A laser diode collimation system

Abstract

The present application relates to laser diode installation and adjustment technical field, specifically relates to a kind of laser diode collimation system, comprising: mounting plate, the mounting plate is equipped with driving assembly and sliding assembly;Lens placement platform, be located on sliding assembly, and are connected with driving assembly, the lens placement platform includes bottom plate and clamping mechanism, pressing mechanism, lens is located in clamping mechanism, the clamping mechanism is located in the inside of the pressing mechanism, the clamping mechanism is used to clamp lens;Place pedestal, be located on the mounting plate, and close to the lens placement platform setting, the place pedestal is equipped with proximity detection element, the place pedestal is used to clamp laser diode;Beam quality analyzer, be located on the mounting plate, and correspond lens placement platform setting.Replaces manual adjustment, cost is extremely low, structure is extremely simple, component parts are few, cost is only 1 / 10 of full-automatic equipment even lower, small and medium-sized enterprises can easily popularize.

Description

Technical Field

[0001] This invention relates to the field of laser diode assembly and adjustment technology, and specifically to a laser diode collimation system. Background Technology

[0002] Semiconductor lasers possess a series of advantages, including small size, light weight, high efficiency, long lifespan, and low cost. They have extremely broad application prospects and market value in fields such as materials processing, laser medicine, information communication, photoelectric detection, and lighting displays, making them one of the most widely used and highly industrialized core light sources in the optoelectronic industry today. With the rapid popularization of industrial automation, precision manufacturing, and civilian laser equipment, increasingly higher requirements are being placed on the collimation accuracy, assembly efficiency, system miniaturization, and batch consistency of laser diode-emitted beams.

[0003] Currently, laser diode collimation equipment is divided into two categories: 1. Manual debugging is inefficient, inaccurate, prone to contamination, inconsistent, and cannot be mass-produced.

[0004] 2. Fully automatic collimation equipment has high precision, but it has a complex structure, extremely high cost, and high price, making it difficult for small and medium-sized enterprises to afford, and it is also difficult to maintain. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problems of high accuracy, but complex structure, extremely high cost and expensive price of fully automatic collimation equipment in the prior art, thereby providing a laser diode collimation system.

[0006] To address the aforementioned technical problems, this invention provides a laser diode collimation system, comprising: a mounting plate having a driving assembly and a sliding assembly; a lens placement stage disposed on the sliding assembly and connected to the driving assembly, the lens placement stage including a base plate, a clamping mechanism, and a pressing mechanism, the lens being disposed within the clamping mechanism, the clamping mechanism being located inside the pressing mechanism, the clamping mechanism being used to clamp the lens; a placement base disposed on the mounting plate and positioned close to the lens placement stage, the placement base having a proximity detection element, the placement base being used to clamp the laser diode; and a beam quality analyzer disposed on the mounting plate and positioned corresponding to the lens placement stage.

[0007] Furthermore, the clamping mechanism includes a first clamping member and a second clamping member, the first clamping member and the second clamping member being provided with clamping grooves, and the lens being inserted into the clamping grooves.

[0008] Furthermore, the clamping mechanism includes a first clamping plate and a second clamping plate, a linear guide assembly, and a clamping member. The linear guide assembly is disposed between the first clamping plate and the second clamping plate. The clamping mechanism is located in the middle of the first clamping plate and the second clamping plate. The clamping member is disposed on the first clamping plate and is used to clamp the clamping mechanism.

[0009] Furthermore, the linear guide includes multiple support rods, springs, optical shafts, and linear bearings. The multiple support rods are symmetrically arranged between the first pressing plate and the second pressing plate. The springs are sleeved on the support rods, and the linear bearings are sleeved on the optical shafts and located at both ends of the first pressing plate and the second pressing plate.

[0010] Furthermore, the placement base is provided with a fixing frame, and the laser diode is disposed on the fixing frame.

[0011] Furthermore, the drive assembly includes a stepper motor, a coupling, and a transmission rod. The stepper motor is mounted on a mounting plate. One end of the coupling is connected to the output shaft of the stepper motor, and the other end is connected to the transmission rod. The transmission rod is connected to the bottom of the lens placement stage.

[0012] Furthermore, the drive assembly also includes a side wing plate and a motor flange, with the stepper motor disposed inside the motor flange and mounted on the mounting plate via the side wing plate.

[0013] Furthermore, the sliding assembly includes a linear guide rail and a slider, the linear guide rail is disposed on the mounting plate, the slider is disposed on the linear guide rail, and the lens placement stage is connected to the slider.

