Vehicle service system with variable-lens imaging sensors

• US 7,518,714 B2
• Filed: 04/07/2006
• Issued: 04/14/2009
• Est. Priority Date: 04/07/2005
• Status: Expired due to Fees

• Current Assignee: Hunter Engineering Company
• Original Assignee: Hunter Engineering Company
• Inventors: Voeller, David A., Strege, Timothy A.
• Primary Examiner(s): Tarcza; Thomas H
• Assistant Examiner(s): Brainard; Timothy A
• Application Number:
  US11/400,005
• Publication Number:
  US 20060227567A1
• Time in Patent Office: 1,103 Days
• Field of Search: 356/139.09, 356/155
• US Class Current: 356/155
• CPC Class Codes: G01B 11/2755 using photoelectric detection means
• CPC Class Codes: G01B 2210/143 One or more cameras on each side of a vehicle in the main embodiment
• CPC Class Codes: G02B 26/005 based on electrowetting

Abstract

A optical imaging sensor assembly for a machine-vision vehicle service system comprising a variable lens optical assembly. The variable lens optical assembly is controlled in response to direction from a vehicle service software application to alter an optical characteristic such as a field of view, a lens focal length, or an optical axis alignment to acquire images for use in a vehicle service procedure such as a vehicle wheel alignment procedure, vehicle tire balancing procedure, or tire changing procedure.

Claims

1. An improved vehicle service system having a processing system and at least one imaging sensor operatively coupled to the processing system for acquiring images associated with a vehicle component, the improvement comprising:

wherein the at least one imaging sensor includes at least one variable lens assembly having at least one selectively alterable optical characteristic;

wherein said at least one imaging sensor is configured to acquire, through said at least one variable lens assembly, a first image associated with a field of view during a vehicle service procedure;

wherein said at least one imaging sensor is configured to alter said optical characteristic of said at least one variable lens assembly during said vehicle service procedure; and

wherein said at least one imaging sensor is configured to acquire, through said at least one variable lens assembly having an altered optical characteristic, at least a second image, said second image associated with an altered field of view.

2. The improved vehicle service system of claim 1 wherein the vehicle service system is a vehicle wheel alignment system.

3. The improved vehicle service system of claim 1 wherein the vehicle service system is a vehicle wheel balancing system.

4. The improved vehicle service system of claim 1 wherein the vehicle service system is a tire changing system.

5. The improved vehicle service system of claim 1 wherein said variable lens assembly includes at least one fluid-lens component.

6. The improved vehicle service system of claim 5 wherein said at least one imaging sensor is configured to alter said field of view by altering a fluid-lens component.

7. The improved vehicle service system of claim 1 further including a control means operatively coupled to said at least one imaging sensor for directing said alteration of said at least one alterable optical characteristic of said at least one variable lens assembly.

8. The improved vehicle service system of claim 1 wherein said alterable optical characteristic is said field of view;

and

wherein said at least one imaging sensor is configured to alter said field of view by altering a configuration of said variable lens assembly.

9. The improved vehicle service system of claim 1 wherein said alterable optical characteristic is said field of view;

and

wherein said at least one imaging sensor is configured to selectively transition said field of view between a wide field of view and a narrow field of view during a vehicle service procedure.

10. The improved vehicle service system of claim 1 wherein said alterable optical characteristic is an image focus.

11. The improved vehicle service system of claim 1 wherein said alterable optical characteristic is a depth of field.

12. The improved vehicle service system of claim 1 wherein said alterable optical characteristic is a focal length.

13. The improved vehicle service system of claim 1 wherein said at least one variable lens assembly is a zoom lens.

14. An improved vehicle service system having a processing system and at least one imaging sensor operatively coupled to the processing system for acquiring images associated with a vehicle component, the improvement comprising:

wherein the at least one imaging sensor includes at least one variable lens assembly having at least one selectively alterable optical characteristic;

wherein said at least one imaging sensor is configured to acquire, through said at least one variable lens assembly, a first image associated with a field of view during a vehicle service procedure;

wherein said at least one imaging sensor is configured to alter said optical characteristic of said at least one variable lens assembly during said vehicle service procedure;

wherein said at least one imaging sensor is configured to acquire, through said at least one variable lens assembly having an altered optical characteristic, at least a second image, said second image associated with an altered field of view; and

wherein said alterable optical characteristic is an optical axis.

