A push rod motor-based zoom telephoto lens

Abstract

The utility model discloses a kind of long-focus lens of focusing based on push rod motor, it is related to laser obstacle clearing instrument technical field, including laser gun head, the end of the laser gun head is equipped with gun head limiting seat, the inside of the gun head limiting seat is equipped with the gun head focusing device for driving laser gun head adjustment focal length, laser fast inserter is installed in the side of the gun head limiting seat away from laser gun head.The utility model drives focusing push plate by push rod motor in gun head focusing device, realize the front and back movement of laser main lens, to accurately adjust focal length, focusing mode based on push rod motor can quickly respond focusing instruction, ensure that clear imaging is realized on target of different distance, satisfy high-precision shooting demand, simultaneously, the fixed connection of focusing push plate and laser main lens, the stability and reliability of focusing process are guaranteed, improve the applicability of equipment in complex environment.

Description

Technical Field

[0001] This utility model relates to the field of laser obstacle clearing technology, specifically an adjustable telephoto lens based on a push rod motor. Background Technology

[0002] As the scale of the power system continues to expand, the operation and maintenance of transmission lines face many challenges. As an advanced device, the laser obstacle clearing device can efficiently remove foreign objects in the transmission line channel, ensuring the stability and safety of power transmission. In order to accurately locate obstacles and ensure the accuracy of the laser's effective range, it needs to be equipped with a high-performance lens system to provide reliable visual guidance for the laser obstacle clearing device.

[0003] For example, in the integrated optical device for laser obstacle removal equipment disclosed in Chinese Patent Publication No. CN208026977U, all optical devices of the laser obstacle removal equipment are installed on the same base plate, which ensures that the installation benchmarks between optical devices are consistent, the structure is stable, and the radial spacing is easy to adjust.

[0004] In existing technologies, the laser output window and the adjustable lens are placed on the same base plate, ensuring that their positions are fixed on the same straight line. This allows both the laser output window and the adjustable lens to move on the base plate via a moving platform. The distance of the moving platform can be adjusted as needed to adjust the radial spacing of the optical equipment. This solves the problems of inaccurate optical axis and inflexible radial spacing adjustment that are common in the integration of laser output window and adjustable lens in current laser obstacle clearance equipment on the market. However, in terms of focusing accuracy, traditional lens focusing methods are prone to insufficient focusing precision due to factors such as wear of mechanical structures and transmission errors, making it difficult to meet the needs of high-precision shooting. Moreover, in terms of focusing safety, the frequent movement of mechanical parts during focusing of traditional lenses can easily allow dust to enter the lens. At the same time, it is difficult to accurately limit the focusing mechanical structure, causing long-term wear and affecting the overall safety. Therefore, an adjustable telephoto lens based on a push rod motor is proposed to solve the above-mentioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model achieves this through the following technical solution: an adjustable telephoto lens based on a push rod motor, including a laser gun head, which serves as the front end of the entire device. This head is used for emitting lasers and integrating related functions, and is a key component for realizing laser ranging, aiming, and other functions. Through its rational internal structure design, it can accurately emit lasers, providing a foundation for ranging and focusing. Simultaneously, it works with other components to realize the main functions of the device. A gun head limiting seat is installed at the end of the laser gun head to limit its position and movement, ensuring it operates in the correct position, guaranteeing the stability and accuracy of the laser gun head, and preventing misalignment during use. If there is shaking or deviation, it will affect the performance of the equipment and the measurement results. The gun head limiting seat is equipped with a gun head focusing device for driving the laser gun head to adjust the focus. It is the core component for realizing the focusing of the laser main lens. Through the coordinated work of components such as push rod motor, the focus of the lens is adjusted. It can automatically adjust the focus of the laser main lens according to the laser ranging result to achieve the optimal focus, which improves the automation level and working efficiency of the equipment. A laser quick connector is installed on the side of the gun head limiting seat away from the laser gun head for quick connection and disconnection of the laser emitting part, which facilitates the installation and maintenance of the equipment, improves the ease of use and maintenance efficiency of the equipment, and reduces the downtime of the equipment. The laser gun head focusing device includes a driving component, which is installed inside the laser gun head limiting seat and connected to the end surface of the laser gun head near the laser gun head limiting seat. A first limiting component is installed at the output end of the driving component. The outer edge surface of the first limiting component is connected to the inner wall of the laser gun head limiting seat. A second limiting component is provided below the first limiting component and connected to the outer edge surface of the laser gun head.

