Automatic lighting system with adaptive alignment function

• US 7,914,187 B2
• Filed: 07/11/2008
• Issued: 03/29/2011
• Est. Priority Date: 07/12/2007
• Status: Active Grant

• Current Assignee: Magna Electronics Incorporated (Magna International Incorporated)
• Original Assignee: Magna Electronics Incorporated (Magna International Incorporated)
• Inventors: Ince, William C., Higgins-Luthman, Michael J., Lu, Yuesheng
• Primary Examiner(s): Ward; John A
• APPLICATION: US 20090016073A1
• Time in patent office: 991 Days
• Field of Search: 362/464, 362/465, 362/466, 382/100, 382/103, 382/104, 382/117
• US Class Current: 362/465
• CPC Class Codes: B60Q 1/085 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 Class Codes: B60Q 1/245 using spotlights adjustable from within the vehicle adjustable headlights B60Q1/06
• CPC Class Codes: B60Q 2300/23 Driver's line of sight
• CPC Class Codes: B60Q 2300/45 Special conditions, e.g. pedestrians, road signs or potential dangers

Abstract

An automatic lighting system for a vehicle includes a detection device, an illumination source and a control. The illumination source is directed generally forwardly with respect to a direction of travel of the vehicle, and has an adjustable principal axis of illumination. The detection device may be operable to determine a gaze direction of a driver or driving instructor of a vehicle or may detect a sign or other object of interest, such as a deer or pedestrian or the like, generally forwardly and sidewardly of the vehicle. The control is operable to adjust the principal axis of illumination of the illumination source in response to an output of the detection device so as to provide enhanced illumination at areas sideward and forward of the vehicle.

Claims

1. An automatic lighting system for a vehicle, said automatic lighting system comprising:

a gaze detection device operable to determine a gaze direction of a driver or driving instructor of a vehicle;

an illumination source directed generally forwardly with respect to a direction of travel of the vehicle, said illumination source having an adjustable principal axis of illumination; and

a control operable to adjust said principal axis of illumination of said illumination source in response to an output of said gaze detection device, said control adjusting said principal axis of illumination of said illumination source to direct illumination toward an area where the driver or driving instructor of the vehicle is looking.

2. The automatic lighting system of claim 1, wherein said area is generally forwardly and sidewardly of the vehicle.

3. The automatic lighting system of claim 1, wherein said gaze detection device comprises an imaging device for capturing images, said imaging device having a field of view directed generally toward the head of a driver or driving instructor of the vehicle, wherein an image processing device processes image data to determine the gaze direction of the driver or driving instructor of the vehicle.

4. The automatic lighting system of claim 1, wherein said illumination source is generally centrally located at a forward portion of the vehicle.

5. The automatic lighting system of claim 1, wherein said automatic lighting system is selectively enabled, disabled or partially enabled in response to an output of at least one of (a) a human-machine interface, (b) an intelligent headlight system which detects vehicles in front of the host vehicle, (c) a Global Positioning System, (d) a roadside information system, (e) the internet, (f) an intelligent transportation system, (g) a communication system, (h) a telematics system, and (i) a navigation system.

6. The automatic lighting system of claim 1, wherein said control is operable to adjust said principal axis of illumination of said illumination source in a horizontal direction and a vertical direction.

7. An automatic lighting system for a vehicle, said automatic lighting system comprising:

an imaging device for capturing images, said imaging device having a field of view directed generally forwardly with respect to a direction of travel of the vehicle;

a control operable to process image data to determine if an object of interest is present generally forwardly and sidewardly of the vehicle as the vehicle travels along a road;

an illumination source directed generally forwardly with respect to the direction of travel of the vehicle; and

wherein said control is operable to adjust said illumination source in response to a detection of an object of interest generally forwardly and sidewardly of the vehicle, said control adjusting said illumination source to direct illumination toward an area encompassing the detected object of interest when the object of interest is detected.

8. The automatic lighting system of claim 7, wherein said imaging device captures at least one image of the object of interest when the object of interest is illuminated by said illumination source, and wherein said control processes image data to determine or recognize characteristics of the detected object of interest.

9. The automatic lighting system of claim 8, wherein the detected object of interest comprises a sign and wherein said control processes image data to determine or recognize characters on the sign.

10. The automatic lighting system of claim 8, wherein said control processes image data to determine or recognize relevant aspects of the detected object of interest including at least one of (a) a size of the detected object of interest, (b) a shape of the detected object of interest, (c) a distance to the detected object of interest, and (d) a direction toward the detected object of interest.

11. The automatic lighting system of claim 7, wherein said illumination source has an adjustable principal axis of illumination, and wherein said control is operable to adjust said principal axis of illumination of said illumination source in response to the detection of the object of interest, said control adjusting said principal axis of illumination of said illumination source to direct illumination toward an area encompassing the detected object of interest.

12. The automatic lighting system of claim 11, wherein said control is operable to adjust said principal axis of illumination of said illumination source in a horizontal direction and a vertical direction.

13. The automatic lighting system of claim 7, wherein said control flashes said illumination source in response to detection of the object of interest.

14. The automatic lighting system of claim 7, wherein said automatic lighting system is selectively enabled and disabled in response to an output of at least one of (a) a human-machine interface, (b) an intelligent headlight system which detects vehicles in front of the host vehicle, (c) a Global Positioning System, (d) a roadside information system, (e) the internet, (f) an intelligent transportation system, (g) a communication system, (h) a telematics system, and (i) a navigation system.

15. An automatic lighting system for a vehicle, said automatic lighting system comprising:

a gaze detection device operable to determine a gaze direction of a driver or driving instructor of a vehicle, wherein said gaze detection device comprises an imaging device for capturing images, said imaging device having a field of view directed generally toward the head of a driver or driving instructor of the vehicle, wherein an image processing device processes image data to determine the gaze direction of the driver or driving instructor of the vehicle;

an illumination source directed generally forwardly with respect to a direction of travel of the vehicle, said illumination source having an adjustable principal axis of illumination; and

a control operable to adjust said principal axis of illumination of said illumination source in response to an output of said gaze detection device, said control adjusting said principal axis of illumination of said illumination source to direct illumination toward an area where the driver or driving instructor of the vehicle is looking, wherein said area is generally forwardly and sidewardly of the vehicle.

16. The automatic lighting system of claim 15, wherein said automatic lighting system is selectively enabled, disabled or partially enabled in response to an output of at least one of (a) a human-machine interface, (b) an intelligent headlight system which detects vehicles in front of the host vehicle, (c) a Global Positioning System, (d) a roadside information system, (e) the internet, (f) an intelligent transportation system, (g) a communication system, (h) a telematics system, and (i) a navigation system.

17. The automatic lighting system of claim 15, wherein said control is operable to adjust said principal axis of illumination of said illumination source in a horizontal direction and a vertical direction.

18. The automatic lighting system of claim 15 further comprising a second imaging device for capturing images, said second imaging device having a field of view directed generally forwardly with respect to a direction of travel of the vehicle, wherein said control is operable to process image data to determine if an object of interest is present generally forwardly and sidewardly of the vehicle as the vehicle travels along a road, and wherein said control is operable to adjust said illumination source in response to a detection of an object of interest within said field of view of said second imaging device, said control adjusting said illumination source to direct illumination toward an area encompassing the detected object of interest when the object of interest is detected.

19. The automatic lighting system of claim 18, wherein said imaging device captures at least one image of the object of interest when the object of interest is illuminated by said illumination source, and wherein said control processes image data to determine or recognize characteristics of the detected object of interest.