Self-rotating cleaning lens structure based on miniature electromagnetic turbine and self-cleaning method

Abstract

The invention belongs to the technical field of lens cleaning, and particularly relates to a self-spinning lens cleaning structure based on a miniature electromagnetic turbine and a self-cleaning method.The self-spinning lens cleaning structure comprises a magnetic driving ring and an electromagnetic turbine ring, and the magnetic driving ring is located in the electromagnetic turbine ring; and the outer arc surface of the magnetic driving ring is rotationally connected with the inner wall of the electromagnetic turbine ring. According to the self-spinning cleaning lens structure based on the miniature electromagnetic turbine and the self-cleaning method, non-contact driving of the rotating lens is achieved through the electromagnetic turbine, complex structures such as a traditional motor, a traditional gear and a traditional bearing are omitted, the system size and the mechanical abrasion risk are effectively reduced, and the self-spinning cleaning lens structure is suitable for miniaturized or closed lens equipment; the rotating lens generates strong centrifugal force when rotating at a high speed of 1000-4000 rpm, pollutants such as raindrops, greasy dirt and dust particles on the mirror surface can be efficiently thrown away, the cleaning efficiency is improved by combining a hydrophobic / oleophobic coating, and consumable-free and rapid cleaning is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lens cleaning, and in particular to a self-spinning cleaning lens structure and a self-cleaning method based on a micro electromagnetic turbine. Background Art

[0002] With the development of technologies such as in-vehicle driver assistance systems, drones, security surveillance, and intelligent robots, the requirements for lens cleanliness and image quality in various outdoor imaging devices are constantly increasing. In actual use, camera lenses often become blurred due to attachments such as rain, dust, and oil, leading to recognition failures, affecting system stability and even posing safety risks.

[0003] Existing lens cleaning methods mainly include: 1. Manual cleaning: such as wiping, blowing, and spraying, which rely on human operation, have low efficiency and limited frequency; 2. Scraping and brushing mechanism: Use brushes or scraping arms to remove mirror dirt, which has problems such as mechanical wear, complex structure, and large size; 3. Liquid spray + air flow system: integrated cleaning liquid nozzle and compressed air system, suitable for some high-end vehicle-mounted equipment, but with high cost, many consumables, and large structural space requirements; 4. Rotating lens structure: Some products use motors to drive the lens to rotate to remove dirt, but generally use traditional gears or shaft transmission methods, which have defects such as poor sealing, dust accumulation and jamming, and easy wear, and are not suitable for miniaturized and closed lens systems.

[0004] In summary, existing lens cleaning devices have significant shortcomings in terms of compactness, drive mode, durability, and intelligent response. This is particularly true in small devices or enclosed environments, where it is difficult to achieve a balanced cleaning efficiency and service life. Therefore, a self-spinning lens cleaning structure and method based on a micro-electromagnetic turbine are needed. Summary of the Invention

[0005] Based on the existing technical problems, the present invention proposes a self-spinning cleaning lens structure and a self-cleaning method based on a micro electromagnetic turbine.

[0006] The present invention proposes a spin-cleaning lens structure based on a micro electromagnetic turbine, which includes a magnetic drive ring and an electromagnetic turbine ring. The magnetic drive ring is located inside the electromagnetic turbine ring, and the outer arc surface of the magnetic drive ring is rotatably connected to the inner wall of the electromagnetic turbine ring. A lens rotating seat is installed on the inner wall of the magnetic drive ring, and a T-shaped glass is installed on the left end of the lens rotating seat.

[0007] A protrusion is provided inside the electromagnetic turbine ring, and a plurality of the protrusions are equally distributed in a ring shape inside the electromagnetic turbine ring. An electromagnetic coil is sleeved and installed on the surface of the protrusion, and the plurality of electromagnetic coils are located outside the magnetic drive ring.

[0008] Preferably, a rotating bearing is installed on the outer arc surface of the right end of the lens rotating seat, and a rear cover is installed on the outer ring of the rotating bearing. A snap-fit ​​sealing groove is opened on the right end surface of the electromagnetic turbine ring, and a rear cover sealing ring is installed on the inner side wall of the snap-fit ​​sealing groove. The surface of the rear cover sealing ring is in extrusion contact with the convex ring surface at the left end of the rear cover, and the convex ring surface at the left end of the rear cover is also rotatably connected to the inner wall of the snap-fit ​​sealing groove.

