AUTOMATIC LIGHTING SYSTEM WITH ADAPTIVE FUNCTION

• US 20110176003A1
• Filed: 03/29/2011
• Published: 07/21/2011
• 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: Higgins-Luthman, Michael J., Ince, William C., Lu, Yuesheng
• Granted Patent: US 8,070,332 B2
• Time in Patent Office: Days
• US Class Current: 348/148
• 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 Searchlights, e.g. 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 an imaging device, an illumination source and a control. The illumination source is directed generally forwardly with respect to a direction of forward travel of the vehicle. The imaging device captures image data and the control processes the captured image data to detect an object of interest generally forwardly and sidewardly of the vehicle. The control is operable to adjust the illumination source in response to detection of an object of interest. The imaging device may be synchronized with flashing of at least one lighting element of the illumination source to capture image data during a time period that the lighting element is being flashed. The control may adjust the illumination source to direct illumination toward an area encompassing a detected object of interest when the object of interest is detected.

Claims

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

an imaging device for capturing image data, said imaging device having a field of view directed generally forwardly with respect to a forward direction of travel of the vehicle as the vehicle travels forwardly along a road;

a control operable to process said image data captured by said imaging device in order to detect an object at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road and to determine if a detected object is an object of interest present at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road;

wherein said control is operable to determine if a detected object is an object of interest at least in part by determining at least one of (a) a size of the detected object, (b) a shape of the detected object, (c) a distance to the detected object, and (d) a direction toward the detected object;

an illumination source operable to illuminate at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road, said illumination source comprising at least one lighting element;

wherein said control is operable to flash at least one lighting element of said illumination source in response to a determination that a detected object is an object of interest; and

wherein said imaging device is synchronized with flashing of said at least one lighting element of said illumination source to capture image data during a time period that said at least one lighting element of said illumination source is being flashed.

2. The automatic lighting system of claim 1, wherein said control processes said image data to determine a characteristic of a detected object of interest.

3. The automatic lighting system of claim 2, wherein a detected object of interest comprises a sign and wherein said control processes said image data to determine or recognize characters on the detected sign.

4. The automatic lighting system of claim 1, wherein said control is operable to adjust illumination emanating from said illumination source in response to a detection of an object of interest, and wherein said control is operable to direct illumination toward an area encompassing a detected object of interest.

5. The automatic lighting system of claim 4, wherein said control is operable to adjust illumination emanating from said illumination source in at least one of a horizontal direction and a vertical direction.

6. The automatic lighting system of claim 1, wherein said control is operable to adjust said illumination source to direct illumination toward an area encompassing a detected object of interest when the object of interest is detected.

7. The automatic lighting system of claim 6, wherein said illumination source is adjustable via pivoting said illumination source about a pivot axis.

8. The automatic lighting system of claim 6, wherein said at least one lighting element comprises a plurality of lighting elements.

9. The automatic lighting system of claim 8, wherein said illumination source is adjustable via selectively activating at least some individual lighting elements of said plurality of lighting elements.

10. The automatic lighting system of claim 9, wherein said plurality of lighting elements of said illumination source comprises a plurality of light emitting diodes, and wherein illumination emanating from said illumination source is adjustable via selectively activating at least some individual light emitting diodes of said plurality of light emitting diodes.

11. The automatic lighting system of claim 9, wherein said plurality of lighting elements of said illumination source comprises an array of light emitting diodes, and wherein illumination emanating from said illumination source is adjustable via selectively activating at least some individual light emitting diodes of said array of light emitting diodes.

12. The automatic lighting system of claim 11, wherein activation of some individual light emitting diodes results in a beam of light generally in one direction while activation of some other individual light emitting diodes results in a beam of light generally in another direction.

13. The automatic lighting system of claim 6, wherein said illumination source is adjustable via adjusting at least one of (a) a baffle that is disposed in front of at least one lighting element of said illumination source and (b) a light guiding element that is disposed in front of at least one lighting element of said illumination source.

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

15. The automatic lighting system of claim 1, wherein said illumination source comprises a headlamp of the vehicle.

16. The automatic lighting system of claim 15, wherein said headlamp comprises a plurality of light emitting diodes.

17. The automatic lighting system of claim 1, 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.

18. The automatic lighting system of claim 1, wherein, responsive to detection of an object of interest, said control is operable to generate an output to alert the driver of the vehicle.

19. The automatic lighting system of claim 18, wherein said alert comprises at least one of (a) a visual display, (b) a warning light, (c) an audible signal, and (d) a haptic alert.

20. The automatic lighting system of claim 1, wherein said at least one lighting element of said illumination source is one of (a) automatically actuated to at least briefly illuminate a detected object of interest and (b) automatically adjusted to at least briefly illuminate a detected object of interest.

21. The automatic lighting system of claim 1, wherein said at least one lighting element of said illumination source comprises an infrared or near infrared radiating lighting element and wherein said imaging device is sensitive to infrared or near infrared radiation.

