# US 12,000,568 B2 · Head lamp module for a motor vehicle

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- Number: US 12,000,568 B2
- Document ID: US12000568B2
- Status: Granted
- Kind: B2
- Application number: 17/935,350
- Filed: 2022-09-26
- Published: 2023-01-19
- Granted: 2024-06-04
- Earliest claimed: 2020-04-06
- Assignees: Hella GmbH & Co. KGaA
- Applicants: Hella GmbH & Co. KGaA
- Inventors: David Brunne; Björn Dreßler; Ronny Letzin
- Web page: https://patentgrep.com/patent/US12000568B2

## CPC

- F21S 41/635: {by moving refractors, filters or transparent cover plates}
- F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources}
- F21S 41/141: Light emitting diodes [LED]
- F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device
- F21S 41/192: {Details of lamp holders, terminals or connectors}
- F21S 41/20: characterised by refractors, transparent cover plates, light guides or filters
- F21S 41/24: Light guides
- F21Y 2115/10: Light-emitting diodes [LED]
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- 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 head lamp module for a motor vehicle is provided, and includes one single printed circuit board, a first group of light sources, a second group of light sources, a lens and an optical device. The first group of light sources and the second group of light sources are both arranged on the printed circuit board. The first group of light sources and the second group of light sources emit light to the optical device. The optical device is adapted to guide the emitted light in a direction towards the lens. The light leaves the head lamp module through the lens.

## Claims

### Claim 1

A head lamp module for a motor vehicle, the head lamp module comprising:
one single printed circuit board;
a first group of light sources;
a second group of light sources, wherein the first group of light sources and the second group of light sources are both arranged on the printed circuit board;
a lens;
an optical device formed from a single component, the optical device including a first group of light coupling surfaces, a second group of light coupling surfaces, and a plurality of air channels, wherein the plurality of air channels are each elongated pockets positioned and located between a plurality of geometrical light ways, and wherein the plurality of air channels converge toward the lens;
wherein the first group of light coupling surfaces are positioned and located to receive light emitted from the first group of light sources;
wherein the second group of light coupling surfaces are positioned and located to receive light emitted from the second group of light sources;
wherein the plurality of geometrical light ways are each positioned and located to receive light from one of the light coupling surfaces from the second group of light coupling surfaces;
wherein the optical device is adapted to guide the light emitted from the first group of light sources and the second group of light sources in a direction towards the lens; and
wherein the light leaves the head lamp module through the lens.

### Claim 2 (depends on 1)

The head lamp module according to claim 1, wherein the lens is adapted to assume a first state or a second state, wherein the lens is transferrable from the first to the second state and vice versa, and wherein the lens has a different effect on a light distribution emitted by the headlamp module in the first state than in the second state.

### Claim 3 (depends on 1)

The head lamp module according to claim 1, wherein each light coupling surface of the first group of light coupling surfaces receives light from exactly one single light source of the first group of light sources, and wherein each light coupling surface of the second group of light coupling surfaces receives light from exactly one single light source of the second group of light sources.

### Claim 4 (depends on 1)

The head lamp module according to claim 1, wherein the optical device is dismountable from the head lamp module as a whole.

### Claim 5 (depends on 1)

The head lamp module according to claim 1, wherein the light emitted from the second group of light sources is totally reflected at the interfaces between the geometrical light ways and the air channels.

### Claim 6 (depends on 1)

The head lamp module according to claim 1, wherein the light emitted by the first group of light sources leaves the head lamp module as low beam light.

### Claim 7 (depends on 1)

The head lamp module according to claim 1, wherein the light emitted by the second group of light sources leaves the head lamp module as high beam light.

### Claim 8 (depends on 1)

The head lamp module according to claim 1, wherein the optical device comprises a shutter element, the shutter element limiting a range of light emitted by the first group of light sources.

### Claim 9 (depends on 1)

The head lamp module according to claim 1, wherein the light sources are light emitting diodes.

### Claim 10 (depends on 1)

The head lamp module according to claim 1, wherein the light sources of the second group of light sources are adapted to be switched on and off independently.

### Claim 11

A head lamp module for a motor vehicle, the head lamp module comprising:
one single printed circuit board;
a first group of light sources;
a second group of light sources, wherein the first group of light sources and the second group of light sources are both arranged on the printed circuit board;
a lens;
an optical device formed from a single component, the optical device including a first group of light coupling surfaces, a second group of light coupling surfaces, and a plurality of air channels, wherein the plurality of air channels are elongated pockets positioned and located between a plurality of geometrical light ways, and wherein the plurality of air channels each include a substantially uniform thickness extending along a portion of each air channel;
wherein the first group of light coupling surfaces are positioned and located to receive light emitted from the first group of light sources;
wherein the second group of light coupling surfaces are positioned and located to receive light emitted from the second group of light sources;
wherein the plurality of geometrical light ways are each positioned and located to receive light from one of the light coupling surfaces from the second group of light coupling surfaces;
wherein the optical device is adapted to guide the light emitted from the first group of light sources and the second group of light sources in a direction towards the lens; and
wherein the light leaves the head lamp module through the lens.

### Claim 12

A head lamp module for a motor vehicle, the head lamp module comprising:
one single printed circuit board;
a first group of light sources;
a second group of light sources, wherein the first group of light sources and the second group of light sources are both arranged on the printed circuit board;
a lens;
an optical device formed from a single component, the optical device including a first group of light coupling surfaces, a second group of light coupling surfaces, and a plurality of air channels;
wherein the plurality of air channels are elongated pockets positioned and located between a plurality of geometrical light ways, wherein the plurality of air channels each include a first linear surface and a second linear surface, and wherein the first linear surface and the second linear surface each extend a length that is substantially similar for each air channel from the plurality of air channels;
wherein the first group of light coupling surfaces are positioned and located to receive light emitted from the first group of light sources;
wherein the second group of light coupling surfaces are positioned and located to receive light emitted from the second group of light sources;
wherein the plurality of geometrical light ways are each positioned and located to receive light from one of the light coupling surfaces from the second group of light coupling surfaces;
wherein the optical device is adapted to guide the light emitted from the first group of light sources and the second group of light sources in a direction towards the lens; and
wherein the light leaves the head lamp module through the lens.