CN210513627U

CN210513627U - Optical fiber end rod output light beam position testing device

Info

Publication number: CN210513627U
Application number: CN201921770056.XU
Authority: CN
Inventors: 吴娟; 颜宏; 陈黎; 张永红; 余鸿铭
Original assignee: Institute of Applied Electronics of CAEP
Current assignee: Institute of Applied Electronics of CAEP
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-05-12
Anticipated expiration: 2029-10-21

Abstract

The utility model discloses a testing device for the position of an output light beam of an optical fiber end rod, which at least comprises an optical fiber laser, an optical fiber end rod, a LED white light desk lamp and an optical fiber end rod testing platform, wherein the optical fiber end rod testing platform comprises a platform base, and an end rod clamp, a scattering screen and a camera which are arranged on the platform base; the optical fiber end rod is welded with the tail fiber of the optical fiber laser, and the optical fiber end rod is fixed on the end rod clamp; the LED white light desk lamp is arranged on the side of the optical fiber end rod test platform; the camera is arranged in front of the front surface of the optical fiber end rod; the scattering screen is arranged between the optical fiber end rod and the camera. Through the utility model discloses device structural design for the tester can accurately record the central deviation of output beam and end stick front surface fast, thereby judges the butt fusion effect of optical fiber end stick, screens bad product.

Description

Optical fiber end rod output light beam position testing device

Technical Field

The utility model belongs to the technical field of the test, especially, relate to an optical fiber end stick output light beam position testing arrangement.

Background

The optical fiber end rod is a light beam collimation output element of the optical fiber laser, and the central position deviation of output light beams on the optical fiber end rod is one of important indexes for detecting the welding effect of the end rod and a tail fiber of the optical fiber laser.

The smaller the deviation of the distance between the center of the output light beam and the center of the front surface of the end rod is, the better the fusion effect is proved, and when the center of the output light beam is seriously deviated from the center of the front surface of the end rod, the optical fiber end rod has the serious light leakage problem, has potential safety hazards and cannot be applied to practice.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to overcome the prior art problem, an optical fiber end rod output beam central position testing device is provided, the central deviation of the output beam and the front surface of the end rod can be accurately measured, so that the welding effect of the optical fiber end rod is judged, and poor products are screened.

The purpose of the utility model is realized through the following technical scheme:

a testing device for the position of an output beam of an optical fiber end rod at least comprises an optical fiber laser, the optical fiber end rod, an LED white light desk lamp and an optical fiber end rod testing platform, wherein the optical fiber end rod testing platform comprises a platform base, and an end rod clamp, a scattering screen and a camera which are arranged on the platform base; the optical fiber end rod is welded with the tail fiber of the optical fiber laser, and the optical fiber end rod is fixed on the end rod clamp; the LED white light desk lamp is arranged on the side of the optical fiber end rod test platform; the camera is arranged in front of the front surface of the optical fiber end rod; the scattering screen is arranged between the optical fiber end rod and the camera.

According to a preferred embodiment, the central axis of the fiber stub coincides with the central axis of the camera.

According to a preferred embodiment, the diffuser screen is placed 1mm from the front surface of the fiber stub.

The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; and the utility model discloses also can the independent assortment between (each non-conflict selection) selection and between other choices. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.

The utility model has the advantages that: through the utility model discloses device structural design for the tester can accurately record the central deviation of output beam and end stick front surface fast, thereby judges the butt fusion effect of optical fiber end stick, screens bad product.

Drawings

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

FIG. 2 is a schematic view of the edge position of the front surface of the fiber stub being detected by the camera of the present invention;

101-fiber laser, 102-fiber end rod, 103-LED white light desk lamp, 104-platform base, 105-end rod holder, 106-scattering screen and 107-camera.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Additionally, the utility model discloses it is pointed out that, in the utility model, if do not write out structure, connection relation, positional relationship, power source relation etc. that concretely relates to very much, then the utility model relates to a structure, connection relation, positional relationship, power source relation etc. are technical personnel in the field on prior art's basis, can not learn through creative work.

Example 1:

referring to fig. 1, a device for testing the output beam position of a fiber stub 102 is shown, and the device at least comprises a fiber laser 101, a fiber stub 102, an LED white light desk lamp 103 and a fiber stub 102 testing platform.

