High-precision zoom lens capable of being electrically adjusted in multiple gears

Abstract

The invention discloses a high-precision zoom lens capable of being electrically adjusted at multiple gears, relates to the technical field of zoom lenses, and solves the problem that the zoom imaging effect is affected due to the fact that an optical axis of an imaging lens in the zoom lens is large in shaking amplitude and a zoom group is easy to be blocked during zoom operation. The invention discloses a high-precision zoom lens capable of being electrically adjusted at multiple gears. The high-precision zoom lens comprises a zoom main body, the potentiometer assembly is mounted on one side of the bottom of the zoom main body; the multi-gear adjusting zoom system is arranged in the zoom main body and extends to the outer side; and the optical input structure is mounted at the bottom of the zoom main body through a screw and extends to the outer side. According to the invention, when the prism body moves to carry out zooming operation, the shaking amount of the optical axis of the prism body can be kept within an error range, and when the zooming group moves, through the linear motion function of the linear shaft rod, it is ensured that the zooming group can be prevented from being blocked, and the zooming precision is improved.

Description

Technical Field

[0001] This invention relates to the field of zoom lens technology, specifically to a high-precision zoom lens that can be electrically adjusted in multiple ranges. Background Technology

[0002] Lenses are ubiquitous in daily life, appearing in mobile phone lenses, surveillance cameras, photographic lenses, and microscope lenses. Among them are fixed-focus lenses and zoom lenses. Fixed-focus lenses, similar to microscope lenses, require changing lenses with different focal lengths to achieve an overall change in focal length and make the image seen through the lens clearer. These lenses are not only cumbersome to operate but also time-consuming. Zoom lenses, on the other hand, involve manually adjusting two or more lenses to change the focal length. The adjustment amount is uncertain until a clear image is seen. Zoom lenses can be manual or electric. This invention focuses on zoom lenses used in aerospace, therefore requiring an electric zoom lens. By driving and controlling the position of two sets of lenses, different focal lengths can be achieved, allowing the same location to be clearly seen at different altitudes and distances. The ground environment and the aerospace environment differ, thus the structure of zoom lenses also differs. Therefore, designing a high-precision, well-structured, and smoothly operating zoom lens is a key application in the aerospace field.

[0003] However, this zoom lens has the following drawbacks in practical use: 1. Existing zoom lenses typically use an electric drive mechanism (motor, etc.) to automatically switch the viewing angle displayed by their internal prisms to improve the ease of zoom switching. However, due to the high precision required for zoom operation, traditional solutions are prone to significant optical axis misalignment of the internal imaging lens caused by vibrations from the drive mechanism (motor, etc.). This can lead to jamming of the zoom module, affecting the zoom imaging effect. Furthermore, the rotational zoom method generates considerable friction during zooming, resulting in less smooth operation, wear, and jamming, thus shortening the zoom lens's lifespan. 2. Existing zoom lenses require a protective cover at the input section to ensure proper transmission and emission of the imaging light source and protect the lens during imaging operations. However, traditional protective covers, when assembled with zoom lenses and cameras, tend to accumulate dust and other impurities from the environment during use and storage, leading to less clear images and affecting the zoom lens's imaging performance. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision zoom lens with multi-level electric adjustment to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a high-precision zoom lens with multi-level electrically adjustable zoom, comprising: a zoom body; a potentiometer assembly mounted on one side of the bottom of the zoom body; a multi-level adjustable zoom system disposed inside the zoom body and extending to the outside; and an optical input structure mounted on the bottom of the zoom body and extending to the outside via screws. The multi-level adjustable zoom system includes: a motor assembly installed on the other side of the bottom of the zoom body; a reciprocating lead screw connected to the motor assembly and movably disposed on the outside of the zoom body; a pressure dust removal assembly connected to the reciprocating lead screw via ball bearings; an arc-shaped zoom assembly connected to the motor assembly and movably disposed on the outside of the zoom body; and a zoom lens assembly movably connected inside the arc-shaped zoom assembly and extending into the zoom body. The zoom lens assembly is positioned above the optical input structure.

[0006] As a preferred embodiment of the present invention, the potentiometer assembly includes: a side pressure seat mounted on one side of the bottom of the zoom body; a potentiometer module mounted inside the side pressure seat and extending to the outside; an optical baffle disposed above the detection end of the potentiometer module; and a side mounting plate connected to the optical baffle and mounted on the outside of the arc-shaped zoom assembly.