[0009] Preferably, a transfer sealing groove is provided on the left end surface of the electromagnetic turbine ring, and a first front cover sealing ring is installed on the inner wall of the transfer sealing groove. The left end surface of the lens rotating seat and the left end surface of the T-shaped glass are both rotatably connected to the front cover sealing plate, and an extrusion sealing groove is provided on the surface of the front cover sealing plate, and a second front cover sealing ring is installed on the inner wall of the extrusion sealing groove.

[0010] Preferably, the surface of the second front cover sealing ring is squeezed and sealed with the left end surface of the lens rotating seat, the upper convex ring surface of the right end of the front cover sealing plate is rotatably connected with the inner wall of the adapter sealing groove, and the upper convex ring surface of the right end of the front cover sealing plate is also squeezed and sealed with the surface of the first front cover sealing ring.

[0011] The present invention proposes a self-cleaning method for a spin-cleaning lens structure based on a micro electromagnetic turbine, comprising the following steps: Step 1: Build a magnetic induction rotation system; Step 2: Trigger cleaning mode; Step 3: Centrifugal cleaning is performed; Step 4: Terminate and reset; Step 5: Environmental adaptation and intelligent control.

[0012] Preferably, the magnetic induction rotation system in step one includes: first setting up at least 3 groups of electromagnetic coil assemblies, which are distributed in a ring shape around the inside of the lens housing to form a changing circumferential magnetic field; then embedding magnetic material in the magnetic drive ring to form a rotating assembly that can be affected by magnetic force; finally, controlling the electromagnetic coils to be excited in a set sequence through a microcontroller to form a continuously rotating magnetic field, driving the lens rotating seat to rotate around the axis direction.

[0013] Preferably, triggering the cleaning mode in step 2 includes: through an external sensor or timing logic, the external sensor uses image blur detection and raindrop sensor to determine whether there are water droplets, dust or oil on the lens surface; if it is determined that the cleaning conditions are met, the control module starts the cleaning process and provides a pulse excitation signal to the electromagnetic coil; the lens assembly generates a rotational torque under the action of the magnetic field and enters the cleaning state.

[0014] Preferably, the centrifugal rotation cleaning in step three includes: the lens assembly is driven to rotate to a set speed range of 1000-4000rpm to form a strong centrifugal field; the liquid, dust particles, etc. on the mirror surface are thrown off the lens surface under the action of centrifugal force; a hydrophobic or oleophobic coating is provided on the lens surface, so that the liquid adhesion is significantly reduced and the cleaning efficiency is further improved.

[0015] Preferably, the termination and resetting in step 4 include: stopping electromagnetic excitation after reaching the set cleaning time or detecting the cleaning completion mark; the lens assembly gradually stops rotating under the action of inertia and enters a static state; setting a magnetic limit or flexible damping device so that the lens can automatically return to its original position and maintain the original optical alignment.

[0016] Preferably, the environmental adaptation and intelligent control in step five include: the system adjusts the cleaning frequency and rotation parameters according to different usage scenarios; the control system supports remote instructions, environmental linkage or AI image recognition algorithm to trigger the cleaning process; and the cleaning status, operation frequency and other data are uploaded to the host computer or cloud platform through the communication interface.

