CN211402828U - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
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- CN211402828U CN211402828U CN202020049932.6U CN202020049932U CN211402828U CN 211402828 U CN211402828 U CN 211402828U CN 202020049932 U CN202020049932 U CN 202020049932U CN 211402828 U CN211402828 U CN 211402828U
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Abstract
The utility model discloses an optical fiber collimator, in the utility model, the optical fiber collimator comprises a collimating lens, an optical fiber joint, a first sleeve for installing the collimating lens, a second sleeve for fixing the optical fiber joint and a third sleeve for fastening the optical fiber joint; the collimating lens is fixedly arranged at one end of the first sleeve; the second sleeve is connected with one end of the first sleeve, which is far away from the collimating lens, through threads; a first internal thread is arranged at the connecting end of the first sleeve and the second sleeve; a first external thread matched with the first internal thread is arranged at the connecting end of the second sleeve and the first sleeve; welding and fixing the second sleeve and the third sleeve by laser welding; the optical fiber connector and the access end of the optical fiber are connected with a capillary tube, and the optical fiber connector and the capillary tube are welded and fixed through laser welding; the capillary is fixed by a third sleeve. The utility model provides an optical collimator is rational in infrastructure, the production installation of being convenient for, and the practicality is high and stable in structure.
Description
Technical Field
The utility model relates to an optical fiber communication equipment field, in particular to optical collimator.
Background
The optical communication network is composed of a plurality of optical devices, and the precision and the coupling efficiency between the optical fiber and other optical devices influence the performance of the optical communication network. There is therefore a need for a fiber collimator to improve the coupling efficiency from fiber to fiber or fiber to device, reducing insertion loss. The optical fiber collimator is one of basic devices for constructing optical communication systems and networks, and therefore, the optical fiber collimator is required to improve the coupling efficiency between optical fibers or between optical fibers and devices and reduce the insertion loss.
The components of the traditional optical fiber collimator are usually fixedly connected together through glue, and when the temperature changes or the defects of divergence angle change, light beam direction change and the like exist in a mechanical environment, the practicability and the stability of the traditional optical fiber collimator are directly influenced.
SUMMERY OF THE UTILITY MODEL
In view of the defects existing in the prior art, the technical problem to be solved in the utility model is to provide an optical fiber collimator, aim at improving optical fiber collimator's practicality and stability, optimize optical fiber collimator's structure, be convenient for produce the installation.
In order to achieve the above object, the present invention provides an optical fiber collimator, which includes a collimating lens, an optical fiber connector, a first sleeve for installing the collimating lens, a second sleeve for fixing the optical fiber connector, and a third sleeve for fastening the optical fiber connector; the collimating lens is fixedly arranged at one end of the first sleeve; the second sleeve is connected with one end of the first sleeve, which is far away from the collimating lens, through threads; a first internal thread is arranged at the connecting end of the first sleeve and the second sleeve; a first external thread matched with the first internal thread is arranged at the connecting end of the second sleeve and the first sleeve; welding and fixing the second sleeve and the third sleeve by laser welding; the optical fiber connector and the access end of the optical fiber are connected with a capillary tube, and the optical fiber connector and the capillary tube are welded and fixed through laser welding; the capillary tube is fixed by the third sleeve.
In the technical scheme, the collimating lens is arranged in the first sleeve, so that the collimating lens is protected, and the phenomenon that the collimating lens is damaged in the assembling or using process to cause the increase of optical path loss can be prevented; the distance between the collimating lens and the optical fiber connector is convenient to adjust by setting the connection mode of the first sleeve and the second sleeve to be threaded connection; by disposing the collimating lens within the first sleeve and disposing the fiber optic connector within the second sleeve, concentricity of the collimating lens and the fiber optic connector is ensured; the second sleeve and the third sleeve are welded together in the laser welding mode, so that the temperature and the structural stability of the optical fiber collimator are improved; the components of the optical fiber collimator are fixedly connected without glue, so that the pollution of the glue to the optical component and the optical end face is reduced.
In a specific embodiment, a first plane and a second plane are arranged on the light-emitting end face of the optical fiber connector, the first plane is parallel to the light-entering end face of the optical fiber connector, and an included angle of 8 degrees is formed between the second plane and the first plane; and the light-emitting end face of the optical fiber connector is polished and plated with an antireflection film.
In the technical scheme, the second plane is set to be an inclined end face, so that the feedback of high-power laser can be avoided; the polishing and film coating treatment of the light-emitting end face of the optical fiber connector reduces the loss of optical transmission signals and improves the optical performance of the optical fiber collimator.
In a specific embodiment, a third plane and a fourth plane are disposed on a light-entering end surface of the collimating lens, the third plane is parallel to and opposite to the first plane, and the fourth plane is parallel to and opposite to the second plane; the light-emitting end face of the collimating lens is a spherical surface.