[0007] As a preferred embodiment of the present invention, the motor assembly includes: an outer base mounted on the other side of the bottom of the zoom body; a motor drive source mounted on the top of the outer base; a linear shaft connected to the output end of the motor drive source; a first gear mounted on the outside of the linear shaft and movably disposed inside the outer base; and a convex half-gear meshing with the first gear and movably disposed on the outside of the zoom body.

[0008] In a preferred embodiment of the present invention, a reciprocating lead screw is detachably connected and fixed to the bottom of the linear shaft. The reciprocating lead screw is rotatably connected to the inner bottom of the outer base. A pressurized dust removal assembly extending into the interior is installed at the bottom of the outer base. The convex semi-gear is mounted on the outer side of the bottom of the arc-shaped zoom assembly.

[0009] As a preferred embodiment of the present invention, the pressurized ash removal assembly includes: a gas tank installed at the bottom of the outer base; a gas injection nozzle connected to one side of the top of the gas tank; a piston movably disposed inside the gas tank; a vertical connecting rod connected to the piston and extending into the interior of the outer base; and a lifting slider connected to the vertical connecting rod and connected to the outside of the reciprocating lead screw via ball bearings. The lifting slider is slidably connected inside the outer base.

[0010] As a preferred embodiment of the present invention, the bottom of the gas tank is connected to a pressure valve, the bottom of the pressure valve is connected to a gas channel, the bottom of the gas channel is connected to an annular gas ring installed at the bottom of the optical input structure, the bottom of the annular gas ring is connected to a plurality of jet nozzles, and the jet nozzles are disposed at an off-center position at the bottom of the optical input structure.

[0011] As a preferred embodiment of the present invention, the arc-shaped zoom assembly includes: a rotating cam connected to the convex half-gear and movably connected to the outside of the zoom body; an arc-shaped groove formed on the inner wall of the rotating cam; guide balls disposed on the inner side of the rotating cam and movably connected to the upper and lower sides of the outer wall of the zoom body; and a ball bearing baffle sleeved and fixed on the top outer side of the zoom body and located above the rotating cam. A side mounting plate is installed on one side of the bottom of the rotating cam.

[0012] As a preferred embodiment of the present invention, a guide pin is movably disposed inside the arc-shaped groove, the guide pin is disposed through the straight groove, the straight groove is formed on the outer surface of the zoom body, and the bottom of the guide pin is connected to the zoom lens assembly.

[0013] As a preferred embodiment of the present invention, the zoom lens assembly includes: a vertical guide rod installed inside the zoom body; a guide rod baffle installed on the outer side of the top of the vertical guide rod and located at the top of the zoom body; a lens barrel slidably connected to the outer side of the vertical guide rod and movably connected to the inside of the zoom body; a lens mount retaining ring disposed at the bottom of the lens barrel; a lens mount body disposed inside the lens barrel and located on the side of the lens mount retaining ring; and a prism body disposed inside the lens mount body. The mirror tube, mirror base pressure ring, mirror base body, and prism body are each provided in duplicate.

