Imaging system for vehicle

• US 7,965,336 B2
• Filed: 11/14/2003
• Issued: 06/21/2011
• Est. Priority Date: 11/14/2002
• Status: Active Grant

• Current Assignee: Magna Electronics Incorporated (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: Whitehead, Peter J, Bingle, Robert L, Schofield, Kenneth, Camilleri, Joseph
• Primary Examiner(s): SENFI, BEHROOZ M
• Application Number:
  US10/534,632
• Publication Number:
  US 20060171704A1
• Time in Patent Office: 2,776 Days
• Field of Search: 348/118, 348/148, 348/162, 348/153, 348/159, 348/151, 348/161, 348/152, 348/156, 348/374, 348/373, 348/149, 362/494, 362/141, 362/144, 362/551, 362/135, 362/140
• US Class Current: 348/374
• CPC Class Codes: B60Q 1/1423 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 Class Codes: B60R 1/02 Rear-view mirror arrangements periscope arrangements B60R1/10
• CPC Class Codes: B60R 1/04 mounted inside vehicle B60R1/025, B60R1/08 take precedence
• CPC Class Codes: B60R 1/12 Mirror assemblies combined with other articles, e.g. clocks
• CPC Class Codes: B60R 11/04 Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60R 2001/1215 with information displays
• CPC Class Codes: B60R 2011/004 outside the vehicle
• CPC Class Codes: B60R 2011/008 Adjustable or movable supports
• CPC Class Codes: B60R 2011/0082 collapsible, e.g. for storing after use
• CPC Class Codes: B60R 2011/0084 with adjustment by linear movement in their operational position
• CPC Class Codes: B60R 2011/0094 characterised by means for covering after user, e.g. boxes, shutters or the like
• CPC Class Codes: B60R 2300/101 using cameras with adjustable capturing direction
• CPC Class Codes: B60R 2300/602 with an adjustable viewpoint
• CPC Class Codes: B60R 2300/8046 for replacing a rear-view mirror system
• CPC Class Codes: B60S 1/0411 the windscreens, windows or optical devices being movable with respect to fixed wipers
• CPC Class Codes: B60S 1/56 specially adapted for cleaning other parts or devices than front windows or windscreens rear-view mirror arrangements mounted on vehicle exterior including cleaning devices B60R1/0602
• CPC Class Codes: G03B 17/02 Bodies
• CPC Class Codes: G03B 29/00 Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects combinations with flash apparatus G03B15/03
• CPC Class Codes: G06V 20/56 exterior to a vehicle by using sensors mounted on the vehicle
• CPC Class Codes: H04N 23/11 : for generating image signals from visible and infrared light wavelengths
• CPC Class Codes: H04N 23/51 : Housings
• CPC Class Codes: H04N 23/52 : Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
• CPC Class Codes: H04N 23/54 : Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 : Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 : Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H04N 25/76 : Addressed sensors, e.g. MOS or CMOS sensors
• CPC Class Codes: H04N 7/183 : for receiving images from a single remote source

Abstract

An imaging system for a vehicle includes a camera module positionable at the vehicle and a control. The camera module includes a plastic housing that houses an image sensor, which is operable to capture images of a scene occurring exteriorly of the vehicle. The control is operable to process images captured by the image sensor. The portions of the housing may be laser welded or sonic welded together to substantially seal the image sensor and associated components within the plastic housing. The housing may include a ventilation portion that is at least partially permeable to water vapor to allow water vapor to pass therethrough while substantially precluding passage of water droplets and/or other contaminants. The housing may be movable at the vehicle between a stored position and an operational position, where the image sensor may be directed toward the exterior scene.