[0017] The beneficial effects of the present invention are: The electromagnetic turbine is used to achieve contactless drive of the rotating lens, eliminating the complex structures of traditional motors, gears, bearings, etc., effectively reducing the system volume and the risk of mechanical wear, and is suitable for miniaturized or enclosed lens equipment; The rotating mirror generates strong centrifugal force at high speeds of 1000-4000rpm, which can effectively remove raindrops, oil stains, dust particles and other pollutants on the mirror surface. Combined with the hydrophobic / oleophobic coating, it improves cleaning efficiency and achieves consumable-free and fast cleaning. Supports multiple control methods, including timing control, image blur detection trigger, environmental sensor raindrop, and lighting linkage control. It can automatically respond to actual environmental changes, reduce human intervention, and enhance the intelligence level of the system. The sealing structure of the present invention, including a flexible sealing ring and a sealing groove, can effectively prevent water vapor and dust from penetrating into the interior of the lens, thereby improving the operating stability and life of the device in complex environments such as high humidity, high dust, and high-pressure water impact; The rotating lens and bracket adopt a modular design, which is easy to disassemble and replace. The electromagnetic drive module can adapt to a variety of lens sizes and structures. It is suitable for various application scenarios such as vehicle-mounted cameras, drone vision modules, industrial cameras, outdoor security monitoring, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of a spin-cleaning lens structure based on a micro electromagnetic turbine; Figure 2 A cross-sectional view of an electromagnetic turbine ring structure of a spin-cleaning lens structure based on a micro-electromagnetic turbine; Figure 3 This is an exploded schematic diagram of a spin-cleaning lens structure based on a micro electromagnetic turbine; Figure 4 This is a performance analysis diagram of an image cleaning system based on a self-cleaning method of a micro-electromagnetic turbine-based spin-cleaning lens structure; Figure 5 The scenario setting and key parameter diagram of a self-cleaning method for a spin-cleaning lens structure based on a micro electromagnetic turbine; Figure 6 A comparison chart of the cleaning efficiency of a self-cleaning method for a spin-cleaning lens structure based on a micro-electromagnetic turbine; Figure 7 A timing chart of a cleaning termination process of a self-cleaning method for a self-spin cleaning lens structure based on a micro electromagnetic turbine; Figure 8 The figure is a schematic diagram of the cleaning operation state of a self-cleaning method for a spin-cleaning lens structure based on a micro electromagnetic turbine.

[0019] In the figure: 1. Magnetic drive ring; 2. Electromagnetic turbine ring; 3. Lens rotating seat; 4. T-shaped glass; 5. Protrusion; 6. Electromagnetic coil; 7. Rotary bearing; 8. Rear cover; 9. Snap-fit ​​sealing groove; 10. Rear cover sealing ring; 11. Adapter sealing groove; 12. First front cover sealing ring; 13. Front cover sealing plate; 14. Extrusion sealing groove; 15. Second front cover sealing ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1 Reference Figure 1-Figure 3 A spin-cleaning lens structure based on a micro electromagnetic turbine includes a magnetic driving ring 1 and an electromagnetic turbine ring 2. The magnetic driving ring 1 is located inside the electromagnetic turbine ring 2, and the outer arc surface of the magnetic driving ring 1 is rotatably connected to the inner wall of the electromagnetic turbine ring 2. A lens rotating seat 3 is installed on the inner wall of the magnetic driving ring 1, and a T-shaped glass 4 is installed on the left end of the lens rotating seat 3.

[0022] A rotating bearing 7 is installed on the outer arc surface of the right end of the lens rotating seat 3, and a rear cover 8 is installed on the outer ring of the rotating bearing 7. A snap-fit ​​sealing groove 9 is opened on the right end surface of the electromagnetic turbine ring 2, and a rear cover sealing ring 10 is installed on the inner side wall of the snap-fit ​​sealing groove 9. The surface of the rear cover sealing ring 10 is in extrusion contact with the convex ring surface of the left end of the rear cover 8, and the convex ring surface of the left end of the rear cover 8 is also rotatably connected to the inner wall of the snap-fit ​​sealing groove 9.

[0023] A protrusion 5 is provided inside the electromagnetic turbine ring 2, and multiple protrusions 5 are equally distributed in a ring shape inside the electromagnetic turbine ring 2. An electromagnetic coil 6 is installed on the surface of the protrusion 5, and multiple electromagnetic coils 6 are located outside the magnetic drive ring 1.

[0024] The left end surface of the electromagnetic turbine ring 2 is provided with a transfer sealing groove 11, and the inner wall of the transfer sealing groove 11 is installed with a first front cover sealing ring 12. The left end surface of the lens rotating seat 3 and the left end surface of the T-shaped glass 4 are both rotatably connected to a front cover sealing plate 13. The surface of the front cover sealing plate 13 is provided with an extrusion sealing groove 14, and the inner wall of the extrusion sealing groove 14 is installed with a second front cover sealing ring 15.

