Aspheric lens assembly of range finder

Abstract

The utility model relates to an aspheric lens assembly of a range finder, and relates to the field of lens assembly design in optical measurement equipment, the aspheric lens assembly comprises a sleeve and a lens, a base is fixedly arranged in the sleeve, and the lens is arranged at the top of the base and fixedly connected through a first gland cylinder or glue. In addition, a second gland cylinder and an operation plate are further arranged, a through hole and a first sliding groove are formed in the operation plate, and a movable baffle, a movable spring, a clamping block and a clamping groove structure are arranged in the sliding groove, so that the lens installation stability and convenience are ensured. According to the invention, the lens assembly precision is improved, the lens is effectively shielded and protected, the overall stability of the assembly is enhanced, and the maintenance operation is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lens assembly design in optical measurement equipment, in particular to a rangefinder aspherical lens assembly. BACKGROUND

[0002] Handheld rangefinders are widely used in fields such as construction, surveying, and industrial detection. Their precision and reliability directly affect the accuracy of measurement results. With the advancement of technology, handheld rangefinders are continuously optimized in design and manufacturing, especially in the design of optical systems. Ensuring the stability and accuracy of lenses has become one of the key issues. Currently, handheld rangefinders on the market usually use multiple methods to fix and protect the internal aspherical lenses to ensure measurement accuracy and service life.

[0003] Some existing handheld rangefinders directly have mounting holes on the rangefinder. The size of the lens is adapted to the size of the mounting hole. The lens is directly set in the mounting hole, and then fixed to the rangefinder using glue.

[0004] However, the existing fixing method has certain defects. The lens and the rangefinder are fixed by glue, making them an integrated structure. It is difficult to replace the lens, limiting the maintenance and upgrade capabilities of the rangefinder. CONTENT OF THE INVENTION

[0005] To overcome the above technical problems, the present application provides a rangefinder aspherical lens assembly.

[0006] The rangefinder aspherical lens assembly provided by the present application adopts the following technical solution:

[0007] A rangefinder aspherical lens assembly includes a sleeve and a lens. The sleeve is vertically arranged. The sleeve is externally provided with external threads. The inner bottom of the sleeve is fixedly provided with a base. The base is annular. The outer diameter of the base is adapted to the inner diameter of the sleeve. The base and the sleeve are coaxially arranged. The outer wall of the base is fixedly connected to the inner wall of the sleeve. The lens is also arranged in the sleeve. The lens is arranged on the top of the base.

[0008] By adopting the technical scheme, the stability and accuracy of the lens in the sleeve can be ensured, and the installation and maintenance are facilitated. Specifically, the sleeve is externally provided with external threads, so that the entire assembly can be firmly installed in the range finder through threaded connection, improving the convenience and stability of assembly. The threaded connection of the sleeve and the range finder body not only enables the lens to be conveniently replaced, but also makes the entire replacement process simple and fast. When the lens needs to be replaced, the sleeve can be easily detached by rotating it in the thread unlocking direction, and then the new lens can be smoothly taken out and replaced. This design greatly improves the convenience of maintenance and use. The design of the base ensures the positional accuracy of the lens. The annular base is coaxially arranged and fixedly connected with the sleeve, effectively preventing the lens from being displaced due to vibration or impact. The lens is arranged at the top of the base, further enhancing the positioning accuracy of the lens and avoiding the possible deflection problem in the assembly process.

[0009] Optionally, a first gland is further included, an outer diameter of the first gland is adapted to an inner diameter of the sleeve, an outer diameter of the lens is adapted to the inner diameter of the sleeve, a sum of a length of the first gland and a height of the lens is equal to a height difference between a top surface of the base and a top surface of the sleeve, and the first gland is capable of being arranged in the sleeve and achieving interference fit with the sleeve.

