Laser with uniform light spot intensity

Abstract

The utility model discloses a laser with uniform light spot intensity, particularly relates to the technical field of optical fiber lasers, and comprises a laser body and an optical fiber fixedly connected with the outer wall of the laser body. A threaded rod is arranged in an adjusting groove, a rotating block is arranged on the outer wall of the threaded rod, a rotating plate is arranged on the outer wall of the rotating block, a swing rod is arranged on the outer wall of the rotating plate, a moving plate is arranged at one end of the swing rod, a limiting rod is arranged in the moving plate, a spring is arranged on the outer wall of the limiting rod, and an extrusion rod is arranged at one end of the moving plate. According to the utility model, when the device is used and the tooth-missing fan needs to be installed on the optical fiber, the outside of the optical fiber enters the inside of the installation groove, and the threaded rod is rotated, so that the frictional resistance between the installation block and the optical fiber is increased, and the position of the installation block is convenient to fix; and the problem that when the tooth-missing fan vibrates, the position of the tooth-missing fan moves and deviates too much is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber lasers, in particular to a laser with uniform light spot intensity. Background Art

[0002] Fiber laser refers to a laser that uses rare earth-doped glass fiber as a gain medium. Fiber lasers can be developed based on fiber amplifiers: under the action of pump light, high power density is easily formed in the fiber, causing the laser energy level "particle number inversion" of the laser working material. When a positive feedback loop is properly added (forming a resonant cavity), laser oscillation output can be formed. Fiber lasers have a very wide range of applications, including laser fiber communications, laser space long-distance communications, industrial shipbuilding, automobile manufacturing, laser engraving, laser marking, laser cutting, printing rollers, metal and non-metal drilling / cutting / welding (brass welding, quenching, cladding and deep welding), military defense security, medical equipment and instruments, large-scale infrastructure, as a pump source for other lasers, etc.

[0003] At present, when the fiber lasers on the market are used, it is necessary to set up an optical fiber between the laser and the optical path output device for connection. In actual use, the laser light has different spot densities when it is emitted from the laser outlet. When a large spot test is required, the spot will be amplified. The spot formed after amplification will have uneven power, which will cause data uniformity abnormality. Because the power density distribution of the laser spot is uneven and irregular, it cannot be improved by algorithms. Utility Model Content

[0004] The purpose of the utility model is to provide a laser with uniform light spot intensity to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A laser with uniform spot intensity comprises a laser body and an optical fiber fixedly connected to the outer wall of the laser body, a mounting block is provided on the outer wall of the optical fiber, a mounting groove is provided on the outer wall of the mounting block, an adjustment groove is provided inside the mounting block, a limit rod is fixedly connected inside the adjustment groove, a movable plate is slidably connected to the outer wall of the limit rod, an extrusion rod is fixedly connected to one end of the movable plate, a spring is provided between the outer wall of the movable plate and the adjustment groove, a swing rod is hinged at one end of the movable plate away from the extrusion rod, a rotating plate is hinged at one end of the swing rod away from the extrusion rod, and a toothless fan is provided at the bottom end of the mounting block.

[0007] Furthermore, one end of the extrusion rod passes through the interior of the mounting groove and is slidably connected to the mounting block. The end of the extrusion rod away from the adjustment groove is fixedly connected to an extrusion plate. A rotating block is provided inside the adjustment groove. The outer wall of the rotating block is fixedly connected to one end of the rotating plate. The addition of the extrusion rod allows the extrusion plate to move inside the mounting groove.

[0008] Furthermore, a threaded rod slides inside the rotating block, the top end of the threaded rod penetrates the outer wall of the mounting block and the threaded rod is connected to the mounting block via threads. The addition of the threaded rod allows the rotating block to move inside the adjusting groove.

[0009] Furthermore, the end of the optical fiber away from the laser body is fixedly connected to a light path output device, and the outer wall of the mounting block is provided with a cable tie. The addition of the rotating block enables the threaded rod to drive the rotating plate to move.

[0010] Furthermore, the bottom end of the cable tie is fixedly connected to the toothless fan, the cross-sectional shape of the adjustment groove is set to be an arc shape, and the addition of the rocker arm enables the rotating rod to drive the movable plate to move.

[0011] Furthermore, one end of the spring is fixedly connected to the inside of the adjustment slot, and the other end of the spring is fixedly connected to the outer wall of the movable plate. The addition of the spring allows the movable plate to return to its initial position.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The laser with uniform spot intensity described in the utility model can make it convenient to fix the position of the toothless fan in the device, by arranging a threaded rod inside the adjusting groove, arranging a rotating block on the outer wall of the threaded rod, arranging a rotating plate on the outer wall of the rotating block, arranging a rocker rod on the outer wall of the rotating plate, arranging a movable plate at one end of the rocker rod, arranging a limit rod inside the movable plate, arranging a spring on the outer wall of the limit rod, and arranging an extrusion rod at one end of the movable plate, so that the extrusion rod can drive the extrusion plate to move. In the utility model, when the device is used and it is necessary to install the toothless fan on the optical fiber, the outside of the optical fiber is allowed to enter the inside of the installation groove. At this time, rotating the threaded rod will increase the friction resistance between the installation block and the optical fiber, thereby facilitating the fixing of the installation block, thereby preventing the problem of excessive displacement of the position of the toothless fan due to vibration of the toothless fan.