Further, the fiber stub 102 testing platform includes a platform base 104, and a stub holder 105, a diffuser screen 106, and a camera 107 disposed on the platform base 104.

Preferably, the fiber end rod 102 is fused to the tail of the fiber laser 101, and the fiber end rod 102 is fixed to the end rod holder 105.

Preferably, the LED white light table lamp 103 is disposed at the side of the test platform of the fiber end rod 102.

Preferably, the camera 107 is placed in front of the front surface of the fiber stub 102. Further, the central axis of the fiber stub 102 coincides with the central axis of the camera 107.

Preferably, the diffuser screen 106 is placed between the fiber stub 102 and the camera 107. Further, the diffuser screen 106 is placed at a position of 1mm of the front surface of the fiber stub 102.

The utility model discloses the application method of device as follows:

the fiber stub 102 is placed on a stub holder 105 on the test platform and secured. The central axis of the fixed fiber stub 102 is substantially coincident with the central axis of the camera 107, and the focal length of the camera 107 is adjusted, so that the camera 107 can clearly image the front surface of the fiber stub 102. The switch of the fiber laser 101 is turned on to make the fiber laser 101 emit light, and the scattering screen 106 is placed at a position about 1mm from the front surface of the fiber end rod 102. Turning off the indoor lighting source, collecting the output beam shape of the scattering screen 106 by the camera 107, calculating the pixel centroid position as (X)₁,Y₁). Then, the power supply of the fiber laser 101 is turned off, the scattering screen 106 is removed, the light source of the LED white light desk lamp 103 is turned on, and the pixel positions of the upper edge, the lower edge, the left edge and the right edge of the front surface of the fiber end rod are recorded as Y respectively_up、Y_down、X_left、X_rightAs shown in fig. 2.

The center of the profile of the front surface of the optical fiber end rod is set as (X)₀,Y₀)，(X₀,Y₀) The calculation method of (2) is as follows:

assuming that the fiber stub output beam is offset (Δ X, Δ Y) from the center pixel of the stub front surface, (Δ X, Δ Y) is calculated as follows:

ΔX＝X₁-X₀(3)

ΔY＝Y₁-Y₀(4)

the actual deviation between the output beam of the optical fiber end rod and the center of the front surface of the end rod is (delta x, delta y), and the calculation method comprises the following steps:

where d is the true profile diameter of the front surface (typically spherical) of the fiber stub.

The application case is as follows:

research and production a batch diameter for 7.5 mm's optic fibre end stick, d promptly is 7.5mm, uses the utility model discloses technical scheme, the device tested the distance deviation of end stick output beam center and end stick front surface center to the test result of one of them optic fibre end stick is exemplified: light beam centroid pixel position (X) of output light beam passing through scattering screen₁,Y₁) At (1014,992), the pixel positions of the upper, lower, left and right edges of the front surface of the optical fiber stub are X_left＝1108、X_right＝912、Y_up＝1094、Y_down898, then

Thus, Δ X ═ X₁-X₀＝4，ΔY＝Y₁-Y₀＝-4，

Thereby make the tester can accurate rapid survey output beam and the center deviation of holding excellent front surface to judge the butt fusion effect of optical fiber end stick, filter bad product.

The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A testing device for the position of an output beam of an optical fiber end rod is characterized by at least comprising an optical fiber laser (101), the optical fiber end rod (102), an LED white light desk lamp (103) and an optical fiber end rod testing platform,

the optical fiber end rod test platform comprises a platform base (104), and an end rod clamp (105), a scattering screen (106) and a camera (107) which are arranged on the platform base (104);

the optical fiber end rod (102) is welded with the tail fiber of the optical fiber laser (101), and the optical fiber end rod (102) is fixed on the end rod holder (105);

the LED white light desk lamp (103) is arranged on the side of the optical fiber end rod test platform;

the camera (107) is arranged in front of the front surface of the optical fiber end rod (102);

the diffuser screen (106) is placed between the fiber stub (102) and the camera (107).

2. A fiber stub output beam position measurement device as claimed in claim 1 wherein the central axis of the fiber stub (102) coincides with the central axis of the camera (107).

3. A fiber stub output beam position measuring device according to claim 1, wherein said diffuser screen (106) is placed 1mm from the front surface of said fiber stub (102).