or second light source.

### Claim 4 (depends on 1)

The lighting assembly according to claim 1, wherein the light guide element is formed as a TIR lens and that the scattering optical elements are arranged on a light exit surface of the TIR lens or on a front side of a supporting body attached to the front side of the TIR lens or wherein the light guide elements are each designed as lens optics or as reflectors.

### Claim 5 (depends on 1)

The lighting assembly according to claim 1, wherein the scattering optical elements each have a dimension in the range from 0.53 mm to 1 mm.

### Claim 6 (depends on 1)

The lighting assembly according to claim 1, wherein the scattering optical elements are designed such that the first light beam and the second light beam impinge on the headlamp lens between longitudinal edges thereof.

### Claim 7 (depends on 1)

The lighting assembly according to claim 1, wherein the scattering optical elements are integrally connected to the respectively associated light guide element.

### Claim 8 (depends on 1)

The lighting assembly according to claim 1, wherein the first light sources and the second light sources are arranged alternatingly on a single or on two opposite sides of a carrier plate.

### Claim 9 (depends on 1)

The lighting assembly according to claim 1, wherein the headlamp lens has a scattering optic which is formed as cushion-shaped optics or as stripe-shaped optics or as diffuser optics, or as diffractive diffuser optics, or as surface structuring produced by eroding or by etching or by lasering, or in that the headlamp lens formed a volume-scattering material.

### Claim 10 (depends on 9)

The lighting assembly according to claim 9, wherein the scattering optic comprises a plurality of scattering optical elements having a dimension in the range of 0.53 mm to 1 mm.