[0006] Preferably, the gun head limiting seat includes a mounting base, providing a mounting foundation for other components, ensuring that each component can be firmly installed on the device, guaranteeing the structural stability of the entire device, enabling the components to work together, and improving the reliability and service life of the equipment. The top of the mounting base has a mounting groove for installing and fixing other components, such as push rod motors, so that they can be firmly installed on the device, ensuring the stability and reliability of each component, and preventing them from loosening or falling off during use, thereby affecting the normal operation of the equipment. The bottom of the mounting base has a bottom sliding groove, providing a track for the movement of components such as push rod motors, so that they can move along a predetermined trajectory, ensuring the linearity of the push rod motor pushing the laser main lens back and forth is consistent, thereby ensuring the accuracy of focus adjustment and improving the performance and accuracy of the equipment. The mounting groove and the bottom sliding groove are respectively equipped with a first limiting component and a second limiting component.

[0007] Preferably, the laser gun head includes a main laser lens, a key component for laser focusing and imaging. The focus is adjusted by moving its lenses, allowing for effective focus adjustment within a range of 10m to 500m, minimizing the focal length to achieve clear imaging of targets at different distances. This improves the applicability and accuracy of the device. The end of the main laser lens extends into the interior of the mounting base and slides against the inner wall of the base. A protective sleeve is fixedly installed on the outer edge of the main laser lens, primarily protecting the main laser lens and other internal components. This prevents damage to key components from the external environment, effectively preventing dust, rainwater, and other impurities from entering the lens, ensuring lens cleanliness and optical performance, and extending the device's lifespan. The outer edge of the protective sleeve slides against the inner wall of the mounting base. The end of the main laser lens furthest from the mounting base serves as a emission window, providing an outlet for laser emission. This ensures the laser can smoothly exit from the device and accurately reach the target location, while also preventing interference from external light from entering the device, guaranteeing the accuracy and stability of laser emission.

[0008] Preferably, the drive assembly includes a motor mounting base for mounting and fixing the push rod motor, ensuring its stable operation and guaranteeing its stability and reliability. This prevents the push rod motor from shaking or shifting during operation, which could affect the equipment's performance and focusing accuracy. The motor mounting base is detachably mounted on the inner wall of the mounting base. The bottom of the motor mounting base is equipped with a push rod motor that is embedded in the inner wall of the mounting base, serving as a power source to drive the laser main lens to move back and forth, thereby adjusting the focus. Through precise control, rapid and accurate focus adjustment can be achieved, improving the equipment's performance. The response speed and focusing accuracy are improved by extending the output end of the push rod motor into the mounting slot and fixing it with a focusing push plate. This plate is connected to the push rod motor and transmits the power of the push rod motor to the laser main lens, pushing it to move back and forth. This ensures that the power of the push rod motor can be effectively transmitted to the laser main lens, realizing focus adjustment and improving the focusing efficiency and accuracy of the equipment. The outer edge surface of the focusing push plate slides against the inner wall of the mounting slot, and the bottom surface of the focusing push plate is fixed to the end surface of the emission window extending into the inner wall of the mounting base, thereby driving the laser gun head to move in the mounting base to adjust the laser focal length.

[0009] Preferably, the first limiting component includes a first proximity switch and a second proximity switch. The first and second proximity switches serve as limiting devices to monitor the movement position of the push rod motor, preventing it from exceeding a predetermined range, thus improving the safety and reliability of the equipment, preventing overload or damage to the push rod motor, and ensuring the stability of the entire mechanical structure. The bottom surfaces of the first and second proximity switches are detachably connected to the inner wall of the mounting groove. A displacement sensor is fixedly installed on the top of the focusing push plate. The displacement sensor is used to measure the displacement of the laser main lens, providing feedback signals for focusing control. It can monitor the lens displacement in real time, ensuring the accuracy and stability of the focusing process, and improving the focusing precision and reliability of the equipment. The outer surface of the displacement sensor is adapted to slide against the inner wall of the bottom surface of the first and second proximity switches.

