An imaging light supplementing component, a light supplementing circuit and an optoelectronic imaging laser machine

Abstract

The application provides an imaging light supplementing component, a light supplementing circuit and a photoelectric imaging laser machine, and particularly relates to the technical field of photoelectric imaging laser machines, which comprises an external aluminum shell, and further comprises a light supplementing component arranged in the external aluminum shell; the light supplementing component comprises an LED light supplementing lamp plate, a light homogenizing sheet, a combined lens, an objective lens, a camera, a half-transmission half-reflection mirror assembly and an anti-reflection structure; the imaging light supplementing component, the light supplementing circuit and the photoelectric imaging laser machine integrate the LED light supplementing lamp plate, the light homogenizing sheet, the half-transmission half-reflection mirror assembly, the combined lens, the camera and the anti-reflection structure in the external aluminum shell to form a compact integrated light supplementing component, solve the defects of poor imaging quality, serious stray light interference and heavy structure in the prior art, support the light supplementing uniformity, the imaging definition and the anti-stray light capability, realize excellent performances of stable light supplementing, clear imaging and non-interference of stray light, and meet the demand of laser processing equipment for high-precision visual positioning and monitoring.

Description

Technical Field

[0001] This invention provides an imaging supplementary lighting component, a supplementary lighting circuit, and a photoelectric imaging laser machine, specifically relating to the field of photoelectric imaging laser machine technology. Background Technology

[0002] A photoelectric imaging laser machine is a device that integrates laser processing and visual imaging functions, just as... Figure 5 The existing technology shown is the "photoelectric imaging laser machine" under the HOYA brand. It generates laser through a laser generation and emission module (D2), guides the laser to the objective lens (D4) through the laser transmission module (D3) to process the object, and uses a supplementary light module (D5) and an imaging camera (D6) to acquire the image of the object surface, thereby achieving precise positioning and monitoring of the processing process. It is widely used in precision manufacturing, material processing and other fields.

[0003] However, the existing photoelectric imaging laser camera body (D1) has the following defects:

[0004] First, there is a lack of integrated settings, such as Figure 5 The photoelectric imaging laser machine shown has multiple independent modules, such as the laser generation and emission module (D2), the supplementary light module (D5), and the imaging camera (D6). The installation standards of each module are not uniform, and there is no common stable mounting carrier. This not only results in a large overall size of the device, but also in poor stability due to its large size. Even slight vibrations (such as equipment contact) or equipment debugging can easily cause misalignment of the laser light path, supplementary light path, and imaging light path, affecting the processing positioning accuracy.

[0005] Secondly, the coordination between supplementary lighting and imaging is poor. The light output by the supplementary lighting module (D5) lacks an effective process of homogenizing light and resisting stray light. Moreover, the turning structure of the supplementary lighting optical path and the imaging optical path is complex, often using multiple mirrors to reflect back and forth, resulting in a long optical path and low light utilization efficiency. Furthermore, excess supplementary lighting light and stray light leaked from the laser transmission module (D3) are prone to multiple reflections inside the device, eventually entering the imaging camera (D6) and causing the image to be white and the contrast to decrease, thus affecting the final imaging effect.

[0006] Therefore, this invention proposes an imaging supplementary lighting component, a supplementary lighting circuit, and a photoelectric imaging laser machine to overcome the shortcomings of the prior art. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an imaging supplementary lighting component, a supplementary lighting circuit, and a photoelectric imaging laser machine, which can effectively solve the related technical problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention discloses an imaging supplementary lighting component, a supplementary lighting circuit, and a photoelectric imaging laser, including an outer aluminum shell and a supplementary lighting component disposed inside the outer aluminum shell;

[0010] The lighting components include: LED fill light panel, light diffuser, combination lens, objective lens, camera, semi-transparent and semi-reflective mirror assembly, and anti-reflection structure;

[0011] The objective lens is vertically fixed to the bottom of one side of the outer aluminum shell;

[0012] The LED fill light panel is fixed inside the lower part of the outer aluminum shell and is located next to the objective lens.

[0013] The light diffuser is fixed horizontally above the LED fill light board, and the projection of the light diffuser completely covers the light-emitting surface of the LED fill light board;

[0014] The semi-transparent and semi-reflective mirror assembly is fixedly installed inside the outer aluminum shell and is located directly above the light-diffusing sheet;

[0015] The combined lens is fixed to the side of the semi-transparent mirror assembly away from the objective lens;

[0016] The camera is fixed inside the outer aluminum shell at the end away from the objective lens, and the center of the camera's photosensitive chip is collinear with the axis of the combined lens.

