Telescope

Abstract

The utility model relates to the field of optical instruments, in particular to a telescope which comprises a support and an optical lens cone assembly arranged on the support. The optical lens barrel assembly comprises a main lens barrel, a focusing barrel and an objective lens which are installed in the main lens barrel, an ocular lens located on the rear side of the main lens barrel, and a focusing wheel assembly used for driving the focusing barrel to axially move back and forth relative to the main lens barrel. The eyepiece and the objective lens are located on the same optical path; the objective lens is directly or indirectly arranged on the focusing cylinder; the focusing barrel and the objective lens on the focusing barrel are positioned in the main lens barrel; and when the focusing barrel is located at the farthest end of the adjusting path, the farthest end of the focusing barrel is still located in the main lens barrel. The scheme has the advantages of simplified structure, dust prevention, water prevention, good appearance integrity and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical instrument field especially relates to a telescope. BACKGROUND

[0002] The astronomical telescope is the main tool of observing celestial bodies and capturing celestial bodies information. The existing astronomical telescope usually includes a structure main body, the structure main body includes a lens barrel, the lens barrel one end is equipped with optical objective mechanism, the other end is equipped with focusing mechanism and optical digital ocular mechanism in proper order. The optical objective mechanism includes the objective lens and the light shield that are arranged in the lens barrel, the lens barrel lower side is equipped with the support mechanism. The optical digital ocular mechanism includes the eyepiece shell, the eyepiece shell is equipped with optical eyepiece and digital ocular lens. In the use process, the focusing mechanism drives the focusing barrel and the optical digital ocular mechanism connected with it to move axially relative to the lens barrel, to realize lens focusing. However, this focusing mode has some problems. First, the eyepiece or objective lens moves outside the lens barrel in the adjustment process, which destroys the overall appearance of the telescope. Secondly, the eyepiece or objective lens extending out of the lens barrel can cause dust, water vapor and other pollutants to easily enter the gap between the lens and the edge of the lens barrel, adhere to the lens, and affect the observation effect. Finally, the extended lens is more likely to be accidentally collided or scratched, reducing the observation quality of the telescope. SUMMARY

[0003] In order to solve the above problems, the utility model discloses a telescope, has the advantages such as structure simplification, dustproof and waterproof, good appearance integrity, long service life.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The application provides a telescope, and the technical scheme is as follows: a support and an optical lens barrel assembly arranged on the support; the optical lens barrel assembly comprises a main lens barrel, a focusing barrel and an objective lens mounted in the main lens barrel, an eyepiece at the rear side of the main lens barrel, and a focusing wheel assembly for driving the focusing barrel to move axially relative to the main lens barrel; the objective lens and the eyepiece are on the same optical path; the objective lens is directly or indirectly arranged on the focusing barrel; the focusing barrel and the objective lens thereon are in the main lens barrel; and when the focusing barrel is at the farthest end of the adjustment path, the farthest end of the focusing barrel is still in the main lens barrel.

[0006] Furthermore, this application also proposes that the main lens barrel includes a guide tube for detachably fixed to the upper end of the support, a rear tube fixed to the rear side of the guide tube, a front tube fixed to the front side of the guide tube, and a light shield connected to the front end of the front tube; the focusing tube is slidably disposed on the guide tube, the focusing wheel assembly is mounted on the rear tube and drives the focusing tube to slide back and forth relative to the guide tube; when the focusing tube is at the farthest end of the adjustment path, the farthest end of the focusing tube does not exceed the far end of the light shield.

[0007] Furthermore, this application also proposes that the center of the guide cylinder has a through guide hole that runs from front to back, and the focusing cylinder is fitted and nested with the guide hole and can slide and adjust along the guide hole.

[0008] Furthermore, this application also proposes that the focusing cylinder is equipped with a rack; the focusing wheel assembly is mounted on the rear cylinder, the focusing wheel assembly includes a focusing wheel rotatably mounted on the rear cylinder, and an input gear connected to the focusing wheel and rotating synchronously therewith; the input gear meshes with the rack on the focusing cylinder, and when the focusing wheel drives the input gear to rotate, the focusing cylinder slides back and forth relative to the guide cylinder.

