Multi-angle adjustable lighting device special for AI visual sorting

Abstract

This invention relates to a multi-angle adjustable lighting device specifically designed for AI visual sorting, belonging to the field of lighting technology. It includes a mounting bracket, an AI visual sorting device mounted on the mounting bracket, a multi-angle adjustment mechanism, and an adjustable lighting mechanism. This invention deeply integrates mechanical structure and intelligent control logic to construct a multi-dimensional dynamic lighting system tailored for AI visual sorting tasks, significantly improving imaging adaptability and recognition accuracy in complex material scenarios. Its core effect stems from the organic cooperation of two sets of coordinated motion mechanisms: on the one hand, the multi-angle adjustment mechanism relies on a first motor to drive a rotating sphere to pitch around a horizontal axis and a second motor to drive it to deflect around a vertical axis, forming an orthogonal two-degree-of-freedom spatial attitude control capability; this structure achieves pitch transmission through a first rotating plate and a first connecting shaft, while simultaneously sliding within a sliding groove at the bottom of the rotating sphere via a connecting shaft at the top of the second rotating plate.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and in particular to a multi-angle adjustable lighting device specifically for AI visual sorting. Background Technology

[0002] Against the backdrop of rapid development in industrial automation and intelligent manufacturing, AI visual sorting technology has been widely applied in fields such as ore sorting, recycling of renewable resources, agricultural product grading, and foreign object removal in food. Its core relies on high-quality image acquisition, and lighting conditions, as a key factor affecting image quality, directly determine the accuracy and stability of AI algorithms in recognizing material features (such as color, texture, shape, and defects). However, traditional visual sorting systems generally employ static lighting schemes with fixed angles and focal lengths, where the light source position, spot size, and illuminance distribution cannot be dynamically adjusted according to material characteristics.

[0003] Static lighting exhibits significant limitations when faced with complex and ever-changing industrial scenarios: On the one hand, different materials (such as metals, plastics, glass, and organic materials) have vastly different optical reflection characteristics. Highly reflective materials are prone to specular glare, while light-absorbing materials can lead to excessively low image signal-to-noise ratios. On the other hand, the surface morphology of materials is diverse (such as unevenness, curved surfaces, and microcracks), making it difficult for fixed lighting to balance global uniformity with highlighting local details. Key features are often lost due to shadow occlusion or overexposure. Furthermore, most existing adjustable lighting devices only support single-dimensional adjustment (such as adjusting only the angle or only the brightness), lacking the ability to coordinate angle and focus control. Moreover, they do not form a closed-loop linkage with AI recognition logic, resulting in a disconnect between "lighting" and "object recognition," making it impossible to achieve true intelligent adaptation.

[0004] While some high-end devices attempt to incorporate robotic arms or servo gimbals to adjust the position of the light source, their complex structure, slow response, and large size make them difficult to integrate into compact sorting equipment. Although using LED arrays for zoned light control can adjust the light intensity distribution, it is difficult to change the physical direction of illumination, and the solution to the shadow problem caused by three-dimensional shapes is limited. More importantly, existing technologies generally ignore the intrinsic relationship between lighting parameters and the input requirements of deep learning models. The sensitivity of AI models to specific defects is often highly dependent on specific lighting geometry and optical configuration. If the lighting cannot be "tailor-made" according to the algorithm's requirements, even with advanced network architectures, it is still difficult to overcome the imaging bottleneck.

[0005] Therefore, this application provides a multi-angle adjustable lighting device specifically for AI visual sorting to meet the requirements. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a multi-angle adjustable lighting device for AI visual sorting, so as to solve the problem that in the existing AI visual sorting system, static or single-dimensional adjustable lighting is difficult to dynamically and collaboratively adjust the angle and focusing state of the light source according to the material, surface morphology and AI algorithm requirements, resulting in glare, shadow and feature loss.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A multi-angle adjustable lighting device for AI visual sorting includes a mounting bracket, an AI visual sorting device mounted on the mounting bracket, a multi-angle adjustment mechanism, and an adjustable lighting mechanism. The multi-angle adjustment mechanism includes a first motor, a rotating ball, and a second motor. The first motor drives the rotating ball to rotate around a horizontal axis, and the second motor drives the rotating ball to deflect around a vertical axis, achieving precise attitude adjustment of the light source 500 in three-dimensional space. The adjustable lighting mechanism includes a coaxially mounted rotating cylinder, a guide cylinder, and a focusing lens. The rotating cylinder has an arc-shaped groove on its wall, and the cylinder slides along the arc-shaped groove. The guide cylinder is connected to a slider, and a straight groove is opened on its wall. The slider passes through the two grooves and is fixed to the condenser lens. When the rotating cylinder rotates, the slider is driven to slide linearly along the straight groove through the groove, thereby steplessly adjusting the axial distance between the condenser lens and the light source, realizing dynamic adaptation of the size and convergence of the illumination spot. The multi-angle adjustment mechanism and the adjustable lighting mechanism are coupled and controlled based on the instructions output by the processing control unit of the AI ​​vision sorting device. According to the real-time optical characteristics of the sorted material and the requirements of the AI ​​recognition algorithm, the angle, intensity and distribution of the illumination are dynamically and collaboratively adjusted.