[0010] Preferably, the second limiting component includes a limiting guide rail, which provides limiting and guiding for the movement of the laser main lens, ensuring its linear movement, guaranteeing the accuracy and stability of focus adjustment, preventing lens offset or shaking during movement, and improving the performance and reliability of the equipment. The limiting guide rail is detachably installed on the outer edge surface of the emission window. A sliding strip is adapted and slidably connected to the inner wall of the limiting guide rail, cooperating with the limiting guide rail to provide support and guidance for the movement of the laser main lens, ensuring the smoothness and straightness of lens movement, improving focusing accuracy and equipment reliability. The top of the sliding strip is fixed to the inner wall of the bottom sliding groove.

[0011] Preferably, the focusing push plate and the sliding bar are located on the same axis, and the outer edge surface of the limiting guide rail slides against the inner wall of the mounting base.

[0012] This invention provides an adjustable telephoto lens based on a push rod motor. It has the following advantages: (i) This adjustable telephoto lens based on a push rod motor drives the focusing push plate through the push rod motor in the gun head focusing device to realize the forward and backward movement of the laser main lens, thereby accurately adjusting the focal length. The focusing method based on the push rod motor can quickly respond to focusing commands, ensuring clear imaging on targets at different distances and meeting the needs of high-precision shooting. At the same time, the fixed connection between the focusing push plate and the laser main lens ensures the stability and reliability of the focusing process and improves the applicability of the equipment in complex environments.

[0013] (ii) The adjustable telephoto lens based on the push rod motor is equipped with a first proximity switch and a second proximity switch as limit devices. It can monitor the position of the focusing push plate in real time, prevent the push rod motor from exceeding the set range during the movement, effectively avoid equipment damage caused by mechanical component overload or position deviation, improve the safety and stability of the focusing system, and extend the service life of the equipment.

[0014] (III) This adjustable telephoto lens based on a push rod motor uses a limiting guide rail and a sliding bar to provide precise guidance for the movement of the laser main lens, ensuring the linear movement of the lens during focusing and avoiding image blurring caused by offset or shaking. At the same time, the detachable design of the limiting guide rail facilitates maintenance and replacement, further improving the reliability and maintenance convenience of the equipment.

[0015] (iv) This adjustable telephoto lens based on a push rod motor can monitor the displacement of the laser main lens in real time by using a displacement sensor installed on the top of the focusing push plate and feed the data back to the control system, making the focusing process more intelligent and automated. It can quickly adjust the focal length according to actual needs, improving the response speed and focusing accuracy of the equipment. At the same time, the cooperation between the displacement sensor and the proximity switch further enhances the stability of the focusing system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance and structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the appearance and structure of the present utility model. Figure 2 ; Figure 3 This is a partial structural diagram of the present invention. Figure 1 ; Figure 4 This is a partial structural diagram of the present invention. Figure 2 ; Figure 5 This utility model Figure 4 A magnified structural diagram at point A; Figure 6 This is a partial structural diagram of the firing window and the gun head focusing device of this utility model.

