Lens device with rotary zooming function

Abstract

The invention discloses a lens device with a rotary zooming function, and particularly relates to the technical field of optics, the lens device comprises a wrist strap, the front end of the wrist strap is fixedly connected with a loading assembly, the front end of the loading assembly is rotatably connected with a rotating assembly, and the front end of the loading assembly is fixedly connected with a distance adjusting assembly. And an inner cavity of the loading assembly is slidably connected with a cleaning assembly. According to the lens device with the rotary zooming function, the two sliding columns are arranged to be matched with the two convex threads, so that the device can be rotationally adjusted, and furthermore, in the matching process of the two sliding columns and the two convex threads, the lens device can be rotationally adjusted; according to the distance adjusting device, the positioning blocks are arranged to be matched with the corresponding positioning grooves, so that positioning can be carried out in the distance adjusting process, the stability of a shot picture can be kept, and the situation that the picture is blurred due to hand shaking or slight movement when long-distance shooting is carried out is further avoided.

Description

Technical Field

[0001] The invention relates to the field of optical technology, and in particular to a lens device with a rotational zooming function. Background Art

[0002] With the continuous development of optical technology, lens devices are increasingly used in the fields of imaging, photography, videography and monitoring. Traditional lens devices often rely on complex mechanical structures or electronic drive systems for zoom functions, and have limitations such as large size, high cost and slow response speed. Therefore, it is an urgent need in the industry to develop a lens device with simple structure, convenient operation and significant zoom effect.

[0003] Chinese patent document publication number CN105258039B discloses a multifunctional zoom lamp device, including a multifunctional kit and a zoom lamp module; the zoom lamp module includes a lamp housing, a light source, a heat sink, a front cover and a lens, the light source is fixed on the heat sink, the lamp housing is fixed on the heat sink, the lens is fixed on the front cover, and the front cover is connected to the lamp housing; the front cover is a rotating ring and a movable ring of an annular structure, the rotating ring is limited in the lamp housing by a limiting structure, the side wall of the rotating ring is provided with an array of rotating grooves, the movable ring is placed inside the rotating ring, and the side wall of the movable ring is provided with several guide columns matched with the rotating grooves; the multifunctional kit includes a multifunctional housing, a power module, a Bluetooth module and a speaker. The multifunctional zoom lamp device proposed by the above invention has a simple structure, is easy to assemble, has diversified functions, and is applied to the lighting industry, but the above patent still has the following problems: Although the above device can be zoomed during use, it is easy to cause re-zooming if it encounters friction or accidental contact during the zooming process, which can easily affect the visual effect. In addition, if the above device is used for too long, it may cause the device itself to become hot, resulting in a decrease in performance and an increase in the cost of its maintenance or replacement. Summary of the invention

[0004] The main purpose of the present invention is to provide a lens device with a rotational zoom function, which can effectively solve the problem of focal length change caused by friction or accidental collision and the failure to dissipate heat for the power supply device in time.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A lens device with a rotational zoom function comprises a wristband, wherein the front end of the wristband is fixedly connected to a loading assembly, the front end of the loading assembly is rotatably connected to a rotating assembly, the front end of the loading assembly is fixedly connected to a distance adjustment assembly, and the inner cavity of the loading assembly is slidably connected to a cleaning assembly.

[0006] Preferably, the distance adjustment component includes a mating component 1, a mating component 2 is slidably connected to the outer surface of the mating component 1, a fixed lens ring is threadedly connected to the right side of the outer surface of the mating component 2, and an observation lens 2 is tightly attached to the left side of the inner cavity of the fixed lens ring.

[0007] Preferably, the second mating component includes a rotating shell, a convex thread is provided on the right side of the outer surface of the rotating shell, two track grooves are provided on the inner surface of the rotating shell, a plurality of positioning blocks are slidably connected to the left part of the inner surface of the rotating shell, and a plurality of positioning blocks are fixedly connected to springs on the sides away from each other.

[0008] Preferably, the mating component 1 includes a fixed shell, a plurality of positioning grooves are provided on the outer surface of the fixed shell, two symmetrically arranged sliding columns are fixedly connected to the outer surface of the fixed shell, an observation lens 1 is fixedly connected to the left end of the inner surface of the fixed shell, and the two sliding columns are respectively matched with two corresponding convex threads.

