Novel acousto-optic modulator using visible light for positioning

Abstract

The utility model discloses a novel acousto-optic modulator using visible light for positioning, which comprises a mounting bottom plate, a mounting hole is arranged at the bottom end of the mounting bottom plate, and a first slide rail is arranged in the mounting bottom plate; the novel acousto-optic modulator using visible light for positioning is provided with a first damper and a first spring, a heat dissipation box is pushed through external force, a protection box and fixing frames can be driven to move, and therefore the acousto-optic modulator module can be rapidly disassembled, and on the contrary, through the clamping structure of the two fixing frames, the heat dissipation box is conveniently disassembled. The acousto-optic modulator module can be clamped and fixed, the fixing frame can automatically restore to the original position after losing acting force through the arrangement of the first damper and the first spring, the acousto-optic modulator module is clamped and fixed, and therefore the acousto-optic modulator module can be rapidly disassembled and assembled; and subsequent inconvenience in disassembly and assembly due to the fact that most of the acousto-optic modulators are directly fixed through threaded bolts is avoided.

Description

Technical Field

[0001] This utility model relates to the field of acousto-optic modulator technology, and in particular to a novel acousto-optic modulator that utilizes visible light for positioning. Background Technology

[0002] With the continuous development of laser marking technology, the requirements for product marking quality are increasing. As an important passive device in pulsed fiber lasers, acousto-optic modulators are being used more and more widely. In the traditional laser marking process, a red light source is often installed inside the laser marking machine, and a reflector is set inside the laser head for positioning before marking.

[0003] Most commercially available acousto-optic modulators are fixed directly with threaded bolts, making subsequent disassembly and assembly inconvenient. Therefore, a new type of acousto-optic modulator that uses visible light for positioning is needed. Utility Model Content

[0004] The purpose of this invention is to provide a novel acoustic-optic modulator that uses visible light for positioning, which solves the problem that most existing acoustic-optic modulators are directly fixed by threaded bolts, making subsequent disassembly and assembly inconvenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel acoustic-optic modulator using visible light positioning, comprising a mounting base plate, a mounting hole at the bottom end of the mounting base plate, a first slide rail inside the mounting base plate, a first slider on the inner side of the first slide rail, a brake plate fixed to the side wall of the first slider, a first damper on one side of the brake plate, a first spring around the first damper, a heat dissipation box fixed above the brake plate, a protective box fixed to one end of the heat dissipation box, a fixing frame fixed to the inner wall of the protective box, and an acoustic-optic modulator module on the inner side of the fixing frame.

[0006] Preferably, a drive motor is fixed to the inner wall of the protective box, a cooling fan blade is provided at the rotating end of the drive motor, a sound-diffusing frame is provided on one side of the cooling fan blade, a second damper is provided on the other side of the sound-diffusing frame, a second spring is provided around the second damper, a fixing plate is provided at the other end of the second spring, a second slider is fixed to the other side wall of the sound-diffusing frame, a second slide rail is provided on the outer side of the second slider, sound-absorbing cotton is provided on the outer side of the fixing plate, sound-diffusing holes are opened on the inner wall of the sound-absorbing cotton, and a ventilation window is provided at the outer end of the heat dissipation box.

[0007] Preferably, the brake plate forms a sliding structure with the first slider and the first slide rail, and the brake plate forms an elastic structure with the mounting base plate with the first damper and the first spring, and the heat dissipation box forms a fixed structure with the brake plate.

[0008] Preferably, the heat dissipation box and the protective box form a fixed structure, and the protective box and the acousto-optic modulator module form a locking structure through a fixing frame.

[0009] Preferably, the cooling fan blades are configured to rotate by the operation of a drive motor.

[0010] Preferably, the sound-diffusing frame forms an elastic structure with the fixed plate through the second damper and the second spring, and the fixed plate forms a fixed structure with the heat sink box. The sound-diffusing frame forms a sliding structure with the second slider and the second slide rail, and the outer wall of the sound-absorbing cotton is tightly fitted with the inner wall of the heat sink box.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This novel acoustic-optic modulator using visible light positioning is equipped with a first damper and a first spring. By pushing the heat dissipation box with external force, the protective box and the fixing frame can be moved, thereby enabling quick disassembly of the acoustic-optic modulator module. Conversely, the acoustic-optic modulator module can be locked in place by the locking structure of the two sets of fixing frames. The first damper and the first spring ensure that the fixing frame will automatically return to its original position after the force is lost, locking in place the acoustic-optic modulator module. This allows for quick assembly and disassembly of the acoustic-optic modulator module, avoiding the inconvenience of subsequent assembly and disassembly caused by the direct fixing of most acoustic-optic modulators with threaded bolts.

[0013] 2. This novel acousto-optic modulator using visible light positioning is equipped with cooling fan blades. By turning on the drive motor, the cooling fan blades can be rotated, thereby accelerating the airflow and dissipating heat from the acousto-optic modulator module. This effectively reduces the operating temperature of the acousto-optic crystal and minimizes the impact of temperature changes on the refractive index, thus improving the modulator's performance stability and service life. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a novel acousto-optic modulator using visible light for positioning, as proposed in this utility model.