In this embodiment, the third plane and the fourth plane are parallel to the first plane and the second plane, respectively, so that the alignment ratio of the optical fiber is improved.
In another specific embodiment, the light-entering end surface of the collimating lens and the light-exiting end surface of the collimating lens are both polished and coated with an antireflection film.
In the technical scheme, the light-in end face of the collimating lens and the light-out end face of the collimating lens are polished and coated, so that the loss of light transmission signals is further reduced, and the optical performance of the optical fiber collimator is improved.
In a specific embodiment, the first sleeve is provided with a second external thread at an end opposite to the connecting end of the first sleeve and the second sleeve.
In the technical scheme, the two optical fiber collimators are conveniently connected through the sleeve by arranging the second external threads.
In another embodiment, the first sleeve has a fixing flange integrally formed on an outer portion thereof.
In the technical scheme, the optical fiber collimator is convenient to mount and fix by arranging the fixing flange.
In one embodiment, the capillary tube has an inner diameter that is divided into two portions, a first portion that tapers from the opening to a second portion.
In the technical scheme, the first part of the inner diameter of the capillary is set to be of a gradually-reduced structure, so that an optical fiber is conveniently inserted into the capillary when the optical fiber collimator is used, and the installation efficiency is improved.
In a specific embodiment, the first sleeve, the second sleeve, the third sleeve and the capillary are all made of transparent glass.
In the technical scheme, the main components of the optical fiber collimator are arranged to be transparent glass, so that the internal condition of the optical fiber collimator can be observed conveniently, and the components of the optical fiber collimator can be adjusted conveniently during assembly.
The utility model has the advantages that: in the utility model, 1), the collimating lens is arranged in the first sleeve, and the collimating lens is protected, so that the collimating lens is prevented from being damaged in the assembling or using process, and the light path loss is prevented from being increased; 2) the connection mode of the first sleeve and the second sleeve is set to be threaded connection, so that the distance between the collimating lens and the optical fiber connector can be conveniently adjusted; 3) ensuring concentricity of the collimating lens and the fiber optic splice by disposing the collimating lens within the first sleeve and disposing the fiber optic splice within the second sleeve; 4) the second sleeve and the third sleeve are welded together in a laser welding mode, so that the temperature and the structural stability of the optical fiber collimator are improved; 5) and all components of the optical fiber collimator are fixedly connected without glue, so that the pollution of the glue to the optical component and the optical end face is reduced. The optical fiber collimator is reasonable in structure and convenient to produce and install.
Drawings
Fig. 1 is a schematic structural diagram of an optical fiber collimator according to an embodiment of the present invention.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
as shown in fig. 1, in an embodiment of the present invention, the optical fiber collimator includes a collimating lens 100, an optical fiber connector 200, a first sleeve 300 for installing the collimating lens 100, a second sleeve 400 for fixing the optical fiber connector 200, and a third sleeve 500 for fastening the optical fiber connector 200; the collimating lens 100 is fixedly installed at one end of the first sleeve 300; the second sleeve 400 is screwed with the end of the first sleeve 300 away from the collimating lens 100; the connecting end of the first sleeve 300 and the second sleeve 400 is provided with a first internal thread; the connecting end of the second sleeve 400 and the first sleeve 300 is provided with a first external thread matched with the first internal thread; the second sleeve 400 and the third sleeve 500 are welded and fixed by laser welding; the optical fiber connector 200 and the access end of the optical fiber 600 are connected with a capillary tube 700, and the optical fiber connector 200 and the capillary tube 700 are welded and fixed through laser welding; the capillary 700 is fixed by the third sleeve 500.
In this embodiment, the light-emitting end surface of the optical fiber connector 200 is provided with a first plane and a second plane, the first plane is parallel to the light-entering end surface of the optical fiber connector 200, and the second plane and the first plane form an included angle of 8 degrees; the light-emitting end face of the optical fiber connector 200 is polished and coated with an antireflection film.
In this embodiment, a third plane and a fourth plane are disposed on the light-entering end surface of the collimating lens 100, the third plane is parallel to and opposite to the first plane, and the fourth plane is parallel to and opposite to the second plane; the light-emitting end surface of the collimating lens 100 is a spherical surface.
In another embodiment, the light-entering end surface of the collimating lens 100 and the light-exiting end surface of the collimating lens 100 are both polished and coated with an antireflection film.
In this embodiment, one end of the first sleeve 300 opposite to the connection end of the first sleeve 300 and the second sleeve 400 is provided with a second external thread.
In another embodiment, the first sleeve 300 is integrally formed with a fixing flange 301.
In this embodiment, the inner diameter of the capillary 700 is divided into two portions, the first portion gradually decreasing from the opening to the second portion.
In this embodiment, the first sleeve 300, the second sleeve 400, the third sleeve 500 and the capillary tube 700 are made of transparent glass.