[0009] Preferably, the rotating assembly includes two fixed blocks, the rear sides of the two fixed blocks are fixedly connected to the front end of the loading assembly, the sides of the two fixed blocks close to each other are rotatably connected to the outer shell 2, and the inner surface of the outer shell 2 is fixedly connected to the display touch screen.

[0010] Preferably, the loading assembly comprises a shell one, an isolation plate is fixedly connected to the bottom of the inner cavity of the shell one, a slide rail is provided at the bottom end of the isolation plate, and the slide rail is slidably connected to the cleaning assembly.

[0011] Preferably, the cleaning component includes a battery, a heat dissipation aluminum sheet is fixedly connected to the left end of the battery, a dust removal component is tightly attached to the left side of the heat dissipation aluminum sheet, and the outer surface of the dust removal component and the outer surface of the heat dissipation component are commonly wound and connected with a belt.

[0012] Preferably, the dust removal assembly includes a micro motor, the upper part of the micro motor is fixedly connected to the rear side of the bottom of the isolation plate, the output end of the micro motor is fixedly connected to a bidirectional threaded rod through a coupling, a matching column is fixedly connected to the left side of the outer surface of the bidirectional threaded rod, and a dust removal brush is threadedly connected to the right side of the outer surface of the bidirectional threaded rod.

[0013] Preferably, the heat dissipation assembly includes two fixed plates, the two fixed plates are rotatably connected to a rotating column, a power wheel is fixedly connected to the middle of the outer surface of the rotating column, the outer surface of the power wheel and the outer surface of the matching column are commonly wound and connected with a belt, and a heat dissipation fan is fixedly connected to the left side of the rotating column.

[0014] In addition, the present invention also provides a method for using a lens device with a rotational zoom function, the method comprising: a: During use, the operator first needs to insert his right hand through the wristband and clamp it with his thumb, then rotate the display touch screen to open it, and then rotate the rotating shell. When the rotating shell rotates, it cooperates with two symmetrically arranged sliding columns to achieve rotation adjustment; b: During the distance adjustment process, hold the housing 1 to ensure that your hand is stable. When the housing is rotated and extended, preliminarily adjust the distance between the observation lens 2 and the object to be observed. Then, the distance is adjusted by the cooperation of the positioning block and the positioning groove. When the image or target begins to become clear, release the grip; c: Turn on the display touch screen. When the display touch screen is turned on, the micro motor will be driven to rotate through the internal circuit, thereby driving the dust removal brush to clean the surface of the heat dissipation aluminum sheet. Furthermore, while the micro motor is rotating, the heat dissipation fan can be driven to rotate through the power wheel to dissipate heat from the battery.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting two sliding posts to cooperate with two convex threads, the device can be rotated and adjusted. Further, in the process of the two sliding posts cooperating with the two convex threads, a plurality of positioning blocks are set to cooperate with a plurality of corresponding positioning grooves, so that positioning can be achieved during the distance adjustment process, which helps to maintain the stability of the shooting picture and further avoid blurring of the picture due to hand shaking or slight movement when shooting at a long distance.

[0016] 2. By setting a bidirectional threaded rod and a dust removal brush to cooperate, the bidirectional threads on the surface of the bidirectional threaded rod 533 allow the dust removal brush to continuously clean the surface of the heat sink aluminum fin, thereby preventing the dust and impurities accumulated on the surface of the heat sink aluminum fin from clogging the tiny pores on the heat sink and reducing the heat dissipation efficiency.

[0017] 3. By setting the matching column, the rotating column can be driven to rotate through the belt when it rotates, so as to dissipate the heat of the inner cavity where the battery is located, thereby ensuring that the camera can operate stably in a high temperature environment to avoid performance degradation or failure due to overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the rotating assembly of the present invention; Figure 4 An exploded view of the overall structure of the distance adjustment assembly of the present invention; Figure 5 It is a schematic diagram of the overall structure of the second matching component of the present invention; Figure 6 It is a cross-sectional view of the overall structure of the second matching component of the present invention; Figure 7 It is a schematic diagram of the overall structure of the matching component of the present invention; Figure 8 It is a partial structural cross-sectional view of the loading assembly of the present invention; Fig. 9 It is a schematic diagram of the overall structure of the dust removal component of the present invention; Fig.10 It is a schematic diagram of the overall structure of the heat dissipation assembly of the present invention.