15. An imaging sensor for use with a vehicle service system, comprising:

a photoreceptor array responsive to incident radiation reflected from at least one vehicle component within a field of view to generate an image of said field of view;

at least one variable lens optical element disposed along an optical path between said photoreceptor array and said at least one vehicle component, said at least one variable lens optical element defining said field of view; and

a processor operatively coupled to said at least one variable lens optical element and to said photoreceptor array to selectively alter a characteristic of said at least one variable lens optical element between the generation of a first image and at least one subsequent image in response to directions from a vehicle service software application during a vehicle service procedure.

16. The imaging sensors of claim 15 wherein said at least one variable lens optical element is a fluid-lens optical element.

17. The imaging sensor of claim 15 wherein said processor is configured to alter said field of view of said at least one variable lens optical element.

18. The imaging sensor of claim 15 wherein said processor is configured to alter a depth of field of said at least one variable lens optical element.

19. The imaging sensor of claim 15 wherein said processor is configured to alter a focus of said at least one variable lens optical element.

20. The imaging sensor of claim 15 wherein said processor is configured to alter a focal length of said at least one variable lens optical element.

21. The imaging sensors of claim 15 wherein said at least one variable lens optical element is a zoom lens.

22. An imaging sensor for use with a vehicle service system, comprising:

a photoreceptor array responsive to incident radiation reflected from at least one vehicle component within a field of view to generate an image of said field of view;

at least one variable lens optical element disposed along an optical path between said photoreceptor array and said at least one vehicle component, said at least one variable lens optical element defining said field of view;

a processor operatively coupled to said at least one variable lens optical element and to said photoreceptor array to selectively alter a characteristic of said at least one variable lens optical element between the generation of a first image and at least one subsequent image in response to directions from a vehicle service software application during a vehicle service procedure; and

wherein said processor is configured to alter an optical axis of said at least one variable lens optical element.

23. An improved vehicle wheel alignment system having a processing system and at least two alignment sensors attached to the wheels of a vehicle, the alignment sensors being operatively coupled to the processing system for acquiring alignment angle data associated with a vehicle, the improvement comprising:

wherein each of the alignment sensors includes at least one imaging sensor configured with a first variable lens optical element for acquiring images, said first variable lens optical element configured to respond to the processing system to selectively alter an optical characteristic of said at least one imaging sensor between the acquisition of at least two images during a vehicle service procedure; and

wherein each of the alignment sensors further includes at least one optical emitter configured with a second variable lens optical element, said second variable lens optical element configured to respond to the processing system to alter a characteristic of optical energy emitted by said associated alignment sensor during a vehicle service procedure.

24. An improved vehicle service system having a processing system and at least one variable lens imaging sensor operatively coupled to the processing system for acquiring images associated with a vehicle component during a vehicle service procedure, the improvement comprising:

a control means configured to alter at least one variable characteristic of the variable lens imaging sensor during a vehicle service procedure between the acquisition of a first image and at least one subsequent image associated with the vehicle component present in a field of view of the variable lens imaging sensor.

25. The improved vehicle service system of claim 24 wherein said at least one variable characteristic is a mechanical configuration of the variable lens imaging sensor.

26. The improved vehicle service system of claim 24 wherein said control means is configured to alter an electrical signal supplied to said variable lens imaging sensor;

and wherein said variable characteristic of said variable lens imaging sensor is responsive to said supplied electrical signal.

27. The improved vehicle service system of claim 24 wherein said at least one variable characteristic is a zoom setting of the variable lens imaging sensor.