[0010] By adopting the technical scheme, the first gland and the sleeve achieve interference fit, effectively preventing the lens from loosening or falling off, and improving the stability and reliability of the range finder. At the same time, the sum of the length of the first gland and the height of the lens is equal to the height difference between the top surface of the base and the top surface of the sleeve, which not only ensures the accurate position of the lens in the sleeve, avoids the decrease of measurement accuracy caused by assembly error, but also prevents the end of the first gland away from the lens from protruding out of the sleeve, thereby maintaining the flatness and aesthetics of the overall appearance of the range finder. At the same time, this design also improves the overall stability and reliability of the assembly, avoiding the loosening or falling off of the first gland caused by external impact.

[0011] Optionally, an outer diameter of the lens is smaller than an inner diameter of the sleeve, and the lens and an inner wall of the sleeve are fixedly connected through glue.

[0012] By adopting the technical scheme, a stable adhesive connection is formed between the lens and the sleeve, avoiding the stress concentration problem that may be caused by the traditional mechanical pressing method, and improving the assembly accuracy and stability of the assembly. At the same time, the installation process is simplified, and the production cost is reduced.

[0013] Optionally, a second gland barrel is further included, an outer diameter of the second gland barrel is matched with an inner diameter of the sleeve, an outer thread is arranged on an outer sidewall of the second gland barrel, an inner thread is arranged on an inner sidewall of the sleeve, and the second gland barrel is capable of being arranged in the sleeve and being threadedly connected with the sleeve.

[0014] By adopting the technical scheme, the second gland barrel and the sleeve are threadedly connected, thereby achieving a more stable fixing effect, improving the overall stability and reliability of the assembly.

[0015] Optionally, a second gland barrel is further included, an outer diameter of the second gland barrel is matched with an inner diameter of the sleeve, an outer thread is arranged on an outer sidewall of the second gland barrel, an inner thread is arranged on an inner sidewall of the sleeve, and the second gland barrel is capable of being arranged in the sleeve and being threadedly connected with the sleeve.

[0016] By adopting the technical scheme, the second gland barrel and the sleeve are threadedly connected, thereby achieving a more stable fixing effect, improving the overall stability and reliability of the assembly.

[0017] Optionally, a first sliding groove is arranged on a top surface of the operation plate, a length direction of the first sliding groove is a horizontal direction, the first sliding groove and the through hole are in communication with each other, and a baffle is slidably arranged in the first sliding groove along the length direction of the first sliding groove, the baffle being used for shielding the second gland barrel.

[0018] By adopting the technical scheme, the baffle on the operation plate can slide along the first sliding groove, thereby effectively shielding the second gland barrel. This not only improves the overall appearance of the assembly, but also effectively prevents external dust and sundries from entering the second gland barrel, thereby ensuring the measurement accuracy and service life of the range finder. Meanwhile, the baffle is designed to be easily removed by the user when needed, thereby facilitating the inspection or maintenance of the second gland barrel. When the range finder is not needed, the baffle can be horizontally moved along the first sliding groove to the shielding position, thereby effectively preventing external dust and sundries from entering the second gland barrel, and protecting the lens in the sleeve from being contaminated.

[0019] Optionally, a first spring is fixedly connected to a sidewall of the first sliding groove away from the through hole, one end of the first spring close to the through hole is fixedly connected to the baffle, and the baffle is capable of being located directly above the second gland barrel under the tension of the spring.

[0020] By adopting the technical scheme, the first spring is arranged to enable the baffle to automatically reset to the top of the second gland barrel without external force, thereby effectively preventing foreign matters from entering the inside of the second gland barrel and ensuring the measurement accuracy and stability of the range finder. Meanwhile, the design simplifies the operation process and improves the use convenience of users.

[0021] Optionally, a second sliding groove is formed in the baffle, the length direction of the second sliding groove is horizontal and perpendicular to the length direction of the first sliding groove, a clamping block is slidably arranged in the second sliding groove along the length direction of the second sliding groove, a clamping groove is formed in the sidewall of the first sliding groove, the size of the clamping groove is matched with the size of the clamping block, a second spring is fixedly connected to the sidewall of the second sliding groove away from the clamping groove, and one end of the second spring close to the clamping block is fixedly connected to the clamping block. When the clamping block is aligned with the clamping groove, the clamping block can be clamped in the clamping groove under the tension of the second spring, and at this time, the baffle is located away from the through hole.