[0019] In the figure: 1. wristband; 2. loading component; 21. shell 1; 22. isolation plate; 23. slide rail; 3. distance adjustment component; 31. matching component 1; 311. fixed shell; 312. positioning groove; 313. sliding column; 314. observation lens 1; 32. observation lens 2; 33. matching component 2; 331. rotating shell; 332. convex thread; 333. track groove; 334. positioning block; 335. spring; 34. fixed lens ring; 4. rotating component; 41. fixed block; 42. shell 2; 43. display touch screen; 5. cleaning component; 51. battery; 52. heat dissipation aluminum sheet; 53. dust removal component; 531. micro motor; 532. matching column; 533. two-way threaded rod; 534. dust removal brush; 54. heat dissipation component; 541. fixed plate; 542. rotating column; 543. power wheel; 544. cooling fan. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] Embodiment 1 See also Figure 1 and Figure 2 As shown, a lens device with a rotational zoom function includes a wristband 1, a loading component 2 is fixedly connected to the front end of the wristband 1, a rotating component 4 is rotatably connected to the front end of the loading component 2, a distance adjustment component 3 is fixedly connected to the front end of the loading component 2, and a cleaning component 5 is slidably connected to the inner cavity of the loading component 2.

[0022] First, when the operator is using this device, please insert the palm and limbs into the inner cavity of the wristband 1, so that the thumb is pressed on the bottom of the outer surface of the loading component 2, and further open the rotating component 4. When the rotating component 4 is started, the distance adjustment component 3 can be rotated to position and focus it. At this time, the operator can observe and slightly adjust the target imaging through the rotating component 4. Further, when the operator starts the rotating component 4 of the device, the power source inside the cleaning component 5 of the device can be started through the internal circuit. When the power source inside the cleaning component 5 is started, the surface heat dissipation device of the power supply device in the inner cavity of the loading component 2 can be continuously cleaned. By removing the oxide layer and harmful substances, the aging of the power supply device is reduced, thereby extending the service life of the power supply device. Further, while cleaning, the internal components can cooperate to dissipate the heat of the internal power supply device.

[0023] Furthermore, in order to achieve the above-mentioned purpose of positioning the two convex mirrors while adjusting their distances; like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the rotating assembly 4 includes two fixed blocks 41, the rear sides of the two fixed blocks 41 are fixedly connected to the front end of the loading assembly 2, the two fixed blocks 41 are rotatably connected to the shell 2 42 on one side close to each other, and the inner surface of the shell 2 42 is fixedly connected to the display touch screen 43, the distance adjustment assembly 3 includes a matching assembly 1 31, the outer surface of the matching assembly 1 31 is slidably connected to the matching assembly 2 33, the right side of the outer surface of the matching assembly 2 33 is threadedly connected to the fixed lens ring 34, the left side of the inner cavity of the fixed lens ring 34 is tightly attached to the observation lens 2 32, the matching assembly 2 33 includes a rotating shell 331, and the right side of the outer surface of the rotating shell 331 is provided There is a convex thread 332, and two track grooves 333 are provided on the inner surface of the rotating shell 331. A plurality of positioning blocks 334 are slidably connected to the left part of the inner surface of the rotating shell 331. The sides of the plurality of positioning blocks 334 that are away from each other are fixedly connected with springs 335. The matching component 1 31 includes a fixed shell 311, and a plurality of positioning grooves 312 are provided on the outer surface of the fixed shell 311. Two symmetrically arranged sliding columns 313 are fixedly connected to the outer surface of the fixed shell 311. An observation lens 1 314 is fixedly connected to the left end of the inner surface of the fixed shell 311. The two sliding columns 313 are respectively matched with two corresponding convex threads 332.

[0024] Furthermore, the operator needs to hold the device tightly before rotation adjustment. The further rotation device displays the touch screen 43 and turns on. Secondly, by rotating the rotating shell 331, when the rotating shell 331 rotates, the track groove 333 opened inside it will cooperate with the two sliding posts 313 fixed on the right side of the outer surface of the observation lens 314 and connected symmetrically, so that the device can be rotated forward through the two corresponding convex threads 332, so that the device can be adjusted. Further, when the rotating shell 331 is rotated forward to adjust the distance, a plurality of springs 335 fixedly connected to the left side of the inner surface cooperate with the positioning block 334, so that the positioning block 334 can slide with the plurality of positioning grooves 312 during the rotation process. Further, after the operator adjusts the distance to a suitable position, the spring 335 at this time will be reset under the self-resilience of the positioning block 334, so as to be embedded in the corresponding positioning groove 312, so as to achieve the purpose of rotation positioning. Furthermore, when the focus adjusted by the operator is not suitable for the actual situation, the operator can remove the observation lens 2 32 by rotating the fixed lens ring 34 threadedly connected to the right end of the second component 33, and replace the observation lens 2 32 with a suitable one. After the replacement is completed, the fixed lens ring 34 only needs to be rotated in the reverse direction until it cannot be moved. Furthermore, by providing two sliding posts 313 to cooperate with two convex threads 332, the device can be rotationally adjusted. Furthermore, in the process of the two sliding posts 313 cooperating with the two convex threads 332, a plurality of positioning blocks 334 are provided to cooperate with corresponding plurality of positioning grooves 312, so that positioning can be achieved during the distance adjustment process, thereby helping to maintain the stability of the shooting picture, and further avoiding the situation of blurred picture caused by hand shaking or slight movement when shooting at a long distance.