[0014] As a preferred embodiment of the present invention, the optical input structure includes: an embedded mounting base installed at the bottom of the zoom body by screws; an embedded retaining ring installed at the center of the embedded mounting base; a lens disposed inside the embedded retaining ring; a tapered sleeve threaded to the bottom of the embedded mounting base and extending to the outside; and a protective lens disposed at the center of the bottom of the tapered sleeve. An annular air ring is installed at the eccentric position of the bottom of the conical sleeve. Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. In a high-precision zoom lens with multi-level electrically adjustable zoom, when zooming, the motor drive rotates the first gear, which meshes with the cam's convex half-gear, causing the cam to rotate. The cam then drives the guide pin in a linear motion, achieving the zoom purpose. The operation is simple and convenient. The three sets of linear bearings and guide rods inside the zoom lens keep the optical axis wobble of the prism within the error range during prism movement. Furthermore, the linear motion of the linear shaft prevents jamming in the zoom assembly (lens barrel and its internal structure), resulting in higher zoom accuracy. The use of guide balls reduces friction during cam rotation, making the cam rotate more smoothly and preventing zoom lens jamming. 2. In a high-precision zoom lens with multi-level electric adjustment, when the zoom lens is zoomed, the driving force that drives the zoom gear meshing transmission structure can simultaneously drive the reciprocating lead screw to rotate. Through the lead screw transmission, pressurized gas is injected and delivered into the gas injection nozzle, and then ejected through the nozzle to clean the gaps in the protective lens of the zoom lens. This reduces the adhesion of dust and other impurities in the environment to the surface of the protective lens, thus reducing the impact on the zoom lens's imaging effect. Furthermore, compared to traditional dust cleaning, this invention uses pressurized gas compression and ejection, generating stronger cleaning force and resulting in a better cleaning effect on the protective lens surface. 3. In high-precision zoom lenses with multi-level electrically adjustable zoom, the optical input section is protected by a detachable embedded mounting base and a tapered sleeve. This reduces the risk of environmental impurities entering the zoom lens and affecting its image quality. Furthermore, the detachable mounting base and tapered sleeve allow for easy assembly and disassembly to suit various shooting conditions and requirements, enhancing practicality. 4. In high-precision zoom lenses with multi-level electric adjustment, when zooming, the rotation of the rotating cam during zooming synchronously drives the optical baffle connected to the rotating cam to rotate. Through the sensing connection between the various recognition areas inside the optical baffle and the potentiometer module, the position of the two zoom groups (lens barrel and its internal structure) during zooming can be accurately determined, and the distance between the two zoom groups (lens barrel and its internal structure) can be adjusted in real time, so that the two zoom groups (lens barrel and its internal structure) reach the perfect position, improving the accuracy of automatic zoom. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention after assembly; Figure 2 This is a top-view structural diagram of the invention after overall assembly; Figure 3 This is an exploded view of the connection between the zoom body and the arc-shaped zoom assembly of the present invention; Figure 4 This is a schematic diagram of the overall main view of the present invention; Figure 5 This is the present invention. Figure 4 Schematic diagram of the structure viewed from the AA section; Figure 6 This is a side view of the overall structure of the present invention; Figure 7 This is the present invention. Figure 6 Schematic diagram of the structure in cross-section of the middle BB plane; Figure 8 This is a schematic cross-sectional view of the connection between the motor assembly and the pressurized ash removal assembly of the present invention; Figure 9 This is the present invention. Figure 8 Enlarged structural diagram of region C in the middle; Figure 10 This is a cross-sectional structural schematic diagram of the connection between the linear shaft and the pressurized ash removal component of the present invention; Figure 11 This is a cross-sectional view of the connection between the zoom body and the optical input structure of the present invention; Figure 12 This is a cross-sectional structural schematic diagram of the zoom lens assembly of the present invention; Figure 13 This is the present invention. Figure 12 A magnified structural diagram of region D in the middle; In the picture: 10. Zoom subject; 20. Potentiometer assembly; 201. Side mounting base; 202. Potentiometer module; 203. Optical baffle; 204. Side mounting plate; 30. Multi-level adjustable zoom system; 301. Motor assembly; 302. Reciprocating lead screw; 303. Pressurized dust removal assembly; 304. Arc-shaped zoom assembly; 305. Zoom lens assembly; 3011, outer base; 3012, motor drive source; 3013, linear shaft; 3014, first gear; 3015, convex half gear; 3031, Gas tank; 30311, Pressure valve; 30312, Gas passage; 30313, Annular gas ring; 30314, Gas nozzle; 3032, Gas injection nozzle; 3033, Piston; 3034, Vertical connecting rod; 3035, Lifting slider; 3041, Rotating cam; 3042, Arc-shaped groove; 30421, Guide pin; 30422, Straight groove; 3043, Guide ball; 3044, Ball bearing baffle; 3051, Vertical guide rod; 3052, Guide rod baffle; 3053, Lens barrel; 30531, Linear bearing retaining ring; 3054, Lens mount retaining ring; 3055, Lens mount body; 3056, Prism body; 40. Optical input structure; 401. Embedded mounting base; 402. Embedded retaining ring; 403. Lens; 404. Conical sleeve; 405. Protective lens; 50. Lower cover plate; 501. Guide rod pressure ring. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application. Example 1