[0022] By adopting the technical scheme, the second gland barrel is effectively shielded and protected, and foreign matters or dust from the outside are prevented from entering the inside of the second gland barrel, thereby ensuring the working stability and service life of the aspheric lens assembly of the range finder. Meanwhile, through the cooperation of the clamping block and the clamping groove, the baffle can be quickly locked at the position away from the through hole when needed, and at this time, the baffle is in the open state, which is convenient for the operator to perform maintenance or inspection work. The design of the second spring ensures that the clamping block can be automatically reset and firmly clamped in the clamping groove, thereby improving the operation convenience and reliability of the device.

[0023] When the range finder needs to work, the cooperation of the clamping block and the clamping groove enables the baffle to be firmly locked at the position away from the through hole, thereby ensuring that the baffle is in the open state. This not only facilitates the range finder to normally work through the lens, but also improves the reliability and stability of use.

[0024] Optionally, the longitudinal section of the first sliding groove and the longitudinal section of the second sliding groove are both T-shaped, the longitudinal section of the baffle and the longitudinal section of the clamping block are also both T-shaped, the size of the baffle is matched with the size of the first sliding groove, and the size of the clamping block is matched with the size of the second sliding groove.

[0025] By adopting the technical scheme, the stability and reliability of the baffle and the clamping block in the first sliding groove and the second sliding groove are significantly improved. The T-shaped design makes the baffle and the clamping block not easy to fall off, thereby ensuring that the working performance of the range finder will not be affected by accidental movement during use. Meanwhile, the size-matched design ensures smooth sliding of the baffle and the clamping block in the sliding groove, thereby improving the operation convenience.

[0026] Optionally, the depth direction of the second chute is a vertical direction, the height of the clamping block is greater than the depth of the second chute, and the top of the clamping block is always located outside the second chute.

[0027] By adopting the above technical solutions, the clamping block can stably slide in the second chute and always remain partially extended out of the second chute without external force. In this way, when the clamping block is aligned with the clamping groove, it can be smoothly clamped into the clamping groove under the action of the second spring, thereby achieving effective locking of the baffle. At the same time, this design is also conducive to manual operation of the clamping block, facilitating quick unlocking and adjustment of the position of the baffle.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. By arranging the base in the sleeve and fixing the lens, the lens is more stable during installation, avoiding displacement due to vibration or impact, significantly improving the measurement accuracy and overall stability of the range finder, thereby improving the user experience;

[0030] 2. The sleeve is provided with external threads, and the entire assembly can be easily installed inside the range finder through threaded connection, which not only simplifies the installation process, but also greatly reduces the installation time. At the same time, this design also facilitates subsequent disassembly and maintenance work, prolonging the service life of the equipment;

[0031] 3. The lens and the sleeve can be fixed by glue or a compression gland, both of which can effectively prevent the lens from loosening, ensuring the reliability and stability of long-term use. In addition, different fixing methods can be flexibly selected according to actual application requirements, increasing the adaptability of the product;

[0032] 4. The design of the first compression gland allows the lens to be tightly compressed in the sleeve, avoiding lens movement due to temperature changes or mechanical vibration, further enhancing the working performance and durability of the range finder, suitable for measurement tasks in various complex environments;

[0033] 5. The operation plate, its matching sliding groove and clamping block design provide a convenient operation interface, allowing users to easily open and close the baffle, keeping the baffle open when the range finder needs to work, and keeping it blocked when it does not need to work, which can effectively protect the lens and facilitate inspection and adjustment of the second compression gland, improving the maintainability and user experience of the equipment, while ensuring the safety and reliability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0035] Figure 2is a schematic diagram of a cross-sectional structure of Embodiment 1 of the present application;

[0036] Figure 3 is a schematic diagram of a cross-sectional structure of Embodiment 2 of the present application;

[0037] Figure 4 is a schematic diagram of an overall structure of Embodiment 3 of the present application with the baffle in an open state;