[0025] Embodiment 2 This embodiment achieves the purpose of cleaning the power supply device inside the loading assembly 2 and dissipating heat at the same time on the basis of the first embodiment; For further information, please refer to Figure 8 , Fig. 9 and Fig.10As shown, the loading component 2 includes a shell 21, an isolation plate 22 is fixedly connected to the bottom of the inner cavity of the shell 21, a slide rail 23 is provided at the bottom of the isolation plate 22, and the slide rail 23 is slidably connected to the cleaning component 5. The cleaning component 5 includes a battery 51, a heat dissipation aluminum sheet 52 is fixedly connected to the left end of the battery 51, a dust removal component 53 is closely attached to the left side of the heat dissipation aluminum sheet 52, and the outer surface of the dust removal component 53 and the outer surface of the heat dissipation component 54 are commonly wound and connected with a belt. The dust removal component 53 includes a micro motor 531, and the upper part of the micro motor 531 is fixedly connected to the rear side of the bottom of the isolation plate 22. The output end of the machine 531 is fixedly connected to a bidirectional threaded rod 533 through a coupling, a matching column 532 is fixedly connected to the left side of the outer surface of the bidirectional threaded rod 533, and a dust removal brush 534 is threadedly connected to the right side of the outer surface of the bidirectional threaded rod 533. The heat dissipation component 54 includes two fixed plates 541, and the two fixed plates 541 are rotatably connected to a rotating column 542. A power wheel 543 is fixedly connected to the middle of the outer surface of the rotating column 542. A belt is wound around the outer surface of the power wheel 543 and the outer surface of the matching column 532, and a heat dissipation fan 544 is fixedly connected to the left side of the rotating column 542.