[0008] Optionally, the multi-angle adjustment mechanism further includes a base fixedly connected to the front of the mounting bracket. The base is inverted L-shaped, with the bottom surface of the top of the base fixedly connected to the first motor and the surface of one side fixedly connected to the second motor.

[0009] Optionally, the output end of the first motor is fixedly connected to a first rotating plate, and the bottom end of the first rotating plate is fixedly connected to a first connecting shaft, which is rotatably connected to the rotating ball.

[0010] Optionally, the output end of the second motor is fixedly connected to a second rotating plate, the top end of the second rotating plate is fixedly connected to a second connecting shaft, and the bottom of the rotating sphere is provided with a sliding groove that matches the second connecting shaft.

[0011] Optionally, the adjustable lighting mechanism further includes an inner cylinder connected to a first connecting shaft on a first rotating plate, a drive motor fixedly mounted on the inner cylinder, and a gear splinedly connected to the output end of the drive motor.

[0012] Optionally, a gear ring is meshed with the outer edge of the gear, one side of the gear ring is fixedly connected to the rotating cylinder, and the rotating cylinder is rotatably connected to the outer ring of the inner cylinder.

[0013] Optionally, the guide cylinder is fixedly connected to the inner ring of the inner cylinder, and the straight groove and the arc groove are both adapted to the slider.

[0014] Optionally, the outer wall of the focusing lens is fixedly connected with four arc-shaped protective moving blocks in a circular array. The four arc-shaped protective moving blocks are slidably connected to the inside of the guide cylinder, and one of the arc-shaped protective moving blocks is fixedly connected to the slider.

[0015] Optionally, one side of the inner cylinder is fixedly connected with multiple connecting rods in a circumferential array, and one end of the multiple connecting rods is fixedly connected to a protective outer cylinder. The protective outer cylinder is adapted to the rotating cylinder and is used to wrap the rotating cylinder, guide cylinder and slider.

[0016] Optionally, the light source is fixedly installed at the end away from the focusing lens, and the processing control unit of the AI ​​visual sorting device is electrically connected to the first motor and the second motor of the multi-angle adjustment mechanism, and also electrically connected to the drive motor of the adjustable lighting mechanism.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, a multi-dimensional dynamic lighting system tailored for AI visual sorting tasks is constructed through the deep integration of mechanical structure and intelligent control logic, significantly improving the imaging adaptability and recognition accuracy in complex material scenarios. Its core effect stems from the organic cooperation of two sets of collaborative motion mechanisms: on the one hand, the multi-angle adjustment mechanism relies on the first motor to drive the rotating ball to pitch around the horizontal axis and the second motor to drive it to deflect around the vertical axis, forming an orthogonal two-degree-of-freedom spatial attitude control capability; this structure realizes pitch transmission through the first rotating plate and the first connecting shaft, and at the same time, with the help of the sliding cooperation of the connecting shaft at the top of the second rotating plate in the sliding groove at the bottom of the rotating ball, it ensures that the ball can still smoothly complete horizontal rotation in any pitch state, thereby realizing the continuous and interference-free omnidirectional pointing of the light source in three-dimensional space, effectively eliminating the imaging defects such as shadow occlusion, highlight overflow or texture weakening caused by the fixed angle of traditional unidirectional lighting, so that the key features of the material surface are always in the most sensitive lighting perspective of the AI ​​algorithm.