[0038] Figure 5 is a schematic diagram of a longitudinal cross-sectional structure of Embodiment 3 of the present application with the baffle in an open state;

[0039] Figure 6 is a schematic diagram of an overall structure of Embodiment 3 of the present application with the baffle in a shielding state;

[0040] Figure 7 is a schematic diagram of a cross-sectional structure of Embodiment 4 of the present application; Figure 4 is a partial enlarged schematic diagram of part A in the above figure;

[0041] Figure 8 is a partial enlarged schematic diagram of part B in the above figure. Figure 5

[0042] Reference signs: 1, sleeve; 11, base; 2, lens; 3, first gland cylinder; 4, glue; 5, second gland cylinder; 6, operation plate; 61, through hole; 62, first sliding groove; 63, clamping groove; 64, first spring; 7, baffle; 71, second sliding groove; 72, second spring; 8, clamping block. DETAILED DESCRIPTION

[0043] The following will be described in detail in combination with the accompanying Figures 1-8 The present application will be further described in detail. Embodiment 1

[0044] Embodiment 1 of the present application discloses a rangefinder aspherical lens 2 assembly.

[0045] Referring to Figure 1 and Figure 2 A rangefinder aspherical lens 2 assembly comprises a sleeve 1, a lens 2 and a first gland cylinder 3. The sleeve 1 is vertically arranged. The sleeve 1 is externally provided with external threads. The inner bottom of the sleeve 1 is fixedly provided with a base 11. The base 11 is annular. The outer diameter of the base 11 is adapted to the inner diameter of the sleeve 1. The base 11 is coaxially arranged with the sleeve 1. The outer wall of the base 11 is fixedly connected with the inner wall of the sleeve 1. The lens 2 is also arranged in the sleeve 1. The lens 2 is arranged on the top of the base 11.

[0046] Referring to Figure 1 and Figure 2 ​The outer diameter of the first compression sleeve 3 is matched with the inner diameter of the sleeve 1, the outer diameter of the lens 2 is matched with the inner diameter of the sleeve 1, the sum of the length of the first compression sleeve 3 and the height of the lens 2 is equal to the height difference between the top surface of the base 11 and the top surface of the sleeve 1, and the first compression sleeve 3 can be arranged in the sleeve 1 and achieve interference fit with the sleeve 1.

[0047] The sleeve 1 can be made of stainless steel or aluminum alloy, which has high strength and corrosion resistance, and is suitable for use in various environmental conditions. The external thread of the sleeve 1 can be formed by lathe processing, which ensures the accuracy and flatness of the thread. The base 11 can also be made of the same material and fixedly connected with the inner wall of the sleeve 1 by welding or bonding, which ensures the stability and reliability of the base 11.

[0048] The lens 2 can be made of glass or plastic, which has good light transmittance and scratch resistance. The diameter of the lens 2 is slightly smaller than the inner diameter of the sleeve 1, so as to facilitate installation and adjustment. The thickness of the lens 2 can be selected according to actual needs, generally between 0.5mm and 2mm, to balance the light transmittance and mechanical strength.

[0049] The first compression sleeve 3 can be made of high-hardness engineering plastic or metal material, which has good wear resistance and durability. The outer diameter of the first compression sleeve 3 is slightly larger than the inner diameter of the sleeve 1, so as to achieve interference fit, which can ensure that the first compression sleeve 3 tightly presses the lens 2 and prevents the lens 2 from loosening. The sum of the length of the first compression sleeve 3 and the height of the lens 2 is equal to the distance from the top surface of the base 11 to the top surface of the sleeve 1, which ensures the compactness and aesthetics of the whole assembly.

[0050] In order to further improve the fixing effect of the lens 2, a sealing gasket, such as a rubber or silicone gasket, can be added between the lens 2 and the sleeve 1, which can not only prevent dust from entering, but also increase the firmness of the fixing. In addition, a layer of anti-reflection coating can be coated on the part of the lens 2 in contact with the base 11, which can reduce the loss of light and improve the measurement accuracy of the range finder.