[0017] An anti-reflective structure is located in the area above the semi-transparent mirror assembly inside the outer aluminum shell to absorb stray light.

[0018] The light emitted by the LED fill light board is diffused by a light diffuser to form soft diffused light. The light path direction is changed by the semi-transparent and semi-reflective mirror assembly and directed to the objective lens to illuminate the surface of the object to be processed. The reflected light from the surface of the object to be processed returns along the original path, passes through the objective lens and the semi-transparent and semi-reflective mirror assembly, and is transmitted to the combined lens. The combined lens then focuses the light onto the photosensitive chip of the camera.

[0019] Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects:

[0020] This imaging supplementary lighting component, supplementary lighting circuit, and photoelectric imaging laser machine integrates LED supplementary lighting board, light homogenizer, semi-transparent and semi-reflective mirror assembly, combined lens, camera, and anti-reflection structure into an external aluminum shell in a small volume and small space, forming a compact integrated supplementary lighting component. This solves the defects of poor imaging quality, serious stray light interference, and bulky structure in the existing technology. At the same time, the compact body also improves the overall vibration resistance.

[0021] Meanwhile, the complementary light path, imaging light path and anti-interference structure work together effectively to ensure that the uniformity of the complementary light, the clarity of the imaging and the ability to resist stray light support each other, so as to achieve excellent performance of stable complementary light, clear imaging and no interference from stray light, and meet the requirements of laser processing equipment for high-precision visual positioning.

[0022] Among them, the use of a rectangular large-area LED array panel combined with a light-diffusing sheet made of diffusion film material solves the problem of "bright center and dark edge" of existing point light source supplementary lighting; the surface light source has a wider coverage range, and combined with the light-diffusing treatment of the light-diffusing sheet, it can improve the uniformity of the supplementary lighting coverage on the surface of the object to be processed, avoid local overexposure or underexposure of the image caused by uneven supplementary lighting, and improve the supplementary lighting effect.

[0023] In addition, by utilizing the achromatic function of the combined lens, the focal length difference of different wavelengths of light is compensated, overcoming the defects of "blurred edges and color separation" in the imaging of a single convex lens in the existing technology, ensuring that all wavelengths of light in the reflected light of the object can be accurately focused on the camera's photosensitive chip, and achieving full-area clarity of the image.

[0024] By utilizing the 45° tilt setting of the semi-transparent and semi-reflective mirror assembly, the supplementary light beam can be redirected from "vertical to horizontal and then back to vertical" in the shortest path. Compared with the existing multi-lens redirection design, this significantly shortens the optical path length, makes the overall structure more compact, and reduces the difficulty of lens calibration. Attached Figure Description

[0025] Figure 1 This is a partial front-view three-dimensional structural diagram of the main body of the laser machine in this invention;

[0026] Figure 2 This is a partial three-dimensional structural diagram of the relevant components inside the outer aluminum shell in this invention;

[0027] Figure 3 This is a bottom-view partial three-dimensional structural diagram of the relevant internal components of the outer aluminum shell in this invention;

[0028] Figure 4 This is a schematic diagram of the supplementary lighting circuit in this invention;

[0029] Figure 5 This is a three-dimensional structural diagram of relevant components in the existing optoelectronic imaging laser machine.

[0030] The labels in the diagram represent:

[0031] 1. Laser machine body; 12. External aluminum shell; 11. Head; 13. Laser generation and emission module; 14. Total reflection mirror;

[0032] Lighting components: 21. LED fill light board; 22. Light diffuser;

[0033] Semi-transparent and semi-reflective mirror assembly: 15. First semi-transparent and semi-reflective mirror; 23. Second semi-transparent and semi-reflective mirror;

[0034] 24. Anti-reflective cavity structure; 25. Combined lens;

[0035] 16. Objective lens;

[0036] 3. Camera. Detailed Implementation

[0037] The present invention will be further described below with reference to embodiments.