In this embodiment, when the optical fiber collimator is used, the optical fiber 600 may be inserted into the optical fiber connector 200 through the capillary 700; when the two optical fiber collimators are combined, the two optical fiber collimators can be connected by the second external thread through the external sleeve; the distance between the collimating lens 100 and the optical fiber connector 200 is conveniently adjusted by setting the connection manner of the first sleeve 300 and the second sleeve 400 as a threaded connection; by disposing the collimating lens 100 within the first sleeve 300 and the fiber optic connector 200 within the second sleeve 400, concentricity of the collimating lens 100 and the fiber optic connector 200 is ensured; the second sleeve 400 and the third sleeve 500 are welded together by means of the laser welding, so that the temperature and structural stability of the optical fiber collimator are improved.
Specific embodiments of the present invention have been described above in detail. It is to be understood that the specific embodiments of the invention are not exclusive and that numerous modifications and variations may be made by those skilled in the art in light of the teaching of the present invention within the scope of the appended claims. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the embodiments of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A fiber optic collimator, characterized by: the optical fiber collimator comprises a collimating lens, an optical fiber joint, a first sleeve for installing the collimating lens, a second sleeve for fixing the optical fiber joint and a third sleeve for fastening the optical fiber joint; the collimating lens is fixedly arranged at one end of the first sleeve; the second sleeve is connected with one end of the first sleeve, which is far away from the collimating lens, through threads; a first internal thread is arranged at the connecting end of the first sleeve and the second sleeve; a first external thread matched with the first internal thread is arranged at the connecting end of the second sleeve and the first sleeve; welding and fixing the second sleeve and the third sleeve by laser welding; the optical fiber connector and the access end of the optical fiber are connected with a capillary tube, and the optical fiber connector and the capillary tube are welded and fixed through laser welding; the capillary tube is fixed by the third sleeve.
2. A fiber optic collimator according to claim 1 wherein: the light-emitting end face of the optical fiber connector is provided with a first plane and a second plane, the first plane is parallel to the light-entering end face of the optical fiber connector, and an included angle of 8 degrees is formed between the second plane and the first plane; and the light-emitting end face of the optical fiber connector is polished and plated with an antireflection film.
3. A fiber optic collimator according to claim 2 wherein: a third plane and a fourth plane are arranged on the light inlet end face of the collimating lens, the third plane is parallel to and opposite to the first plane, and the fourth plane is parallel to and opposite to the second plane; the light-emitting end face of the collimating lens is a spherical surface.
4. A fiber optic collimator according to claim 3 wherein: and the light inlet end face of the collimating lens and the light outlet end face of the collimating lens are polished and coated with antireflection films.
5. A fiber optic collimator according to claim 1 wherein: and a second external thread is arranged at one end of the first sleeve, which is opposite to the connecting end of the first sleeve and the second sleeve.
6. A fiber optic collimator according to claim 5 wherein: a fixing flange is integrally formed outside the first sleeve.
7. A fiber optic collimator according to claim 1 wherein: the inner diameter of the capillary tube is divided into two portions, the first portion gradually decreasing from the opening to the second portion.
8. A fiber optic collimator according to claim 1 wherein: the first sleeve, the second sleeve, the third sleeve and the capillary are all made of transparent glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049932.6U CN211402828U (en) | 2020-01-10 | 2020-01-10 | Optical fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049932.6U CN211402828U (en) | 2020-01-10 | 2020-01-10 | Optical fiber collimator |
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| Publication Number | Publication Date |
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| CN211402828U true CN211402828U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020049932.6U Active CN211402828U (en) | 2020-01-10 | 2020-01-10 | Optical fiber collimator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093340A (en) * | 2021-03-19 | 2021-07-09 | 中国航天时代电子有限公司 | Optical fiber collimator resistant to strong explosion impact |
| CN114137665A (en) * | 2021-10-28 | 2022-03-04 | 杰讯光电(福建)有限公司 | Manufacturing method of 5G optical fiber collimator |
| CN114185133A (en) * | 2021-12-10 | 2022-03-15 | 中国科学院长春光学精密机械与物理研究所 | Divergence angle continuously adjustable optical fiber collimator |
-
2020
- 2020-01-10 CN CN202020049932.6U patent/CN211402828U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093340A (en) * | 2021-03-19 | 2021-07-09 | 中国航天时代电子有限公司 | Optical fiber collimator resistant to strong explosion impact |
| CN114137665A (en) * | 2021-10-28 | 2022-03-04 | 杰讯光电(福建)有限公司 | Manufacturing method of 5G optical fiber collimator |
| CN114137665B (en) * | 2021-10-28 | 2024-03-26 | 杰讯光电(福建)有限公司 | Manufacturing method of 5G optical fiber collimator |
| CN114185133A (en) * | 2021-12-10 | 2022-03-15 | 中国科学院长春光学精密机械与物理研究所 | Divergence angle continuously adjustable optical fiber collimator |
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