[0018] On the other hand, the adjustable lighting mechanism drives the gear to rotate via a drive motor, which in turn meshes with the drive gear ring and the rotating cylinder fixed to it to rotate synchronously. The arc-shaped groove on the inner wall of the rotating cylinder and the straight groove on the guide cylinder together constrain the composite motion trajectory of the slider, accurately converting the circular motion of the rotating cylinder into the linear displacement of the slider along the optical axis. Through the arc-shaped protective moving block fixed to it, the condenser lens is driven to slide smoothly in the guide cylinder, thereby steplessly adjusting the axial distance between the condenser lens and the fixed light source at the rear end. This zoom mechanism realizes the dynamic adaptation of the illumination spot size, illuminance gradient and focusing depth. At close range, it forms a high-brightness, small-area focused spot, which is suitable for enhancing imaging of small defects or edge details. At long distance, it generates a large-area, soft and uniform diffuse light field, which is beneficial for the stable recognition of the overall outline or large-area color difference.

[0019] Crucially, the two mechanisms mentioned above do not operate in isolation, but are uniformly scheduled by the processing and control unit of the AI ​​vision sorting equipment to form a closed loop of "perception-decision-execution": the system automatically generates the optimal lighting strategy based on real-time collected image data and combined with deep learning models to judge the material material, reflective characteristics, defect type and sorting priority, and simultaneously coordinates the spatial angle and focusing state of the light source. When identifying highly reflective metal fragments, the system first adjusts the light source to low-angle side illumination to suppress specular reflection, and then appropriately pulls the focusing lens further away to soften the light intensity distribution. When detecting light-colored impurities on a dark substrate, it uses forward high-intensity focused illumination to maximize contrast. This achieves deep coupling between illumination parameters and AI recognition requirements, providing irreplaceable optical support for high-precision and robust AI visual sorting. Attached Figure Description

[0020] Figure 1 A 3D structural diagram of a multi-angle adjustable lighting device specifically designed for AI visual sorting; Figure 2 This is a three-dimensional structural diagram of the multi-angle adjustment mechanism and adjustable lighting mechanism of the present invention; Figure 3 This is a plan view of the multi-angle adjustment mechanism and adjustable lighting mechanism of the present invention; Figure 4 This is an exploded view of the multi-angle adjustment mechanism of the present invention; Figure 5 This is a perspective view of the adjustable lighting mechanism of the present invention; Figure 6 This is an exploded view of the multi-angle adjustment mechanism and adjustable lighting mechanism of the present invention; Figure 7 This is a cross-sectional view of the multi-angle adjustment mechanism and adjustable lighting mechanism of the present invention; Figure 8 This is a cut view of the multi-angle adjustment mechanism and adjustable lighting mechanism of the present invention.

[0021] Figure label: 100. Mounting bracket; 200. AI visual sorting equipment; 300. Multi-angle adjustment mechanism; 301. Base; 302. First motor; 303. First rotating plate; 304. Rotating sphere; 305. Second rotating plate; 306. Second motor; 400. Adjustable lighting mechanism; 401. Inner cylinder; 402. Drive motor; 403. Gear; 404. Gear ring; 405. Rotating cylinder; 4051. Arc groove; 406. Guide cylinder; 4061. Straight groove; 407. Slider; 408. Condensing lens; 409. Protective outer cylinder; 500. Light source. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0023] like Figures 1 to 8 As shown, an embodiment of the present invention provides a multi-angle adjustable lighting device for AI visual sorting, including a mounting bracket 100, an AI visual sorting device 200 mounted on the mounting bracket 100, a multi-angle adjustment mechanism 300, and an adjustable lighting mechanism 400. The multi-angle adjustment mechanism 300 includes a first motor 302, a rotating ball 304, and a second motor 306. The first motor 302 drives the rotating ball 304 to rotate around a horizontal axis, and the second motor 306 drives the rotating ball 304 to deflect around a vertical axis, thereby achieving precise attitude adjustment of the light source 500 in three-dimensional space. The adjustable lighting mechanism 400 includes a rotating cylinder 405, a guide cylinder 406, and a condenser lens 408 coaxially mounted. The rotating cylinder 405 has an arc-shaped groove on its wall. 4051, and a slider 407 is slidably connected to the arc-shaped groove 4051. The guide cylinder 406 has a corresponding straight groove 4061. The slider 407 passes through the two grooves and is fixedly connected to the condenser lens 408. When the rotating cylinder 405 rotates, the slider 407 is driven to slide linearly along the straight groove 4061 through the groove body, thereby steplessly adjusting the axial distance between the condenser lens 408 and the light source 500, realizing dynamic adaptation of the size and convergence of the illumination spot. The multi-angle adjustment mechanism 300 and the adjustable lighting mechanism 400 are coupled and controlled based on the instructions output by the processing control unit of the AI ​​vision sorting device 200. According to the real-time optical characteristics of the sorted material and the requirements of the AI ​​recognition algorithm, the angle, intensity and distribution of the illumination are dynamically and collaboratively adjusted.