[0038] Example 1:

[0039] like Figures 1 to 5 As shown, an imaging supplementary lighting component and supplementary lighting circuit include an outer aluminum shell 12. The outer aluminum shell 12 is made of one-piece molded aluminum alloy material, which can not only provide a stable installation reference for the internal components, but also conduct the small amount of heat generated by the LED supplementary lighting board 21 and the camera 3 during operation to the outside through the thermal conductivity of the metal, while preventing external dust and moisture from entering the optical path and contaminating the optical components.

[0040] It also includes a supplementary lighting component disposed within the outer aluminum shell 12; the supplementary lighting component includes: an LED supplementary lighting panel 21, a light-diffusing sheet 22, a combination lens 25, an objective lens 16, a camera 3, and a semi-transparent and semi-reflective mirror assembly;

[0041] The objective lens 16 is vertically fixed to the bottom of one side of the outer aluminum shell 12;

[0042] The LED fill light board 21 is fixed inside the lower part of the outer aluminum shell 12 and is located next to the objective lens 16.

[0043] Optionally, in this embodiment, a flexible buffer pad is also provided between the mounting contact surface of the LED fill light board 21 and the outer aluminum shell 12. Specifically, the buffer pad is made of silicone, which can absorb the slight vibrations generated when the LED fill light board 21 is working, and prevent the vibrations from being transmitted to the light diffuser 22 or the semi-transparent mirror assembly, causing the light path to deviate.

[0044] It is worth noting that this embodiment is also equipped with a main controller, which is electrically connected to the LED fill light board 21 and the camera 3 respectively, forming a "fill light to imaging" control: when starting, the main controller first sends a signal to the LED fill light board 21, and after its light emission is stable and processed into soft diffused light by the light diffuser 22, it then delays sending the acquisition signal to the camera 3; when stopping, the main controller first turns off the camera 3, and then turns off the LED fill light board 21.

[0045] Compared with existing technologies, this method avoids the problem of uneven brightness in the image caused by the image being formed before the supplementary light is stable. Existing technologies often result in localized overly bright or dark areas in the image because the supplementary light and the image are started simultaneously. However, the control method of this embodiment can ensure that the supplementary light conditions are consistent for each image, thereby improving the accuracy of supplementary light positioning.

[0046] The light diffuser 22 is horizontally fixed directly above the LED fill light board 21, and the projection of the light diffuser 22 completely covers the light-emitting surface of the LED fill light board 21.

[0047] Specifically, the light diffuser 22 is made of a diffusion film material, which converts the point light emitted by the LED fill light panel 21 array into continuous surface diffused light, eliminating the graininess of the light source itself.

[0048] The semi-transparent and semi-reflective mirror assembly is fixedly installed inside the outer aluminum shell 12 and is located directly above the light-diffusing sheet 22;

[0049] The combined lens 25 is fixed to the side of the semi-transparent mirror assembly away from the objective lens 16;

[0050] The camera 3 is fixed inside the outer aluminum shell 12 at the end away from the objective lens 16, and the center of the photosensitive chip of the camera 3 is collinear with the axis of the combined lens 25.

[0051] An anti-reflective structure is located in the area above the semi-transparent mirror assembly inside the outer aluminum shell 12 to absorb stray light;

[0052] Specifically, the anti-reflective structure is not a simple planar coating, but rather an inwardly recessed cavity designed in the corresponding area of ​​the inner wall of the outer aluminum shell 12. In addition to being coated with a light-absorbing coating, the inner wall of the cavity is also frosted to increase surface roughness. This allows excess light reflected by the semi-transparent mirror component to enter the cavity and be gradually absorbed through multiple diffuse reflections, rather than being directly reflected back to the main light path. This prevents stray light from being randomly reflected inside the shell and ultimately entering the camera 3, causing the image to become hazy and the contrast to decrease. The anti-reflective structure of this embodiment blocks stray light interference from a physical level.

[0053] It should be noted that in existing technologies, external incident lasers often contain multiple wavelengths, namely non-target 1050nm infrared lasers. These stray lights will be transmitted downwards along with the laser, producing a dazzling white light when illuminating an object, similar to the strong light in a photo studio, causing "white spots" in the camera image. At the same time, in existing technologies, the supplementary light passes through a semi-transparent and semi-reflective mirror, and the unabsorbed part will be reflected multiple times inside the housing, eventually entering the camera and causing the overall image to be white. This is the core reason for the white image in existing technologies.