Claims

1. An imaging system for a vehicle, said imaging system comprising:

a camera module configured for mounting at a vehicle, said camera module comprising a plastic housing and an imaging sensor having a lens and a pixelated imaging array, said plastic housing including a connector portion and a camera portion, wherein said connector portion and said camera portion are laser welded together to form a substantially hermetic seal;

wherein said camera module comprises a self-contained camera module with said imaging sensor and associated components substantially sealed to limit or substantially preclude water intrusion into said plastic housing, and wherein said camera module is configured to be positioned at the vehicle as a unit;

wherein said connector portion of said camera module comprises an electrical connector suitable for electrically conductive connection to a vehicle electrical connector when said camera module is positioned at the vehicle;

wherein said imaging sensor is disposed at a first substrate and wherein said electrical connector is disposed at a second substrate, and wherein said electrical connector is electrically conductively connected to circuitry of said imaging sensor at said first substrate via a flexible connector;

wherein said first substrate is attached at said camera portion and said second substrate is attached at said connector portion such that said first and second substrates are disposed within said plastic housing with said imaging sensor having field of view through a portion of said camera portion;

wherein said electrical connector extends from said second substrate connector portion so as to be accessible at an end of said connector portion for connecting to the vehicle electrical connector when said camera module is positioned at the vehicle; and

a control operable to process video images captured by said imaging sensor.

2. The imaging system of claim 1, wherein said camera portion of said camera module includes a transparent cover portion at or near an end of said lens for receiving an image therethrough, and wherein said transparent cover is laser welded to said camera portion.

3. The imaging system of claim 1, wherein said camera module is positioned in a movable housing that is movable relative to an exterior portion of the vehicle to move said imaging sensor between a stored position generally within the portion of the vehicle and an operational position where said imaging sensor is positioned to have a field of view exteriorly of the vehicle.

4. The imaging system of claim 3, wherein said movable housing comprises a transparent panel, said transparent panel being positioned at least partially across an opening of said housing and generally in the field of view of said imaging sensor.

5. The imaging system of claim 4, wherein said movable housing comprises a panel cleaning device positionable at the exterior portion of the vehicle and configured to engage an exterior surface of said transparent panel to clean said transparent panel as said housing moves said imaging sensor between said stored position and said operational position.

6. The imaging system of claim 4, wherein said housing is configured to receive an illumination source, said illumination source being directable toward the exterior scene when said housing moves said imaging sensor to said operational position.

7. The imaging system of claim 1 including at least one illumination source, said control being operable to selectively activate said at least one illumination source in response to a detected ambient light level.

8. The imaging system of claim 1, wherein said control is operable to selectively switch said imaging sensor from a color mode to a black and white mode.

9. An imaging system of a vehicle, said imaging system comprising;

an imaging device operable to capture images of a scene occurring exteriorly of the vehicle;

a holding device for movably holding said imaging device, said holding device comprising a housing, a transparent panel and a panel cleaning device, said housing being movably mountable at an exterior portion of a vehicle, said imaging device being positioned within said housing, said transparent panel being positioned at least partially across an opening of said housing and generally in the field of view of said imaging device, said housing being movable relative to the exterior portion of the vehicle to move said imaging device between a stored position, where said imaging device is positioned generally within the portion of the vehicle, and an operational position, where said imaging device is positioned to have a field of view exteriorly of the vehicle, said panel cleaning device being positionable at the exterior portion of the vehicle and configured to engage an exterior surface of said transparent panel to clean said transparent panel as said housing moves said imaging device between said stored position and said operational position;

a control operable to process images captured by said imaging device; and

wherein said housing is movable to selectively position said imaging device in first and second operational positions, and wherein said control is operable to selectively move said housing to position said imaging device at said first operational position in response to the vehicle making an initial approach to a target zone and to position said imaging device at said second operational position in response to the vehicle moving further into the target zone, said imaging device being directed more downward when in said second operational position relative to said first operational position.

10. The imaging system of claim 9, wherein said housing moves said imaging device to said operational position in response to engagement of a reverse gear of the vehicle.

11. The imaging system of claim 9 including a spraying device operable to spray fluid onto said transparent panel.

12. The imaging system of claim 9 including an illumination source that is selectively operable to illuminate the exterior scene.

