Device for imaging the inner surface of a cavity in a workpiece

• US 9,395,310 B2
• Filed: 11/05/2012
• Issued: 07/19/2016
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Hommel-Etamic GmbH (Jenoptik AG)
• Original Assignee: Hommel-Etamic GmbH (Jenoptik AG)
• Inventors: Rudolf, Michael
• Primary Examiner(s): Bryant, Casey
• Application Number:
  US13/668,520
• Publication Number:
  US 20130112881A1
• Time in Patent Office: 1,352 Days
• Field of Search: 250/361, 356/237.2, 3562411- 6, 3562371- 5
• US Class Current: 1/1
• CPC Class Codes: F16B 12/12 for non-metal furniture parts, e.g. made of wood, of plastics
• CPC Class Codes: F16B 12/125 using mortise and tenon joints
• CPC Class Codes: F16B 12/46 Non-metal corner connections
• CPC Class Codes: F16B 13/00 Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose nails F16B15/00; self-locking pins or bolts in general, stud-and-socket releasable fastenings F16B21/00; dowels or bolts for railroad sleepers E01B9/00; ans means for anchoring structural elements or bulkheads specially adapted to foundation engineering E02D5/74; bolts or dowels used while laying bricks or casting concrete sleepers E04B1/38; setting anchoring bolts in shafts, tunnels or galleries E21D20/00; anchoring bolts for shafts, tunnels or galleries E21D21/00
• CPC Class Codes: F16B 17/00 Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformationriveting F16B19/04
• CPC Class Codes: F16B 2012/466 using mortise and tenon joints
• CPC Class Codes: F16B 21/09 Releasable fastening devices with a stud engaging a keyhole slot
• CPC Class Codes: G01N 21/954 Inspecting the inner surface of hollow bodies, e.g. bores
• CPC Class Codes: G02B 13/06 Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
• CPC Class Codes: G02B 23/24 Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
• CPC Class Codes: G02B 23/2423 of the distal end
• CPC Class Codes: G02B 23/243 Objectives for endoscopes
• CPC Class Codes: G02B 23/2461 Illumination

Abstract

A device for imaging an inner surface of a cavity in a workpiece includes optics with a panoramic view, and has an image transmission connection with an image sensor and a downstream evaluation device. The device also has an illumination system with a light source for illuminating an imaging region of the inner surface imaged by the optics. Further, at least one light-emitting and/or light-deflecting component of the illumination system is provided on a lens, such as in particular a front lens, of the optics.

Claims

1. Device for imaging an inner surface of a cavity in a workpiece, comprising:

a) an optics, and an image sensor having a downstream evaluation device;

b) the optics having an image transmission connection with the image sensor, and the image sensor having an image transmission connection with the downstream evaluation device;

c) an illumination system, the illumination system including a light source for illuminating an imaging region of the inner surface which is imaged by the optics;

d) the illumination system including one of a light-emitting and a light-deflecting component; and

e) the optics including a front lens, the front lens having a distal end, and the one of the light-emitting and light-deflecting component of the illumination system being substantially directly affixed to the distal end of the front lens.

2. Device according to claim 1, wherein:

a) the one of the light-emitting and light-deflecting component is provided outside a field of view of the optics which is used for imaging the inner surface.

3. Device according to claim 1, wherein:

a) the one of the light-emitting and light-deflecting component is provided in the region of or at a vertex on the lens of the optics.

4. Device according to claim 1, wherein:

a) the one of the light-emitting and light-deflecting component is provided on or in the region of an optical axis of the optics.

5. Device according to claim 1, wherein:

a) the light-deflecting component includes at least one mirror.

6. Device according to claim 1, wherein:

a) the light-emitting component includes a light source element with which a power supply device is associated.

7. Device according to claim 6, wherein:

a) the power supply device is configured in such a way that power is transmitted or is transmittable to the light source element in a wireless manner.

8. Device according to claim 7, wherein:

a) the power supply device includes at least one induction coil system.

9. Device according to claim 8, wherein:

a) at least one coil of the induction coil system is provided outside a field of view of the optics that is used for imaging the inner surface.

10. Device according to claim 9, wherein:

a) the at least one coil is a receiver coil.

11. Device according to claim 6, wherein:

a) the light source element is connected to the power supply device via at least one supply line.

12. Device according to claim 11, wherein:

a) an electrode for electrically connecting the at least one supply line to the light source element is provided and is made of an optically transparent material.

13. Device according to claim 12, wherein:

a) the electrode includes at least one electrode which forms a coating of the lens of the optics.

14. Device according to claim 1, wherein:

a) the light-emitting component includes at least one luminescent element which generates light when excited by electromagnetic radiation.

15. Device according to claim 1, wherein:

a) the illumination system is provided relative to the optics in such a way, and a beam path of the illumination system is selected in such a way, that a first axial section of the imaging region is illuminated or is illuminable in bright field illumination, and at the same time, a second axial section of the imaging region provided at a distance from the first axial section is illuminated or is illuminable in dark field illumination.

16. Device according to claim 1, wherein:

a) the optics has a panoramic view.

17. Device according to claim 1, wherein:

a) the one of the light-emitting and light-deflecting component affixed at the distal end of the front lens is the light-emitting component.

18. Device according to claim 17, wherein:

a) the light-emitting component includes a light source element with which a power supply device is associated.

19. Device according to claim 1, wherein:

a) the one of the light-emitting and light-deflecting component affixed at the distal end of the front lens is the light-deflecting component.

20. Device according to claim 1, wherein:

a) the light-deflecting includes at least one mirror.

21. Device according to claim 1, wherein:

a) the one of the light-emitting and light-deflecting component substantially directly affixed at the distal end of the front lens is the light-emitting component; and

b) the light-emitting component is directly affixed at the distal end of the front lens.

22. Device according to claim 1, wherein:

a) the one of the light-emitting and light-defecting component substantially directly affixed at the distal end of the front lens is the light-deflecting component; and

b) the light-deflecting component is directly affixed at the distal end of the front lens.

23. Device according to claim 1, wherein:

a) the image transmission connection of the optics with the image sensor is an optical connection.