Advanced fiber-optic contact and method

• US 10,379,305 B2
• Filed: 03/13/2018
• Issued: 08/13/2019
• Est. Priority Date: 07/30/2012
• Status: Active Grant

• Current Assignee: Glenair Incorporated
• Original Assignee: Glenair Incorporated
• Inventors: Logan, Jr., Ronald T., Zargari, Sean, Ghara, Mehrdad, Do, Huan
• Primary Examiner(s): Kianni, Kaveh C
• Application Number:
  US15/920,138
• Publication Number:
  US 20180203196A1
• Time in Patent Office: 518 Days
• Field of Search: 385 92
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3822 with beveled fibre ends
• CPC Class Codes: G02B 6/3831 comprising a keying element on the plug or adapter, e.g. to forbid wrong connection keying element on the ferrule G02B6/3851; keying element for electrical coupling H01R13/64
• CPC Class Codes: G02B 6/3871 Ferrule rotatable with respect to plug body, e.g. for setting rotational position adjusting fibre within the ferrule, G02B6/3843; Fixation of ferrules after rotation
• CPC Class Codes: G02B 6/4206 Optical features G02B6/4207, G02B6/421 take precedence
• CPC Class Codes: G02B 6/423 using guiding surfaces for the alignment
• CPC Class Codes: G02B 6/4245 Mounting of the opto-electronic elements
• CPC Class Codes: G02B 6/4281 the printed circuit boards being flexible in general H05K1/147
• CPC Class Codes: G02B 6/4284 of optical modules with disconnectable electrical connectors latching arms for electrical connectors H01R13/627
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing

Abstract

An opto-electronic contact, method and connection system can utilize an active opto-electronic converter configured for removable optical engagement with an opposing contact. A barrel housing defines an interior cavity to capture the converter in the interior cavity for external optical engagement to the opposing contact via the first barrel opening for relative movement of the converter axis along the elongation axis, transverse thereto, and oblique thereto to accommodate mating tolerances responsive to engaging the opposing contact. A flexible circuit board assembly can be used to externally electrically interface the converter.

Claims

1. An opto-electronic contact, comprising:

an active opto-electronic converter including a converter length extending between opposing first and second ends to define a converter axis and said first end including a ferrule that is configured for removable optical engagement with an opposing contact, the ferrule including a ferrule tip;

a precision alignment sleeve defining a passage for receiving the ferrule such that the ferrule tip is received within the passage; and

a barrel housing defining an interior cavity having an elongated length extending between opposing first and second barrel openings to define an elongation axis and having said opto-electronic converter captured in the interior cavity for external optical engagement of the ferrule to the opposing contact via the first barrel opening for movement of the active opto-electronic converter, including said ferrule and said precision alignment sleeve, relative to the barrel housing such that the converter axis is movable at least oblique to the elongation axis to accommodate mating tolerances responsive to engaging the opposing contact and to protect at least the precision alignment sleeve from damage responsive to the relative movement.

2. The opto-electronic contact of claim 1 wherein the opposing contact is one of an opposing opto-electronic contact and an opposing passive fiber optic contact.

3. The opto-electronic contact of claim 1 wherein the opto-electronic converter is captured in the barrel housing such that the opto-electronic converter, when unmated to the opposing contact, is not resiliently biased against the barrel housing.

4. The opto-electronic contact of claim 1 including an annular support clip that engages an annular inner peripheral sidewall configuration of the barrel housing and an annular outer peripheral sidewall configuration of the opto-electronic converter to limit movement of the opto-electronic converter in the barrel housing to said relative movement such that the opto-electronic converter is retained in the barrel housing.

5. The opto-electronic contact of claim 4 wherein the annular support clip is a C-shaped retaining ring.

6. The opto-electronic contact of claim 5 wherein said barrel housing defines a barrel housing groove in said inner peripheral sidewall and said outer peripheral sidewall configuration of the opto-electronic converter defines a converter groove to cooperatively seat the annular support clip.

7. The opto-electronic contact of claim 1 further comprising an annular support clip that defines a support clip aperture and a support clip outer periphery, and an annular inner peripheral sidewall configuration of the barrel housing is configured to capture the annular support clip outer periphery having the opto-electronic converter slidingly received in the support clip aperture to provide said relative movement.

8. The opto-electronic contact of claim 7 wherein the opto-electronic converter defines a pair of confronting annular shoulders between which the annular support clip is slidingly received.

9. The opto-electronic contact of claim 8 wherein said opto-electronic converter defines an at least generally cylindrical surface that extends between said confronting annular shoulders and through said support clip aperture such that the support clip slides along said cylindrical surface.

10. The opto-electronic contact of claim 9 including a biasing spring having opposing spring ends and defining a spring aperture between the opposing spring ends through which the at least generally cylindrical surface is received such that the opposing spring ends are resiliently captured between one of the annular shoulders and the support clip to at least provide for movement of the opto-electronic converter into the barrel housing along the elongation axis by compressing the biasing spring responsive to engaging the opposing contact.

11. The opto-electronic contact of claim 10 wherein the support clip is resiliently seatable against the other one of the annular shoulders by the biasing spring when the contact is disengaged from the opposing contact.

12. The opto-electronic contact of claim 10 wherein the biasing spring is a coil spring.

13. The opto-electronic contact of claim 1 configured to cooperate with the opposing contact for free space collimated coupling with the opposing contact.

14. The opto-electronic contact of claim 1 wherein the barrel housing supports the active opto-electronic converter to engage the opposing contact in a rotationally indexed orientation to provide a predetermined degree of tolerance in an engaged rotational orientation.

15. The opto-electronic contact of claim 14 wherein the ferrule includes an angle polished configuration to engage a cooperating angle polished configuration on said opposing contact.

16. The opto-electronic contact of claim 14 wherein said barrel housing includes a peripheral outline having a keying arrangement to establish the predetermined degree of tolerance.

17. The opto-electronic contact of claim 1, further comprising:

a flexible circuit board assembly having an internal electrical connection end, an external electrical connection end and an elongated length extending therebetween, said internal connection end electrically engaging the active opto-electronic converter and said external connection end arranged proximate to the second barrel opening for external electrical connection to the opto-electronic contact.

18. The opto-electronic contact of claim 17 wherein the external connection end is fixedly positioned on the elongation axis at a distance from the second end of the opto-electronic converter that is less than an elongated length of the flexible circuit board and the elongated length is captured within said interior cavity of the barrel housing.

19. The opto-electronic contact of claim 17 wherein an intermediate portion of the elongated length of the flexible circuit board assembly is fixedly captured at the second opening of the barrel housing such that the external electrical connection end extends outward from the second opening of the barrel housing as a free end for forming an external electrical interface.

20. The opto-electronic contact of claim 1 wherein the barrel housing is at least generally circular in cross section transverse to the elongation axis.

21. The opto-electronic contact of claim 1 wherein the barrel housing is at least generally cylindrical.

22. The opto-electronic contact of claim 1 wherein the barrel housing is tubular in configuration.

23. The opto-electronic contact of claim 1 wherein the first and second barrel openings include a circular periphery.

24. The opto-electronic contact of claim 1 wherein the barrel housing is configured to support no more than one opto-electronic converter.

25. The opto-electronic contact of claim 1 wherein the precision alignment sleeve includes a split configuration for sliding onto the ferrule.

26. The opto-electronic contact of claim 1 further comprising:

an alignment sleeve retainer cap configured for threadably engaging a first end of the barrel housing surrounding the first barrel opening to capture the precision alignment sleeve on the ferrule within said passage.