[0051] The implementation principle of the embodiment 1 of the application is as follows:

[0052] The sleeve 1 is provided with external threads, so that the whole assembly can be firmly installed inside the range finder through threaded connection, which improves the convenience and stability of assembly. The threaded connection design of the sleeve 1 and the range finder body not only makes the lens 2 easily replaceable, but also makes the whole replacement process simple and fast. When the lens 2 needs to be replaced, the sleeve 1 can be easily disassembled by rotating it in the direction of thread unlocking, and then the new lens 2 can be smoothly taken out and replaced. This design greatly improves the convenience of maintenance and use.

[0053] The interference fit between the first gland barrel 3 and the sleeve 1 effectively prevents the lens 2 from loosening or falling off, thereby improving the stability and reliability of the range finder. Meanwhile, the sum of the length of the first gland barrel 3 and the height of the lens 2 is equal to the height difference between the top surface of the base 11 and the top surface of the sleeve 1, which not only ensures the accurate position of the lens 2 in the sleeve 1 and avoids the decline of the measurement accuracy caused by assembly errors, but also prevents the end of the first gland barrel 3 away from the lens 2 from protruding out of the sleeve 1, thereby maintaining the flatness and aesthetics of the overall appearance of the range finder. Embodiment 2

[0054] With reference to Figure 3 Embodiment 2 differs from Embodiment 1 in that the aspherical lens 2 assembly of the range finder only includes the sleeve 1 and the lens 2, the outer diameter of the lens 2 is smaller than the inner diameter of the sleeve 1, and the lens 2 is fixedly connected to the inner wall of the sleeve 1 by the glue 4.

[0055] The implementation principle of Embodiment 2 of the present application is as follows:

[0056] The lens 2 and the sleeve 1 form a stable adhesive fixation, which avoids the stress concentration problem that may be caused by the traditional mechanical pressing method, thereby improving the assembly accuracy and stability of the assembly. Meanwhile, the installation process is simplified, and the production cost is reduced. Embodiment 3

[0057] With reference to Figure 4 and Figure 5 Embodiment 3 differs from Embodiment 1 in that the aspherical lens 2 assembly of the range finder includes the sleeve 1, the lens 2 and the second gland barrel 5, the outer diameter of the second gland barrel 5 is adapted to the inner diameter of the sleeve 1, the outer side wall of the second gland barrel 5 is provided with external threads, the inner side wall of the sleeve 1 is provided with internal threads, and the second gland barrel 5 can be threaded into the sleeve 1 and be threadedly connected to the sleeve 1.

[0058] With reference to Figure 4 The top of the second gland barrel 5 is fixedly connected to the operation plate 6, and the operation plate 6 is horizontally arranged. A through hole 61 is formed in the operation plate 6, and the size of the through hole 61 is adapted to the inner diameter of the second gland barrel 5. The through hole 61 and the second gland barrel 5 are arranged in vertical alignment.

[0059] With reference to Figure 4 and Figure 6 A first sliding groove 62 is formed in the top surface of the operation plate 6, and the length direction of the first sliding groove 62 is horizontal. The first sliding groove 62 and the through hole 61 are in communication with each other. A baffle 7 is slidingly arranged in the first sliding groove 62 along the length direction of the first sliding groove 62, and the baffle 7 is used for shielding the second gland barrel 5.

[0060] With reference to Figure 4 and Figure 6The first spring 64 is fixedly connected to the side wall of the first sliding slot 62 away from the through hole 61, and one end of the first spring 64 close to the through hole 61 is fixedly connected to the baffle 7.

[0061] With reference to Figure 4 and Figure 7 The second sliding slot 71 is provided on the baffle 7, the length direction of the second sliding slot 71 is horizontal and perpendicular to the length direction of the first sliding slot 62, the clamping block 8 is slidingly arranged in the second sliding slot 71 along the length direction of the second sliding slot 71, the clamping groove 63 is provided on the side wall of the first sliding slot 62, the size of the clamping groove 63 is matched with the size of the clamping block 8, the second spring 72 is fixedly connected to the side wall of the second sliding slot 71 away from the clamping groove 63, and one end of the second spring 72 close to the clamping block 8 is fixedly connected to the clamping block 8; when the clamping block 8 is aligned with the clamping groove 63, the clamping block 8 can be clamped in the clamping groove 63 under the tension of the second spring 72, and at this time, the baffle 7 is located away from the through hole 61.

