CN102331603A - Fiber Coupler - Google Patents

Abstract

A fiber-coupled connector comprising a plug and a receptacle matched with the plug, the plug has a first optical fiber and a first lens coupled with the first optical fiber, the plug has a lens of the first lens One end has a positioning post, the socket has a second optical fiber and a second lens coupled with the second optical fiber, one end of the socket having the second lens has a positioning hole matched with the positioning post, the At least one protrusion is provided on the positioning column, and at least one groove is provided on the wall of the positioning hole to cooperate with the at least one protrusion.

Description

Fiber Coupler

technical field

The present invention relates to an optical fiber coupling connector.

Background technique

USB data transmission technology has been widely used. For example, a USB coupling connector is used to connect a computer to a printer to complete printing work, or a removable storage disk is inserted into a computer USB jack through a plug-in USB coupling connector to realize data transfer.

USB coupling connectors of different technical standards have different data transfer rates. For example, current USB 2.0 devices can operate at 480Mbps. As technology advances, fiber-coupled connectors with higher data transmission rates have emerged.

The optical fiber coupling connector includes a plug and a socket. The plug and the socket are made of plastic material. The plug and the plug respectively have an integrally formed lens, and are mutually positioned by a positioning structure arranged thereon.

Since the plug and socket are made of plastic material and are elastic, the docking depth of the lenses will be different due to the magnitude of the docking force when the lenses are docked, which will affect the uncertainty of the distance between the lenses, and the transmission efficiency will therefore be unstable.

Contents of the invention

In view of this, it is necessary to provide an optical fiber coupling connector with a certain distance between lenses.

A fiber-coupled connector comprising a plug and a receptacle matched with the plug, the plug has a first optical fiber and a first lens coupled with the first optical fiber, the plug has a One end has a positioning column, the socket includes a second optical fiber and a second lens coupled with the second optical fiber, the socket has a positioning hole that matches the positioning column at one end of the second lens, and At least one bump is provided on the positioning post, and at least one groove is formed on the wall of the positioning hole to match the at least one bump.

Compared with the prior art, when the plug of the optical fiber coupling connector of the embodiment of the present invention is docked with the socket, after the protrusion abuts against the bottom of the groove, the docking position of the plug and socket can be determined, and at the same time, the plug and socket can be ensured. the distance between.

Description of drawings

FIG. 1 is a schematic diagram of an optical fiber coupling connector according to an embodiment of the present invention.

Fig. 2 is an exploded view of the fiber coupling connector according to the embodiment of the present invention.

Description of main component symbols

Fiber-Coupled Connectors 10

plug 11

socket 12

First Lens 13

Second lens 14

Positioning post 110

Positioning hole 120

Bump 111

Groove 121

Detailed ways

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 and FIG. 2 , the fiber coupling connector 10 provided by the embodiment of the present invention includes a plug 11 and a receptacle 12 that are separated from each other. Wherein, the socket 12 is provided in equipment such as computer mainframe, printer, camera, etc., and the plug 11 is portable, and is used to cooperate with the socket 12 to input or output data to the aforementioned equipment.

The plug 11 uses four optical fibers to output or receive signals, and correspondingly, the socket 12 uses four optical fibers to transmit signals with the plug 11 .

Of course, the number of optical fibers can be changed according to actual needs.

The plug 11 is roughly square, corresponding to four optical fibers. One end of the plug 11 is provided with four first lenses 13 , the first lenses 13 are optically coupled with the fibers for outputting or receiving signals, and the first lenses 13 and the plug 11 are integrally formed.

The socket 12 is approximately square, corresponding to the first lens 13, and one end of the socket 12 is provided with four second lenses 14, the second lenses 14 are optically coupled with the optical fiber to realize signal transmission with the plug 11, the second lenses 14 and The socket 12 is integrally formed.

One end of the plug 11 having the first lens 13 is provided with a positioning post 110 , the positioning post 110 is conical, and the diameter of the positioning post 110 gradually decreases away from the plug 11 .

Corresponding to the positioning post 110 on the plug 11, the socket 12 is provided with a positioning hole 120 at one end of the second lens 14, and the diameter of the positioning hole 120 gradually increases away from the socket 12, so that the end of the positioning post 110 with a smaller diameter Align the larger diameter of the positioning hole 120 and insert into the positioning hole 120 . The positioning post 110 is inserted into the positioning hole 120 so that the optical axes of the first lens 13 and the second lens 14 coincide, and there is a certain distance between the first lens 13 and the second lens 14 to better couple optical signals.

Certainly, the positioning post 110 may also be in other shapes, for example, cylindrical, and accordingly, the shape of the positioning hole 120 changes accordingly.

A protrusion 111 is provided on the side of the positioning post 110 away from the first lens 13 , and the protrusion 111 extends from the end with the largest diameter of the positioning post 110 to the end with the smaller diameter. Corresponding to the protrusion 111, there is a groove 121 on the wall of the positioning hole 120. When the plug 11 is docked with the socket 12, the first lens 13 and the second lens can be determined after the protrusion 111 abuts against the bottom of the groove 121. 14 butt positioning, also can ensure the distance between the first lens 13 and the second lens 14.

Certainly, the protrusion 111 can also be arranged at other positions of the positioning post 110 , for example, the side of the positioning post 110 close to the first lens 13 , or the middle position of the positioning post 110 .

Certainly, the shape of the bump 111 can be various shapes, such as cylinder, cuboid, cone and so on.

It can be understood that the number of bumps 111 is not limited to one, and can be two, three, four, and so on. When the number is greater than or equal to two, the protrusions 111 are evenly distributed on the positioning post 110 .

The length of the protrusion 111 is not limited, and its length is less than the length of the positioning post 110, for example, it can be 100% of the length of the positioning post 110. wait.

Of course, when the shape, position, number, length, and distribution of the bumps 111 change, the grooves 121 on the positioning hole 120 must also change accordingly. In other words, the number of bumps 111 is equal to the number of grooves 121. The bumps 111 are in one-to-one correspondence with the grooves 121 .

It can be understood that when there are multiple protrusions 111 , the groove 121 may be an annular groove provided on the wall of the positioning hole 120 .

It can be understood that those skilled in the art can also make other changes within the spirit of the present invention for the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims (8)

1. A fiber optic coupling connector comprising a plug and a receptacle matched with the plug, the plug has a first optical fiber and a first lens coupled with the first optical fiber, the plug has the first One end of the lens has a positioning column, the socket has a second optical fiber and a second lens coupled with the second optical fiber, and the socket has a positioning hole matched with the positioning column at one end of the second lens, It is characterized in that at least one protrusion is provided on the positioning column, and at least one groove is provided on the wall of the positioning hole to cooperate with the at least one protrusion. 2. The optical fiber coupling connector according to claim 1, wherein the positioning column is conical, and its diameter gradually decreases in a direction away from the plug. 3. The optical fiber coupling connector according to claim 1, wherein the protrusion is disposed on a side of the positioning column away from the lens. 4. The optical fiber coupling connector according to claim 2, wherein the length of the protrusion is smaller than the length of the positioning post. 5. The optical fiber coupling connector according to claim 2, wherein the protrusion is cylindrical, square or conical. 6. The optical fiber coupling connector according to claim 2, wherein the protrusion is located in the middle of the positioning post. 7 . The optical fiber coupling connector according to claim 2 , wherein the number of the protrusions is greater than or equal to two, and they are evenly distributed on the positioning posts. 8 . 8. The optical fiber coupling connector according to any one of claims 1 to 7, wherein the number of the protrusions is equal to the number of the grooves.

Images