[0019] Please see Figures 1-13A high-precision zoom lens with multi-level electrically adjustable zoom includes a zoom body 10; a potentiometer assembly 20 installed on one side of the bottom of the zoom body 10; a multi-level adjustable zoom system 30 disposed inside the zoom body 10 and extending to the outside; and an optical input structure 40 installed on the bottom of the zoom body 10 by screws and extending to the outside. The multi-level adjustable zoom system 30 includes: a motor assembly 301 installed on the other side of the bottom of the zoom body 10; a reciprocating screw 302 connected to the motor assembly 301 and movably disposed on the outside of the zoom body 10; a pressure dust removal assembly 303 connected to the reciprocating screw 302 by ball bearings; an arc-shaped zoom assembly 304 connected to the motor assembly 301 and movably disposed on the outside of the zoom body 10; and a zoom lens assembly 305 movably connected inside the arc-shaped zoom assembly 304 and extending into the zoom body 10. The zoom lens assembly 305 is disposed above the optical input structure 40.

[0020] The working principle is as follows: The motor assembly 301 drives the arc-shaped zoom assembly 304, which in turn drives the zoom lens assembly 305 located inside the zoom body 10 (moving up and down within the zoom body 10). By changing the height of the internal parts of the zoom lens assembly 305 within the zoom body 10, zooming is achieved. When the motor assembly 301 operates to achieve zooming, it drives the reciprocating screw 302 connected to the bottom to rotate. The rotation of the reciprocating screw 302 drives the pressure dust removal assembly 303 installed on its outside to operate, cleaning dust and other impurities adhering to the optical input structure 40. The structure of the optical input structure 40 protects the lens portion of the zoom lens input, reducing the probability of impurities from the external environment entering the zoom lens and ensuring the imaging effect of the zoom lens.

[0021] It should be noted that the reciprocating lead screw 302, the pressure dust removal assembly 303, and the optical input structure 40 can all be mounted on the zoom lens as needed.

[0022] For details, please refer to the following: Figure 4 The potentiometer assembly 20 includes: a side pressure seat 201 mounted on one side of the bottom of the zoom body 10; a potentiometer module 202 mounted inside the side pressure seat 201 and extending to the outside; an optical baffle 203 disposed above the detection end of the potentiometer module 202; and a side mounting plate 204 connected to the optical baffle 203 and mounted on the outside of the arc-shaped zoom assembly 304.

[0023] In the high-precision zoom lens of the present invention, which can be electrically adjusted in multiple ranges, when the arc-shaped zoom assembly 304 rotates to achieve zoom, it will simultaneously drive the side mounting plate 204 and the optical baffle 203 mounted on the outside of the arc-shaped zoom assembly 304 to rotate. The potentiometer module 202 counts the work, determines the movement position of the internal structure of the zoom lens assembly 305, and adjusts its spacing in real time so that the internal structure of the zoom lens assembly 305 reaches the perfect position, thereby improving the accuracy of the zoom operation.

[0024] For details, please refer to the following: Figure 2 and Figure 8 The motor assembly 301 includes: an outer base 3011 mounted on the other side of the bottom of the zoom body 10; a motor drive source 3012 mounted on the top of the outer base 3011; a linear shaft 3013 connected to the output end of the motor drive source 3012; a first gear 3014 mounted on the outside of the linear shaft 3013 and movably disposed inside the outer base 3011; and a convex half gear 3015 meshing with the first gear 3014 and movably disposed on the outside of the zoom body 10.

[0025] In this invention, a reciprocating screw 302 is detachably connected and fixed to the bottom of the linear shaft 3013. The reciprocating screw 302 is rotatably connected to the inner bottom of the outer base 3011. A pressurized dust removal assembly 303 extending into the interior is installed at the bottom of the outer base 3011. A convex half gear 3015 is installed on the outer side of the bottom of the arc-shaped zoom assembly 304.

[0026] In the high-precision zoom lens of the present invention, which can be electrically adjusted in multiple ranges, when zooming is performed, the motor drive source 3012 is activated, driving the linear shaft 3013 connected to the output end of the motor drive source 3012 to rotate, causing the first gear 3014 mounted on the outer side of the linear shaft 3013 to rotate. When the first gear 3014 rotates, the convex half gear 3015 meshing with its outer side rotates, driving the arc-shaped zoom assembly 304 connected to the convex half gear 3015 to operate.

