Multi-channel optical fiber rotary junction

Patent metadata

Field	Value
Publication number	US-10996402-B2
Application number	US-201716085672-A
Country	US
Kind code	B2
Filing date	Mar 22, 2017
Priority date	Mar 24, 2016
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

Exemplary apparatus, systems, methods of making, and methods of using a rotary junction are provided. A rotary junction having multiple channels is provided herein. The rotary junction has a first coupling optic and a second coupling optic where the rotating optical fiber or other waveguide comping from the first coupling optic passes through the second coupling optics.

First claim

What is claimed is:

1. A rotary junction comprising:
a first coupling optic that comprises
a first rotor having a stationary side and a rotating side,
a first waveguide on a stationary side of the first rotor and,
a second waveguide on the rotating side of the first rotor;

a second coupling optic that comprises
a second rotor having a stationary side and a rotating side,
a third waveguide on a rotating side of the second rotor and,
a fourth waveguide on the stationary side of the second rotor;

wherein the second waveguide passes through the second coupling optics, wherein the first waveguide is configured to be coupled to one or more light sources.

2. The rotary junction of claim 1 , wherein the rotation of the second waveguide is not altered or affected by the second coupling optic.

3. The rotary junction of claim 1 , wherein the rotation of the first coupling optic and the rotation of the second coupling optic are synchronized.

4. The rotary junction of claim 1 , wherein the first, second, third, and fourth waveguides are each optical fibers.

5. The rotary junction of claim 4 , wherein the first waveguide and the second waveguide are single mode fibers.

6. The rotary junction of claim 4 , wherein the third waveguide and the fourth waveguide are single mode fibers.

7. The rotary junction of claim 4 , wherein the third waveguide and the fourth waveguide are multimode fibers.

8. The rotary junction of claim 4 , wherein the optical crosstalk between the second waveguide and the third waveguide is less than −60 dB.

9. The rotary junction of claim 8 , wherein the optical crosstalk between the second waveguide and the third waveguide is not significant within the range of 400 nm to 900 nm.

10. The rotary junction of claim 1 , wherein the first coupling optic and the second coupling optic both comprise a collimator.

11. The rotary junction of claim 10 , wherein the collimator for the first coupling optic is a GRIN lens and the collimator for the second coupling optic is a GRIN lens.

12. An imaging apparatus comprising: a rotary junction member comprising
a first coupling optic that comprises
a first rotor having a stationary side and a rotating side,
a first waveguide on a stationary side of the first rotor and,
a second waveguide on the rotating side of the first rotor; and

a second coupling optic that comprises
a second rotor having a stationary side and a rotating side,
a third waveguide on a rotating side of the second rotor and,
a fourth waveguide on the stationary side of the second rotor;

wherein the second waveguide passes through the second coupling optics, and an optical probe detachably attached to the rotary junction member wherein the first waveguide is configured to be coupled to one or more light sources.

13. The imaging apparatus of claim 12 , wherein the optical probe is adapted and configured for in vivo use.

14. The imaging apparatus of claim 12 , wherein the rotation of the second waveguide is not altered or affected by the second coupling optic.

15. The imaging apparatus of claim 12 , wherein the rotation of the first coupling optic and the rotation of the second coupling optic are synchronized.

16. The imaging apparatus of claim 12 , wherein the first, second, third, and fourth waveguides are each optical fibers.

17. The imaging apparatus of claim 12 , wherein the first coupling optic and the second coupling optic both comprise a collimator.

18. The imaging apparatus of claim 17 , wherein the collimator for the first coupling optic is a GRIN lens and the collimator for the second coupling optic is a GRIN lens.

19. The rotary junction of claim 1 , wherein the fourth waveguide is configured to be coupled to one or more detectors.

20. The imaging apparatus of claim 12 , wherein the fourth waveguide is configured to be coupled to one or more detectors.

Assignees

• Canon Usa Inc
• Massachusetts Gen Hospital

Inventors

• Ikuta Mitsuhiro
• Kang Dongkyun
• Tearney Guillermo J

Classifications

• G02B23/2407

  Optical details · CPC title

• G02B6/32

  having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)} · CPC title

• G02B6/3604 Primary

  Rotary joints allowing relative rotational movement between opposing fibre or fibre bundle ends · CPC title