CN212229250U

CN212229250U - TO laser tube optical fiber coupling module

Info

Publication number: CN212229250U
Application number: CN202021261512.0U
Authority: CN
Inventors: 刘成林; 周敢; 彭隆祥
Original assignee: Tengjing Technology Co ltd
Current assignee: Tengjing Technology Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-12-25
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a TO laser pipe fiber coupling module in the technical field of laser electronic components, including the support section of thick bamboo that link up from top TO bottom, the inner chamber lower part rigid coupling of a support section of thick bamboo has the LD laser, the lateral wall upper portion of a support section of thick bamboo cup joints and is fixed with an adapter section of thick bamboo of open-top, the open-top of an adapter section of thick bamboo runs through TO be provided with and stretches into the tubular metal resonator on a support section of thick bamboo inner chamber upper portion, the rigid coupling has the becket that can fix with the adapter section of thick bamboo top on the circumference wall of tubular metal resonator, the inner chamber bottom fixed mounting of tubular metal resonator has lens, the inner chamber of tubular metal resonator has inserted the fiber head from top TO bottom, the utility model discloses fix fiber head and lens on same tubular metal resonator, adjustable front and back and off-centre, the off-centre; the LD laser is independently fixed by the support cylinder with good heat conduction, so that the heat dissipation of the LD laser is facilitated, and the stability of a light source can be greatly improved.

Description

TO laser tube optical fiber coupling module

Technical Field

The utility model relates TO a laser electronic component technical field specifically is a TO laser tube fiber coupling module.

Background

The TO-packaged laser tube-based optical fiber coupling module is widely applied TO the fields of indication, machine vision measurement, biological analysis, medical treatment, industrial welding and the like, and has higher requirements on the coupling efficiency of laser power and the stability of a light source in measurement application with higher requirements.

In particular, laser single-mode fiber coupling is sensitive to tolerance, and the problems of low coupling efficiency and unstable power exist all the time. The coupling efficiency and stability are caused by many reasons, such as the packaging tolerance of the LD, the choice of the coupling lens, the heat dissipation condition of the LD, and the reasonableness of the mechanical structure design.

Based on this, the utility model designs a TO laser pipe fiber coupling module TO solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is TO provide a TO laser pipe fiber coupling module TO solve the especially laser single mode fiber coupling that proposes in the above-mentioned background art, it is more sensitive TO the tolerance, have the not high unstable problem of closing power of coupling efficiency always. There are many reasons for the coupling efficiency and stability, such as the packaging tolerance of the LD, the choice of the coupling lens, the heat dissipation of the LD, and the rationality of the mechanical structure design.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a TO laser pipe fiber coupling module, includes a support section of thick bamboo that link up from top TO bottom, the inner chamber lower part rigid coupling of a support section of thick bamboo has the LD laser instrument, the lateral wall upper portion of a support section of thick bamboo cup joints and is fixed with an open-top's switching section of thick bamboo, the open-top portion of a switching section of thick bamboo runs through TO be provided with and stretches into the tubular metal resonator on a support section of thick bamboo inner chamber upper portion, the rigid coupling has can with the fixed becket of a switching section of thick bamboo top on the circumference wall of tubular metal resonator, the inner chamber bottom fixed mounting of tubular metal resonator has lens.

Preferably, the metal ring comprises a metal ring main body, a stress release groove is formed in the circumferential wall of the metal ring main body, and the metal ring main body, the support cylinder and the metal pipe are welded by laser.

Preferably, the support cylinder and the adapter cylinder are connected through threads, and glue is coated at the threaded connection part.

Preferably, the optical fiber head and the inner cavity wall of the metal tube are fixed by gluing.

Preferably, the adapter cylinder, the metal pipe and the metal ring are all made of low-expansion weldable materials.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses

1. The optical fiber head and the lens are fixed on the same metal tube, and the front and back and eccentricity can be adjusted, so that the eccentricity and the front and back position tolerance caused by the encapsulation of the LD laser can be well compensated, and the coupling efficiency can be effectively improved;

2. the LD laser is independently fixed by the support barrel with good heat conduction, so that the heat dissipation of the LD laser is facilitated, and the stability of a light source can be greatly improved;

3. the metal ring is provided with the stress release groove, so that the purpose of releasing welding stress is achieved, and the problem of position deviation in the welding process is greatly reduced;

4. simple structure, low cost and high reliability.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic view of the metal ring structure of the present invention.

In the drawings, the reference numerals denote the following components:

the optical fiber laser comprises a 1-support barrel, a 2-LD laser, a 3-adapter barrel, a 4-metal tube, a 5-metal ring, a 51-metal ring main body, a 52-stress release groove, a 6-lens and a 7-optical fiber head.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring TO fig. 1-3, the present invention provides a technical solution of a TO laser tube fiber coupling module: the utility model provides a TO laser pipe fiber coupling module, a support section of thick bamboo 1 that link up from top TO bottom is drawn together, the inner chamber lower part rigid coupling of a support section of thick bamboo 1 has LD laser 2, a section of thick bamboo 3 that is fixed with open-top is cup jointed on the lateral wall upper portion of a support section of thick bamboo 1, the open-top department of a section of thick bamboo 3 runs through TO be provided with and stretches into the tubular metal resonator 4 on a support section of thick bamboo 1 inner chamber upper portion, the rigid coupling has can with the fixed becket 5 in a section of thick bamboo 3 top of switching on the circumference wall of tubular metal resonator 4, tubular metal resonator 4's inner chamber bottom fixed mounting has.