[0054] The anti-reflection structure in this embodiment not only absorbs redundant light from the semi-transparent and semi-reflective mirror assembly, but also works in conjunction with a dedicated 1050nm filter structure in the laser optical path. The dedicated filter structure is configured to be located between the laser emitting end of the laser generation and emission module 13 and the total reflection mirror 14. Note: No annotation is provided in the figure for ease of showing the structure.

[0055] In this way, stray light from non-target wavelength lasers is reduced at the source, thus solving the problem of image whitening in two ways and resolving the problem that existing technologies have failed to address.

[0056] The light emitted by the LED fill light board 21 is diffused by the light diffuser 22 to form soft diffused light. The light path direction is changed by the semi-transparent and semi-reflective mirror assembly and directed to the objective lens 16 to illuminate the surface of the object to be processed. The reflected light from the surface of the object to be processed returns along the original path, passes through the objective lens 16 and the semi-transparent and semi-reflective mirror assembly, and is transmitted to the combined lens 25. The combined lens 25 then focuses the light onto the photosensitive chip of the camera 3.

[0057] Furthermore, the LED fill light board 21 is a rectangular large-area LED array panel, its light-emitting surface is parallel to the light-diffusing sheet 22, and the gap between the edge of the LED fill light board 21 and the inner wall of the outer aluminum shell 12 does not exceed 5mm.

[0058] Specifically, a large-area array panel was chosen instead of the existing point light source because the area light source has a wider illumination range and more uniform coverage. Unlike the point light source, it does not need to rely on multiple reflectors to adjust the shape of the light spot. It can be directly used with the light-diffusing sheet 22 to achieve full-area illumination.

[0059] Existing point light source supplementary lighting technology is prone to the problem of "bright center and dark edges", especially when processing large-sized objects, the edge area is blurred. However, the surface light source of this embodiment can adapt to the supplementary lighting needs of objects of different sizes.

[0060] More importantly, existing technologies lack "base color removal technology" and rely on high-precision point light sources to control the shape of the light spot; otherwise, uneven lighting will directly lead to disordered base color in the image.

[0061] This embodiment achieves background color restoration by combining a surface light source and a light-diffusing sheet with subsequent image processing algorithms, without the need for strict control of the light spot precision. This solution eliminates the dependence on expensive, high-precision point light sources and simplifies the supplementary lighting structure.

[0062] Specifically, the semi-transparent and semi-reflective mirror assembly includes a first semi-transparent and semi-reflective mirror 15 and a second semi-transparent and semi-reflective mirror 23;

[0063] Furthermore, the vertical distance between the second semi-transparent mirror 23 and the light homogenizer 22 is 10-20mm, the horizontal distance between the first semi-transparent mirror 15 and the second semi-transparent mirror 23 is 15-25mm, and the vertical distance between the lower end face of the first semi-transparent mirror 15 and the upper end face of the objective lens 16 is 8-15mm.

[0064] The second semi-transparent and semi-reflective mirror 23 is tilted at 45° and positioned directly above the light-diffusing plate 22, with its mirror surface facing the light-emitting area of ​​the light-diffusing plate 22 and the first semi-transparent and semi-reflective mirror 15.

[0065] Its function is to design both semi-transparent and semi-reflective mirrors to be tilted at 45° so that the light changes direction by exactly 90° when it is reflected, so that the light can achieve the shortest light path change from "vertically upward to horizontal transmission and then vertical downward".

[0066] The reflectors commonly used in existing technologies require multiple lenses to achieve optical path reversal, which not only results in a long optical path and large space occupation, but also increases the difficulty of lens calibration. Even slight vibrations can cause optical path deviation. The 45° tilt design in this embodiment can shorten the optical path, simplify the structure, and improve vibration resistance.

[0067] The first semi-transparent mirror 15 is fixed at an angle of 45° to the side of the second semi-transparent mirror 23 away from the light homogenizer 22, and the mirror surface of the first semi-transparent mirror 15 faces the second semi-transparent mirror 23 and the objective lens 16.

[0068] The light emitted by the LED fill light board 21 passes through the light diffuser 22 and is directed to the second semi-transparent mirror 23. After being reflected by the second semi-transparent mirror 23, the light path is changed by 90° and directed to the first semi-transparent mirror 15. After being reflected by the first semi-transparent mirror 15, the light path is changed by 90° and the light is directed vertically downward through the objective lens 16 to illuminate the surface of the object to be processed.

