Multi-fiber ferrule with improved eye safety

Patent metadata

Field	Value
Publication number	US-12353022-B2
Application number	US-202418680536-A
Country	US
Kind code	B2
Filing date	May 31, 2024
Priority date	May 22, 2015
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A multi-fiber ferrule has lenses that have different prescriptions to disperse the light emitted from the multi-fiber ferrule. Alternatively, the lens for each individual optical fiber can be moved relative to the optical fiber or the optical fiber opening in the multi-fiber ferrule to cause the laser beam exiting the multi-fiber ferrule to be redirected into a structure that absorbs or blocks the laser.

First claim

We claim:

1. A fiber optic connector comprising:
an inner housing having a top side, a bottom side, two opposing sides joining the top side to the bottom side, a front end, a back end, and an inside surface extending between the front and back ends defining an opening in the inner housing to receive a multi-fiber ferrule, the multi-fiber ferrule including:
a plurality of optical fiber openings extending toward a front of the multi-fiber ferrule, each of the plurality of optical fiber openings configured to receive an optical fiber,
a plurality of lenses respectively disposed forward of each of the optical fiber openings, each of the plurality of lenses being in optical alignment with a respective one of the optical fiber openings, and
wherein light incident on each of the plurality of lenses from the optical fiber respectively disposed within the optical fiber openings is directed to an inside surface of the inner housing, and
wherein the top side of the inner housing has a geometry different from a geometry of the bottom side of the inner housing at the front end of the inner housing.

2. The fiber optic connector of claim 1 , wherein the top side has a protruding portion and the bottom side has a corresponding recessed portion, or vice-versa, at the front end of the inner housing.

3. The fiber optic connector of claim 1 , wherein the inner housing has a cutout at the front end to form the geometry of the top side different from the geometry of the bottom side.

4. The fiber optic connector of claim 1 , further comprising an outer housing at least partially surrounding the inner housing.

5. The fiber optic connector of claim 1 , further comprising a boot surrounding the optical fiber rearward of the inner housing.

6. The fiber optic connector of claim 1 , wherein the multi-fiber ferrule has a unitary main body.

7. A mated pair of two fiber optic connectors, each of the two fiber optic connectors identical to the fiber optic connector of claim 1 , wherein a first fiber optic connector in the mated pair is oriented such that the top side of the inner housing of the first fiber optic connector is mated with the bottom side of the inner housing of a second fiber optic connector in the mated pair.

8. An optical fiber connection system, comprising:
a first fiber optic connector including:
a first inner housing having a top side, a bottom side, two opposing sides joining the top side to the bottom side, a front end, a back end, and an inside surface extending between the front and back ends defining an opening in the first inner housing, and
a multi-fiber ferrule received within the opening and having a plurality of optical fiber openings extending toward a front of the multi-fiber ferrule to respectively receive an optical fiber in each of the plurality of optical fiber openings, and a plurality of lenses respectively disposed forward of each of the optical fiber openings, each of the plurality of lenses being in optical alignment with a respective one of the optical fiber openings,
wherein light incident on each of the plurality of lenses from the optical fiber respectively disposed within the optical fiber openings is directed to an inside surface of the inner housing,
wherein the top side of the first inner housing has a geometry different from a geometry of the bottom side of the first inner housing at the front end of the inner housing; and

a second fiber optic connector including:
a second inner housing also having a top side, a bottom side, two opposing sides joining the top side to the bottom side, a front end, a back end, and an inside surface extending between the front and back ends defining an opening in the second inner housing, and
a multi-fiber ferrule received within the opening and having a plurality of optical fiber openings extending toward a front of the multi-fiber ferrule to respectively receive an optical fiber in each of the plurality of optical fiber openings, and a plurality of lenses respectively disposed forward of each of the optical fiber openings, each of the plurality of lenses being in optical alignment with a respective one of the optical fiber openings,
wherein light incident on each of the plurality of lenses from the optical fiber respectively disposed within the optical fiber openings is directed to an inside surface of the second inner housing,
wherein the top side of the second inner housing has a geometry different from a geometry of the bottom side of the second inner housing at the front end of the inner housing,
wherein in a mated configuration, the top side of the first inner housing is aligned with the bottom side of the second inner housing, and the bottom side of the first inner housing is aligned with the top side of the second inner housing.

9. The optical fiber connection system of claim 8 , wherein the first fiber optic connector further comprises a first outer housing at least partially surrounding the first inner housing.

10. The optical fiber connection system of claim 8 , wherein the second fiber optic connector further comprises a second outer housing at least partially surrounding the second inner housing.

11. The optical fiber connection system of claim 8 , wherein the first fiber optic connector further comprises a first outer housing at least partially surrounding the first inner housing, and wherein the second fiber optic connector further comprises a second outer housing at least partially surrounding the second inner housing.

12. The optical fiber connection system of claim 8 , wherein the multi-fiber ferrule of the first fiber optic connector has a unitary main body.

13. The optical fiber connection system of claim 8 , wherein the multi-fiber ferrule of the second fiber optic connector has a unitary main body.

14. The optical fiber connection system of claim 8 , wherein the multi-fiber ferrule of both the first fiber optic connector and the second fiber optic connector has a unitary main body.

15. The optical fiber connection system of claim 8 , wherein the top side of the first inner housing has a protruding portion and the bottom side of the first inner housing has a corresponding recessed portion, or vice-versa, at the front end of the first inner housing.

16. The optical fiber connection system of claim 15 , wherein the bottom side of the second inner housing has a protruding portion and the top side of the second inner housing has a corresponding recessed portion, or vice-versa, at the front end of the second inner housing.

17. The optical fiber connection system of claim 16 , wherein in the mated configuration, the protruding portion of one of the first inner housing or the second inner housing is aligned with the corresponding recessed portion of the other of the first inner housing or the second inner housing.

18. The optical fiber connection system of claim 8 , wherein the first fiber optic connector and the second fiber optic connector each have a boot surrounding the optical fiber rearward of the first inner housing and the second inner housing, respectively.

19. The optical fiber connection system of claim 8 , wherein the mated configuration occurs inside an adapter.

20. A fiber optic connector comprising:
an inner housing having a top side, a bottom side, two opposing sides joining the top side to the bottom side, a front end, a back end, and an inside surface extending between the front and back ends defining an opening in the inner housing to receive a multi-fiber ferrule, the multi-fiber ferrule including:
a plurality of optical fiber

Assignees

• Us Conec Ltd

Inventors

• Childers Darrell R
• Hughes Michael E
• Kurtz Daniel D

Classifications

• G02B6/3825

  with an intermediate part, e.g. adapter, receptacle, linking two plugs · CPC title

• G02B2006/4297

  having protection means, e.g. protecting humans against accidental exposure to harmful laser radiation · CPC title

• G02B6/3885

  Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type (optical ribbon cable G02B6/4403, G02B6/448) · CPC title

• G02B6/3853 Primary

  Lens inside the ferrule (lensed connectors G02B6/32) · CPC title