[0014] Furthermore, it also includes a controller connected to the stepper motor and the beam quality analyzer.

[0015] Furthermore, the proximity detection element is a proximity switch.

[0016] The technical solution of this invention has the following advantages: 1. The laser diode collimation system provided by this invention replaces manual adjustment, resulting in extremely low cost, a simple structure, and fewer components. Its cost is only 1 / 10 or even less of fully automatic equipment, making it easily accessible to small and medium-sized enterprises. It is fast, requiring only 10 seconds to adjust a single laser diode, far faster than manual adjustment, meeting the needs of mass production. It has excellent divergence angle compression, steadily compressing the laser diode's divergence angle from 40° to near 0°, achieving collimation results close to fully automatic equipment. It boasts high coaxiality, with a mechanical structure forcing coaxiality and an error ≤0.02mm, avoiding manual eccentricity. It is less prone to contamination and has a high yield rate, as there is no manual contact with the lens and LD, significantly reducing the defect rate. Operation is simple, requiring no skilled workers; even beginners can operate it, and its consistency is far superior to manual operation. Its compact structure and easy maintenance, without complex systems, result in a low failure rate and almost zero maintenance costs, achieving near-fully automatic divergence angle compression and beam collimation effects with extremely low hardware costs. The summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed description below. The summary section is not intended to identify essential or necessary features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the laser diode collimation system provided by the present invention; Figure 2 A schematic diagram of the lens placement stage of the laser diode collimation system provided by the present invention; Figure 3 A schematic diagram of the clamping mechanism of the laser diode collimation system provided by the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Mounting plate; 2. Lens placement stage; 3. Base plate; 4. Clamping mechanism; 5. Pressing mechanism; 6. Placement base; 7. Proximity detection element; 8. Beam quality analyzer; 9. First clamping component; 10. Second clamping component; 11. Clamping groove; 12. First pressing plate; 13. Second pressing plate; 14. Linear guide assembly; 15. Pressing component; 16. Support rod; 17. Spring; 18. Optical axis; 19. Linear bearing; 20. Fixing frame; 21. Stepper motor; 22. Coupling; 23. Transmission rod; 24. Side wing plate; 25. Motor flange; 26. Linear guide rail; 27. Slider; 28. Controller; 29. ​​Base. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0021] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0022] Please see Figures 1 to 3 As shown, the present invention provides a laser diode collimation system, comprising: a mounting plate 1, on which a driving component and a sliding component are provided; a lens placement stage 2, disposed on the sliding component and connected to the driving component, the lens placement stage 2 including a base plate 3, a clamping mechanism 4, and a pressing mechanism 5, the lens being disposed within the clamping mechanism 4, the clamping mechanism 4 being disposed inside the pressing mechanism 5, the clamping mechanism 4 being used to clamp the lens; a placement base 6, disposed on the mounting plate 1 and disposed close to the lens placement stage 2, the placement base 6 being provided with a proximity detection element 7, the placement base 6 being used to clamp the laser diode; and a beam quality analyzer 8, disposed on the mounting plate 1 and disposed corresponding to the lens placement stage 2.

[0023] By placing the drive assembly, sliding assembly, lens stage 2, placement base 6, and beam quality analyzer 8 on the mounting plate 1, the mounting plate 1 provides mounting positions for the drive assembly, sliding assembly, lens stage 2, placement base 6, and beam quality analyzer 8, while also ensuring the stability of their operation. The lens stage 2 is mounted on the sliding assembly, and the drive assembly is connected to it. This allows the drive assembly to move the lens stage 2 on the sliding assembly, thereby adjusting the position of the lens stage 2 relative to the placement base 6.

[0024] The lens placement stage 2 uses a clamping mechanism 4 to clamp the lens, thereby ensuring the installation stability of the lens. Then, a pressing mechanism 5 is used to press the lens to ensure that the lens and the laser diode maintain a high-precision coaxial posture.

[0025] Adjust the beam quality analyzer 8 to the optimal beam spot receiving position, energize the laser diode to emit light, and drive the lens placement stage 2 to move on the sliding component, so that the entire lens placement stage 2 makes a high-precision linear feed motion along the sliding component towards the placement base 6.

[0026] During the motion, the beam quality analyzer 8 collects optical parameters such as beam pattern, divergence angle, and uniformity in real time, completes intelligent detection and digital analysis, and feeds back the beam quality signal to the controller 28 in real time, forming an optical-mechanical-electrical intelligent closed-loop adjustment.