[0069] Specifically, the transmitted light path of the first semi-transparent mirror 15 is directly opposite the combined lens 25.

[0070] After the reflected light from the surface of the object to be processed is directed by the objective lens 16 to the first semi-transparent mirror 15, some of the light passes through the first semi-transparent mirror 15 and is transmitted to the combined lens 25 along the horizontal path.

[0071] Externally incident laser light is reflected and directed toward the surface of the first semi-transparent and semi-reflective mirror 15. Part of the laser light passes through the first semi-transparent and semi-reflective mirror 15 and is directed vertically downward toward the objective lens 16. Part of the laser light is reflected by the first semi-transparent and semi-reflective mirror 15 and absorbed by the anti-reflection structure.

[0072] Specifically, the first semi-transparent and semi-reflective mirror 15 simultaneously undertakes three functions: "light supplementation and reflection, imaging transmission, and laser screening," allowing the light supplementation, imaging, and laser to share the same objective lens 16, thus avoiding the structural complexity caused by the separate design of the three optical paths in the prior art.

[0073] Existing technologies often use separate lenses and optical paths for laser, supplementary lighting, and imaging, which not only results in large size but also makes it easy for misalignment of the optical paths to cause processing positioning deviations. The integrated design of this embodiment allows the three optical paths to be precisely aligned, improving processing accuracy.

[0074] Specifically, the combined lens 25 is configured as follows: an achromatic lens group, which is composed of a convex lens and a concave lens coaxially bonded together.

[0075] Its function is to compensate for the focal length difference of light of different wavelengths by using an achromatic design that combines convex and concave lenses.

[0076] Existing technologies use only a single convex lens for imaging, which can cause red, green, and blue colors to separate or become blurred at the edges of the image due to the different paths of light passing through the center and edges of the lens. However, the achromatic lens group in this embodiment can accurately focus light of all wavelengths onto the photosensitive chip of the camera 3, achieving consistent clarity between the center and edges of the image.

[0077] Meanwhile, existing technologies for mitigating chromatic aberration typically require adding multiple lenses for stacking, leading to increased imaging module size and cost. In contrast, the "convex lens + concave lens" design in this embodiment ensures chromatic aberration reduction without adding extra size or cost, achieving the dual benefits of "improved performance and simplified structure".

[0078] The convex lens is closer to the semi-transparent mirror assembly, the concave lens is closer to the camera 3, and the axis of the combined lens 25 is vertically aligned with the center of the photosensitive chip of the camera 3.

[0079] In use: When the equipment is started, the main controller first activates the LED fill light board 21, which transmits the light emitted upward to the light diffuser 22. The light diffuser 22 converts the point light of the LED array into continuous planar diffused light, eliminating the graininess of the light source itself and ensuring that the light is soft and evenly distributed. The light that has been diffused continues to be transmitted upward to the semi-transparent and semi-reflective mirror assembly. The second semi-transparent and semi-reflective mirror 23 first reflects the vertically upward light into a horizontal direction, and then the first semi-transparent and semi-reflective mirror 15 reflects the horizontal light into a vertically downward direction. Finally, the light is accurately illuminated onto the surface of the object to be processed through the objective lens 16.

[0080] When light is reflected from the surface of an object, the reflected light returns in reverse along the original supplementary light path: it first enters the device through the objective lens 16 and is directed towards the first semi-transparent mirror 15; at this time, the first semi-transparent mirror 15 switches its function, allowing some of the reflected light to pass through and be transmitted along a horizontal path to the combined lens 25. The combined lens 25, through the cooperation of convex and concave lenses, accurately focuses the reflected light of different wavelengths onto the photosensitive chip of the camera 3 to complete the imaging.

[0081] During this process, excess stray light generated during reflection or transmission by the semi-transparent mirror assembly, such as supplementary light rays that do not travel along the main optical path and redundant portions of laser reflection, is guided to a recessed cavity with a light-absorbing coating on its inner wall. After multiple diffuse reflections by the frosted surface inside the cavity, the stray light is gradually absorbed, preventing it from bouncing back into the main optical path and interfering with imaging. Simultaneously, the main controller ensures that camera 3 acquires images only when the supplementary light is stable through a "supplementary light before imaging" control, further guaranteeing image quality.