[0009] Furthermore, this application also proposes that the focusing cylinder is provided with a slide rail arranged along its axial direction, and a radially protruding opening groove is provided in the guide through hole of the guide cylinder; the slide rail of the focusing cylinder is slidably arranged in the opening groove of the guide cylinder; and the rack is provided on the slide groove sidewall inside the slide rail.

[0010] Furthermore, this application also proposes that an objective lens tube is fixedly connected to the front end of the focusing tube passing through the guide tube, and the objective lens is disposed on the front end of the objective lens tube.

[0011] Furthermore, this application also proposes that the objective lens tube is constructed as a tube whose diameter gradually increases from the proximal end to the distal end.

[0012] Furthermore, this application also proposes that an inner cylinder is provided inside the rear cylinder, the inner cylinder is fixedly connected to the rear side of the guide cylinder, and the rear cylinder is sleeved on the outside of the inner cylinder.

[0013] Furthermore, this application also proposes that the inner cylinder inside the rear cylinder is provided with a zenith mirror in the observation direction of the eyepiece, and the light passes through the objective lens and is refracted by the zenith mirror onto the eyepiece.

[0014] Furthermore, this application also proposes that the lower end of the guide cylinder is connected to the support via a bracket gimbal, the bracket gimbal including a lower gimbal fixed to the upper end of the support and an upper gimbal fixed to the lower end of the cylinder ring; the upper gimbal and the lower gimbal are rotatably connected, and an adjustment handle is provided at the connection.

[0015] As described above, the telescope provided in this application includes a support and an optical tube assembly mounted on the support. The optical tube assembly includes a main tube, a focusing tube and an objective lens mounted inside the main tube, an eyepiece located at the rear of the main tube, and a focusing wheel assembly for driving the focusing tube to move axially relative to the main tube. The eyepiece and the objective lens are on the same optical path. The objective lens is directly or indirectly mounted on the focusing tube. The focusing tube and the objective lens on it are located inside the main tube. Even when the focusing tube is at the farthest end of the adjustment path, the farthest end of the focusing tube is still inside the main tube. By placing the focusing tube and the objective lens inside the main tube and ensuring that the focusing tube remains inside the main tube during adjustment, the problem caused by the lens being exposed to the external environment in the prior art is effectively solved. It has the advantages of simplified structure, dust and water resistance, good overall appearance, and long service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a telescope provided in this application.

[0017] Figure 2 for Figure 1 Enlarged view of part A.

[0018] Figure 3 This is a three-dimensional schematic diagram of the optical lens barrel assembly provided in this application.

[0019] Figure 4 This is a cross-sectional schematic diagram of the optical lens barrel assembly provided in this application.

[0020] Figure 5 An exploded view of the optical lens barrel assembly provided in this application.

[0021] Figure 6 This is a schematic diagram of the installation of the focusing cylinder and the guide cylinder. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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 limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] like Figures 1-6As shown, this embodiment proposes a telescope, including a support 1 and an optical tube assembly 2 mounted on the support 1. The optical tube assembly 2 includes a main tube, a focusing tube 21 and an objective lens 22 mounted inside the main tube, an eyepiece 23 located at the rear of the main tube, and a focusing wheel assembly for driving the focusing tube 21 to move axially relative to the main tube. The eyepiece 23 and the objective lens 22 are on the same optical path. The objective lens 22 is directly or indirectly mounted on the focusing tube 21. The focusing tube 21 and the objective lens 22 are located inside the main tube. Even when the focusing tube 21 is at the farthest end of the adjustment path, the farthest end of the focusing tube 21 is still inside the main tube. The objective lens 22 can be directly fixed to the focusing tube 21 or indirectly connected to the focusing tube 21 through one or more intermediate components. The design of the focusing tube 21 ensures that it remains inside the main tube during adjustment, thereby preventing the objective lens 22 and the eyepiece 23 from extending outside the tube during focusing. Furthermore, the focusing wheel assembly drives the focusing tube 21 to slide back and forth, achieving precise focusing of the objective lens 22 and ensuring the stability and accuracy of the optical system. Specifically, by directly or indirectly mounting the objective lens 22 on the focusing tube 21, and completely placing the focusing tube 21 and the objective lens 22 inside the main tube, it is ensured that the objective lens 22 will not protrude outside the tube during focusing, thus maintaining the integrity of the telescope's appearance and preventing contamination and damage to the lenses. When the focusing tube 21 is at its farthest point in the adjustment path, its farthest point remains inside the main tube, further ensuring that the objective lens 22 and eyepiece 23 are completely concealed during focusing, effectively solving the problem in existing technologies where the focusing mechanism causes the objective lens 22 and eyepiece 23 to protrude outside the tube.