[0025] The surface of the second front cover sealing ring 15 is squeezed and sealed with the left end surface of the lens rotating seat 3, the upper convex ring surface of the right end of the front cover sealing plate 13 is rotatably connected with the inner wall of the adapter sealing groove 11, and the upper convex ring surface of the right end of the front cover sealing plate 13 is also squeezed and sealed with the surface of the first front cover sealing ring 12.

[0026] Example 2 Reference Figure 4-Figure 8 A self-cleaning method for a spin-cleaning lens structure based on a micro electromagnetic turbine comprises the following steps: Step 1: Build a magnetic induction rotation system; The magnetic induction rotation system in step 1 includes: first, setting up at least three sets of electromagnetic coils 6, distributed in a ring around the interior of the lens housing, to form a variable circumferential magnetic field; then, embedding magnetic material in the magnetic drive ring 1 to form a rotating assembly that can be affected by magnetic force; finally, controlling the electromagnetic coils 6 to be excited in a set sequence by a microcontroller, forming a continuously rotating magnetic field, driving the lens rotating base 3 to rotate about its axis; The rotating mirror magnetic induction system is based on three sets of electromagnetic coils and six arrays, and also includes: a1. Scenario Setting and Parameter Assumptions: Simplified system model: Three sets of electromagnetic coils 6 are installed on the inner wall of the lens housing, arranged at equal intervals of 120° along the circumference; a NdFeB permanent magnet is installed in the magnetic drive ring 1; the permanent magnet is magnetized in the radial direction; the total mass of the T-shaped glass 4 is m = 8.5g, and the radius r = 20mm; the drive frequency is set to 60Hz; The microcontroller MCU controls the coil to energize in the order of A→B→C→A, and each time lasts , forming a "clockwise" torque pulse, each set of electromagnetic coils 6 rated current , number of turns , core radius 5mm; a2. Step calculation and estimation: The magnetic field generated by electromagnetic induction is calculated as follows: ,in is the vacuum permeability constant, which is , that is, when the electromagnetic coil 6 is excited, a magnetic induction intensity of about 12.1mT can be formed on the axis of the magnetic core; The driving torque of the permanent magnet is estimated by the following formula: ,in, ; , ; ; Estimation of angular acceleration of rotating lens: moment of inertia: Angular acceleration: ; Speed ​​estimation: .

[0027] In practice, due to friction, air resistance and hysteresis loss, the steady-state speed will be in the range of 3000-5000rpm, but the system has the ability to spin quickly; by alternately energizing and driving three sets of coils, combined with an embedded permanent magnet ring, the lens assembly can reach a rotation speed of 3000+rpm within 0.1 seconds, achieving efficient cleaning under strong centrifugal force.

[0028] Step 2: Trigger cleaning mode; Triggering the cleaning mode in step 2 includes: through external sensors or timing logic, the external sensor uses image blur detection and raindrop sensors to determine whether there are water droplets, dust or oil on the lens surface; if it is determined that the cleaning conditions are met, the control module starts the cleaning process and provides a pulse excitation signal to the electromagnetic coil 6; the lens assembly generates a rotational torque under the action of the magnetic field and enters the cleaning state.

[0029] Specific examples of triggered cleaning mode: Spin lens cleaning process triggered by image blur detection; Scenario setup; Assume the following target system parameters: Lens model: a 720p automotive wide-angle camera; Image sensor: supports 30 frames per second; Control system image acquisition frequency: 1 frame / 0.1 second; Image blur detection algorithm: uses Laplace variance Var as the clarity indicator; Clarity threshold setting: Var < 120 is considered blurry; Environmental simulation: Raindrops remain on the mirror surface, causing partial blur in the image, and Var drops to 65; Controller chip: STM32, ARM, or Huawei HiSilicon microcontroller; Electromagnetic turbine response delay: 5ms; Cleaning mode operation time: 150ms. Specific steps and operation process; b1. Image blur detection triggers cleaning judgment; Current image Var = 65 < threshold 120 → Trigger cleaning condition; the control module continuously detects 3 frames for 0.3 seconds and confirms that the blur is continuous pollution rather than occasional jitter; the cleaning logic determines "perform one cleaning action"; b2. Start the electromagnetic turbine cleaning process; The control module sends continuous pulse drive signals to the three groups of coil arrays; each group of coils works for t = 5.5ms; the excitation is rotated: A → B → C → A; the total cleaning cycle is set to 3 complete cycles ≈ 3 × 3 × 5.5ms = 49.5ms; b3. Rotate the lens to achieve effective cleaning state; The lens speed can reach >3000rpm within 100ms; after maintaining high-speed rotation for 100ms, the soft stop mechanism is executed and the coil is no longer excited; the total time for cleaning the window is approximately: detection 0.3s + drive control 0.05s + stable cleaning 0.1s = a complete cleaning within 0.45 seconds; the performance results of the image cleaning system are analyzed as follows Figure 4 shown.