[0026] Further, when the operator starts the display touch screen 43, the display touch screen 43 will drive the micro motor 531 to start through the internally set program. When the micro motor 531 is started, it will rotate through the bidirectional threaded rod 533 fixedly connected to the output end, so that when the bidirectional threaded rod 533 rotates, it can drive the dust removal brush 534 threadedly connected to the surface of the bidirectional threaded rod 533 to reciprocate, so that the heat dissipation aluminum sheet 52 fixedly connected to the left side of the battery 51 can be cleaned, so as to remove the attached dust and dirt, reduce thermal resistance, and make the heat dissipation more smoothly, thereby improving the heat dissipation efficiency, and avoiding the heat generated by the battery 51 itself when starting The service life is reduced, and the matching column 532 fixed on the outer surface of the bidirectional threaded rod 533 will drive the rotating column 542 on the left side to rotate through the belt, so that the rotating column 542 is fixedly connected to the heat dissipation fan 544, so as to achieve the purpose of cleaning the heat dissipation aluminum sheet 52 while dissipating heat, avoiding the power supply from generating heat during operation, thereby causing the battery 51 to deteriorate or be damaged, and extending the service life of the battery 51; It should be further explained that the device micro motor 531, display touch screen 43 and heat sink aluminum sheet 52 in this solution are all conventional settings in the prior art, wherein the working principle of the micro motor 531 is: the process of converting electrical energy into mechanical energy, the core of which is to use specific physical effects to achieve this energy conversion. Generally speaking, the micro motor 531 consists of a stator and a rotor. When a high-frequency AC voltage is applied to the piezoelectric ceramic vibrator of the stator, the inverse piezoelectric effect or the electrostrictive effect is used to make the stator produce microscopic mechanical vibrations in the ultrasonic frequency band. This high-frequency vibration is then amplified by resonance to further enhance its amplitude and energy. Next, this amplified mechanical vibration is transmitted to the rotor by friction coupling, causing it to start rotating or produce linear motion. In this process, the friction between the stator and the rotor plays a key role, which effectively converts the vibration energy of the stator into the mechanical energy of the rotor, thereby fixedly connecting it to the bidirectional threaded rod 533 through the coupling at the output end, thereby driving the bidirectional threaded rod 533 to rotate; The working principle of the further display touch screen 43 is as follows: when the electronic touch screen is touched or receives a start signal, its internal circuit system will start working. This circuit system includes components such as sensors, controllers, and micro motors 531. The sensor is responsible for detecting the touch action on the touch screen or the received start signal, and transmitting this signal to the controller inside the micro motor 531. After receiving the signal, the controller inside the micro motor 531 will analyze and process it, and then send an instruction to the micro motor 531. This instruction tells the micro motor 531 that it needs to start rotating to perform the corresponding operation. After receiving the instruction, the micro motor 531 will start working. It uses electrical energy to convert into mechanical energy, and through the interaction between the internal rotor and stator, it generates a rotational torque, thereby driving the touch screen or related components to rotate; In addition, the working principle of the heat sink aluminum sheet 52 is as follows: the heat sink aluminum sheet 52 is mainly used to dissipate heat for heat-prone electronic components in electrical appliances. Based on the three heat transfer modes of heat conduction, convection and radiation, when the heat source generates heat, the heat is firstly conducted to the aluminum sheet through the base tube, and then the heat on the aluminum sheet is dissipated to the surrounding environment through air convection and radiation. This design makes full use of the high thermal conductivity of aluminum and the heat dissipation area advantage of the fin structure to achieve efficient heat dissipation. In addition, when designing the heat sink aluminum sheet 52, gaps are left on both the upper and lower sides, so that the dust removal component 53 can complete the cleaning of the surface of the heat sink aluminum sheet 52 without causing the heat sink aluminum sheet 52 to be unable to be cleaned; Furthermore, by providing a bidirectional threaded rod 533 to cooperate with a dust removal brush 534, the bidirectional threads on the surface of the bidirectional threaded rod 533 enable the dust removal brush 534 to continuously clean the surface of the heat dissipation aluminum sheet 52, thereby preventing dust and impurities accumulated on the surface of the heat dissipation aluminum sheet 52 from clogging the tiny pores on the heat dissipation sheet, resulting in reduced heat dissipation efficiency. Furthermore, by providing a matching column 532, the rotating column 542 can be driven to rotate through a belt when rotating, thereby dissipating heat from the inner cavity where the battery 51 is located, thereby ensuring that the camera can operate stably in a high temperature environment to avoid performance degradation or failure due to overheating. Finally, it should be noted that the camera components and any circuit connections in this device are conventional designs in the prior art. The specific situation is subject to actual production, and this solution will not elaborate on it in detail. Embodiment 3 The present invention also provides a method for using a lens device with a rotational zoom function, the method specifically comprising: a: During use, the operator first inserts his right hand into the wristband 1 and clamps it with his thumb, then rotates to open the display touch screen 43, and then rotates the rotating housing 331. When the rotating housing 331 rotates, it cooperates with two symmetrically arranged sliding columns 313 to achieve rotation adjustment; b: During the distance adjustment process, hold the housing 1 21 to ensure that the hand is stable. When the rotating housing 331 is rotated and extended, the distance between the observation lens 2 32 and the observation object is preliminarily adjusted, so that the positioning block 334 and the positioning groove 312 are matched to perform positioning and distance adjustment. When the image or target begins to become clear, release the hand. c: Turn on the display touch screen 43. When the display touch screen 43 is turned on, the micro motor 531 will be driven to rotate through the internal circuit, thereby driving the dust removal brush 534 to clean the surface of the heat dissipation aluminum sheet 52. Furthermore, while the micro motor 531 is rotating, the heat dissipation fan 544 can be driven to rotate through the power wheel 543, thereby dissipating the heat of the battery 51.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lens device with a rotational zoom function, comprising a wristband (1), characterized in that: The front end of the wristband (1) is fixedly connected to a loading component (2), the front end of the loading component (2) is rotatably connected to a rotating component (4), the front end of the loading component (2) is fixedly connected to a distance adjustment component (3), and the inner cavity of the loading component (2) is slidably connected to a cleaning component (5).