[0027] For details, please refer to the following: Figure 8 , Figure 9 and Figure 10 The pressurized ash removal assembly 303 includes: a gas tank 3031 installed at the bottom of the outer base 3011; a gas injection nozzle 3032 connected to one side of the top of the gas tank 3031; a piston 3033 movably disposed inside the gas tank 3031; a vertical connecting rod 3034 connected to the piston 3033 and extending into the outer base 3011; and a lifting slider 3035 connected to the vertical connecting rod 3034 and connected to the outside of the reciprocating screw 302 via ball bearings, wherein the lifting slider 3035 is slidably connected inside the outer base 3011.

[0028] In this invention, the bottom of the gas tank 3031 is connected to a pressure valve 30311, the bottom of the pressure valve 30311 is connected to a gas channel 30312, the bottom of the gas channel 30312 is connected to an annular gas ring 30313 installed at the bottom of the optical input structure 40, the bottom of the annular gas ring 30313 is connected to a plurality of jet nozzles 30314, and the jet nozzles 30314 are disposed at an off-center position at the bottom of the optical input structure 40.

[0029] In the high-precision zoom lens of this invention, which can be electrically adjusted in multiple ranges, when the linear shaft 3013 rotates, the reciprocating lead screw 302 connected to its bottom will rotate accordingly, driving the lifting slider 3035 connected to the outside of the reciprocating lead screw 302 via ball bearings to move up and down. While the lifting slider 3035 is moving up and down, the piston 3033 connected to its bottom via a vertical connecting rod 3034 will move up and down inside the gas tank 3031, causing the gas inside the gas tank 3031 to be injected into the gas channel 30312 under pressure. The design of the pressure valve 30311 enables unidirectional gas delivery.

[0030] After the gas enters the interior of the gas channel 30312, it will follow into the annular gas ring 30313 connected to the bottom, and be sprayed to the outside through multiple jet nozzles 30314 connected to the annular gas ring 30313 to automatically remove surface impurities from the optical input structure 40.

[0031] For details, please refer to the following: Figure 2 , Figure 5 and Figure 7 The arc-shaped zoom assembly 304 includes: a rotating cam 3041 connected to the convex half gear 3015 and movably connected to the outside of the zoom body 10; an arc-shaped groove 3042 formed in the inner wall of the rotating cam 3041; guide balls 3043 disposed inside the rotating cam 3041 and movably connected to the upper and lower sides of the outer wall of the zoom body 10; and a ball baffle 3044 sleeved and fixed on the top outer side of the zoom body 10 and located above the rotating cam 3041, wherein a side mounting plate 204 is installed on one side of the bottom of the rotating cam 3041.

[0032] In this invention, a guide pin 30421 is movably disposed inside the arc-shaped groove 3042. The guide pin 30421 is disposed through the straight groove 30422. The straight groove 30422 is opened on the outer surface of the zoom body 10. The bottom of the guide pin 30421 is connected to the zoom lens assembly 305.

[0033] In the high-precision zoom lens of the present invention, which can be electrically adjusted in multiple ranges, when the convex half gear 3015 rotates, the rotating cam 3041 connected to the convex half gear 3015 will rotate (on the outside of the zoom body 10), and through the arc-shaped groove 3042 opened inside it, drive the guide pin 30421 movably connected to the inside of the arc-shaped groove 3042 to move up and down inside the straight groove 30422, thereby driving the zoom lens assembly 305 connected to the guide pin 30421 to operate.

[0034] For details, please refer to the following: Figure 12 and Figure 13 The zoom lens assembly 305 includes: a vertical guide rod 3051 installed inside the zoom body 10; a guide rod baffle 3052 installed on the top outer side of the vertical guide rod 3051 and located at the top of the zoom body 10; a lens barrel 3053 slidably connected to the outside of the vertical guide rod 3051 and movably connected to the inside of the zoom body 10; a lens mount retaining ring 3054 disposed at the bottom inside the lens barrel 3053; a lens mount body 3055 disposed inside the lens barrel 3053 and located on the side of the lens mount retaining ring 3054; and a prism body 3056 disposed inside the lens mount body 3055. Two of each of the lens barrel 3053, lens mount retaining ring 3054, lens mount body 3055, and prism body 3056 are provided.

[0035] It should be noted that a linear bearing pressure ring 30531 is provided on the outer side of the connection between the lens barrel 3053 and the vertical guide rod 3051.

