Method for controlling a headlamp

Patent metadata

Field	Value
Publication number	US-9663024-B2
Application number	US-201414246746-A
Country	US
Kind code	B2
Filing date	Apr 7, 2014
Priority date	Apr 6, 2013
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A method is disclosed for controlling a headlight in a motor vehicle. The method includes providing a headlight configured to emit a light distribution in a selectively controlled manner, and controlling the headlight to generate a dynamic wave effect in at least one sub-region in front of the vehicle within the illuminated light distribution.

First claim

What is claimed is:

1. A method for controlling the illuminated light distribution of a headlight in a region in front of a motor vehicle comprising:
determining, by a processor, at least one first sub-region in front of the motor vehicle without a pedestrian and at least one second sub-region in front of the motor vehicle where a pedestrian is located;
controlling, by the processor, the headlight to generate a substantially fixed light distribution in the at least one first sub-region and to generate a dynamically changing sinusoidal light distribution in the at least one second sub-region by locally changing the brightness of a light beam emitted by the headlight within the at least one second sub-region over time.

2. The method according to claim 1 , further comprising generating the dynamically changing sinusoidal light distribution within the at least one second sub-region with a plurality of light sources arranged in the headlight.

3. The method according to one of claims 2 , further comprising selectively controlling the plurality of light sources to generate the dynamically changing sinusoidal light distribution.

4. The method according to claim 1 , further comprising:
determining, by the processor, at least one third sub-region in front of the motor vehicle containing an object; and
controlling, by the processor, the headlight to generate the dynamically changing sinusoidal light distribution in the at least one third sub-region.

5. The method according to claim 1 , further comprising:
determining, by the processor, at least one third sub-region in front of the motor vehicle containing a desired direction of travel of the motor vehicle; and
controlling, by the processor, the headlight to generate the dynamically changing sinusoidal light distribution in the at least one third sub-region.

6. The method according to claim 1 , wherein the processor is configured to determine at least one first sub-region and the at least one second sub-region based upon data from a detector selected from the group consisting of a camera system, a radar system, a navigation system, a driving direction system, and combinations thereof.

7. The method according to claim 1 , wherein the dynamically changing sinusoidal light distribution comprises a wave effect within the at least one second sub-region in a preferred direction.

8. The method according to claim 1 , wherein the dynamically changing sinusoidal light distribution comprises a light/dark contrast of the light sources delineated from each other in their respective light distribution edge region.

9. A headlight assembly for a motor vehicle comprising:
a processor configured to determine at least one first sub-region in front of the motor vehicle without a pedestrian and at least one second sub-region in front of the motor vehicle where a pedestrian is located; and
a headlamp having a plurality of independently controllable light sources,
wherein the processor is further configured to control the plurality of light sources to generate a substantially fixed light distribution in the at least one first sub-region and to generate a dynamically changing sinusoidal light distribution in the at least one second sub-region over time.

10. The headlight assembly according to claim 9 , wherein the processor is further configured to determine at least one third sub-region in front of the motor vehicle containing an object and to control the plurality of light sources to the dynamically changing sinusoidal light distribution in the at least one third sub-region.

11. The headlight assembly according to claim 9 , wherein the processor is further configured to determine at least one third sub-region in front of the motor vehicle containing a desired direction of travel of the motor vehicle, and to control the plurality of light sources to the dynamically changing sinusoidal light distribution in the at least one third sub-region.

12. The headlight assembly according to claim 9 , wherein the processor is configured to determine the at least one first sub-region and the at least one second sub-region based upon data from a detection device selected from the group consisting of a camera system, a radar system, a navigation system, a driving direction system, and combinations thereof.

13. The headlight assembly according to claim 9 , wherein the dynamically changing sinusoidal light distribution comprises a wave effect in a preferred direction.

14. The headlight assembly according to claim 9 , wherein the dynamically changing sinusoidal light distribution comprises a light/dark contrast of the light sources delineated from each other in their respective light distribution edge region.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Roeckl Philipp
• Feid Thomas
• Langkabel Frank
• Schneider Ingolf

Classifications

• B60Q1/1423 Primary

  Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic · CPC title

• B60Q2300/45

  Special conditions, e.g. pedestrians, road signs or potential dangers · CPC title

• B60Q1/143

  combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers · CPC title

• B60Q1/085 Primary

  due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers (B60Q1/10, B60Q1/12, B60Q1/1423 take precedence) · CPC title

• B60Q2300/054

  Variable non-standard intensity, i.e. emission of various beam intensities different from standard intensities, e.g. continuous or stepped transitions of intensity · CPC title