2. The lens device with a rotational zoom function according to claim 1, characterized in that: The distance adjustment component (3) comprises a first mating component (31), the outer surface of the first mating component (31) being slidably connected to a second mating component (33), the right side of the outer surface of the second mating component (33) being threadedly connected to a fixed lens ring (34), and the left side of the inner cavity of the fixed lens ring (34) being closely attached to an observation lens (32).

3. The lens device with a rotational zoom function according to claim 2, characterized in that: The second mating component (33) comprises a rotating shell (331), a convex thread (332) is provided on the right side of the outer surface of the rotating shell (331), two track grooves (333) are provided on the inner surface of the rotating shell (331), a plurality of positioning blocks (334) are slidably connected to the left part of the inner surface of the rotating shell (331), and a spring (335) is fixedly connected to the sides of the plurality of positioning blocks (334) that are away from each other.

4. The lens device with a rotational zoom function according to claim 3, characterized in that: The mating component 1 (31) comprises a fixed shell (311), a plurality of positioning grooves (312) are provided on the outer surface of the fixed shell (311), two symmetrically arranged sliding posts (313) are fixedly connected to the outer surface of the fixed shell (311), an observation lens 1 (314) is fixedly connected to the left end of the inner surface of the fixed shell (311), and the two sliding posts (313) are respectively mated with two corresponding convex threads (332).

5. The lens device with a rotational zoom function according to claim 1, characterized in that: The rotating assembly (4) comprises two fixed blocks (41), the rear sides of the two fixed blocks (41) are fixedly connected to the front end of the loading assembly (2), the sides of the two fixed blocks (41) close to each other are rotatably connected to a second housing (42), and the inner surface of the second housing (42) is fixedly connected to a display touch screen (43).

6. The lens device with a rotational zoom function according to claim 5, characterized in that: The loading assembly (2) comprises a first shell (21), an isolation plate (22) being fixedly connected to the bottom of the inner cavity of the first shell (21), a slide rail (23) being provided at the bottom end of the isolation plate (22), and the slide rail (23) being slidably connected to the cleaning assembly (5).

7. The lens device with a rotational zoom function according to claim 6, characterized in that: The cleaning component (5) comprises a battery (51), the left end of the battery (51) being fixedly connected to a heat dissipation aluminum sheet (52), the left side of the heat dissipation aluminum sheet (52) being closely attached to a dust removal component (53), and the outer surface of the dust removal component (53) and the outer surface of the heat dissipation component (54) being wound and connected by a belt.

8. The lens device with a rotational zoom function according to claim 7, characterized in that: The dust removal component (53) comprises a micro motor (531), the upper portion of the micro motor (531) being fixedly connected to the rear side of the bottom of the isolation plate (22), the output end of the micro motor (531) being fixedly connected to a bidirectional threaded rod (533) via a coupling, the left side of the outer surface of the bidirectional threaded rod (533) being fixedly connected to a matching column (532), and the right side of the outer surface of the bidirectional threaded rod (533) being threadedly connected to a dust removal brush (534).

9. The lens device with a rotational zoom function according to claim 8, characterized in that: The heat dissipation assembly (54) comprises two fixed plates (541), the two fixed plates (541) being rotatably connected to a rotating column (542) together, a power wheel (543) being fixedly connected to the middle of the outer surface of the rotating column (542), a belt being wound around the outer surface of the power wheel (543) and the outer surface of the matching column (532), and a heat dissipation fan (544) being fixedly connected to the left side of the rotating column (542).

10. A method for using a lens device with a rotational zoom function according to any one of claims 1 to 9, characterized in that: The method includes: a: During use, the operator first inserts his right hand into the wristband (1) and clamps it with his thumb, then rotates to open the display touch screen (43), and then rotates the rotating housing (331). When the rotating housing (331) rotates, it cooperates with two symmetrically arranged sliding columns (313) to achieve rotation adjustment; b: During the distance adjustment process, the user holds the housing 1 (21) to ensure that the hand is stable. When the housing (331) is rotated and extended, the distance between the observation lens 2 (32) and the observation object is preliminarily adjusted, so that the positioning block (334) and the positioning groove (312) are used to coordinate the positioning and distance adjustment. The user can release the grip when the image or object begins to become clear. c: Turning on the display touch screen (43). When the display touch screen (43) is turned on, the micro motor (531) is driven to rotate through the internal circuit, thereby driving the dust removal brush (534) to clean the surface of the heat dissipation aluminum sheet (52). Furthermore, while the micro motor (531) is rotating, the power wheel (543) can drive the heat dissipation fan (544) to rotate, thereby dissipating heat from the battery (51).

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