[0017] In the diagram: 1. Laser gun head; 11. Protective cylinder; 12. Emission window; 13. Laser main lens; 2. Gun head limiting seat; 21. Mounting seat; 22. Bottom sliding groove; 23. Mounting groove; 3. Gun head focusing device; 31. Push rod motor; 32. Motor mounting seat; 33. Focusing push plate; 34. First proximity switch; 35. Second proximity switch; 36. Displacement sensor; 37. Limiting guide rail; 38. Sliding bar; 4. Laser quick-connect device. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1, please refer to Figure 1 , Figure 2 This utility model provides a technical solution: an adjustable telephoto lens based on a push rod motor, including a laser gun head 1, a gun head limiting seat 2 installed at the end of the laser gun head 1, a gun head focusing device 3 for driving the laser gun head 1 to adjust the focal length inside the gun head limiting seat 2, and a laser quick-connect device 4 installed on the side of the gun head limiting seat 2 away from the laser gun head 1. The laser gun head 1, as the core component of the entire device, is responsible for emitting laser and integrating related functions. The gun head limiting seat 2 at its end plays a role in fixing and limiting, ensuring that the laser gun head remains stable during focusing. The gun head focusing device 3 realizes the adjustment of the focal length of the laser gun head through the internal driving component, so that the laser can be accurately focused on the target. The laser quick-connect device 4 facilitates the quick connection and disassembly of the laser emitting part, improving the maintenance and use efficiency of the equipment. The laser gun head focusing device 3 includes a drive component, which is installed inside the laser gun head limiting seat 2 and connected to the end surface of the laser gun head 1 near the laser gun head limiting seat 2. A first limiting component is installed at the output end of the drive component. The outer edge surface of the first limiting component is connected to the inner wall of the laser gun head limiting seat 2. A second limiting component is provided below the first limiting component and connected to the outer edge surface of the laser gun head 1. The laser gun head limiting seat 2 includes a mounting seat 21. A mounting groove 23 is provided at the top of the mounting seat 21, and a bottom sliding groove 22 is provided at the bottom of the mounting seat 21. The first limiting component and the second limiting component are respectively installed in the mounting groove 23 and the bottom sliding groove 22. The drive component is driven by a motor to push the laser main lens 13 to move along the sliding groove in the mounting seat 21 to achieve focal length adjustment. The first limiting component and the second limiting component limit the movement range of the lens to ensure that the lens will not exceed the predetermined position during focusing, thereby ensuring the accuracy and safety of focusing. The structural design of the mounting seat 21 provides a stable mounting base for the limiting component and the drive component, ensuring the stable operation of the entire focusing system. The laser gun head 1 includes a laser main lens 13. The end of the laser main lens 13 extends into the interior of the mounting base 21 and slides against the inner wall of the mounting base 21. A protective cylinder 11 is fixedly installed on the outer edge surface of the laser main lens 13, and the outer edge surface of the protective cylinder 11 slides against the inner wall of the mounting base 21. The end of the laser main lens 13 away from the mounting base 21 is the emission window 12. The laser main lens 13 can move smoothly along a predetermined track during focusing by slidingly connecting its end to the mounting base 21. The protective cylinder 11 is fixed on the outer edge surface of the laser main lens 13 to protect the lens from external interference and damage. The emission window 12 serves as the laser outlet, ensuring that the laser can be accurately emitted to the target position, while preventing external light and dust from entering the lens, thus ensuring the stability and reliability of optical performance.

[0020] In this embodiment, the adjustable telephoto lens drives the laser main lens to adjust its focal length via a push rod motor, achieving high-precision focus adjustment. The laser gun head 1, as the core component, has a gun head limiting seat 2 installed at its end to stabilize the laser gun head and provide a mounting base. The gun head limiting seat contains a gun head focusing device 3, whose driving component pushes the focusing push plate 33 via a push rod motor 31, thereby driving the laser main lens 13 to move back and forth along the sliding groove in the mounting base 21 to adjust the focal length. During the focusing process, the first limiting component and the second limiting component limit and guide the movement of the focusing push plate and the laser main lens, respectively, to ensure the stability and accuracy of the focusing process. At the same time, the displacement sensor 36 monitors the displacement of the lens in real time, providing feedback signals for focusing control and ensuring the accuracy of focus adjustment. The entire device is quickly connected and disconnected via a laser quick-connect device 4, facilitating installation and maintenance.

[0021] Example 2, as Figure 3 , Figure 4As shown, based on Embodiment 1, this utility model provides a technical solution: the drive assembly includes a motor mounting base 32, which is detachably mounted on the inner wall of the mounting base 21. A push rod motor 31, which is embedded in the inner wall of the mounting base 21, is mounted at the bottom of the motor mounting base 32. The output end of the push rod motor 31 extends into the mounting groove 23 and is fixedly connected to a focusing push plate 33. The outer edge surface of the focusing push plate 33 slides against the inner wall of the mounting groove 23, and the bottom surface of the focusing push plate 33 is flush with the inner wall of the launch window 12 extending into the mounting base 21. The end surface is fixed to drive the laser gun head 1 to move in the mounting base 21 to adjust the laser focal length. The push rod motor 31 serves as the core power source and is firmly installed on the inner wall of the mounting base 21 through the motor mounting base 32. Its output end drives the focusing push plate 33 to slide along the inner wall of the mounting groove 23. The focusing push plate 33 is fixedly connected to the end of the emission window 12 of the laser gun head 1. When the push rod motor 31 works, the focusing push plate 33 pushes the laser gun head 1 to move along the inner wall of the mounting base 21, thereby realizing the adjustment of the laser focal length and ensuring that the laser can be accurately focused on the target position.