22. The automatic lighting system of claim 1, wherein said control is operable to determine that a detected object is a living object.

23. The automatic lighting system of claim 22, wherein said control is operable to determine that a detected object is a deer.

24. The automatic lighting system of claim 22, wherein said control is operable to determine that a detected object is a pedestrian.

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

26. The automatic lighting system of claim 25, wherein said control is operable to adjust illumination emanating from said illumination source in response to an output of said gaze detection device, wherein said control is operable to direct illumination toward an area generally forwardly and sidewardly of the vehicle where the driver or driving instructor of the vehicle is looking.

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

an imaging device for capturing image data, said imaging device having a field of view directed generally forwardly with respect to a forward direction of travel of the vehicle as the vehicle travels forwardly along a road;

a control operable to process said image data captured by said imaging device in order to detect an object at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road and to determine if a detected object is an object of interest present at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road;

wherein said control is operable to determine if a detected object is an object of interest at least in part by determining at least one of (a) a size of the detected object, (b) a shape of the detected object, (c) a distance to the detected object, and (d) a direction toward the detected object;

an illumination source operable to illuminate at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road, wherein said illumination source comprises at least one lighting element; and

wherein said control is operable to adjust said illumination source to direct illumination toward an area encompassing a detected object of interest when the object of interest is detected.

28. The automatic lighting system of claim 27, wherein said illumination source is adjustable via pivoting said illumination source about a pivot axis.

29. The automatic lighting system of claim 27, wherein said at least one lighting element comprises a plurality of lighting elements.

30. The automatic lighting system of claim 29, wherein said illumination source is adjustable via selectively activating at least some individual lighting elements of said plurality of lighting elements.

31. The automatic lighting system of claim 30, wherein said plurality of lighting elements of said illumination source comprises a plurality of light emitting diodes, and wherein illumination emanating from said illumination source is adjustable via selectively activating at least some individual light emitting diodes of said plurality of light emitting diodes.

32. The automatic lighting system of claim 30, wherein said plurality of lighting elements of said illumination source comprises an array of light emitting diodes, and wherein illumination emanating from said illumination source is adjustable via selectively activating at least some individual light emitting diodes of said array of light emitting diodes.

33. The automatic lighting system of claim 32, wherein activation of some individual light emitting diodes results in a beam of light generally in one direction while activation of other individual light emitting diodes results in a beam of light generally in another direction.

34. The automatic lighting system of claim 27, wherein said illumination source is adjustable via adjusting at least one of (a) a baffle that is disposed in front of at least one lighting element of said illumination source and (b) a light guiding element that is disposed in front of at least one lighting element of said illumination source.

35. The automatic lighting system of claim 27, wherein the detected object of interest comprises a sign and wherein said control processes said image data to determine or recognize characters on the detected sign.

36. The automatic lighting system of claim 27, wherein said control is operable to adjust illumination emanating from said illumination source in at least one of a horizontal direction and a vertical direction.

37. The automatic lighting system of claim 27, wherein said control is operable to flash at least one lighting element of said illumination source in response to a determination that a detected object is an object of interest, and wherein said imaging device is synchronized with flashing of said at least one lighting element of said illumination source to capture image data during a time period that said at least one lighting element of said illumination source is being flashed.

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

an imaging device for capturing image data, said imaging device having a field of view directed generally forwardly with respect to a forward direction of travel of the vehicle as the vehicle travels forwardly along a road;

a control operable to process said image data captured by said imaging device in order to detect an object at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road and to determine if a detected object is an object of interest present at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road;

wherein said control is operable to determine if a detected object is an object of interest at least in part by determining at least one of (a) a size of the detected object, (b) a shape of the detected object, (c) a distance to the detected object, and (d) a direction toward the detected object;

wherein said control is operable to determine if a detected object is a pedestrian;

an illumination source operable to illuminate at least one of generally forwardly of the vehicle and generally sidewardly of the vehicle as the vehicle travels along the road, wherein said illumination source comprises an array of light emitting diodes and wherein illumination emanating from said illumination source is adjustable via selectively activating at least some individual light emitting diodes of said array of light emitting diodes; and

wherein said control is operable to direct illumination toward an area encompassing a detected object of interest.

39. The automatic lighting system of claim 38, wherein said light emitting diodes of said illumination source comprise infrared or near infrared radiating light emitting diodes and wherein said imaging device is sensitive to infrared or near infrared radiation.

40. The automatic lighting system of claim 38, wherein at least some of said light emitting diodes of said illumination source are one of (a) automatically actuated to at least briefly illuminate of a detected object of interest and (b) automatically adjusted to at least briefly illuminate a detected object of interest.

41. The automatic lighting system of claim 38, wherein activation of some individual light emitting diodes results in a beam of light generally in one direction while activation of other individual light emitting diodes results in a beam of light generally in another direction.