Dual camera galvanometer system

Abstract

This utility model relates to a dual-camera galvanometer system, comprising a laser incident frame, a galvanometer module, two cameras, and light-transfer boxes one and two. The laser incident frame connects light-transfer box one to the laser emitting device. The two light-transfer boxes are respectively mounted on the inlet and outlet sides of the galvanometer module, with the bottom of box two serving as the laser outlet. Reflecting mirrors one and two are respectively installed inside light-transfer boxes one and two, which are transparent reflectors with different transmission wavelengths. The laser light can pass through mirror one, and after passing through the galvanometer module, is reflected by mirror two to the workpiece. Visible light partially passes through mirror two and enters the wide-angle camera, while some is reflected by mirror two, the galvanometer module, and mirror one to enter the high-magnification camera. The system achieves rapid and accurate workpiece positioning and real-time engraving feedback through the cooperation of the dual cameras; it utilizes the wavelength selectivity of the mirrors to achieve coaxial multiplexing of the laser and visual light paths, simplifying the structure and ensuring consistency between imaging and processing positions; the ring light is available in various models to adapt to workpieces of different materials for supplementary lighting, improving image quality.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving machine technology, specifically to a dual-camera galvanometer system. Background Technology

[0002] The galvanometer system of a laser engraving machine is a core component that determines the engraving precision, speed, and applicable scenarios. Essentially, it controls the path of the laser beam through a high-speed deflecting mirror (galvanometer) to achieve precise "engraving" of the material. It replaces traditional mechanical motion-based engraving (such as lead screw drives), significantly improving engraving efficiency, and is especially suitable for fine patterns and small-area, high-speed engraving scenarios (such as electronic components, jewelry, and glass carvings).

[0003] Traditional laser processing equipment often uses a single vision camera for positioning and monitoring. While a wide-angle camera can cover a large workpiece's field of view, its low resolution makes it unable to capture details during processing. A high-magnification camera, while capable of capturing details, has a narrow field of view, making it inconvenient for positioning larger workpieces. In existing galvanometer systems with vision capabilities, the laser transmission optical path and the vision imaging optical path are often independently designed, lacking physical coaxiality. This structure leads to an inherent deviation between the "image coordinates" captured by the vision system and the "mechanical coordinates" of laser processing. Coordinate calibration requires complex algorithms, and the calibration results are easily affected by equipment vibration and temperature changes. Furthermore, such galvanometer systems are highly complex and bulky. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical problems and provide a dual-camera galvanometer system.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a dual-camera galvanometer system, including a laser incident frame, a galvanometer module, and cameras, and further including a first light-deflecting box and a second light-deflecting box. The laser incident frame is located at the inlet of the first light-deflecting box and is used to connect the first light-deflecting box and the laser emitting device. The inlet and outlet of the galvanometer module are located on adjacent side walls. The first light-deflecting box is connected to the inlet side of the galvanometer module, and the second light-deflecting box is installed on the outlet side of the galvanometer module. The outlet of the second light-deflecting box is located at its bottom and serves as the laser outlet. Two cameras are provided: a wide-angle camera and a high-magnification camera. The wide-angle camera is fixedly installed in the first light-deflecting box. At the top, a high-magnification camera is fixedly installed on the rear side of the light-transfer box 2. The light-transfer box 1 and the light-transfer box 2 are respectively equipped with a reflecting mirror 1 and a reflecting mirror 2. The angle between the reflecting mirror 1 and the YZ plane in the engraving machine coordinate system is 45°, and the angle between the reflecting mirror 2 and the XY plane in the engraving machine coordinate system is 45°. Both the reflecting mirror 1 and the reflecting mirror 2 are light-transmitting reflecting mirrors, and the wavelengths of light they can transmit are different. Laser light can pass through the reflecting mirror 1, and after passing through the galvanometer module, it can be reflected by the reflecting mirror 2 to the workpiece. Visible light can partially pass through the reflecting mirror 2 to enter the wide-angle camera, and partially be reflected by the reflecting mirror 2, and after passing through the galvanometer module, it can be reflected by the reflecting mirror 1 to the high-magnification camera.

[0006] Furthermore, both the first and second light-transformation boxes are equipped with lens frames, which are adjustable lens frames.