[0024] Specifically, the AI ​​vision sorting device 200 is a core device dedicated to intelligent material identification and sorting. It integrates a high-resolution industrial camera, an image acquisition module, and a deep learning-based AI recognition algorithm system. It can acquire and analyze multi-dimensional visual features such as shape, color, texture, and defects of the inspected materials in real time. The device is linked with a multi-angle adjustable lighting device through a communication interface. According to the recognition requirements of the AI ​​model for different material categories or surface states, it dynamically feeds back control signals to the multi-angle adjustment mechanism 300 and the adjustable lighting mechanism 400 to achieve adaptive adjustment of the light source angle 500°, focusing intensity, and lighting range. The AI ​​vision sorting device 200 is fixedly installed on the mounting bracket 100 and serves as the decision center for lighting control. It ensures that the lighting conditions always match the optimal imaging requirements of the current sorting task, thereby ensuring that high-contrast, low-noise, and clear image input can still be obtained under complex working conditions, significantly improving sorting accuracy and system robustness.

[0025] From the above, we can conclude that: During operation, the AI ​​vision sorting device 200 first performs preliminary image acquisition on the material entering the field of view, and analyzes its surface material, color, reflective properties and defect features based on the built-in deep learning model. Then, the processing control unit generates the optimal lighting strategy in real time according to the specific requirements of the recognition task, and simultaneously sends control commands to the multi-angle adjustment mechanism 300 and the adjustable lighting mechanism 400. Regarding angle adjustment, the first motor 302 drives the rotating sphere 304 to pitch around the horizontal axis, while the second motor 306 drives it to rotate around the vertical axis. This combination allows the light source 500 to achieve precise pointing in any direction within three-dimensional space, effectively avoiding problems such as shadow occlusion, specular reflection, or feature weakening caused by fixed lighting, ensuring that key areas are always at the optimal lighting angle. Regarding spot control, the drive motor 402 rotates the rotating cylinder 405. Its arc-shaped groove 4051 and the straight groove 4061 on the guide cylinder 406 together constrain the movement trajectory of the slider 407, converting the rotational motion into a smooth linear displacement of the focusing lens 408 along the optical axis, thereby continuously adjusting the distance between the lens and the light source 500. This mechanism can dynamically change the size, brightness distribution, and focusing degree of the illumination spot. For example, when detecting micro-cracks, a small spot with high illuminance focused illumination is used to enhance edge contrast; when sorting large areas of discolored impurities, the spot coverage is expanded to form uniform, large-area illumination.

[0026] Because the entire lighting system is linked in a closed loop with the AI ​​recognition logic, it can adaptively optimize lighting parameters for different material categories, conveying speeds, and even changes in ambient light. This not only significantly improves the image signal-to-noise ratio and feature recognizability but also greatly enhances the generalization ability and sorting accuracy of the AI ​​model in complex industrial scenarios. At the same time, the structure adopts a fully enclosed protective design, taking into account both precision transmission and dustproof durability. It is suitable for various high-requirement sorting occasions such as food, ore, and recycled resources, truly achieving the AI ​​vision-specific lighting effect of "on-demand lighting and intelligent adaptation".

[0027] like Figures 2 to 4 As shown, the multi-angle adjustment mechanism 300 also includes a base 301 fixedly connected to the front of the mounting bracket 100. The base 301 is inverted L-shaped, and the bottom surface of the top of the base 301 is fixedly connected to the first motor 302, and one side surface is fixedly connected to the second motor 306. The output end of the first motor 302 is fixedly connected to the first rotating plate 303. The bottom of the first rotating plate 303 is fixedly connected to the first connecting shaft. The first connecting shaft is rotatably connected to the rotating ball 304. The output end of the second motor 306 is fixedly connected to the second rotating plate 305. The top of the second rotating plate 305 is fixedly connected to the second connecting shaft. The bottom of the rotating ball 304 is provided with a sliding groove that matches the second connecting shaft.

