Occupant-Sensing Imaging System

• US 20080074894A1
• Filed: 10/06/2005
• Published: 03/27/2008
• Est. Priority Date: 10/22/2004
• Status: Abandoned Application

• Current Assignee: IEE International Electronics & Engineering SA (Aerospace Hi-Tech Holding Group Company Limited)
• Original Assignee: IEE International Electronics & Engineering SA (Aerospace Hi-Tech Holding Group Company Limited)
• Inventors: Cauquy, Marie-Astrid, Kiefer, Walter, Decoster, Yves, Kaiser, Jean-Luc
• Application Number:
  US11/577,524
• Publication Number:
  US 20080074894A1
• Time in Patent Office: Days
• US Class Current: 362/488
• CPC Class Codes: B60R 21/01538 for image processing, e.g. cameras or sensor arrays
• CPC Class Codes: G06V 10/145 Illumination specially adapted for pattern recognition, e.g. using gratings
• CPC Class Codes: G06V 40/10 Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands

Abstract

A sensing system for an automotive vehicle comprises at least one imager element and at least one illuminating device to be arranged within an autom-otive vehicle for sensing the presence of an object in a sensing area associated to said vehicle. According to the invention the illuminating device comprises at least one light source for generating a light beam and light beam shaping means for generating an inhomogeneous light distribution in said sensing area, said inhomogeneous light distribution presenting at least one intensity maximum in a specific region of said sensing area.

Claims

1-14. -14. (canceled)

15. Sensing system for an automotive vehicle, comprising at least one 3D camera and at least one illuminating device to be arranged within an automotive vehicle for sensing the presence of an object in a sensing area associated to said vehicle, said illuminating device comprising at least one light source for generating a light beam and light beam shaping means for generating an inhomogeneous light distribution in said sensing area, said inhomogeneous light distribution presenting at least one intensity maximum in a specific region of said sensing area.

16. Sensing system according to claim 15, wherein said beam shaping means comprises a diffractive optical element arranged in front of said at least one light source, said diffractive optical element being configured for splitting light from said at least one light source into different partial beams with predefined intensity ratios and propagating into predefined directions.

17. Sensing system according to claim 16, wherein said beam shaping means further comprises a refractive optical element arranged between said at least one light source and said diffractive optical element.

18. Sensing system according to claim 15, wherein said illuminating device comprises a plurality of individual light sources arranged in an array configuration.

19. Sensing system according to claim 18, wherein said beam shaping means comprises a plurality of individual optical elements, each individual optical element being associated to one individual light source.

20. Sensing system according to claim 19, wherein said individual optical elements are refractive optical elements arranged in front of the associated light source in such a way, that an optical axis of each refractive optical element is offset with respect to an optical axis of said associated light source.

21. Sensing system according to claim 15, wherein said specific region is located in a furthest part of the sensing area with respect to the 3D camera and/or the illuminating device.

22. Sensing system according to claim 15, wherein said specific region is located in the vicinity of a vehicle dashboard.

23. Sensing system according to claim 15, wherein said specific region is located in the vicinity of a headrest position of the vehicle seat.

24. Sensing system according to claim 15, wherein said 3D camera and said illuminating device are configured to be arranged adjacent to each other in the vehicle.

25. Sensing system according to claim 15, wherein said 3D camera and said illuminating device are configured to be arranged in distant locations in the vehicle.

26. Sensing system according to claim 15, wherein said illuminating device comprises means for adjusting the illumination intensity of said at least one light source.

27. Occupant-sensing system for an automotive vehicle comprising a sensing system including at least one 3D camera and at least one illuminating device to be arranged within an automotive vehicle for sensing the presence of an object in a sensing area associated to said vehicle, said illuminating device comprising at least one light source for generating a light beam and light beam shaping means for generating an inhomogeneous light distribution in said sensing area, said inhomogeneous light distribution presenting at least one intensity maximum in a specific region of said sensing area, wherein said 3D camera and said illuminating device are arranged within a passenger compartment so that the sensing area covers a part of the vehicle interior compartment.

28. Occupant-sensing system according to claim 27, wherein said beam shaping means comprises a diffractive optical element arranged in front of said at least one light source, said diffractive optical element being configured for splitting light from said at least one light source into different partial beams with predefined intensity ratios and propagating into predefined directions.

29. Occupant-sensing system according to claim 28, wherein said beam shaping means further comprises a refractive optical element arranged between said at least one light source and said diffractive optical element.

30. Occupant-sensing system according to claim 27, wherein said illuminating device comprises a plurality of individual light sources arranged in an array configuration and wherein said beam shaping means comprises a plurality of individual optical elements, each individual optical element being associated to one individual light source.

31. Occupant-sensing system according to claim 30, wherein said individual optical elements are refractive optical elements arranged in front of the associated light source in such a way, that an optical axis of each refractive optical element is offset with respect to an optical axis of said associated light source.

32. Obstacle-sensing system for an automotive vehicle comprising a sensing system including at least one 3D camera and at least one illuminating device to be arranged within an automotive vehicle for sensing the presence of an object in a sensing area associated to said vehicle, said illuminating device comprising at least one light source for generating a light beam and light beam shaping means for generating an inhomogeneous light distribution in said sensing area, said inhomogeneous light distribution presenting at least one intensity maximum in a specific region of said sensing area, wherein said 3D camera and said illuminating device are arranged in said vehicle so that the sensing area covers a part of the surroundings of the vehicle.

33. Obstacle-sensing system according to claim 32, wherein said beam shaping means comprises a diffractive optical element arranged in front of said at least one light source, said diffractive optical element being configured for splitting light from said at least one light source into different partial beams with predefined intensity ratios and propagating into predefined directions.

34. Obstacle-sensing system according to claim 33, wherein said beam shaping means farther comprises a refractive optical element arranged between said at least one light source and said diffractive optical element.

35. Obstacle-sensing system according to claim 32, wherein said illuminating device comprises a plurality of individual light sources arranged in an array configuration and wherein said beam shaping means comprises a plurality of individual optical elements, each individual optical element being associated to one individual light source.

36. Obstacle-sensing system according to claim 35, wherein said individual optical elements are refractive optical elements arranged in front of the associated light source in such a way, that an optical axis of each refractive optical element is offset with respect to an optical axis of said associated light source.