[0030] Step 3: Centrifugal cleaning is performed; The centrifugal rotation cleaning in step three includes: the lens assembly is driven to rotate to a set speed range of 1000-4000rpm, forming a strong centrifugal field; liquid, dust particles, etc. on the mirror surface are thrown off the lens surface under the action of centrifugal force; a hydrophobic or oleophobic coating is provided on the lens surface, which significantly reduces liquid adhesion and further improves cleaning efficiency.

[0031] Estimation of the cleaning power of a rotating lens against water droplets and dust particles at 4000 rpm; like Figure 5 Scenario settings and key parameter assumptions shown; c1. Calculation of centrifugal acceleration; The formula for centrifugal force is: ;in is the lens rotation radius, set to 0.02m; is the lens rotation speed, set to 4000 rpm (rotations per minute), converted to 418.88 rad / s (radians per second); is the droplet mass, set to 0.5 mg ( ); c2. Compare adhesion and centrifugal force; the formula for droplet adhesion is: ; The formula for centrifugal force is: ; It turns out that: ; c3. Quantification of the improvement of the hydrophobic coating effect; After the hydrophobic coating, the contact angle increases → the adhesion decreases → the actual critical centrifugal acceleration decreases; ; This formula is a calculation process of surface energy ratio and adhesion estimation, where is the surface energy of the uncoated (bare) surface, is the surface energy of the coated surface, is the adhesion of the coating surface; Compare again: ; After using the hydrophobic coating, droplets are easier to throw out, and the cleaning efficiency is increased by more than 4 times; Cleaning efficiency conclusion: Figure 6 As shown, the cleaning efficiency conclusion is compared between uncoated and hydrophobic coating; Dust particle expansion analysis; dust mass estimation: ; Particle adsorption force (electrostatic + microstructure): ; Centrifugal force: ; Structure: Centrifugal force is still far greater than adhesive force, so dust particles can also be removed. At a speed of 3000-4000rpm, the rotating lens can effectively remove droplets and dust through centrifugal force. The hydrophobic / oleophobic coating will further significantly improve cleaning efficiency. In actual operation, a cleaning cycle takes only 50-150ms, which can quickly restore lens clarity and is suitable for continuous high-frequency operation scenarios. Step 4: Terminate and reset; The termination and reset in step 4 include: stopping electromagnetic excitation after reaching the set cleaning time or detecting the cleaning completion mark; the lens assembly gradually stops rotating under the action of inertia and enters a static state; setting a magnetic limit or flexible damping device so that the lens can automatically return to its original position and maintain the original optical alignment.

[0032] The natural stop and magnetic limit return after the spin lens cleaning task is completed, such as the automatic return mechanism: magnetic limit slot adsorption correction estimation; The system is equipped with permanent magnetic adsorption positioning sites such as weak NdFeB alignment magnets; after the lens assembly stops, the angular velocity is extremely low <5rad / s, entering the magnetic guidance adsorption range; three equidistant magnetic limit adsorption areas of 120° are set in each circle, and the adsorption range is about ±10°; when the residual rotation angle of the lens enters the magnetic field, the magnetic torque generates a guiding torque; which is greater than the static resistance torque and can drive the rotating bracket to rotate slightly to complete the return, usually taking <300ms; if a circle of silicone / TPU elastic limit ring is designed: the lens will deform slightly after contact to absorb kinetic energy; provide micro-damping stable support at the final static position; prevent eccentric imaging due to vibration or deflection; such as Figure 7 The cleaning termination process timing chart shown; Summary and actual results: Without additional drive, the lens can naturally stop and complete automatic return within 4 seconds. The combination of magnetic limit + elastic adsorption structure ensures that the end position of the lens is consistent with the initial optical center. No external sensor is required to achieve low-cost, high-precision return operation. Step 5: Environmental adaptation and intelligent control; Environmental adaptation and intelligent control in step five include: the system adjusts the cleaning frequency and rotation parameters according to different usage scenarios; the control system supports remote commands, environmental linkage or AI image recognition algorithms to trigger the cleaning process; and the cleaning status, operation frequency and other data are uploaded to the host computer or cloud platform through the communication interface.