[0036] In the high-precision zoom lens of the present invention, when the guide pin 30421 moves up and down, the lens barrel 3053 connected to its bottom will slide up and down on the outside of the three vertical guide rods 3051, thereby driving the position of the prism body 3056 set inside the lens barrel 3053 to be adjusted up and down, thus realizing the zoom operation.

[0037] In this invention, the design of the lens mount 3055 structure and the position of the lens mount pressure ring 3054 can achieve the limiting and fixing of the positions of the prism body 3056 and the lens mount 3055, ensuring that the lens mount 3055 and the prism 3056 will not wobble during zooming operations, thereby improving the accuracy of zooming operations.

[0038] For details, please refer to the following: Figure 11The optical input structure 40 includes: an embedded mounting base 401 installed at the bottom of the zoom body 10 by screws; an embedded retaining ring 402 installed at the center of the embedded mounting base 401; a lens 403 disposed inside the embedded retaining ring 402; a conical sleeve 404 threaded to the bottom of the embedded mounting base 401 and extending to the outside; and a protective lens 405 disposed at the center of the bottom of the conical sleeve 404, wherein an annular gas ring 30313 is installed at the eccentric part of the bottom of the conical sleeve 404.

[0039] In the high-precision zoom lens of the present invention, which can be electrically adjusted in multiple ranges, during actual assembly, the conical sleeve 404 and the protective lens 405 can be selectively assembled inside the embedded mounting base 401; the embedded mounting base 401 is rotatably assembled on the inner bottom of the zoom body 10. The design of both the lens 403 and the protective lens 405 provides dust protection for the zoom imaging unit inside the zoom body 10. Example 2

[0040] For details, please refer to the following: Figure 5 and Figure 7 A lower cover plate 50 located at the bottom of the zoom body 10 is installed on the outer side of the bottom of the vertical guide rod 3051. An embedded mounting base 401 is provided at the bottom of the lower cover plate 50. A lens barrel 3053 is provided above the lower cover plate 50. The middle part of the lower cover plate 50 is hollow. A guide rod pressure ring 501 is provided on the outer side of the connection between the lower cover plate 50 and the vertical guide rod 3051.

[0041] In the high-precision zoom lens of the present invention, which can be electrically adjusted in multiple ranges, multiple vertical guide rods 3051, which are assembled and fixed by guide rod pressure rings 501, can ensure that the lens barrel 3053 outside the vertical guide rods 3051 will not shift or shake when it moves up and down. This ensures that the lens barrel 3053 will not shake excessively when zooming, and ensures that the optical axis of the prism body 3056 is within the error range when zooming, thereby improving the accuracy of zooming.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0043] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0044] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A high-precision zoom lens with multi-level electrically adjustable zoom, characterized in that, include: Zoom body (10); potentiometer assembly (20) mounted on one side of the bottom of the zoom body (10); multi-level zoom system (30) disposed inside the zoom body (10) and extending to the outside; optical input structure (40) mounted on the bottom of the zoom body (10) and extending to the outside by screws. The multi-level adjustable zoom system (30) includes: a motor assembly (301) installed on the other side of the bottom of the zoom body (10); a reciprocating screw (302) connected to the motor assembly (301) and movably disposed on the outside of the zoom body (10); a pressurized dust removal assembly (303) connected to the reciprocating screw (302) via ball bearings; an arc-shaped zoom assembly (304) connected to the motor assembly (301) and movably disposed on the outside of the zoom body (10); and a zoom lens assembly (305) movably connected inside the arc-shaped zoom assembly (304) and extending into the zoom body (10). The zoom lens assembly (305) is positioned above the optical input structure (40).

2. The high-precision zoom lens with multi-level electric adjustment according to claim 1, characterized in that: The potentiometer assembly (20) includes: a side pressure seat (201) installed on one side of the bottom of the zoom body (10); a potentiometer module (202) installed inside the side pressure seat (201) and extending to the outside; an optical baffle (203) disposed above the detection end of the potentiometer module (202); and a side mounting plate (204) connected to the optical baffle (203) and installed on the outside of the arc-shaped zoom assembly (304).