[0062] With reference to Figure 5 and Figure 8 The longitudinal section of the first sliding slot 62 and the second sliding slot 71 is T-shaped, the longitudinal section of the baffle 7 and the clamping block 8 is also T-shaped, the size of the baffle 7 is matched with the size of the first sliding slot 62, and the size of the clamping block 8 is matched with the size of the second sliding slot 71.

[0063] The implementation principle of the embodiment 3 is as follows:

[0064] The second cover cylinder 5 and the sleeve 1 are fixedly connected through threads, so that a more stable fixing effect is achieved, and the overall stability and reliability of the assembly are improved. Meanwhile, this design makes it more convenient to install or replace the lens 2, without the need to disassemble the sleeve 1, and the lens 2 can be disassembled by rotating the second cover cylinder 5 to unlock the threads, so that the operation process of replacing the lens 2 is simplified, and the convenience of the replacement operation is improved.

[0065] The design of the operation plate 6 makes the user conveniently rotate the second cover cylinder 5 through the operation plate 6, so that the second cover cylinder 5 is conveniently installed or disassembled, and the lens 2 is conveniently replaced. Meanwhile, the through hole 61 on the operation plate 6 ensures the smooth passing of light, and does not affect the working performance of the range finder.

[0066] The design of the baffle 7 and the sliding slot allows the baffle 7 on the operation plate 6 to slide along the first sliding slot 62, thereby effectively shielding the second gland cylinder 5. This not only improves the overall aesthetics of the assembly, but also effectively prevents external dust and debris from entering the interior of the second gland cylinder 5, ensuring the measurement accuracy and service life of the range finder. At the same time, the design of the baffle 7 facilitates easy removal by the user when needed, making it convenient to inspect or maintain the second gland cylinder 5. When the range finder is not in use, the baffle 7 can be moved horizontally along the first sliding slot 62 to the shielding position, thereby effectively preventing external dust and debris from entering the interior of the second gland cylinder 5 and protecting the lens 2 inside the sleeve 1 from contamination.

[0067] The arrangement of the first spring 64 allows the baffle 7 to automatically reset to the exact position above the second gland cylinder 5 without external force, thereby effectively preventing foreign matter from entering the interior of the second gland cylinder 5 and ensuring the measurement accuracy and stability of the range finder. At the same time, this design simplifies the operation process and improves the user's convenience.

[0068] The cooperation of the clamping block 8 and the clamping slot 63 allows the baffle 7 to be quickly locked in a position away from the through hole 61 when needed, at which time the baffle 7 is in an open state, facilitating maintenance or inspection work by the operator. The design of the second spring 72 ensures that the clamping block 8 can automatically reset and be firmly clamped in the clamping slot 63, improving the operation convenience and reliability of the device.

[0069] When the range finder needs to work, the cooperation of the clamping block 8 and the clamping slot 63 allows the baffle 7 to be firmly locked in a position away from the through hole 61, thereby ensuring that the baffle 7 is in an open state. This not only facilitates the normal operation of the range finder through the lens 2, but also improves the reliability and stability of use.

[0070] The T-shaped design of the first sliding slot 62 and the clamping slot 63 makes it difficult for the baffle 7 and the clamping block 8 to fall off, ensuring that the working performance of the range finder will not be affected by accidental movement during use. The height design of the clamping block 8 also facilitates the user's manual operation of the clamping block 8, making it convenient and fast to unlock and adjust the position of the baffle 7.

