Optical fiber fusion splicer imaging system with precise position adjusting mechanism

Abstract

The utility model discloses an optical fiber fusion splicer imaging system with an accurate position adjusting mechanism, which comprises a microscope imaging device, a position adjusting support, a first adjusting screw, a second adjusting screw, a third adjusting screw and a fourth adjusting screw. A third adjusting screw and a fourth adjusting screw are installed on the two sides of the bottom of the position adjusting support respectively, an XY adjusting plate is arranged at the bottom of the microscope imaging device, the top of the third adjusting screw and the top of the fourth adjusting screw abut against the two sides of the XY adjusting plate, and the top of the first adjusting screw and the top of the second adjusting screw abut against the top of the microscope imaging device. The third adjusting screw and the fourth adjusting screw are adjusted to adjust movement in the X-axis direction and the Y-axis direction; the first adjusting screw and the second adjusting screw are used for adjusting rotation in the clockwise direction and the anticlockwise direction, the adjusting range is large, adjustment is regular, the adjusting efficiency is high, and the adjusting precision is high.

Description

Technical Field

[0001] The utility model belongs to an optical fiber fusion splicer imaging system with a precise position adjustment mechanism. Background Art

[0002] Fiber fusion splicers are mainly used for the construction and maintenance of optical cables in optical communications. They use a high-voltage arc to melt the two optical fiber sections and use a high-precision motion mechanism to smoothly push the two optical fibers into one to achieve coupling of the fiber mode fields. Fiber coupling requires observation and precise position alignment through an imaging device.

[0003] The optical imaging system is an important component of the fiber fusion splicer. When the fiber fusion splicer fuses optical fibers, the optical microscope camera system is used to obtain the alignment error of the two optical fibers to be fused. After adjusting this error to the allowable range, discharge arc heating is used, and the two optical fiber end faces are brought close to each other through the collimation mechanism to merge into a whole.

[0004] The imaging device generally adopts an adjustable mode, see patent number: CN201620347560, title: Adjustment structure of optical fiber fusion splicer imaging device, specifically as follows: As described in the embodiments and drawings of the patent specification, the optical fiber fusion splicer includes two microscope imaging devices and a fusion splicer mounting frame, and a mounting bevel formed by a 45° chamfer is provided between the upper end face of the fusion splicer mounting frame and the left and right side walls, and a mounting chamber is provided in the fusion splicer mounting frame that passes through its lower end face and the two mounting bevels, and each mounting bevel has a fixing plate extending to the front and rear sides respectively, and a fixing hole is opened on the fixing plate.

[0005] The two microscope imaging devices extend into the installation chamber from the two installation slopes of the fusion splicer installation frame respectively. The installation chamber reserves space for the two microscope imaging devices to move in the length direction of the installation slope. The lenses of the two microscope imaging devices are aimed at the fusion joint of the two optical fiber end faces. Adjustment plates are provided on the side walls of the microscope imaging devices corresponding to the positions of the fixed plates. Waist-shaped adjustment holes are respectively provided on the adjustment plates. The length direction of the waist-shaped adjustment holes is consistent with the length direction of the installation slope; two limit plates are extended downward on both sides of each adjustment plate. There is a certain gap between the limit plates and the side walls of the installation frame. A limit threaded hole is provided on each limit plate. The projection of the axial direction of the limit threaded hole on the horizontal plane is perpendicular to the projection of the length direction of the waist-shaped adjustment hole of the adjustment plate on the horizontal plane. The limit bolts pass through the limit threaded holes and rest against the front and rear side walls of the installation frame.

[0006] After the microscope imaging device is placed in the fusion splicer mounting frame, the adjusting screw passes through the waist-shaped adjusting hole of the adjusting plate and extends into the fixing hole of the fixing plate. When adjusting the position of the optical fiber fusion splicer imaging device, the limiting bolt is loosened to allow an adjustment gap between the limiting bolt and the side wall of the fusion splicer mounting frame, and then the microscope imaging device is moved along the length direction of the waist-shaped adjusting hole. After the adjustment is completed, the limiting bolt is fixed to abut against the side wall of the fusion splicer mounting frame to ensure that the position of the microscope imaging device is fixed.