[0082] Example 2:

[0083] like Figure 2 , Figure 3 As shown, the aforementioned imaging supplementary lighting component and supplementary lighting circuit also include an anti-reflection structure, which addresses the core defect of existing technology: "stray light is reflected indiscriminately, interfering with imaging".

[0084] It includes: an anti-reflective cavity structure 24, which is a groove formed on the inner wall of the outer aluminum shell 12, and the grooves are respectively located directly above the second semi-transparent mirror 23 and to the side of the first semi-transparent mirror 15.

[0085] The inner wall of the anti-reflective cavity structure 24 is coated with a black matte coating or a special light-absorbing coating.

[0086] Specifically, the coating is not a regular black paint, but a high light-absorbing material for optical applications. Its matte finish converts stray light entering the groove into diffuse reflection rather than specular reflection.

[0087] The purpose of this embodiment is that the matte coating allows stray light to be gradually absorbed after multiple diffuse reflections within the groove, significantly reducing the stray light escape rate. At the same time, the special light-absorbing coating can also target the absorption of visible light in the supplementary light and the excess frequency band light in the laser, further reducing the interference of different types of stray light.

[0088] Example 3:

[0089] Based on the above embodiments one and two, a photoelectric imaging laser machine is now provided, which adopts the above-mentioned imaging supplementary lighting components and supplementary lighting circuits, including a laser machine body 1, a machine head 11, a laser generating and emitting module 13, and a total reflection mirror 14; the machine head 11 is fixed to the top of the laser machine body 1; wherein, the above-mentioned imaging supplementary lighting components and supplementary lighting circuits are integrated inside the machine head 11; the laser generating and emitting module 13 is fixed in the upper region inside the machine head 11, and its laser output end is horizontally facing the total reflection mirror 14; the total reflection mirror 14 is fixed at an angle of 45° to the side of the laser generating and emitting module 13 facing the objective lens 16, and the mirror surface of the total reflection mirror 14 is directly facing the laser output end of the laser generating and emitting module 13 and the first semi-transparent semi-reflective mirror 15 in the imaging supplementary lighting components and supplementary lighting circuits; the laser emitted by the laser generating and emitting module 13 is reflected by the total reflection mirror 14 and then vertically downward towards the first semi-transparent semi-reflective mirror 15.

[0090] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An imaging light supplementing member, light supplementing circuit, comprising an outer aluminum shell (12), characterized in that, The light supplementing member is arranged in the external aluminum shell (12); The light supplementing member comprises an LED light supplementing lamp plate (21), a light homogenizing sheet (22), a combined lens (25), an objective lens (16), a camera (3), a half-transmission half-reflection mirror assembly and an anti-reflection structure; The objective lens (16) is vertically fixed to the bottom of one side of the external aluminum shell (12); The LED light supplementing lamp plate (21) is fixed to the lower region in the external aluminum shell (12) and is located beside the objective lens (16); The light homogenizing sheet (22) is horizontally fixed above the LED light supplementing lamp plate (21), and the projection of the light homogenizing sheet (22) completely covers the light emitting surface of the LED light supplementing lamp plate (21); The half-transmission half-reflection mirror assembly is fixedly installed in the external aluminum shell (12) and is located above the light homogenizing sheet (22); The combined lens (25) is fixed to the side of the half-transmission half-reflection mirror assembly away from the objective lens (16); The camera (3) is fixed to the end of the external aluminum shell (12) away from the objective lens (16), and the center of the photosensitive chip of the camera (3) is collinear with the axis of the combined lens (25); The anti-reflection structure is arranged in the upper region of the half-transmission half-reflection mirror assembly in the external aluminum shell (12) and is used for absorbing stray light; The light emitted by the LED light supplementing lamp plate (21) forms soft scattered light after being homogenized by the light homogenizing sheet (22), changes the light path direction through the half-transmission half-reflection mirror assembly and is shot to the objective lens (16) to irradiate the surface of the object to be processed; the reflected light of the surface of the object to be processed returns along the original path, is transmitted to the combined lens (25) after passing through the objective lens (16) and the half-transmission half-reflection mirror assembly, and is focused to the photosensitive chip of the camera (3) by the combined lens (25); The half-transmission half-reflection mirror assembly comprises a first half-transmission half-reflection mirror (15) and a second half-transmission half-reflection mirror (23); The second half-transmission half-reflection mirror (23) is arranged above the light homogenizing sheet (22) at an angle of 45°, and the mirror surface thereof faces the light emitting region of the light homogenizing sheet (22) and the first half-transmission half-reflection mirror (15); The first half-transmission half-reflection mirror (15) is fixed to the side of the second half-transmission half-reflection mirror (23) away from the light homogenizing sheet (22) at an angle of 45°, and the mirror surface thereof faces the second half-transmission half-reflection mirror (23) and the objective lens (16); The light emitted by the LED light supplementing lamp plate (21) is shot to the second half-transmission half-reflection mirror (23) after passing through the light homogenizing sheet (22), changes the light path by 90° after being reflected by the second half-transmission half-reflection mirror (23), is shot to the first half-transmission half-reflection mirror (15), changes the light path by 90° after being reflected by the first half-transmission half-reflection mirror (15) and vertically downwardly transmits through the objective lens (16) to irradiate the surface of the object to be processed.