[0027] Simultaneously, the proximity detection element 7 monitors the position of the lens placement stage 2 in real time, achieving intelligent travel limit and safety protection. The controller 28 performs real-time judgment and intelligent optimization of the light spot quality data, automatically controls the displacement, speed, and start / stop of the drive component, and continuously fine-tunes the relative distance between the lens and the laser diode until the system intelligently determines that the light spot meets the collimation qualification standard, automatically stops the movement, and completes the entire collimation adjustment process.

[0028] In some optional embodiments, the clamping mechanism 4 includes a first clamping member 9 and a second clamping member 10, wherein the first clamping member 9 and the second clamping member 10 are provided with clamping grooves 11, and the lens is inserted into the clamping grooves 11.

[0029] The clamping groove 11 facilitates the insertion of the lens into the clamping groove 11, thereby fixing the lens and ensuring the stability of the lens installation.

[0030] Specifically, the clamping mechanism 5 includes a first clamping plate 12 and a second clamping plate 13, a linear guide assembly 14, and a clamping member 15. The linear guide assembly 14 is disposed between the first clamping plate 12 and the second clamping plate 13. The clamping mechanism 4 is located in the middle of the first clamping plate 12 and the second clamping plate 13. The clamping member 15 is disposed on the first clamping plate 12 and is used to clamp the clamping mechanism 4.

[0031] The clamping member 15 clamps the first clamping plate 12 and uses the linear guide assembly 14 to guide the whole, so that the force applied by the clamping member 15 is directly applied to the first clamping plate 12, and then applied to the first clamping plate 12, that is, applied to the clamping mechanism 4, ensuring that the lens is fixedly clamped in the first clamping plate and the second clamping plate.

[0032] The linear guide includes multiple support rods 16, springs 17, optical axes 18, and linear bearings 19. The multiple support rods 16 are symmetrically arranged between the first pressing plate 12 and the second pressing plate 13. The springs 17 are sleeved on the support rods 16, and the linear bearings 19 are sleeved on the optical axes 18 and located at both ends of the first pressing plate 12 and the second pressing plate 13.

[0033] By sleeved spring 17 on support rod 16, when clamping member 15 is pressed on first clamping plate 12, first clamping plate 12, guided by linear bearing 19 and optical axis 18, presses spring 17 along the circumferential direction of support rod 16, thereby clamping clamping mechanism 4, and then clamping lens.

[0034] The spring is a carbon steel spring with a wire diameter of 1.2 mm and an outer diameter of 9 mm. It provides clamping force for the clamping mechanism 5. The spring is mounted on the support rod 16 and is compressed by the optical axis 18, which provides a counterforce during the clamping of the lens.

[0035] Linear bearing 19 is an internal ball flanged linear bearing. Because the coefficient of rolling friction is much smaller than that of sliding friction, ball linear bearings are selected. Ball linear bearings provide a good surface friction coefficient for the sliding of the optical shaft, making it smooth.

[0036] Specifically, the placement base 6 is provided with a fixing frame 20, and the laser diode is placed on the fixing frame 20, that is, the fixing frame 20 provides a fixed support for the laser diode.

[0037] In some alternative embodiments, the drive assembly includes a stepper motor 21, a coupling 22, and a transmission rod 23. The stepper motor 21 is mounted on the mounting plate 1. One end of the coupling 22 is connected to the output shaft of the stepper motor 21, and the other end is connected to the transmission rod 23. The transmission rod 23 is connected to the bottom of the lens placement stage 2.

[0038] The stepper motor has a step angle of 1.8°, a torque of 2.3 N / m, and a length of 75 mm. The stepper motor provides linear guiding force, providing the initial force for the linear movement of the sliding component.

[0039] The coupling has an inner diameter of 8 mm and an outer diameter of 32 mm. It is a diaphragm coupling that provides protection and flexible transmission for the power transmission of the stepper motor.

[0040] Meanwhile, the drive assembly also includes a side wing plate 24 and a motor flange 25. The stepper motor 21 is located inside the motor flange 25 and is mounted on the mounting plate 1 via the side wing plate 24. That is, the stepper motor 21 is first fixed using the motor flange 25, then the motor flange 25 is mounted on the side wing plate 24, and then the side wing plate 24 is fixed on the mounting plate 1.

[0041] Specifically, the sliding assembly includes a linear guide rail 26 and a slider 27. The linear guide rail 26 is mounted on the mounting plate 1, and the slider 27 is mounted on the linear guide rail 26. The lens placement stage 2 is connected to the slider 27. By connecting the lens placement stage 2 to the slider 27, when the stepper motor 21 is working, the transmission rod 23 can drive the lens placement stage 2 to move along the length of the linear guide rail 26, thereby moving it away from or closer to the laser diode.