[0007] See Figure 1 As shown, the above-mentioned microscope imaging device 1a uses the gap between the waist-shaped adjustment hole 3a on the adjustment plate 2a and the limit bolt 4a to adjust the position in the X-axis direction and the Y-axis direction, which has the following disadvantages:

[0008] 1) Since the adjustment is entirely done manually, the gap between the waist-shaped adjustment hole and the limit bolt is adjusted manually to adjust the position in the X-axis direction and the Y-axis direction. The adjustment efficiency is slow, the adjustment is irregular, and the adjustment accuracy is low.

[0009] 2) The adjustment range is limited. It can only adjust the displacement in the X-axis and Y-axis directions, and there is no adjustment in the clockwise and counterclockwise directions.

[0010] 3) The side wall of the microscope imaging device is provided with an adjustment plate, and waist-shaped adjustment holes are respectively opened on the adjustment plate. When the microscope imaging device is locked with a limit bolt, since the adjustment plate is made of plastic, the locking will be subject to a large deformation amplitude, thereby affecting the position of the already adjusted microscope imaging device. At the same time, since the plastic adjustment plate changes over time, the locking stress will gradually release, causing the imaging to shift, affecting the alignment accuracy. Summary of the invention

[0011] The utility model aims to provide an imaging system for an optical fiber fusion splicer with a precise position adjustment mechanism, so as to solve the technical problems in the prior art of manually adjusting the gap between a waist-shaped adjustment hole and a limit bolt to adjust the position in the X-axis direction and the Y-axis direction, resulting in slow adjustment efficiency, irregular adjustment and low adjustment accuracy.

[0012] The technical solution of the utility model is achieved in this way:

[0013] An imaging system of an optical fiber fusion splicer with a precise position adjustment mechanism includes a microscope imaging device, characterized in that it also includes a position adjustment bracket, a first adjustment screw, a second adjustment screw, a third adjustment screw and a fourth adjustment screw, a cavity is formed in the middle of the position adjustment bracket, the microscope imaging device is sleeved in the cavity, a mounting plate is provided on each side of the position adjustment bracket, a mounting hole is provided on the mounting plate, a first adjustment screw and a second adjustment screw are installed on the top of the position adjustment bracket, the first adjustment screw and the second adjustment screw are separated by a distance, a third adjustment screw and a fourth adjustment screw are installed on each side of the bottom of the position adjustment bracket, an XY adjustment plate is provided at the bottom of the microscope imaging device, the tops of the third adjustment screw and the fourth adjustment screw are against the two sides of the XY adjustment plate, and the tops of the first adjustment screw and the second adjustment screw are against the top of the microscope imaging device;

[0014] Adjusting the third adjustment screw and the fourth adjustment screw to adjust the movement of the microscope imaging device in the X-axis direction and the Y-axis direction;

[0015] The first adjusting screw and the second adjusting screw are used to adjust the rotation of the microscope imaging device in the clockwise and counterclockwise directions.

[0016] The above-mentioned arc-shaped parts are respectively arranged on both sides of the bottom of the microscope imaging device, and the third adjusting screw and the fourth adjusting screw are respectively installed on the arc-shaped parts on both sides of the bottom of the microscope imaging device, and the arc-shaped parts are opposite to the XY adjusting plate.

[0017] The above-mentioned position adjustment bracket is made of metal.

[0018] One side of the XY adjustment plate is an inclined plane with an inclination, the tops of the third adjustment screw and the fourth adjustment screw are against the inclined plane, and the other side of the XY adjustment plate is a plane and rests on the support plate of the position adjustment bracket.

[0019] The first adjusting screw and the second adjusting screw are located on both sides of the Y-axis.

[0020] The above-mentioned mounting plate is used to be mounted on the mounting platform on the frame of the optical fiber fusion splicer, and is fastened to the mounting platform by screws passing through mounting holes provided on the mounting plate.