[0028] Specifically: the sliding groove is an arc-shaped groove that allows the second connecting shaft to slide along the groove when the ball pitches, thereby transmitting the rotational motion of the second motor 306 to the ball and enabling it to rotate independently around the vertical axis.

[0029] From the above, we can conclude that: The multi-angle adjustment mechanism 300 uses two mutually perpendicularly arranged motors to drive a rotating sphere 304 in concert, enabling the light source 500 to achieve a high degree of freedom in angle adjustment in space. Specifically, the inverted L-shaped base 301 is securely mounted on the front of the bracket. A first motor 302 is fixed below its top, and a second motor 306 is fixed to its side. The first motor 302 drives the first rotating plate 303 to rotate around a horizontal axis. This rotating plate forms a rotational pair with the rotating sphere 304 through a first connecting shaft, allowing the sphere to pitch in the front-back direction. At the same time, the second motor 306 drives the second rotating plate 305 to rotate around a vertical axis. The second connecting shaft at its top is embedded in the sliding groove at the bottom of the rotating sphere 304. While the sphere pitches with the first rotating plate 303, it can still smoothly transmit the horizontal rotational motion. This dual-axis orthogonal drive structure allows the rotating sphere 304 to continuously and smoothly adjust its posture in two independent degrees of freedom, thereby enabling the light source 500 mounted on it to achieve arbitrary horizontal azimuth and pitch angle combination adjustment. This effectively solves the problem that traditional single-axis or fixed-angle lighting is difficult to adapt to the reflective characteristics of complex material surfaces, ensuring that the AI ​​vision system can obtain the optimal lighting conditions with the clearest features in different detection scenarios, significantly improving image quality and sorting reliability.

[0030] like Figures 4 to 8 As shown, the adjustable lighting mechanism 400 also includes an inner cylinder 401 connected to a first connecting shaft on the first rotating plate 303. A drive motor 402 is fixedly mounted on the inner cylinder 401. A gear 403 is splinedly connected to the output end of the drive motor 402. A gear ring 404 is meshed with the outer edge of the gear 403. One side of the gear ring 404 is fixedly connected to a rotating cylinder 405, and the rotating cylinder 405 is rotatably connected to the outer ring of the inner cylinder 401. A guide cylinder 406 is fixedly connected to the inner ring of the inner cylinder 401. The straight groove 4061 and the arc groove 4051 are both adapted to the slider 407. Four arc-shaped protective moving blocks are fixedly connected in a circular array on the outer wall of the condensing lens 408. The moving block is slidably connected to the inside of the guide cylinder 406, and one of the arc-shaped protective moving blocks is fixedly connected to the slider 407. Multiple connecting rods are fixedly connected in a circumferential array on one side of the inner cylinder 401. One end of the multiple connecting rods is fixedly connected to the protective outer cylinder 409. The protective outer cylinder 409 is adapted to the rotating cylinder 405 and is used to wrap the rotating cylinder 405, the guide cylinder 406 and the slider 407. The light source 500 is fixedly installed at the end away from the condenser lens 408. The processing control unit of the AI ​​visual sorting device 200 is electrically connected to the first motor 302 and the second motor 306 of the multi-angle adjustment mechanism 300, and is also electrically connected to the drive motor 402 of the adjustable lighting mechanism 400.

[0031] Specifically: The inner wall of the guide cylinder 406 is provided with at least two protruding guide ribs along the axial direction. Correspondingly, the inner side of the four arc-shaped protective moving blocks fixed to the outer wall of the condensing lens 408 is provided with guide grooves that are compatible with the guide ribs. When the condensing lens 408 is assembled inside the guide cylinder 406, the guide ribs are embedded in the guide grooves to form a sliding pair. This structure allows the arc-shaped protective moving blocks and the condensing lens 408 fixed to them to slide freely along the axial direction of the guide cylinder 406, while strictly limiting their degree of freedom of rotation around the optical axis. The slider 407 is fixedly connected to or integrally formed with one of the arc-shaped protective moving blocks. When the rotating cylinder 405 rotates, the slider 407 is driven to move linearly along the straight groove 4061 by the combined constraint of the arc-shaped groove 4051 and the straight groove 4061. The arc-shaped protective moving block fixed to the slider 407 then drives the entire condensing lens 408 to make a pure axial displacement along the trajectory defined by the guide rib. The cooperation between the guide rib and the guide groove, as well as the joint support of multiple preferably four arc-shaped protective moving blocks arranged in a circular array, ensure the straightness and stability of the movement of the condensing lens 408, and avoid optical axis offset and imaging distortion caused by lens tilting or rotation.