Further, the metal ring 5 comprises a metal ring main body 51, a stress release groove 52 is formed in the circumferential wall of the metal ring main body 51, and the metal ring main body 51, the support cylinder 1 and the metal pipe 4 are welded by laser; stress caused by welding is released through the stress release grooves 52, and stress generated in the laser welding process is reduced to the maximum extent.

Further, a support section of thick bamboo 1 and a switching section of thick bamboo 3 pass through threaded connection, and threaded connection department has scribbled glue, when can promoting device fixed strength, strengthens the efficiency of heat conduction.

Furthermore, the optical fiber head 7 and the inner cavity wall of the metal tube 4 are fixed by gluing, so that the optical fiber head 7 and the metal tube 4 can be conveniently fixed by the operation of workers.

Further, the adapter cylinder 3, the metal tube 4 and the metal ring 5 are all made of low-expansion weldable materials, such as stainless steel, and the like, which is not limited herein.

One specific application of this embodiment is: the utility model relates TO a TO laser pipe fiber coupling module, LD laser 2 are fixed TO a stake section of thick bamboo 1 through sticky or welded mode, and stake section of thick bamboo 1 uses the better material of heat conduction, like copper or aluminium. If there is soldering tin welding demand support section of thick bamboo 1 can make the copper, if can make aluminium with sticky, if the low-power LD fiber coupling that requires not high to the heat dissipation, can make a whole with support section of thick bamboo 1 and a switching section of thick bamboo 3, with stainless steel to reach the purpose of reduce cost and structure complexity. The lens 6 is fixed on the metal tube 4, the optical fiber head 7 and the metal tube 4 are fixed through glue, and the distance between the optical fiber head 7 and the lens 6 is controlled according to the ideal coupling position of the lens 6. During debugging, the metal ring 5 is placed on the adapter cylinder 3, the metal tube 4 with the lens 6 and the optical fiber head 7 can adjust the front and back positions of the lens 6 away from the LD laser 2 and can also adjust the eccentricity of the lens 6 and the LD laser 2, the eccentricity mainly is the assembly tolerance caused by the encapsulation of the LD laser 2, the coupling efficiency can be greatly influenced by the tolerance, and the compensation can not be realized only by adjusting the position of the optical fiber head 7. Firstly, after the front and back positions and the eccentric position are adjusted to be optimal, a laser welding machine is adopted to weld a plurality of welding points such as 3 or 6 at the connecting position of the metal ring 5 and the upper part of the metal pipe 4 at the same time; and then finely adjusting the eccentricity of the metal tube 4 with the lens 6 and the optical fiber head 7 to achieve the best, and then welding a plurality of welding points on the circumferential line of the joint of the metal ring 5 and the support cylinder 1 by a laser welding machine simultaneously to achieve the purpose of fixing the optical fiber.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a TO laser pipe fiber coupling module, includes a support section of thick bamboo (1) that link up from top TO bottom, its characterized in that: the inner chamber lower part rigid coupling of a support section of thick bamboo (1) has LD laser instrument (2), the lateral wall upper portion of a support section of thick bamboo (1) cup joints and is fixed with open-top's a switching section of thick bamboo (3), the open-top department of a switching section of thick bamboo (3) runs through to be provided with and stretches into tubular metal resonator (4) on a support section of thick bamboo (1) inner chamber upper portion, the rigid coupling has can with a metallic ring (5) of switching section of thick bamboo (3) top fixed on the circumference wall of tubular metal resonator (4), the inner chamber bottom fixed mounting of tubular metal resonator (4) has lens (6), the inner chamber of tubular metal resonator (4) has inserted fine (7) of.

2. The TO laser tube fiber coupling module of claim 1, wherein: the metal ring (5) comprises a metal ring main body (51), a stress release groove (52) is formed in the circumferential wall of the metal ring main body (51), and the metal ring main body (51), the support cylinder (1) and the metal pipe (4) are welded through laser.

3. The TO laser tube fiber coupling module of claim 1, wherein: the support barrel (1) is connected with the adapter barrel (3) through threads, and glue is coated at the threaded connection part.

4. The TO laser tube fiber coupling module of claim 1, wherein: and the optical fiber head (7) is fixedly bonded with the inner cavity wall of the metal tube (4) through glue.

5. The TO laser tube fiber coupling module of claim 1, wherein: the adapter cylinder (3), the metal pipe (4) and the metal ring (5) are all made of low-expansion weldable materials.