[0014] 2. The laser with uniform spot intensity described in the utility model can optimize the uniformity of the laser spot power density, by arranging an optical fiber on the outer wall of the laser body, arranging an optical path output device at one end of the optical fiber, arranging a mounting block on the outer wall of the optical fiber, arranging a cable tie on the outer wall of the mounting block, and arranging a toothless fan on the outer wall of the cable tie, so that the toothless fan can drive the optical fiber to vibrate. In the utility model, the fan generates irregular vibrations due to the lack of teeth, causing the optical fiber to vibrate continuously at a high frequency. The vibration will cause the optical fiber to be unable to advance along a fixed route when transmitted inside the optical fiber, and the final output light spot will become a light spot mixed by transmissions from different paths, thereby achieving the optimization of the uniformity of the laser spot power density. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a main cross-sectional view of the mounting block of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the toothless fan of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of the rotating block of the utility model.

[0020] In the figure: 1. Laser body; 2. Optical fiber; 3. Mounting block; 4. Mounting slot; 5. Adjustment slot; 6. Limit rod; 7. Moving plate; 8. Extrusion rod; 9. Spring; 10. Rocker rod; 11. Rotating plate; 12. Toothless fan; 13. Extrusion plate; 14. Rotating block; 15. Threaded rod; 16. Optical path output device; 17. Cable tie. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a laser with uniform spot intensity, and the technical solution is as follows:

[0023] A laser with uniform spot intensity comprises a laser body 1 and an optical fiber 2 fixedly connected to the outer wall of the laser body 1, a mounting block 3 is provided on the outer wall of the optical fiber 2, a mounting groove 4 is provided on the outer wall of the mounting block 3, an adjusting groove 5 is provided inside the mounting block 3, a limiting rod 6 is fixedly connected inside the adjusting groove 5, a moving plate 7 is slidably connected to the outer wall of the limiting rod 6, an extrusion rod 8 is fixedly connected to one end of the moving plate 7, a spring 9 is provided between the outer wall of the moving plate 7 and the adjusting groove 5, a swing rod 10 is hinged at one end of the moving plate 7 away from the extrusion rod 8, a rotating plate 11 is hinged at one end of the swing rod 10 away from the extrusion rod 8, and a toothless fan 12 is provided at the bottom end of the mounting block 3.

[0024] In a preferred embodiment, one end of the extrusion rod 8 passes through the interior of the mounting groove 4 and the extrusion rod 8 is slidably connected to the mounting block 3. The end of the extrusion rod 8 away from the adjusting groove 5 is fixedly connected to the extrusion plate 13. A rotating block 14 is provided inside the adjusting groove 5. The outer wall of the rotating block 14 is fixedly connected to one end of the rotating plate 11. When the extrusion rod 8 moves, the extrusion rod 8 can move inside the adjusting groove 5, and the extrusion rod 8 can also drive the extrusion plate 13 to move.

[0025] In a preferred embodiment, a threaded rod 15 slides inside the rotating block 14, the top of the threaded rod 15 passes through the outer wall of the mounting block 3 and the threaded rod 15 is connected to the mounting block 3 by a thread. When the threaded rod 15 moves, the threaded rod 15 can move inside the adjusting groove 5, and the threaded rod 15 can drive the rotating block 14 to move.

[0026] In a preferred embodiment, the optical fiber 2 is fixedly connected to an optical path output device 16 at one end away from the laser body 1, and a cable tie 17 is provided on the outer wall of the mounting block 3. When the rotating block 14 moves, the rotating block 14 can drive the rotating plate 11 to move, so that the rotating plate 11 moves inside the adjustment slot 5.