[0032] From the above, we can conclude that: The adjustable lighting mechanism 400, through a precise mechanical transmission and guiding structure, achieves continuous and stable adjustment of the distance between the condenser lens 408 and the light source 500, thereby dynamically controlling the focusing degree and illuminance intensity of the lighting spot. The drive motor 402 is mounted on the inner cylinder 401, and its output end drives the gear ring 403 surrounding the outer ring of the inner cylinder 401 to rotate via the gear 403, which in turn drives the rotating cylinder 405 sleeved on the outer side to rotate synchronously. The rotating cylinder 405 has an arc-shaped groove 4051, while the guide cylinder 406 fixed inside the inner cylinder 401 has an axial straight groove 4061. The slider 407 is simultaneously embedded in both grooves, so that the rotational motion of the rotating cylinder 405 is converted into the linear motion of the slider 407 along the axis of the guide cylinder 406. 07 is rigidly connected to a protective slider 407 on the condenser lens 408, thereby driving the entire condenser lens 408 to move smoothly back and forth within the guide cylinder 406, changing the distance between it and the fixed light source 500 at the rear end, ensuring that the lens remains coaxial and without wobbling during the zooming process, and avoiding image distortion; the outer protective cylinder 409 is fixed to the inner cylinder 401 through a connecting rod, completely enclosing the rotating cylinder 405, the guide cylinder 406 and the slider 407, which not only protects the internal transmission components from dust interference, but also maintains the overall compact structure.

[0033] The entire system is uniformly scheduled by the control unit of the AI ​​vision sorting equipment 200. It can automatically adjust the focusing state according to real-time recognition needs. For example, it uses a long distance weak focus to reduce glare for highly reflective materials and a close distance strong focus to enhance the contrast of details for small defects. Thus, the lighting parameters and AI algorithms work together to significantly improve the adaptability of image acquisition and the intelligence level of the sorting system.

[0034] It is worth mentioning that: The light source 500 is preferably a high-brightness LED module, which has the advantages of high luminous efficiency, long life, fast response speed, easy dimming and selectable spectrum. It is very suitable for high-speed and high-precision AI vision sorting scenarios. The LED module is fixed to the end face of the inner cylinder 401 away from the condenser lens 408 by the mounting base. The center of its light-emitting surface is strictly coaxial with the optical axis of the guide cylinder 406 and the condenser lens 408. The LED module can be configured as a single color temperature white light source 500, or a light source 500 with a specific wavelength such as red light, blue light or infrared light can be selected according to the spectral reflection characteristics of the material to be sorted, so as to further enhance the contrast of the target features. The power supply and control lines of the light source 500 can be arranged along the inside or outside of the inner cylinder 401 and electrically connected to the processing control unit to realize brightness adjustment.

[0035] The core advantage of this invention lies in the deep coupling between lighting parameters and AI recognition requirements. The processing and control unit of the AI ​​visual sorting device 200 has a pre-set or online learning library of mapping relationships between different material categories, surface conditions, and optimal lighting parameters, including the light source angle 500°, the position of the condenser lens 408, and the light source brightness 500°, and executes the following exemplary intelligent control process: Initial Acquisition and Feature Analysis: After system startup, the system first acquires images using the default or previous material's lighting parameters. The processing control unit then uses an AI recognition model to quickly analyze the images, making a preliminary judgment on the material's properties, such as metal, plastic, organic matter, surface optical characteristics (high reflectivity, diffuse reflection, light absorption), and the main features to be detected, such as color differences, texture defects, geometric dimensions, and the presence of foreign objects.