3. A high-precision zoom lens with multi-level electric adjustment according to claim 1, characterized in that: The motor assembly (301) includes: an outer base (3011) mounted on the other side of the bottom of the zoom body (10); a motor drive source (3012) mounted on the top of the outer base (3011); a linear shaft (3013) connected to the output end of the motor drive source (3012); a first gear (3014) mounted on the outside of the linear shaft (3013) and movably disposed inside the outer base (3011); and a convex half gear (3015) meshing with the first gear (3014) and movably disposed on the outside of the zoom body (10).

4. A high-precision zoom lens with multi-level electric adjustment according to claim 3, characterized in that: The bottom of the linear shaft (3013) is detachably connected to a reciprocating screw (302), which is rotatably connected to the inner bottom of the outer base (3011). The bottom of the outer base (3011) is equipped with a pressurized dust removal assembly (303) extending into the interior. The convex half gear (3015) is installed on the outer side of the bottom of the arc-shaped zoom assembly (304).

5. A high-precision zoom lens with multi-level electric adjustment according to claim 4, characterized in that: The pressurized ash removal assembly (303) includes: a gas tank (3031) installed at the bottom of the outer base (3011); a gas injection nozzle (3032) connected to the top side of the gas tank (3031); a piston (3033) movably disposed inside the gas tank (3031); a vertical connecting rod (3034) connected to the piston (3033) and extending into the outer base (3011); and a lifting slider (3035) connected to the vertical connecting rod (3034) and connected to the outside of the reciprocating screw (302) via ball bearings. The lifting slider (3035) is slidably connected inside the outer base (3011).

6. A high-precision zoom lens with multi-level electric adjustment according to claim 5, characterized in that: The bottom of the gas tank (3031) is connected to a pressure valve (30311), the bottom of the pressure valve (30311) is connected to a gas channel (30312), the bottom of the gas channel (30312) is connected to an annular gas ring (30313) installed at the bottom of the optical input structure (40), the bottom of the annular gas ring (30313) is connected to a plurality of jet nozzles (30314), and the jet nozzles (30314) are located at an off-center position at the bottom of the optical input structure (40).

7. A high-precision zoom lens with multi-level electric adjustment according to claim 4, characterized in that: The arc-shaped zoom assembly (304) includes: a rotating cam (3041) connected to the convex half gear (3015) and movably connected to the outside of the zoom body (10); an arc-shaped groove (3042) formed on the inner wall of the rotating cam (3041); guide balls (3043) disposed on the inner side of the rotating cam (3041) and movably connected to the upper and lower sides of the outer wall of the zoom body (10); and a ball bearing baffle (3044) sleeved and fixed on the top outer side of the zoom body (10) and located above the rotating cam (3041). A side mounting plate (204) is installed on one side of the bottom of the rotating cam (3041).

8. A high-precision zoom lens with multi-level electric adjustment according to claim 7, characterized in that: The arc-shaped groove (3042) is movably provided with a guide pin (30421), which is provided through the straight groove (30422). The straight groove (30422) is opened on the outer surface of the zoom body (10), and the bottom of the guide pin (30421) is connected to the zoom lens assembly (305).

9. A high-precision zoom lens with multi-level electric adjustment according to claim 8, characterized in that: The zoom lens assembly (305) includes: a vertical guide rod (3051) installed inside the zoom body (10); a guide rod baffle (3052) installed on the top outer side of the vertical guide rod (3051) and located at the top of the zoom body (10); a lens barrel (3053) slidably connected to the outside of the vertical guide rod (3051) and movably connected to the inside of the zoom body (10); a lens mount retaining ring (3054) disposed at the bottom of the lens barrel (3053); a lens mount body (3055) disposed inside the lens barrel (3053) and located on the side of the lens mount retaining ring (3054); and a prism body (3056) disposed inside the lens mount body (3055). Two of each of the following components are provided: the lens barrel (3053), the lens mount pressure ring (3054), the lens mount body (3055), and the prism body (3056).

10. A high-precision zoom lens with multi-level electric adjustment according to claim 9, characterized in that: The optical input structure (40) includes: an embedded mounting base (401) installed at the bottom of the zoom body (10) by screws; an embedded retaining ring (402) installed at the center of the embedded mounting base (401); a lens (403) disposed inside the embedded retaining ring (402); a conical sleeve (404) threaded to the bottom of the embedded mounting base (401) and extending to the outside; and a protective lens (405) disposed at the center of the bottom of the conical sleeve (404). Among them, an annular air ring (30313) is installed at the eccentric part of the bottom of the conical sleeve (404).

Images