[0007] Furthermore, the lens frame includes an L-shaped frame and a mirror frame. Reflecting lens one and reflecting lens two are respectively fixedly installed on the corresponding mirror frames. The L-shaped frame is fixedly installed inside the light-transforming box one or the light-transforming box two. The horizontal and vertical parts of the L-shaped frame are provided with tension springs. The two ends of the tension springs are respectively installed and connected to the L-shaped frame and the mirror frame. The corners and both ends of the L-shaped frame are provided with threaded holes, and the inside is equipped with a clamping bolt. The clamping bolt is in contact with the mirror frame.

[0008] Furthermore, a field lens is provided between the galvanometer module and the second light-transfer box, with both ends of the field lens installed and connected to the outlet of the galvanometer module and the inlet of the second light-transfer box.

[0009] Furthermore, a connecting frame is provided between the light beam deflection box and the galvanometer module. The connecting frame has through holes and is aligned with the outlet of the light beam deflection box and the inlet of the galvanometer module.

[0010] Furthermore, the bottom of the second light-deflecting box is equipped with a ring light, which is coaxial with the laser outlet. The ring light is available in different models and is detachably connected to the second light-deflecting box.

[0011] Furthermore, a light-transmitting protective lens is installed at the bottom of the ring light.

[0012] The beneficial effects of this utility model are as follows: By combining a wide-angle camera and a high-magnification camera, this utility model can achieve rapid and accurate positioning of the workpiece and real-time feedback of the engraving process, which solves the problems of low efficiency and large error in traditional manual positioning. Moreover, the operator can accurately control the processing status without observing the workpiece at close range. The wide-angle camera is located directly above the workpiece, and the shooting angle is maximized through the light transmission path of the second reflective lens.

[0013] This invention utilizes the wavelength selectivity of reflective lens one and reflective lens two to achieve coaxial multiplexing of the laser processing optical path and the dual-camera visual optical path. The laser and visible light share the core optical path, which avoids the complex structure of the device caused by independent design of multiple optical paths and ensures the spatial consistency of visual imaging and laser processing.

[0014] This utility model features a ring light coaxially designed with the laser outlet and supports detachment and replacement. It can flexibly supplement light for workpieces of different materials (such as highly reflective metals and dark plastics) to improve visual imaging quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is a schematic diagram of the internal structure of a light-transforming box; Figure 4 This is a schematic diagram of the internal structure of the light deflection box II; Figure 5 This is a schematic diagram of the lens frame.

[0016] 1. Laser incident frame; 2. Galvanometer module; 3. Ray deflector box one; 4. Ray deflector box two; 5. Wide-angle camera; 6. High-magnification camera; 7. Reflector one; 8. Reflector two; 9. Lens frame; 10. L-shaped frame; 11. Lens frame; 12. Tension spring; 13. Threaded hole; 14. Clamping bolt; 15. Field lens; 16. Connecting frame; 17. Ring light; 18. Protective lens. Detailed Implementation

[0017] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] Embodiments of this utility model: such as Figure 1-5As shown, the dual-camera galvanometer system includes a laser incident frame 1, a galvanometer module 2, and cameras. It also includes a first light-deflecting box 3 and a second light-deflecting box 4. The laser incident frame 1 is located at the inlet of the first light-deflecting box 3, connecting it to the laser emitting device. The inlet and outlet of the galvanometer module 2 are located on adjacent side walls. The first light-deflecting box 3 is connected to the inlet side of the galvanometer module 2, and the second light-deflecting box 4 is installed on the outlet side of the galvanometer module 2. The outlet of the second light-deflecting box 4 is located at its bottom, serving as the laser outlet. The camera has two... The system comprises a wide-angle camera 5 and a high-magnification camera 6. The wide-angle camera 5 is fixedly mounted on the top of the light-transferring box 3, and the high-magnification camera 6 is fixedly mounted on the rear side of the light-transferring box 4. The light-transferring box 3 and the light-transferring box 4 respectively contain a reflecting mirror 7 and a reflecting mirror 8. The angle between the reflecting mirror 7 and the YZ plane in the coordinate system of the engraving machine is 45°, and the angle between the reflecting mirror 8 and the XY plane in the coordinate system of the engraving machine is 45°. Both the reflecting mirror 7 and the reflecting mirror 8 are light-transmitting reflective mirrors, and the wavelengths of light they can transmit are different. Laser light can pass through the reflecting mirror 7, and after passing through the galvanometer module 2, it can be reflected by the reflecting mirror 8 to the workpiece. Visible light can partially pass through the reflecting mirror 8 to enter the wide-angle camera 5, and partially be reflected by the reflecting mirror 8, and after passing through the galvanometer module 2, it can be reflected by the reflecting mirror 7 to the high-magnification camera 6.