[0036] Lighting strategy decision-making: Based on the analysis results, the processing control unit queries the mapping database or calculates the optimal lighting strategy in real time using algorithms. For example: For highly reflective metal fragments: the strategy is to "suppress specular glare and highlight surface contours." The corresponding control commands are as follows: send a signal to the multi-angle adjustment mechanism 300 to control the first motor 302 and the second motor 306 to adjust the rotating ball 304 to a low-angle lateral lighting position, such as a pitch angle of -10° to 30° and an azimuth angle deviating from the optical axis of 60° to 80°; at the same time, send a signal to the adjustable lighting mechanism 400 to control the drive motor 402 to move the condenser lens 408 to a position away from the light source 500, so that the emitted beam diverges, forming a soft and uniform lighting field and avoiding local overexposure. For light-colored impurities on a dark substrate: the strategy is to "maximize contrast and highlight the difference between the target and the background." The corresponding control instructions are: control the multi-angle adjustment mechanism 300 to adjust the light source 500 to a forward or slightly tilted illumination position, such as close to a 0° tilt angle; at the same time, control the adjustable illumination mechanism 400 to move the condenser lens 408 closer to the light source 500 to form a small spot of light with high illuminance focused illumination, and may increase the drive current of the LED module to increase the overall brightness.

[0037] Parameter execution and image optimization acquisition: The multi-angle adjustment mechanism 300 and the adjustable lighting mechanism 400 receive instructions and respond quickly to adjust the posture and focusing state of the light source 500 to the target value.

[0038] Final image acquisition and sorting: Under optimized lighting conditions, the AI ​​vision sorting device 200 performs final high-quality image acquisition. The images obtained at this stage have clearer features, higher contrast, and lower noise. Based on this image, the processing and control unit performs precise identification, positioning, and classification, and drives the execution output unit to issue accurate sorting commands such as air jet rejection and robotic arm grasping.

[0039] Optional adaptive learning: The system can record the material type, lighting parameters used, and final recognition confidence level. Through long-term data accumulation, machine learning algorithms are used to continuously optimize and expand the "material-lighting parameter" mapping database, enabling the self-evolution of lighting strategies.

[0040] The working principle of the technical solution provided by this invention is as follows: During operation, the AI ​​vision sorting device 200 first uses its built-in high-resolution imaging module to acquire images of materials entering the field of view. The processing and control unit then analyzes key information such as the type of material, surface condition, reflective properties, and potential defects in real time based on a trained deep learning model. According to these analysis results, the system automatically generates an illumination strategy that matches the current identification requirements, including the optimal illumination direction, focusing degree, and spot coverage of the light source 500.

[0041] To achieve precise control of the illumination direction, the device adopts a dual-degree-of-freedom drive structure: one motor controls the pitch motion of the light source 500 around the horizontal axis, and the other motor controls its azimuth rotation around the vertical axis. The two actions are independent and orthogonal, and work together on the same rotating sphere 304, so that the light source 500 mounted on it can continuously and stably point to any angle in three-dimensional space. This multi-angle adjustment capability effectively overcomes the problems of shadow occlusion, specular reflection overexposure or texture blurring that are easily generated by traditional fixed or single-axis lighting, ensuring that the target area is always in a lighting angle that is conducive to AI feature extraction. Meanwhile, to adapt to the different material requirements for spot size and focusing intensity, the system also introduces a continuously variable zoom mechanism. When the drive motor 402 starts, it drives the outer rotating cylinder 405 to rotate through the gear 403. The arc groove 4051 on its cylinder wall and the straight groove 4061 on the inner guide cylinder 406 together constrain the movement trajectory of the slider 407. Since the slider 407 is embedded in both grooves at the same time, the circular motion of the rotating cylinder 405 is converted into the linear displacement of the slider 407 along the optical axis, which in turn drives the condenser lens 408 to move back and forth synchronously. This process can continuously change the distance between the condenser lens 408 and the fixed light source 500 at the rear end, thereby dynamically adjusting the divergence angle and focal point position of the emitted beam. At close range, a small and bright high-illuminance spot is formed, which is suitable for the detection of small defects; at long distance, a large and uniform diffuse spot is formed, which is suitable for large-area color or shape recognition. The entire lighting process is uniformly scheduled by the processing and control unit of the AI ​​vision sorting device 200. Multi-angle adjustment and spotlight adjustment do not operate independently, but are optimized collaboratively based on algorithm feedback.