[0022] In this embodiment, the focal length is adjusted by a drive assembly. Specifically, the core of the drive assembly is a push rod motor 31, which is mounted on a motor mounting base 32. The motor mounting base 32 is detachably mounted on the inner wall of the mounting base 21. This design not only facilitates the installation and maintenance of the push rod motor but also ensures the stability and flexibility of the entire structure. When the focal length needs to be adjusted, the push rod motor 31 is activated, and its output end pushes the focusing push plate 33 to slide along the inner wall of the mounting groove 23. The focusing push plate 33 is fixedly connected to the end of the emission window 12 of the laser gun head 1. Therefore, the movement of the push plate will cause the laser gun head 1 to move linearly within the mounting base 21, causing the position of the laser main lens 13 to change, thereby achieving focal length adjustment. During focusing, the sliding contact between the outer edge of the focusing push plate 33 and the inner wall of the mounting groove 23 ensures smooth and precise movement. Simultaneously, the cooperation of the limit guide rail 37 and the sliding bar 38 further restricts the movement trajectory of the laser gun head 1, preventing deviation or shaking during movement and ensuring the stability and reliability of the focusing process. Furthermore, through the cooperation of the displacement sensor 36 and proximity switches 34 and 35, the system can monitor the movement position and status of the push rod motor 31 in real time, thereby achieving precise limit control and avoiding damage or focusing failure due to excessive movement of the mechanical structure. This design not only improves focusing accuracy but also enhances the safety and service life of the equipment.

[0023] Example 3, as Figure 5 , Figure 6As shown, based on embodiments 1-2, this utility model provides a technical solution: the first limiting component includes a first proximity switch 34 and a second proximity switch 35. The bottom surfaces of the first proximity switch 34 and the second proximity switch 35 are detachably connected to the inner wall of the mounting groove 23. A displacement sensor 36 is fixedly installed on the top of the focusing push plate 33. The outer edge surface of the displacement sensor 36 is adapted to slide with the inner wall of the bottom surface of the first proximity switch 34 and the second proximity switch 35. When the focusing push plate 33 moves under the drive of the push rod motor 31, the displacement sensor 36 monitors the position change of the push plate in real time. The first proximity switch 34 and the second proximity switch 35 serve as limiting devices. When the displacement sensor 36 slides to the sensing area of ​​the proximity switch, the proximity switch triggers a signal to limit the further movement of the focusing push plate 33, thereby preventing the push rod motor 31 from being overloaded or exceeding the safe travel range, and ensuring the safety and reliability of the focusing process. The second limiting component includes a limiting guide rail 37, which is detachably mounted on the outer edge surface of the emission window 12. A sliding strip 38 is slidably connected to the inner wall of the limiting guide rail 37. The top of the sliding strip 38 is fixed to the inner wall of the bottom sliding groove 22. The focusing push plate 33 and the sliding strip 38 are located on the same axis, and the outer edge surface of the limiting guide rail 37 slides against the inner wall of the mounting base 21. During focusing, the focusing push plate 33 moves along the limiting guide rail 37 via the sliding strip 38. The limiting guide rail 37 precisely guides the movement direction of the focusing push plate 33 to ensure that it moves in a straight line and avoids deviation. At the same time, the cooperation between the sliding strip 38 and the bottom sliding groove 22 further enhances the stability of the movement, thereby ensuring the straightness and accuracy of the laser main lens 13 during focusing and improving the imaging quality.

[0024] In this embodiment, during the focusing process, the push rod motor 31 pushes the focusing push plate 33 to move according to the control signal. The displacement sensor 36 detects the position of the push plate in real time and feeds it back to the control system. When the focusing push plate 33 approaches the first proximity switch 34 or the second proximity switch 35, the proximity switch triggers a signal to limit the further movement of the push rod motor 31 and prevent the lens from exceeding the safe travel range. At the same time, the sliding bar 38 slides within the limiting guide rail 37 to ensure that the movement direction of the laser main lens 13 is accurate and to avoid focusing deviation caused by mechanical errors. The dual limiting mechanism not only improves the focusing accuracy but also enhances the reliability and service life of the equipment.

[0025] The following describes the specific working principle of this adjustable telephoto lens based on a push rod motor.