[0021] A rotating adjustment plate is arranged on the top of the microscope imaging device, a second inclined plane is arranged on the rotating adjustment plate, and a second adjusting screw abuts against the second inclined plane.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] Effect 1: An XY adjustment plate is set at the bottom of the microscope imaging device, the tops of the third adjusting screw and the fourth adjusting screw are against the two sides of the XY adjustment plate, and the tops of the first adjusting screw and the second adjusting screw are against the top of the microscope imaging device; the third adjusting screw and the fourth adjusting screw are adjusted to adjust the movement of the microscope imaging device in the X-axis direction and the Y-axis direction; the first adjusting screw and the second adjusting screw are used to adjust the rotation of the microscope imaging device in the clockwise and counterclockwise directions. The adjustment range is large, and the adjustment is regular, with high adjustment efficiency and high adjustment accuracy.

[0024] Effect 2: When a mounting plate is provided on each side of the position adjustment bracket, mounting holes are provided on the mounting plates, and the mounting plates are used to be mounted on the mounting platform on the frame of the optical fiber fusion splicer, and screws are passed through the mounting holes provided on the mounting plates to tighten and fix them on the mounting platform. After installation, since the position adjustment bracket is made of metal, the frame of the optical fiber fusion splicer is also made of metal, the influence of force deformation on the adjustment accuracy is basically solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the installation of an existing optical fiber fusion splicer and a microscope imaging device;

[0026] Figure 2 This is the overall structure diagram of the optical fiber fusion splicer involved in the utility model;

[0027] Figure 3 A three-dimensional diagram of an imaging system for an optical fiber fusion splicer according to Embodiment 1 of the present utility model;

[0028] Figure 4 This is an exploded view of the imaging system of the optical fiber fusion splicer according to the first embodiment of the present utility model;

[0029] Figure 5 This is a front view of the imaging system of the optical fiber fusion splicer according to the first embodiment of the utility model;

[0030] Figure 6 for Figure 5 AA section view;

[0031] Figure 7 It is a right side view of the imaging system of the optical fiber fusion splicer according to the first embodiment of the utility model;

[0032] Figure 8 for Figure 7 BB cross-sectional view;

[0033] Fig. 9 This is a three-dimensional diagram of the optical fiber fusion splicer imaging system of the first embodiment of the utility model after the position adjustment bracket is hidden;

[0034] Fig.10 It is a three-dimensional diagram of the XY adjustment plate of the first embodiment of the utility model;

[0035] Fig.11 It is an installation schematic diagram of the first embodiment of the utility model. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Embodiment 1:

[0038] like Figure 2 As shown, this embodiment provides a fiber fusion splicer including a frame 100, two electrodes 101 are arranged inside the frame 100 for fusing optical fibers, and two microscope imaging devices 1 are installed on the frame 100, and the optical axes of the two microscope imaging devices 1 are at a 90-degree angle to each other, so as to take pictures to see whether two sections of optical fibers are well butted, and then the two electrodes 101 are used to fuse the optical fibers. We define the optical axis direction of the microscope imaging device 1 as the Z-axis direction. The position adjustment in the Z-axis direction is completed by the internal optical system of the microscope imaging device 1.

[0039] like Figures 3 to 11 As shown, this embodiment provides an optical fiber fusion machine imaging system with a precise position adjustment mechanism, including a microscope imaging device 1, characterized in that it also includes a position adjustment bracket 2, a first adjustment screw S4, a second adjustment screw S3, a third adjustment screw S2 and a fourth adjustment screw S1, a cavity 20 is formed in the middle of the position adjustment bracket 2, and the microscope imaging device 1 is sleeved in the cavity 20, a mounting plate 21 is respectively arranged on both sides of the position adjustment bracket 2, and a mounting hole 22 is arranged on the mounting plate 21, and the first adjustment screw S4 and the second adjustment screw S3 are installed on the top of the position adjustment bracket 2, The first adjusting screw S4 and the second adjusting screw S3 are separated by a distance, the third adjusting screw S2 and the fourth adjusting screw S1 are respectively installed on both sides of the bottom of the position adjustment bracket 2, an XY adjusting plate 3 is arranged at the bottom of the microscope imaging device 1, the tops of the third adjusting screw S2 and the fourth adjusting screw S1 are pressed against both sides of the XY adjusting plate 3, and the tops of the first adjusting screw S4 and the second adjusting screw S3 are pressed against the top of the microscope imaging device 1; a rotating adjusting plate 4 is arranged at the top of the microscope imaging device 1, a second inclined surface 41 is arranged on the rotating adjusting plate 4, and the second adjusting screw S3 is pressed against the second inclined surface 41;

[0040] Adjust the third adjusting screw S2 and the fourth adjusting screw S1 to adjust the movement of the microscope imaging device 1 in the X-axis direction and the Y-axis direction;

[0041] The first adjusting screw S4 and the second adjusting screw S3 are used to adjust the rotation of the microscope imaging device 1 in the clockwise (CW) and counterclockwise (CCW) directions.