[0019] It is worth noting that the galvanometer module 2 is existing technology and will not be described in detail here.

[0020] The laser wavelength used here is 1064 nanometers. Reflector 7 is fully transparent to light in this wavelength range, while reflector 8 is reflective. Visible light has a wavelength range of 380 to 760 nanometers. Reflector 8 partially reflects light in this wavelength range, while the remainder is transmitted. Reflector 7 reflects light reflected from reflector 8.

[0021] The wide-angle camera 5 is mounted directly above the workpiece, with light shining in a straight line to ensure accurate vision and a wide field of view.

[0022] like Figure 3 , 4 As shown in Figure 5, both the light-transforming box 3 and the light-transforming box 4 are equipped with lens frames 9, which are adjustable lens frames.

[0023] like Figure 5As shown, the lens frame 9 includes an L-shaped frame 10 and a mirror frame 11. Reflecting lens 1 7 and reflecting lens 2 8 are respectively fixedly installed on the corresponding mirror frame 11. The L-shaped frame 10 is fixedly installed in the light-transforming box 1 3 or the light-transforming box 2 4. The horizontal and vertical parts of the L-shaped frame 10 are provided with tension springs 12. The two ends of the tension springs 12 are respectively installed and connected to the L-shaped frame 10 and the mirror frame 11. The corners and both ends of the L-shaped frame 10 are provided with threaded holes 13, and the inside is equipped with a clamping bolt 14. The clamping bolt 14 is in contact with the mirror frame 11.

[0024] It is worth noting that the tension spring 12 has ring hooks at both ends, and the L-shaped frame 10 and the mirror frame 11 have threaded through holes with fixing bolts installed inside. The fixing bolts pass through the ring hooks at the ends of the tension spring 12.

[0025] With the above structure, the lens frame can precisely adjust the angle of the reflective lens through the cooperation of the clamping bolt and the tension spring, which facilitates optical path calibration and maintenance. During adjustment, the clamping bolt 14 can be rotated to hold the lens frame 11 in place and adjust its angle, thereby adjusting the angle of the lens mounted on it.

[0026] like Figure 4 As shown, a field lens 15 is also provided between the galvanometer module 2 and the light-transforming box 4. The two ends of the field lens 15 are installed and connected to the outlet of the galvanometer module 2 and the inlet of the light-transforming box 4.

[0027] The field lens 15 converts the laser beam (or imaging ray) deflected by the galvanometer into a uniformly focused spot in the plane, which determines the precision, size, and uniformity of the laser processing.

[0028] like Figure 2 As shown, a connecting frame 16 is provided between the light beam deflection box 3 and the galvanometer module 2. The connecting frame 16 has through holes and is aligned with the outlet of the light beam deflection box 3 and the inlet of the galvanometer module 2.

[0029] The bottom of the light deflection box 2 4 is provided with a ring light 17, which is coaxial with the laser outlet. The ring light 17 is available in different models and is detachably connected to the light deflection box 2 4.

[0030] like Figure 2 As shown, the ring light 17 can provide supplementary lighting in low-light conditions, thereby making the captured image clearer.

[0031] The bottom of the ring light 17 is equipped with a light-transmitting protective lens 18.

[0032] Working principle: The laser path is as follows: the laser beam enters the light beam deflection box 3 from the laser incident frame 1, passes through the reflector 7 and enters the galvanometer module 2, is reflected by the galvanometer module 2 and enters the light beam deflection box 4, is reflected by the reflector 8 inside the box and exits from the laser exit to process the workpiece.

[0033] Visible light path: Visible light enters the light deflection box 2 4 from the laser outlet, part of it is captured by the wide-angle camera 5 through the reflector 2 8, and part of it is reflected by the reflector 2 8 and enters the galvanometer module 2. After being reflected by the galvanometer module 2, it enters the light deflection box 3, and is then reflected by the reflector 7 inside the box and captured by the high-magnification camera 6.