[0027] The working principle of the utility model is as follows: when the device is used, the toothless fan 12 needs to be installed on the optical fiber 2, and the outside of the optical fiber 2 is made to enter the inside of the installation groove 4. At this time, the threaded rod 15 is rotated, so that the threaded rod 15 and the installation block 3 move through the thread, so that the threaded rod 15 can rotate inside the adjustment groove 5, and the threaded rod 15 slides with the rotating block 14 at the same time. The lower half of the threaded rod 15 has a square block with a straight cross-section, so that the threaded rod 15 can drive the rotating block 14 to move through the square block, so that the rotating block 14 can rotate slightly inside the adjustment groove 5, and the rotating block 14 can also drive the rotating plate 11 to move, so that the rotating plate 11 can move in a small circular motion inside the adjustment groove 5, and the rotating plate 11 can also drive the swing rod 10 to move, so that the swing rod 10 can swing slightly inside the adjustment groove 5, so that the rotating plate 1 The swing rod 10 can be used to drive the moving plate 7 to move, so that the moving plate 7 slides inside the adjusting groove 5, and the moving plate 7 slides on the outer wall of the limiting rod 6 at the same time. The moving plate 7 will squeeze the spring 9 at the same time, and the moving plate 7 drives the squeezing rod 8 to move, so that the squeezing rod 8 slides inside the adjusting groove 5. The squeezing rod 8 drives the squeezing plate 13 to move, so that the squeezing plate 13 slides inside the mounting groove 4, so that the squeezing plate 13 can squeeze the outside of the optical fiber 2. One side of the outer wall of the squeezing plate 13 is made of rubber. When the outside of the squeezing plate 13 contacts the outside of the optical fiber 2, the friction resistance between the mounting block 3 and the optical fiber 2 is increased, so that the position of the mounting block 3 is convenient to fix, so as to prevent the problem that the position of the toothless fan 12 is too large when the toothless fan 12 vibrates.

[0028] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a technical solution: the bottom end of the cable tie 17 is fixedly connected to the toothless fan 12, and the cross-sectional shape of the adjustment slot 5 is set to be an arc shape. When the rotating plate 11 moves, the rotating plate 11 can drive the swing rod 10 to move, so that the swing rod 10 moves inside the adjustment slot 5.

[0029] In a preferred embodiment, one end of the spring 9 is fixedly connected to the inside of the adjustment slot 5, and the other end of the spring 9 is fixedly connected to the outer wall of the movable plate 7. When the movable plate 7 moves, the movable plate 7 can move on the outer wall of the limiting rod 6, and the movable plate 7 can drive the spring 9 to move.

[0030] The working principle of the utility model: when using the device, by adding an optical fiber 2 transmission path at the front end of the laser body 1, and adding a toothless fan 12 on the optical fiber 2, the fan will produce irregular vibrations due to the lack of teeth, causing the optical fiber 2 to vibrate continuously at a high frequency. The vibration will cause the optical fiber 2 to be unable to move along a fixed route when transmitting inside the optical fiber 2. The final output light spot will become a light spot mixed by transmissions from different paths, thereby realizing the uniformity optimization of the power density of the laser spot. The main use principle involves that the propagation mode of light in the optical fiber 2 is transmitted in the form of reflection. Only a small vibration is needed to change the propagation path of the light, and no additional loss is added. Therefore, the improvement of the mixing of the laser spot energy can be achieved in a very simple and low-cost way.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A laser with uniform spot intensity, comprising a laser body (1) and an optical fiber (2) fixedly connected to the outer wall of the laser body (1), characterized in that: The outer wall of the optical fiber (2) is provided with a mounting block (3), the outer wall of the mounting block (3) is provided with a mounting groove (4), the interior of the mounting block (3) is provided with an adjustment groove (5), the interior of the adjustment groove (5) is fixedly connected with a limit rod (6), the outer wall of the limit rod (6) is slidably connected with a movable plate (7), one end of the movable plate (7) is fixedly connected with an extrusion rod (8), a spring (9) is provided between the outer wall of the movable plate (7) and the adjustment groove (5), the end of the movable plate (7) away from the extrusion rod (8) is hinged with a swing rod (10), the end of the swing rod (10) away from the extrusion rod (8) is hinged with a rotating plate (11), and the bottom end of the mounting block (3) is provided with a toothless fan (12).

2. The laser with uniform spot intensity according to claim 1, characterized in that: One end of the extrusion rod (8) passes through the interior of the mounting groove (4) and the extrusion rod (8) is slidably connected to the mounting block (3); one end of the extrusion rod (8) away from the adjustment groove (5) is fixedly connected to an extrusion plate (13); a rotating block (14) is provided inside the adjustment groove (5); and an outer wall of the rotating block (14) is fixedly connected to one end of the rotating plate (11).

3. The laser with uniform spot intensity according to claim 2, characterized in that: A threaded rod (15) is slidably disposed inside the rotating block (14), the top end of the threaded rod (15) penetrates the outer wall of the mounting block (3), and the threaded rod (15) is connected to the mounting block (3) via threads.

4. The laser with uniform spot intensity according to claim 1, characterized in that: An end of the optical fiber (2) away from the laser body (1) is fixedly connected to an optical path output device (16), and a cable tie (17) is provided on the outer wall of the mounting block (3).

5. The laser with uniform spot intensity according to claim 4, characterized in that: The bottom end of the tie (17) is fixedly connected to the toothless fan (12), and the cross-sectional shape of the adjustment groove (5) is set to be an arc shape.

6. The laser with uniform spot intensity according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the inside of the adjustment groove (5), and the other end of the spring (9) is fixedly connected to the outer wall of the movable plate (7).

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