[0042] The above-mentioned arc-shaped portion 11 is respectively arranged on both sides of the bottom of the microscope imaging device 1 , and the third adjusting screw S2 and the fourth adjusting screw S1 are respectively mounted on the arc-shaped portions 11 on both sides of the bottom of the microscope imaging device, and the arc-shaped portions 11 are opposite to the XY adjusting plate 3 .

[0043] The position adjustment bracket 2 is made of metal.

[0044] One side of the XY adjustment plate 3 is an inclined surface 31 , and the tops of the third adjustment screw S2 and the fourth adjustment screw S1 rest on the inclined surface 31 . The other side of the XY adjustment plate 3 is a plane and rests on the support plate 23 of the position adjustment bracket 2 .

[0045] The first adjusting screw S4 and the second adjusting screw S3 are located on both sides of the Y axis and deviate from the center of the microscope imaging device 1 to form a rotational torque.

[0046] like Fig.11 As shown, the above-mentioned mounting plate 21 is used to be mounted on the mounting platform 102 on the frame 100 of the optical fiber fusion splicer, and is fastened to the mounting platform 102 by screws passing through the mounting holes 22 set on the mounting plate 21. The mounting holes 22 are round holes and match the rods of the screws without any vacant positions. The mounting plate 21 cannot move along the X-axis direction and the Y-axis direction.

[0047] Blocks 32 protrude from both ends of the XY adjustment plate 3 , and the blocks 32 are clamped on both sides of the microscope imaging device 1 , which is convenient for installation.

[0048] A rotating adjustment plate 4 is disposed on the top of the microscope imaging device 1 . A second inclined surface 41 is disposed on the rotating adjustment plate 4 . The second adjusting screw S3 abuts against the second inclined surface 41 .

[0049] The working principle of the present invention can be referred to as shown in Table 1. The cooperation of the first adjusting screw S4, the second adjusting screw S3, the third adjusting screw S2 and the fourth adjusting screw S1 realizes movement in the X-axis direction and the Y-axis direction and rotation in the clockwise (CW) and counterclockwise (CCW) directions. The present invention introduces a rotating adjustment plate 4, on which a second inclined surface 41 is provided. The second adjusting screw S3 abuts against the second inclined surface 41, and the tops of the third adjusting screw S2 and the fourth adjusting screw S1 abut against the inclined surface 31. The second adjusting screw S3, the third adjusting screw S2 and the fourth adjusting screw S1 are arranged symmetrically. Reference for the moving direction Figure 6 .

[0050]

[0051] Table 1

[0052] The utility model sets an XY adjustment plate at the bottom of the microscope imaging device, the tops of the third adjustment screw and the fourth adjustment screw are against the two sides of the XY adjustment plate, and the tops of the first adjustment screw and the second adjustment screw are against the top of the microscope imaging device; the third adjustment screw and the fourth adjustment screw are adjusted to adjust the movement of the microscope imaging device in the X-axis direction and the Y-axis direction; the first adjustment screw and the second adjustment screw are used to adjust the rotation of the microscope imaging device in the clockwise and counterclockwise directions, and the adjustment range is large, and the adjustment is regular, the adjustment efficiency is high, and the adjustment accuracy is high. A mounting plate is set on each side of the position adjustment bracket, and a mounting hole is set on the mounting plate. The mounting plate is used to be mounted on the mounting platform on the frame of the optical fiber fusion splicer, and is tightened and fixed on the mounting platform by screws through the mounting holes set on the mounting plate. After installation, since the position adjustment bracket is made of metal, the frame of the optical fiber fusion splicer is also made of metal, the influence of force deformation on the adjustment accuracy is basically solved.