[0034] The wide-angle camera 5 has a wider shooting range and is connected to the engraving machine system for positioning (visual edge tracking, visual positioning, making it easy to find the geometric center of product processing). The high-magnification camera 6 is used for coaxial monitoring. It magnifies the laser engraving area locally and is connected to the display on the engraving machine. When operating the equipment, the laser engraving position can be seen in real time for feedback on the engraving screen.

[0035] 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.

[0036] 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.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A dual-camera galvanometer system, comprising a laser incident frame (1), a galvanometer module (2), and a camera, characterized in that: It also includes a light-transformation box one (3) and a light-transformation box two (4). The laser incident frame (1) is set at the inlet of the light-transformation box one (3) and is used to connect the light-transformation box one (3) and the laser emitting device. The inlet and outlet of the galvanometer module (2) are set on adjacent side walls. The light-transformation box one (3) is connected to the inlet side of the galvanometer module (2). The light-transformation box two (4) is installed on the outlet side of the galvanometer module (2). The outlet of the light-transformation box two (4) is set at its bottom as a laser outlet. The camera is provided in two parts, namely a wide-angle camera (5) and a high-magnification camera (6). The wide-angle camera (5) is fixedly installed on the top of the light-transforming box one (3), and the high-magnification camera (6) is fixedly installed on the rear side of the light-transforming box two (4). The light-transforming box one (3) and the light-transforming box two (4) are respectively provided with a reflective lens one (7) and a reflective lens two (8). The reflective lens one (7) has an angle of 45° with the YZ plane in the coordinate system of the engraving machine, and the reflective lens two (8) has an angle of 45° with the XY plane in the coordinate system of the engraving machine. Both the first reflector (7) and the second reflector (8) are light-transmitting reflectors, and the wavelengths of light that can be transmitted between them are different. Laser light can pass through the first reflector (7), and after passing through the galvanometer module (2), it can be reflected by the second reflector (8) to the workpiece. Visible light can partially pass through the second reflector (8) to enter the wide-angle camera (5), and partially be reflected by the second reflector (8), and after passing through the galvanometer module (2), it can be reflected by the first reflector (7) to the high-magnification camera (6).

2. The dual-camera galvanometer system according to claim 1, characterized in that: Both the light-transforming box one (3) and the light-transforming box two (4) are equipped with lens frames (9), and the lens frames (9) are adjustable lens frames.

3. The dual-camera galvanometer system according to claim 2, characterized in that: The lens frame (9) includes an L-shaped frame (10) and a mirror frame (11). Reflecting lens one (7) and reflecting lens two (8) are respectively fixedly installed on the corresponding mirror frame (11). The L-shaped frame (10) is fixedly installed in the light-transforming box one (3) or the light-transforming box two (4). The horizontal and vertical parts of the L-shaped frame (10) are provided with tension springs (12). The two ends of the tension springs (12) are respectively connected to the L-shaped frame (10) and the mirror frame (11). The corners and both ends of the L-shaped frame (10) are provided with threaded holes (13), and the inside is equipped with a clamping bolt (14). The clamping bolt (14) is in contact with the mirror frame (11).

4. The dual-camera galvanometer system according to claim 2, characterized in that: A field lens (15) is also provided between the galvanometer module (2) and the light deflection box (4). The two ends of the field lens (15) are installed and connected to the outlet of the galvanometer module (2) and the inlet of the light deflection box (4).

5. The dual-camera galvanometer system according to claim 1, characterized in that: A connecting frame (16) is provided between the light-transforming box (3) and the galvanometer module (2). The connecting frame (16) has a through hole and is aligned with the outlet of the light-transforming box (3) and the inlet of the galvanometer module (2).

6. The dual-camera galvanometer system according to claim 1, characterized in that: The bottom of the light-deflecting box 2 (4) is provided with a ring light (17), which is coaxial with the laser outlet. The ring light (17) has different models and is detachably connected to the light-deflecting box 2 (4).

7. The dual-camera galvanometer system according to claim 6, characterized in that: The bottom of the ring light (17) is equipped with a light-transmitting protective lens (18).

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