Optical scanning and measurement

• US 9,188,775 B2
• Filed: 12/02/2013
• Issued: 11/17/2015
• Est. Priority Date: 08/28/2013
• Status: Active Grant

• Current Assignee: Ethos-United-I LLC
• Original Assignee: United Sciences LLC
• Inventors: Blanton, Keith A., Hatzilias, Karol, Posey, Stefan T., Sharpe, Wess Eric
• Primary Examiner(s): STAFIRA, MICHAEL PATRICK
• Application Number:
  US14/094,130
• Publication Number:
  US 20150062585A1
• Time in Patent Office: 715 Days
• US Class Current: 1/1
• CPC Class Codes: G01B 11/12 internal diameters
• CPC Class Codes: G01B 11/24 for measuring contours or curvatures
• CPC Class Codes: G01B 11/2408 for measuring roundness
• CPC Class Codes: G01B 11/2518 Projection by scanning of the object
• CPC Class Codes: G01N 2021/0181 Memory or computer-assisted visual determination
• CPC Class Codes: G01N 21/01 Arrangements or apparatus for facilitating the optical investigation
• CPC Class Codes: G01N 21/55 Specular reflectivity
• CPC Class Codes: G01Q 10/00 Scanning or positioning arrangements, i.e. arrangements for actively controlling the movement or position of the probe
• CPC Class Codes: G02B 26/0875 by means of one or more refracting elements
• CPC Class Codes: G07C 3/143 Finished product quality control

Abstract

Apparatus and methods for optical scanning, including an optical probe capable of motion for optical scanning with respect to both the interior and the exterior of a scanned object, the optical probe also including light conducting apparatus disposed so as to conduct scan illumination from a source of scan illumination through the probe; light reflecting apparatus disposed so as to project scan illumination radially away from a longitudinal axis of the probe with at least some of the scan illumination projected onto the scanned object; optical line forming apparatus disposed so as to project scan illumination as a line of scan illumination with at least some of the scan illumination projected onto the scanned object; and a lens disposed so as to conduct, through the probe to an optical sensor, scan illumination reflected from the scanned object.

Claims

1. Apparatus for optical scanning, the apparatus comprising an optical probe capable of motion for optical scanning with respect to both the interior and the exterior of a scanned object, the optical probe comprising:

light conducting apparatus disposed so as to conduct scan illumination from a source of scan illumination through the probe;

optical line forming apparatus disposed so as to project scan illumination as a line of scan illumination with at least some of the scan illumination projected onto the scanned object; and

light reflecting apparatus disposed so as to project the scan illumination radially away from a longitudinal axis of the probe with at least some of the scan illumination projected onto the scanned object;

a lens disposed so as to conduct, through the probe to an optical sensor, scan illumination reflected from the scanned object;

the apparatus further comprising an optical scanner body having the probe mounted upon the optical scanner body with the optical scanner body configured for mounting upon an end effector of a robotic transport so that the probe is capable of movement by the robotic transport for optical scanning with respect to the scanned object, including both movement within the scanned object and movement with respect to the exterior of the scanned object.

2. The apparatus of claim 1 wherein optical line forming apparatus further comprises the optical line forming apparatus disposed so as to project scan illumination as a fan of scan illumination.

3. The apparatus of claim 1 wherein optical line forming apparatus further comprises the optical line forming apparatus disposed so as to project scan illumination as a fan of scan illumination disposed at a predetermined angle with respect to a longitudinal axis of the probe.

4. The apparatus of claim 1 wherein the optical line forming apparatus further comprises a Powell lens.

5. The apparatus of claim 1 wherein the optical line forming apparatus further comprises a collimating optical element integrated with a Powell lens.

6. The apparatus of claim 1 wherein the optical line forming apparatus further comprises a diffractive optic lens.

7. The apparatus of claim 1 wherein the optical line forming apparatus further comprises a refractive optic lens.

8. The apparatus of claim 1 further comprising

the optical sensor disposed with respect to the lens so as to receive through the lens the scan illumination reflected from the scanned object;

and

a controller operatively coupled to the optical sensor, the controller configured to determine from the received scan illumination measurements of the scanned object.

9. The apparatus of claim 1 further comprising an optical scanner body with the probe mounted upon the optical scanner body, the optical scanner body comprising:

the source of scan illumination conductively coupled to the light conducting apparatus; and

the optical sensor disposed within the optical scanner body so as to capture, from the scan illumination reflected through the lens from the scanned object, an image of at least a portion of the scanned object.