2. The imaging light supplementing member, light supplementing line according to claim 1, wherein, The transmission light path of the first half-transmission half-reflection mirror (15) is opposite to the combined lens (25); After the reflected light of the surface of the object to be processed is shot to the first half-transmission half-reflection mirror (15) through the objective lens (16), part of the light transmits through the first half-transmission half-reflection mirror (15) and is transmitted to the combined lens (25) along a horizontal path. The laser light externally incident is reflected to the mirror surface of the first half-transmission half-reflection mirror (15), part of the laser light is transmitted through the first half-transmission half-reflection mirror (15) and vertically downwardly shot to the objective lens (16), and part of the laser light is reflected to the anti-reflection structure and absorbed.

3. The imaging light supplementing member, light supplementing line according to claim 1, wherein, The combined lens (25) is configured as an achromatic lens group formed by coaxially bonding a convex lens and a concave lens; The convex lens is close to the side of the half-transmission half-reflection mirror assembly, the concave lens is close to the side of the camera (3), and the axial line of the combined lens (25) is vertically aligned with the center of the photosensitive chip of the camera (3).

4. The imaging light supplementing member, light supplementing line according to claim 1, wherein, The anti-reflection structure comprises an anti-reflection cavity structure (24), which is a groove formed in the inner wall of the external aluminum shell (12), and the grooves are respectively located above the second half-transmission half-reflection mirror (23) and on the side of the first half-transmission half-reflection mirror (15). The inner wall of the anti-reflection cavity structure (24) is coated with a black matte coating or a special light-absorbing coating.

5. The imaging light supplementing member, light supplementing line according to claim 1, wherein, The LED light supplementing lamp panel (21) is a rectangular large-area LED array panel, the light emitting surface of which is parallel to the light homogenizing sheet (22), and the gap between the edge of the LED light supplementing lamp panel (21) and the inner wall of the external aluminum shell (12) is not more than 5 mm.

6. The imaging light supplementing member, light supplementing line according to claim 1, wherein, The vertical distance between the second half-transmission half-reflection mirror (23) and the light homogenizing sheet (22) is 10-20 mm, the horizontal distance between the first half-transmission half-reflection mirror (15) and the second half-transmission half-reflection mirror (23) is 15-25 mm, and the vertical distance between the lower end surface of the first half-transmission half-reflection mirror (15) and the upper end surface of the objective lens (16) is 8-15 mm.

7. A photoelectric imaging laser machine applied to the light supplementing component and light supplementing circuit according to any one of claims 1 to 6, characterized in that, The laser machine comprises a laser machine body (1), a machine head (11), a laser generating and emitting module (13), and a full reflection mirror (14); the machine head (11) is fixed to the top of the laser machine body (1); The imaging light supplementing component and the light supplementing circuit are integrated in the machine head (11); The laser generating and emitting module (13) is fixed to the upper region in the machine head (11), and the laser output end thereof horizontally faces the full reflection mirror (14); The full reflection mirror (14) is fixed to the side of the laser generating and emitting module (13) facing the objective lens (16) at an angle of 45°, and the mirror surface of the full reflection mirror (14) faces the laser output end of the laser generating and emitting module (13) and the first half-transmission half-reflection mirror (15) in the imaging light supplementing component and the light supplementing circuit. The laser emitted by the laser generating and emitting module (13) is reflected by the full reflection mirror (14) and vertically downwardly shot to the first half-transmission half-reflection mirror (15).

Images