[0026] In use, first install the laser gun head 1 onto the gun head limiting seat 2, ensuring a tight fit between the laser gun head and the limiting seat. Then, install the laser quick-connect adapter 4 on the side of the limiting seat away from the laser gun head for quick connection of the laser emitting part. Check that all components are securely connected. Install the gun head focusing device 3 inside the limiting seat, and connect the output end of the push rod motor 31 to the focusing push plate 33, ensuring that the focusing push plate is fixed to the end of the emission window 12 of the laser main lens 13. After connecting the power, start the device and communicate with the control board inside the laser gun head via the tablet computer to calibrate the initial position of the device. Measure the target distance using the laser ranging function. Based on the ranging results, the push rod motor 31 automatically adjusts the focal length of the laser main lens 13 to achieve optimal focus. During operation, the displacement sensor 36 monitors the displacement of the laser main lens in real time to ensure focusing accuracy. The first proximity switch 34 and the second proximity switch 35 provide limit protection to prevent the push rod motor from overloading or exceeding the safe range. Simultaneously, the protective cylinder 11 and the sealing design prevent dust from entering the lens, ensuring long-term stable operation of the equipment. Regularly check the wear of each component, especially the cooperation between the sliding strip 38 and the limit guide rail 37, to ensure smooth sliding. Regularly clean the dust from the surface of the protective cylinder 11 to maintain optical performance. If any abnormalities are found, replace the damaged parts promptly to ensure the equipment is always in good working condition.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable telephoto lens based on a push rod motor, comprising a laser gun head (1), characterized in that: The laser gun head (1) is equipped with a gun head limiting seat (2) at its end. The gun head limiting seat (2) is equipped with a gun head focusing device (3) for driving the laser gun head (1) to adjust the focal length. A laser quick-connect device (4) is installed on the side of the gun head limiting seat (2) away from the laser gun head (1). The gun head focusing device (3) includes a driving component. The driving component is installed inside the gun head limiting seat (2) and connected to the end surface of the laser gun head (1) near the gun head limiting seat (2). A first limiting component is installed at the output end of the driving component. The outer edge surface of the first limiting component is connected to the inner wall of the gun head limiting seat (2). A second limiting component is provided below the first limiting component and connected to the outer edge surface of the laser gun head (1).

2. The adjustable telephoto lens based on a push rod motor according to claim 1, characterized in that: The gun head limiting seat (2) includes a mounting seat (21), the top of the mounting seat (21) is provided with a mounting groove (23), the bottom of the mounting seat (21) is provided with a bottom sliding groove (22), and a first limiting component and a second limiting component are respectively installed in the mounting groove (23) and the bottom sliding groove (22).

3. The adjustable telephoto lens based on a push rod motor according to claim 2, characterized in that: The laser gun head (1) includes a laser main lens (13), the end of which extends into the interior of the mounting base (21) and slides against the inner wall of the mounting base (21). A protective cylinder (11) is fixedly installed on the outer edge surface of the laser main lens (13), and the outer edge surface of the protective cylinder (11) slides against the inner wall of the mounting base (21). The end of the laser main lens (13) away from the mounting base (21) is a emission window (12).

4. The adjustable telephoto lens based on a push rod motor according to claim 3, characterized in that: The drive assembly includes a motor mounting base (32), which is detachably mounted on the inner wall of the mounting base (21). The bottom of the motor mounting base (32) is equipped with a push rod motor (31) that is embedded in the inner wall of the mounting base (21). The output end of the push rod motor (31) extends into the mounting groove (23) and is fixedly connected to a focusing push plate (33). The outer edge surface of the focusing push plate (33) slides against the inner wall of the mounting groove (23), and the bottom surface of the focusing push plate (33) is fixed to the end surface of the emission window (12) extending into the inner wall of the mounting base (21) to drive the laser gun head (1) to move in the mounting base (21) to adjust the laser focal length.

5. The adjustable telephoto lens based on a push rod motor according to claim 4, characterized in that: The first limiting component includes a first proximity switch (34) and a second proximity switch (35). The bottom surfaces of the first proximity switch (34) and the second proximity switch (35) are detachably connected to the inner wall of the mounting groove (23). A displacement sensor (36) is fixedly installed on the top of the focusing push plate (33). The outer edge surface of the displacement sensor (36) is adapted to slide with the inner wall of the bottom surface of the first proximity switch (34) and the second proximity switch (35).

6. The adjustable telephoto lens based on a push rod motor according to claim 5, characterized in that: The second limiting component includes a limiting guide rail (37), which is detachably mounted on the outer edge surface of the launch window (12). A sliding strip (38) is adapted to slide on the inner wall of the limiting guide rail (37), and the top of the sliding strip (38) is fixed to the inner wall of the bottom sliding groove (22).

7. The adjustable telephoto lens based on a push rod motor according to claim 6, characterized in that: The focusing push plate (33) and the sliding bar (38) are located on the same axis, and the outer edge surface of the limiting guide rail (37) slides against the inner wall of the mounting base (21).

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