10. Apparatus for optical scanning, the apparatus comprising an optical probe capable of motion for optical scanning with respect to both the interior and the exterior of a scanned object, the optical probe comprising:

light conducting apparatus disposed so as to conduct scan illumination from a source of scan illumination through the probe;

light reflecting apparatus disposed so as to project the scan illumination radially away from a longitudinal axis of the probe with at least some of the scan illumination projected onto the scanned object; and

a lens disposed so as to conduct, through the probe to an optical sensor, scan illumination reflected from the scanned object.

11. The apparatus of claim 10 further comprising

the optical sensor disposed with respect to the lens so as to receive through the lens the scan illumination reflected from the scanned object;

and

a controller operatively coupled to the optical sensor, the controller configured to determine from the received scan illumination measurements of the scanned object.

12. The apparatus of claim 10 further comprising an optical scanner body with the probe mounted upon the optical scanner body, the optical scanner body comprising:

the source of scan illumination conductively coupled to the light conducting apparatus; and

the optical sensor disposed within the optical scanner body so as to capture, from the scan illumination reflected through the lens from the scanned object, an image of at least a portion of the scanned object.

13. The apparatus of claim 10 further comprising an optical scanner body having the probe mounted upon the optical scanner body with the optical scanner body configured for mounting upon an end effector of a robotic transport so that the probe is capable of movement by the robotic transport for optical scanning with respect to the scanned object, including both movement within the scanned object and movement with respect to the exterior of the scanned object.

14. The apparatus of claim 10 further comprising an optical scanner body having the probe mounted upon the optical scanner body with the optical scanner body configured to be hand held so that the probe is capable of movement by hand for optical scanning with respect to the scanned object, including both movement within the scanned object and movement with respect to the exterior of the scanned object.

15. Apparatus for optical scanning, the apparatus comprising an optical probe capable of motion for optical scanning with respect to both the interior and the exterior of a scanned object, the optical probe comprising:

light conducting apparatus disposed so as to conduct scan illumination from a source of scan illumination through the probe;

light reflecting apparatus disposed so as to project scan illumination radially away from a longitudinal axis of the probe with at least some of the scan illumination projected onto the scanned object;

optical line forming apparatus disposed so as to project scan illumination as a line of scan illumination with at least some of the scan illumination projected onto the scanned object; and

a lens disposed so as to conduct, through the probe to an optical sensor, scan illumination reflected from the scanned object.

16. The apparatus of claim 15 wherein optical line forming apparatus further comprises the optical line forming apparatus disposed so as to project scan illumination as a fan of scan illumination.

17. The apparatus of claim 15 wherein optical line forming apparatus further comprises the optical line forming apparatus disposed so as to project scan illumination as a fan of scan illumination disposed at a predetermined angle with respect to a longitudinal axis of the probe.

18. The apparatus of claim 15 wherein the optical line forming apparatus further comprises a Powell lens.

19. The apparatus of claim 15 wherein the optical line forming apparatus further comprises a collimating optical element integrated with a Powell lens.

20. The apparatus of claim 15 wherein the optical line forming apparatus further comprises a diffractive optic lens.

21. The apparatus of claim 15 wherein the optical line forming apparatus further comprises a refractive optic lens.

22. The apparatus of claim 15 further comprising

the optical sensor disposed with respect to the lens so as to receive through the lens the scan illumination reflected from the scanned object;

and

a controller operatively coupled to the optical sensor, the controller configured to determine from the received scan illumination measurements of the scanned object.

23. The apparatus of claim 15 further comprising an optical scanner body with the probe mounted upon the optical scanner body, the optical scanner body comprising:

the source of scan illumination conductively coupled to the light conducting apparatus; and

the optical sensor disposed within the optical scanner body so as to capture, from the scan illumination reflected through the lens from the scanned object, an image of at least a portion of the scanned object.

24. The apparatus of claim 15 further comprising an optical scanner body having the probe mounted upon the optical scanner body with the optical scanner body configured for mounting upon an end effector of a robotic transport so that the probe is capable of movement by the robotic transport for optical scanning with respect to the scanned object, including both movement within the scanned object and movement with respect to the exterior of the scanned object.

25. The apparatus of claim 15 further comprising an optical scanner body having the probe mounted upon the optical scanner body with the optical scanner body configured to be hand held so that the probe is capable of movement by hand for optical scanning with respect to the scanned object, including both movement within the scanned object and movement with respect to the exterior of the scanned object.