[0015] Figure 2 This is a cross-sectional view of the heat sink structure of a novel acousto-optic modulator using visible light positioning proposed in this utility model.

[0016] Figure 3 This is a cross-sectional view of the protective box structure of a novel acousto-optic modulator using visible light positioning proposed in this utility model.

[0017] Figure 4 This is a cross-sectional view of the mounting base of a novel acoustic-optic modulator that utilizes visible light for positioning, as proposed in this utility model.

[0018] In the diagram: 1. Mounting base plate; 2. Mounting hole; 3. First slide rail; 4. First slider; 5. Brake plate; 6. First damper; 7. First spring; 8. Heat sink; 9. Protective box; 10. Fixing frame; 11. Sound and light modulator module; 12. Drive motor; 13. Cooling fan blade; 14. Sound diffusion frame; 15. Second damper; 16. Second spring; 17. Fixing plate; 18. Second slider; 19. Second slide rail; 20. Sound-absorbing cotton; 21. Sound diffusion hole; 22. Ventilation window. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, a novel acousto-optic modulator utilizing visible light for positioning includes a mounting base plate 1. The mounting base plate 1 has a mounting hole 2 at its bottom end. A first slide rail 3 is provided inside the mounting base plate 1. A first slider 4 is disposed on the inner side of the first slide rail 3. A brake plate 5 is fixed to the side wall of the first slider 4. A first damper 6 is disposed on one side of the brake plate 5. A first spring 7 is disposed around the first damper 6. A heat sink 8 is fixed above the brake plate 5. A protective box 9 is fixed to one end of the heat sink 8. A mounting bracket 10 is fixed to the inner wall of the protective box 9. An acousto-optic modulator module 11 is disposed inside the mounting bracket 10. The acousto-optic modulator module 11 includes an acousto-optic crystal. When the driving source is turned on, the acousto-optic crystal generates ultrasonic waves under the action of a high-frequency electrical signal generated by the driving source in response to the diffracted light. According to the principle of acousto-optic effect, the propagation of ultrasound in the acousto-optic crystal causes elastic strain in the crystal, which in turn leads to periodic changes in the crystal's refractive index, forming a structure similar to a phase grating. When diffracted light passes through this grating structure, Bragg diffraction occurs. The propagation direction, frequency, and other characteristics of the light change according to the parameters of the driving source, thereby modulating the diffracted light to meet the requirements of laser marking. After passing through the acousto-optic crystal, visible light is coupled into the third collimator, which collimates the visible light again before transmitting it to the output pigtail. Finally, the visible light spot is output from the output pigtail onto the surface of the product to be marked. The operator can observe the spot with the naked eye and conveniently and quickly adjust the product and laser head to the required relative spatial position, completing the positioning work before marking.

[0022] The brake plate 5 forms a sliding structure with the first slider 4 and the first slide rail 3, and the brake plate 5 forms an elastic structure with the mounting base plate 1 through the first damper 6 and the first spring 7. The heat sink 8 forms a fixed structure with the brake plate 5. By pushing the heat sink 8 with external force, the protective box 9 and the fixing frame 10 can be moved, so that the sound and light modulator module 11 can be quickly disassembled. Conversely, the sound and light modulator module 11 can be locked and fixed by the locking structure of the two sets of fixing frames 10. The setting of the first damper 6 and the first spring 7 can make the fixing frame 10 automatically return to its original position after the force is lost, locking and fixing the sound and light modulator module 11, so that the sound and light modulator module 11 can be quickly disassembled and assembled.

[0023] The heat dissipation box 8 and the protective box 9 form a fixed structure, and the protective box 9 forms a locking structure with the acoustic-optical modulator module 11 through the fixing frame 10.

[0024] Example 2

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment further illustrates Example 1. A drive motor 12 is fixed to the inner wall of the protective box 9. A cooling fan blade 13 is provided at the rotating end of the drive motor 12. A sound-diffusing frame 14 is provided on one side of the cooling fan blade 13. A second damper 15 is provided on the other side of the sound-diffusing frame 14. A second spring 16 is provided around the second damper 15. A fixing plate 17 is provided at the other end of the second spring 16. A second slider 18 is fixed to the other side wall of the sound-diffusing frame 14. A second slide rail 19 is provided on the outer side of the second slider 18. Sound-absorbing cotton 20 is provided on the outer side of the fixing plate 17. Sound-diffusing holes 21 are opened on the inner wall of the sound-absorbing cotton 20. A ventilation window 22 is provided at the outer end of the heat dissipation box 8.