[0053] Since the second inclined plane 41 is set on the rotating adjustment plate 4 and the inclined plane 31 is set on the XY adjustment plate 3, the clever inclined plane design ensures that the microscope imaging device 1 can adjust the position and rotate along the plane without detaching from the position adjustment bracket 2. When the position and rotation are adjusted to meet the requirements, the first adjustment screw S4 can be locked.

[0054] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An imaging system for an optical fiber fusion splicer with a precise position adjustment mechanism, comprising a microscope imaging device (1), characterized in that It also includes a position adjustment bracket (2), a first adjustment screw (S4), a second adjustment screw (S3), a third adjustment screw (S2) and a fourth adjustment screw (S1); a cavity (20) is formed in the middle of the position adjustment bracket (2); the microscope imaging device (1) is mounted in the cavity (20); a mounting plate (21) is provided on each side of the position adjustment bracket (2); a mounting hole (22) is provided on the mounting plate (21); the first adjustment screw (S4) and the second adjustment screw (S3) are installed on the top of the position adjustment bracket (2); the first adjustment screw (S4) and the second adjustment screw (S3) are separated by a distance; the third adjustment screw (S2) and the fourth adjustment screw (S1) are installed on each side of the bottom of the position adjustment bracket (2); an XY adjustment plate (3) is provided at the bottom of the microscope imaging device (1); the tops of the third adjustment screw (S2) and the fourth adjustment screw (S1) are against the two sides of the XY adjustment plate (3); and the tops of the first adjustment screw (S4) and the second adjustment screw (S3) are against the top of the microscope imaging device (1); Adjusting the third adjustment screw (S2) and the fourth adjustment screw (S1) to adjust the movement of the microscope imaging device (1) in the X-axis direction and the Y-axis direction; The first adjusting screw (S4) and the second adjusting screw (S3) are used to adjust the rotation of the microscope imaging device (1) in the clockwise and counterclockwise directions.

2. According to claim 1, the imaging system of an optical fiber fusion splicer with a precise position adjustment mechanism is characterized in that: An arc-shaped portion (11) is provided on both sides of the bottom of the microscope imaging device (1), and a third adjusting screw (S2) and a fourth adjusting screw (S1) are respectively mounted on the arc-shaped portions (11) on both sides of the bottom of the microscope imaging device, and the arc-shaped portions (11) are opposite to the XY adjusting plate (3).

3. According to claim 1, the imaging system of an optical fiber fusion splicer with a precise position adjustment mechanism is characterized in that: The position adjustment bracket (2) is made of metal.

4. The optical fiber fusion splicer imaging system with a precise position adjustment mechanism according to claim 1, 2 or 3, characterized in that: One side of the XY adjustment plate (3) is a sloped surface (31), the tops of the third adjustment screw (S2) and the fourth adjustment screw (S1) are against the slope (31), and the other side of the XY adjustment plate (3) is a plane and rests on the support plate (23) of the position adjustment bracket (2).

5. The optical fiber fusion splicer imaging system with a built-in precise position adjustment mechanism according to claim 4, characterized in that: The first adjusting screw (S4) and the second adjusting screw (S3) are located on both sides of the Y axis.

6. The optical fiber fusion splicer imaging system with a precise position adjustment mechanism according to claim 4, characterized in that: The mounting plate (21) is used to be mounted on a mounting platform (102) on a frame (100) of an optical fiber fusion splicer, and is screwed through mounting holes (22) provided on the mounting plate (21) to be fastened and fixed on the mounting platform (102), wherein the mounting holes (22) are round holes.

7. The optical fiber fusion splicer imaging system with a built-in precise position adjustment mechanism according to claim 1, 2 or 3, characterized in that: Blocks (32) protrude from both ends of the XY adjustment plate (3), and the blocks (32) are clamped on both sides of the microscope imaging device (1).

8. The optical fiber fusion splicer imaging system with a built-in precise position adjustment mechanism according to claim 1, 2 or 3, characterized in that: A rotating adjustment plate (4) is arranged on the top of the microscope imaging device (1), a second inclined surface (41) is arranged on the rotating adjustment plate (4), and a second adjustment screw (S3) abuts against the second inclined surface (41).

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