13. The imaging system of claim 12, wherein said housing is configured to receive said illumination source, said illumination source being directable toward the exterior scene when said housing moves said imaging device to said operational position.

14. The imaging system of claim 13, wherein said control is operable to selectively activate said illumination source and said imaging device when said imaging device is moved to said stored position to determine if moisture is present on said transparent panel.

15. The imaging system of claim 12, wherein said control is operable to selectively activate said illumination source in response to at least one of (a) said imaging device being in said operational position and (b) a detected ambient light level.

16. The imaging system of claim 9, wherein said control is operable to determine a distance to at least one object in response to processing of images captured by said imaging device when in said first and second operational positions.

17. An imaging system for a vehicle, said imaging system comprising:

a camera module positionable at the vehicle, said camera module comprising a plastic housing and an imaging sensor, said plastic housing including a first portion and a second portion, said first portion and said second portion being one of laser welded and sonic welded together to substantially seal said imaging sensor and associated components within said plastic housing, wherein said housing includes a ventilation portion, said ventilation portion being at least partially permeable to water vapor to allow water vapor to pass therethrough while substantially precluding passage of at least one of water droplets and contaminants; and

a control operable to process images captured by said imaging sensor.

18. An imaging system for a vehicle, said imaging system comprising:

a camera module configured for mounting at a vehicle as a unit;

wherein said camera module comprises a plastic housing;

wherein said plastic housing comprises a first molded plastic housing portion and a second molded plastic housing portion, and wherein said first and second housing portions comprise respective first and second mating portions;

wherein said mating portions of said first and second housing portions are laser welded together forming a hermetic seal therebetween in order to substantially preclude water intrusion into said plastic housing therethrough; and

wherein said plastic housing accommodates a pixelated imaging array therein.

19. The imaging system of claim 18, wherein said plastic housing accommodates a lens system.

20. The imaging system of claim 19, wherein said first housing portion comprises a generally cylindrical portion that at least partially accommodates said lens system.

21. The imaging system of claim 20, wherein said first housing portion at least partially encases said pixelated imaging array.

22. The imaging system of claim 20, wherein said first housing portion of said camera module includes a transparent cover portion at or near an end of said generally cylindrical portion, and wherein said transparent cover is laser welded to said first housing portion.

23. The imaging system of claim 22, further comprising a heating element at said transparent cover for heating said transparent cover.

24. The imaging system of claim 20, wherein said second housing portion of said camera module comprises an electrical connector that is accessible at an exterior portion of said second housing portion and that is suitable for electrically conductive connection to a vehicle electrical connector when said camera module is positioned at the vehicle.

25. The imaging system of claim 18, further comprising heating means.

26. The imaging system of claim 25, wherein said heating means comprises lens heating means.

27. The imaging system of claim 18, further comprising at least one illumination source, said control being operable to selectively activate said at least one illumination source in response to a detected ambient light level.

28. The imaging system of claim 18, further comprising a control operable to process video images captured by said pixelated imaging array.

29. An imaging system for a vehicle, said imaging system comprising:

a camera module configured for mounting at a vehicle as a unit;

wherein said camera module comprises a plastic housing;

wherein said plastic housing comprises a first molded plastic housing portion and a second molded plastic housing portion, and wherein said first and second housing portions comprise respective first and second mating portions;

wherein said mating portions of said first and second housing portions are laser welded together forming a hermetic seal therebetween in order to substantially preclude water intrusion into said plastic housing therethrough;

wherein said plastic housing accommodates a pixelated imaging array therein;

wherein said first housing portion comprises a generally cylindrical portion that at least partially accommodates a lens system; and

wherein said second housing portion comprises an electrical connector suitable for electrically conductive connection to a vehicle electrical connector when said camera module is positioned at the vehicle.

30. The imaging system of claim 29, wherein said first housing portion at least partially encases said pixelated imaging array.

31. The imaging system of claim 29, further comprising heating means.

32. The imaging system of claim 31, wherein said heating means comprises lens heating means.