[0033] The electromagnetic turbine is used to achieve contactless drive of the rotating lens, eliminating the complex structures of traditional motors, gears, bearings, etc., effectively reducing the system volume and the risk of mechanical wear, and is suitable for miniaturized or enclosed lens equipment; The rotating mirror generates strong centrifugal force at high speeds of 1000-4000rpm, which can effectively remove raindrops, oil stains, dust particles and other pollutants on the mirror surface. Combined with the hydrophobic / oleophobic coating, it improves cleaning efficiency and achieves consumable-free and fast cleaning. Supports multiple control methods, including timing control, image blur detection trigger, environmental sensor raindrop, and lighting linkage control. It can automatically respond to actual environmental changes, reduce human intervention, and enhance the intelligence level of the system. The sealing structure of the present invention, including a flexible sealing ring and a sealing groove, can effectively prevent water vapor and dust from penetrating into the interior of the lens, thereby improving the operating stability and life of the device in complex environments such as high humidity, high dust, and high-pressure water impact; The rotating lens and bracket adopt a modular design, which is easy to disassemble and replace. The electromagnetic drive module can adapt to a variety of lens sizes and structures. It is suitable for various application scenarios such as vehicle-mounted cameras, drone vision modules, industrial cameras, outdoor security monitoring, etc.

[0034] It is used in forward-facing cameras, surround-view cameras, side blind spot cameras and other parts of intelligent connected cars and autonomous driving systems to achieve automatic lens cleaning and image stability in rainy and snowy environments; it is integrated into drone gimbal cameras, monitoring flight platforms, and unmanned helicopter vision systems to effectively improve image acquisition clarity and task completion efficiency under complex climatic conditions; it is used in outdoor surveillance cameras on highways, urban roads, ports, factory areas, mining areas, etc. to ensure long-term clean operation of lenses in all-weather, unmanned conditions; it is configured in machine vision equipment, robot vision modules, intelligent detection terminals and other occasions on industrial production lines to effectively reduce the impact of lens contamination on detection accuracy and improve system stability; it is used in optical imaging equipment in harsh or highly corrosive environments such as ship monitoring, offshore wind power inspection, underwater robots, desert / ice and snow monitoring; it can be further expanded to smart doorbells, smart cat eyes, robot head cameras and other products according to the requirements of structural miniaturization and low power consumption, to realize the automatic lens decontamination function of portable terminals.

[0035] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A spin-cleaning lens structure based on a micro electromagnetic turbine, comprising a magnetic drive ring (1) and an electromagnetic turbine ring (2), characterized in that: The magnetic drive ring (1) is located inside the electromagnetic turbine ring (2), and the outer arc surface of the magnetic drive ring (1) is rotatably connected to the inner wall of the electromagnetic turbine ring (2). A lens rotating seat (3) is installed on the inner wall of the magnetic drive ring (1), and a T-shaped glass (4) is installed on the left end of the lens rotating seat (3); A protrusion (5) is provided inside the electromagnetic turbine ring (2), and a plurality of the protrusions (5) are equally distributed in a ring shape inside the electromagnetic turbine ring (2); an electromagnetic coil (6) is sleeved and mounted on the surface of the protrusion (5), and the plurality of the electromagnetic coils (6) are located outside the magnetic drive ring (1).

2. The micro-electromagnetic turbine-based spin-cleaning lens structure according to claim 1, characterized in that: A rotary bearing (7) is mounted on the outer arc surface of the right end of the lens rotating seat (3), and a rear cover (8) is mounted on the outer ring of the rotary bearing (7). A snap-fit ​​sealing groove (9) is provided on the right end surface of the electromagnetic turbine ring (2), and a rear cover sealing ring (10) is mounted on the inner side wall of the snap-fit ​​sealing groove (9). The surface of the rear cover sealing ring (10) is in compression contact with the convex ring surface of the left end of the rear cover (8), and the convex ring surface of the left end of the rear cover (8) is also rotatably connected to the inner wall of the snap-fit ​​sealing groove (9).