[0071] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made in accordance with the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rangefinder aspherical lens assembly, characterized by, The utility model provides a lens fixing device, which comprises a sleeve (1) and a lens (2), the sleeve (1) is vertically arranged, the sleeve (1) is provided with external thread, the bottom of the sleeve (1) is fixedly provided with a base (11), the base (11) is annular, the outer diameter size of the base (11) is matched with the inner diameter size of the sleeve (1), the base (11) is coaxially arranged with the sleeve (1), the outer wall of the base (11) is fixedly connected with the inner wall of the sleeve (1), and the lens (2) is also arranged in the sleeve (1), and the lens (2) is arranged on the top of the base (11).

2. The rangefinder aspherical lens assembly of claim 1, wherein, Further comprising a first gland (3), the outer diameter size of the first gland (3) is matched with the inner diameter size of the sleeve (1), the outer diameter size of the lens (2) is matched with the inner diameter size of the sleeve (1), the length of the first gland (3) and the height of the lens (2) are equal to the height difference between the top surface of the base (11) and the top surface of the sleeve (1), and the first gland (3) can be arranged in the sleeve (1) and is in interference fit with the sleeve (1).

3. The rangefinder aspherical lens assembly of claim 1, wherein, The outer diameter size of the lens (2) is less than the inner diameter size of the sleeve (1), and the lens (2) is fixedly connected with the inner wall of the sleeve (1) by glue (4).

4. The rangefinder aspherical lens assembly of claim 1, wherein, Further comprising a second gland (5), the outer diameter size of the second gland (5) is matched with the inner diameter size of the sleeve (1), the outer side wall of the second gland (5) is provided with external thread, the inner side wall of the sleeve (1) is provided with internal thread, and the second gland (5) can be arranged in the sleeve (1) and is in threaded connection with the sleeve (1).

5. The rangefinder aspherical lens assembly of claim 4, wherein, The top of the second gland (5) is fixedly connected with an operation plate (6), the operation plate (6) is horizontally arranged, a through hole (61) is formed in the operation plate (6), the size of the through hole (61) is matched with the inner diameter size of the second gland (5), and the through hole (61) is vertically opposite to the second gland (5).

6. The rangefinder aspherical lens assembly of claim 5, wherein, A first sliding groove (62) is formed in the top surface of the operation plate (6), the length direction of the first sliding groove (62) is horizontal, the first sliding groove (62) is in communication with the through hole (61), a baffle (7) is slidably arranged in the first sliding groove (62) along the length direction, and the baffle (7) is used for shielding the second gland (5).

7. The rangefinder aspherical lens assembly of claim 6, wherein, A first spring (64) is fixedly connected to the side wall of the first sliding groove (62) away from the through hole (61), one end of the first spring (64) close to the through hole (61) is fixedly connected with the baffle (7), and the baffle (7) can be located directly above the second gland (5) under the tension of the spring.

8. The rangefinder aspherical lens assembly of claim 7, wherein, The baffle (7) is provided with a second chute (71), the length direction of the second chute (71) is horizontal and perpendicular to the length direction of the first chute (62), the second chute (71) is provided with a clamping block (8) sliding along the length direction, the side wall of the first chute (62) is provided with a clamping groove (63), the size of the clamping groove (63) is matched with the size of the clamping block (8), the side wall of the second chute (71) is fixedly connected with a second spring (72) away from the clamping groove (63), one end of the second spring (72) close to the clamping block (8) is fixedly connected with the clamping block (8); when the clamping block (8) is aligned with the clamping groove (63), the clamping block (8) can be clamped in the clamping groove (63) under the tension of the second spring (72), at this time, the baffle (7) is located away from the through hole (61).

9. The rangefinder aspherical lens assembly of claim 8, wherein, The longitudinal section of the first chute (62) and the second chute (71) is T-shaped, the longitudinal section of the baffle (7) and the clamping block (8) is also T-shaped, the size of the baffle (7) is matched with the size of the first chute (62), and the size of the clamping block (8) is matched with the size of the second chute (71).

10. The rangefinder aspherical lens assembly of claim 9, wherein, The depth direction of the second chute (71) is vertical, the height of the clamping block (8) is greater than the depth of the second chute (71), and the top of the clamping block (8) is always located outside the second chute (71).

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