[0042] The laser diode collimation system also includes a controller 28, which is connected to a stepper motor 21 and a beam quality analyzer 8. The beam quality analyzer 8 acquires optical parameters such as beam pattern, divergence angle, and uniformity in real time, performs intelligent detection and digital analysis, and feeds back the beam quality signal to the controller 28 in real time, forming an opto-mechanical-electronic intelligent closed-loop adjustment.

[0043] The beam quality analyzer is 80 mm long, 60 mm wide, and 35 mm thick. It helps the stepper motor to determine whether the light spot is qualified and whether to continue moving.

[0044] The controller is 60 mm long, 50 mm wide, and 40 mm thick. It consists of a control board, a housing, and buttons, and provides start signals, end signals, and emergency stop functions for the collimation system.

[0045] The beam quality analyzer 8 has a base 29 at its bottom for fixing the beam quality analyzer 8. The base 29 is mounted on the mounting plate 1.

[0046] In this embodiment, the proximity detection element 7 is a proximity switch. The proximity switch has an external thread of M12×1, a length of 47 mm, and a proximity sensing range of 0.03 mm to 3 mm, providing a limiting function for the travel of the stepper motor.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A laser diode collimation system, characterized in that, include: Mounting plate (1), wherein a driving assembly and a sliding assembly are provided on the mounting plate (1); The lens placement stage (2) is located on the sliding assembly and connected to the driving assembly. The lens placement stage (2) includes a base plate (3), a clamping mechanism (4), and a pressing mechanism (5). The lens is placed inside the clamping mechanism (4). The clamping mechanism (4) is located inside the pressing mechanism (5). The clamping mechanism (4) is used to clamp the lens. A placement base (6) is provided on the mounting plate (1) and is located close to the lens placement stage (2). The placement base (6) is provided with a proximity detection element (7). The placement base (6) is used to hold the laser diode. A beam quality analyzer (8) is mounted on the mounting plate (1) and is set on the lens placement stage (2).

2. The laser diode collimation system according to claim 1, characterized in that, The clamping mechanism (4) includes a first clamping member (9) and a second clamping member (10). The first clamping member (9) and the second clamping member (10) are provided with clamping grooves (11), and the lens is inserted into the clamping grooves (11).

3. A laser diode collimation system according to claim 2, characterized in that, The clamping mechanism (5) includes a first clamping plate (12) and a second clamping plate (13), a linear guide assembly (14), and a clamping member (15). The linear guide assembly (14) is located between the first clamping plate (12) and the second clamping plate (13). The clamping mechanism (4) is located in the middle of the first clamping plate (12) and the second clamping plate (13). The clamping member (15) is located on the first clamping plate (12) and is used to clamp the clamping mechanism (4).

4. A laser diode collimation system according to claim 3, characterized in that, The linear guide includes multiple support rods (16), springs (17), optical shafts (18), and linear bearings (19). The multiple support rods (16) are symmetrically arranged between the first pressing plate (12) and the second pressing plate (13). The springs (17) are sleeved on the support rods (16), and the linear bearings (19) are sleeved on the optical shafts (18) and located at both ends of the first pressing plate (12) and the second pressing plate (13).

5. A laser diode collimation system according to any one of claims 1-4, characterized in that, The placement base (6) is provided with a fixing frame (20), and the laser diode is disposed on the fixing frame (20).

6. A laser diode collimation system according to claim 5, characterized in that, The drive assembly includes a stepper motor (21), a coupling (22), and a transmission rod (23). The stepper motor (21) is mounted on the mounting plate (1). One end of the coupling (22) is connected to the output shaft of the stepper motor (21), and the other end is connected to the transmission rod (23). The transmission rod (23) is connected to the bottom of the lens placement stage (2).

7. A laser diode collimation system according to claim 6, characterized in that, The drive assembly also includes a side wing plate (24) and a motor flange (25). The stepper motor (21) is located inside the motor flange (25) and is mounted on the mounting plate (1) via the side wing plate (24).

8. A laser diode collimation system according to claim 1, characterized in that, The sliding assembly includes a linear guide rail (26) and a slider (27). The linear guide rail (26) is mounted on the mounting plate (1), and the slider (27) is mounted on the linear guide rail (26). The lens placement stage (2) is connected to the slider (27).

9. A laser diode collimation system according to claim 2, characterized in that, It also includes a controller (28) which is connected to a stepper motor (21) and a beam quality analyzer (8).

10. A laser diode collimation system according to claim 1, characterized in that, The proximity detection element (7) is a proximity switch.

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