3. The micro electromagnetic turbine-based spin cleaning lens structure according to claim 2, characterized in that: The left end surface of the electromagnetic turbine ring (2) is provided with a transition sealing groove (11), and the inner wall of the transition sealing groove (11) is installed with a first front cover sealing ring (12). The left end surface of the lens rotating seat (3) and the left end surface of the T-shaped glass (4) are both rotatably connected to a front cover sealing plate (13), and the surface of the front cover sealing plate (13) is provided with an extrusion sealing groove (14), and the inner wall of the extrusion sealing groove (14) is installed with a second front cover sealing ring (15).

4. The micro electromagnetic turbine-based spin cleaning lens structure according to claim 3, characterized in that: The surface of the second front cover sealing ring (15) is squeezed and sealed with the left end surface of the lens rotating seat (3), the upper convex ring surface of the right end of the front cover sealing plate (13) is rotatably connected with the inner wall of the transition sealing groove (11), and the upper convex ring surface of the right end of the front cover sealing plate (13) is also squeezed and sealed with the surface of the first front cover sealing ring (12).

5. The self-cleaning method of a lens structure based on a micro electromagnetic turbine spin cleaning method according to claim 4, characterized in that: The following steps are involved: Step 1: Build a magnetic induction rotation system; Step 2: Trigger cleaning mode; Step 3: Centrifugal cleaning is performed; Step 4: Terminate and reset; Step 5: Environmental adaptation and intelligent control.

6. The self-cleaning method of a lens structure based on a micro electromagnetic turbine spin cleaning method according to claim 5, characterized in that: The magnetic induction rotation system in step 1 comprises: firstly arranging at least three groups of electromagnetic coil (6) components, which are distributed in a ring shape around the interior of the lens housing to form a variable circumferential magnetic field; then embedding magnetic material in the magnetic drive ring (1) to form a rotating component that can be acted upon by magnetic force; finally, controlling the electromagnetic coil (6) to be excited in a set sequence by a microcontroller to form a continuously rotating magnetic field, thereby driving the lens rotating seat (3) to rotate around the axis.

7. The self-cleaning method of a lens structure based on a micro electromagnetic turbine spin cleaning method according to claim 5, characterized in that: Triggering the cleaning mode in step 2 includes: using an external sensor or timing logic, the external sensor uses image blur detection and a raindrop sensor to determine whether there are water droplets, dust or oil on the lens surface; if it is determined that the cleaning conditions are met, the control module starts the cleaning process and provides a pulse excitation signal to the electromagnetic coil (6); the lens assembly generates a rotational torque under the action of the magnetic field and enters the cleaning state.

8. The self-cleaning method of a lens structure based on a micro electromagnetic turbine spin cleaning method according to claim 5, characterized in that: The centrifugal rotation cleaning in step three includes: the lens assembly is driven to rotate to a set speed range of 1000-4000rpm to form a strong centrifugal field; liquid, dust particles, etc. on the mirror surface are thrown off the lens surface under the action of centrifugal force; a hydrophobic or oleophobic coating is provided on the lens surface, which significantly reduces liquid adhesion and further improves cleaning efficiency.

9. The self-cleaning method of a lens structure based on a micro electromagnetic turbine spin cleaning method according to claim 5, characterized in that: The termination and resetting in step 4 include: stopping electromagnetic excitation after reaching the set cleaning time or detecting the cleaning completion mark; the lens assembly gradually stops rotating under the action of inertia and enters a static state; setting a magnetic limit or flexible damping device so that the lens can automatically return to its original position and maintain the original optical alignment.

10. The self-cleaning method of a lens structure based on a micro electromagnetic turbine spin cleaning method according to claim 5, characterized in that: The environmental adaptation and intelligent control in step five include: the system adjusts the cleaning frequency and rotation parameters according to different usage scenarios; the control system supports remote commands, environmental linkage or AI image recognition algorithm to trigger the cleaning process; and the cleaning status, operation frequency and other data are uploaded to the host computer or cloud platform through the communication interface.

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