[0042] Specifically, for example, when identifying highly reflective metal fragments, the system may first adjust the light source 500 to a low-angle side illumination to suppress glare, and then appropriately move the focusing lens 408 further away to soften the light spot; while when detecting light-colored impurities in dark plastic, it may use forward high-intensity focused illumination to enhance contrast. Furthermore, all moving parts are enclosed by a protective outer cylinder 409, ensuring transmission accuracy and preventing dust intrusion, adapting to the complex environment of industrial sites.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A multi-angle adjustable lighting device specifically for AI visual sorting, characterized in that, It includes a mounting bracket (100), an AI visual sorting device (200) mounted on the mounting bracket (100), a multi-angle adjustment mechanism (300), and an adjustable lighting mechanism (400). The multi-angle adjustment mechanism (300) includes a first motor (302), a rotating ball (304), and a second motor (306). The first motor (302) drives the rotating ball (304) to rotate around the horizontal axis, and the second motor (306) drives the rotating ball (304) to deflect around the vertical axis, thereby achieving precise attitude adjustment of the light source (500) in three-dimensional space. The adjustable lighting mechanism (400) includes a rotating cylinder (405), a guide cylinder (406), and a condenser lens (408) coaxially mounted. The rotating cylinder (405) has an arc-shaped groove (4051) on its wall, and a slider (407) is slidably connected to the arc-shaped groove (4051). The guide cylinder (406) has a corresponding straight groove (4061) on its wall. The slider (407) passes through the two grooves and is fixedly connected to the condenser lens (408). When the rotating cylinder (405) rotates, the slider (407) is driven to slide linearly along the straight groove (4061) through the groove body, thereby steplessly adjusting the axial distance between the condenser lens (408) and the light source (500) to achieve dynamic adaptation of the size and convergence of the lighting spot. The multi-angle adjustment mechanism (300) and the adjustable lighting mechanism (400) are coupled and controlled based on the instructions output by the processing control unit of the AI ​​visual sorting device (200). According to the real-time optical characteristics of the sorted material and the requirements of the AI ​​recognition algorithm, the angle, intensity and distribution of the light are dynamically and collaboratively adjusted.

2. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The multi-angle adjustment mechanism (300) also includes a base (301) fixedly connected to the front of the mounting bracket (100). The base (301) is inverted L-shaped, and the bottom surface of the top of the base (301) is fixedly connected to the first motor (302), and the surface on one side is fixedly connected to the second motor (306).

3. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The output end of the first motor (302) is fixedly connected to a first rotating plate (303), and the bottom end of the first rotating plate (303) is fixedly connected to a first connecting shaft, which is rotatably connected to the rotating ball (304).

4. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The output end of the second motor (306) is fixedly connected to the second rotating plate (305), the top end of the second rotating plate (305) is fixedly connected to the second connecting shaft, and the bottom of the rotating ball (304) is provided with a sliding groove that is compatible with the second connecting shaft.

5. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The adjustable lighting mechanism (400) also includes an inner cylinder (401) connected to a first connecting shaft on a first rotating plate (303). A drive motor (402) is fixedly installed on the inner cylinder (401), and a gear (403) is splined to the output end of the drive motor (402).

6. The multi-angle adjustable lighting device for AI visual sorting according to claim 5, characterized in that, A gear ring (404) is meshed with the outer edge of the gear (403). One side of the gear ring (404) is fixedly connected to the rotating cylinder (405), and the rotating cylinder (405) is rotatably connected to the outer ring of the inner cylinder (401).

7. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The guide cylinder (406) is fixedly connected to the inner ring of the inner cylinder (401), and the straight groove (4061) and the arc groove (4051) are both adapted to the slider (407).

8. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The outer wall of the focusing lens (408) is fixedly connected with four arc-shaped protective moving blocks in a circular array. The four arc-shaped protective moving blocks are slidably connected to the inside of the guide cylinder (406), and one of the arc-shaped protective moving blocks is fixedly connected to the slider (407).

9. The multi-angle adjustable lighting device for AI visual sorting according to claim 5, characterized in that, One side of the inner cylinder (401) is fixedly connected with multiple connecting rods in a circumferential array. One end of the multiple connecting rods is fixedly connected to a protective outer cylinder (409). The protective outer cylinder (409) is adapted to the rotating cylinder (405) and is used to wrap the rotating cylinder (405), the guide cylinder (406) and the slider (407).

10. The multi-angle adjustable lighting device for AI visual sorting according to claim 1, characterized in that, The light source (500) is fixedly installed at one end away from the condenser lens (408). The processing control unit of the AI ​​visual sorting device (200) is electrically connected to the first motor (302) and the second motor (306) of the multi-angle adjustment mechanism (300), and is also electrically connected to the drive motor (402) of the adjustable lighting mechanism (400).

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