[0026] The cooling fan blades 13 form a rotating structure through the operation of the drive motor 12. When the drive motor 12 is turned on, the cooling fan blades 13 can be rotated, thereby accelerating the air circulation and heat dissipating the acousto-optic modulator module 11. This effectively reduces the operating temperature of the acousto-optic crystal and reduces the impact of temperature changes on the refractive index, thereby improving the performance stability and service life of the modulator.

[0027] The sound-diffusing frame 14 forms an elastic structure with the fixed plate 17 via the second damper 15 and the second spring 16, and the fixed plate 17 forms a fixed structure with the heat sink 8. The sound-diffusing frame 14 forms a sliding structure with the second slider 18 and the second slide rail 19. The outer wall of the sound-absorbing cotton 20 is tightly attached to the inner wall of the heat sink 8. During operation, the drive motor 12 generates significant noise, which is propagated in the form of sound waves. The sound-diffusing frame 14 alters the noise propagation without affecting ventilation, thus dispersing the noise. Furthermore, the second damper 15 and the second spring 16 dampen and reduce the noise from air collisions. After the noise is dispersed and reduced by the sound-diffusing frame 14, it passes through the sound-absorbing cotton 20 and the sound-diffusing holes 21. The sound-absorbing cotton 20 reduces the noise generated by the air colliding with the heat sink 8 during airflow. Since the noise is propagated in the form of sound waves, the sound-diffusing holes 21 absorb and reduce the generated noise, thereby achieving a noise reduction effect.

[0028] Working principle: First, the operator needs to push the heat dissipation box 8 with external force, which can move the protective box 9 and the fixing frame 10, thereby allowing for quick disassembly of the acousto-optic modulator module 11. Conversely, the two sets of fixing frames 10 can be locked together by their locking structure. The first damper 6 and the first spring 7 ensure that the fixing frame 10 will automatically return to its original position after the force is released, locking the acousto-optic modulator module 11 in place. This allows for quick assembly and disassembly of the acousto-optic modulator module 11. By turning on the drive motor 12, the cooling fan blades 13 can be rotated, thereby accelerating air circulation and dissipating heat from the acousto-optic modulator module 11. This effectively reduces the operating temperature of the acousto-optic crystal and minimizes the impact of temperature changes on the refractive index, thus improving the performance stability and service life of the modulator.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel acousto-optic modulator utilizing visible light for positioning, comprising a mounting base plate (1), characterized in that: The mounting base plate (1) has a mounting hole (2) at its bottom end. The mounting base plate (1) has a first slide rail (3) inside. The first slide rail (3) has a first slider (4) on its inner side. The side wall of the first slider (4) is fixed with a brake plate (5). The brake plate (5) has a first damper (6) on one side. The first damper (6) has a first spring (7) on its outer periphery. The brake plate (5) has a heat sink (8) fixed above it. The heat sink (8) has a protective box (9) fixed at one end. The protective box (9) has a fixing frame (10) fixed on its inner wall. The fixing frame (10) has an audio-visual modulator module (11) on its inner side.

2. A novel acousto-optic modulator for visible light positioning according to claim 1, characterized in that: The inner wall of the protective box (9) is fixed with a drive motor (12). The rotating end of the drive motor (12) is provided with a cooling fan blade (13). A sound-diffusing frame (14) is provided on one side of the cooling fan blade (13). A second damper (15) is provided on the other side of the sound-diffusing frame (14). A second spring (16) is provided around the second damper (15). A fixing plate (17) is provided at the other end of the second spring (16). A second slider (18) is fixed on the other side wall of the sound-diffusing frame (14). A second slide rail (19) is provided on the outer side of the second slider (18). Sound-absorbing cotton (20) is provided on the outer side of the fixing plate (17). A sound-diffusing hole (21) is opened on the inner wall of the sound-absorbing cotton (20). A ventilation window (22) is provided at the outer end of the heat dissipation box (8).

3. A novel acousto-optic modulator for visible light positioning according to claim 1, characterized in that: The brake plate (5) forms a sliding structure with the first slide rail (3) via the first slider (4), and the brake plate (5) forms an elastic structure with the mounting base plate (1) via the first damper (6) and the first spring (7), and the heat sink (8) forms a fixed structure with the brake plate (5).

4. A novel acousto-optic modulator for visible light positioning according to claim 1, characterized in that: The heat dissipation box (8) and the protective box (9) form a fixed structure, and the protective box (9) and the acoustic-optical modulator module (11) form a locking structure through the fixing frame (10).

5. A novel acousto-optic modulator for visible light positioning according to claim 2, characterized in that: The cooling fan blades (13) form a rotating structure through the operation of the drive motor (12).

6. A novel acousto-optic modulator for visible light positioning according to claim 2, characterized in that: The sound-diffusing frame (14) forms an elastic structure with the fixed plate (17) through the second damper (15) and the second spring (16), and the fixed plate (17) forms a fixed structure with the heat sink (8). The sound-diffusing frame (14) forms a sliding structure with the second slide rail (19) through the second slider (18), and the outer wall of the sound-absorbing cotton (20) is tightly attached to the inner wall of the heat sink (8).

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