[0028] Therefore, the technical solution of this application not only solves the problem of the objective lens 22 and eyepiece 23 moving outside the telescope tube during focusing, but also improves the overall appearance of the telescope and the stability of the optical system, reduces the risk of contamination and damage to the lenses, thereby improving the observation quality and service life of the telescope.

[0029] exist Figure 5 and 6In the illustrated design, the main telescope tube includes a guide tube 201 detachably fixed to the upper end of the support 1, a rear tube 202 fixed to the rear side of the guide tube 201, a front tube 203 fixed to the front side of the guide tube 201, and a light shield 204 connected to the front end of the front tube 203. A focusing tube 21 is slidably mounted on the guide tube 201, and a focusing wheel assembly is mounted on the rear tube 202, driving the focusing tube 21 to slide back and forth relative to the guide tube 201. When the focusing tube 21 is at its furthest point in the adjustment path, the furthest point of the focusing tube 21 does not extend beyond the far end of the light shield 204. A dust cover 205 is detachably connected to the light shield 204, and is closed to protect the objective lens when the telescope is not in use. Specifically, the guide cylinder 201 has a through-hole 201a extending from front to back at its center. The focusing cylinder 21 is fitted and nested within the guide hole 201a and can slide back and forth along the guide hole 201a. A rack 211 is constructed on the focusing cylinder 21. The focusing wheel assembly is mounted on the rear cylinder 202 and includes a focusing wheel 31 rotatably mounted on the rear cylinder 202 and an input gear 32 connected to and rotating synchronously with the focusing wheel 31. The input gear 32 meshes with the rack 211 on the focusing cylinder 21. When the focusing wheel 31 drives the input gear 32 to rotate, the focusing cylinder 21 slides back and forth relative to the guide cylinder 201. In a preferred embodiment, a slide rail 212 is constructed on the focusing cylinder 21 along its axial direction, and a radially protruding opening groove 201b is constructed in the guide hole 201a of the guide cylinder 201. The focusing tube 21's slide rail 212 is slidably disposed in the opening groove 201b of the guide tube 201. A rack 211 is disposed on the side wall of the slide groove within the slide rail 212. Thus, through the aforementioned technical means, this application ensures the sliding path of the focusing tube 21 during adjustment, so that even when the focusing tube 21 is at the farthest end of the adjustment path, its farthest end will not exceed the far end of the light shield 204. This design avoids the problem of the focusing tube 21 exceeding the light shield 204 during adjustment, maintains the overall integrity of the telescope's appearance, and prevents dust, moisture, and other contaminants from entering the gap between the lens and the edge of the telescope tube, thereby improving the telescope's observation quality. Compared with existing technologies, the technical solution of this application effectively improves the observation effect while maintaining the telescope's clean appearance and reduces the impact of the external environment on the telescope's observation quality.

[0030] like Figure 6As shown, the guide tube 201 has a through-hole 201a at its center, and the focusing tube 21 is fitted and nested within the guide hole 201a, allowing it to slide back and forth along the guide hole 201a for adjustment. Specifically, the design of the guide hole 201a provides a precise sliding path for the focusing tube 21, enabling it to slide back and forth along the guide hole 201a. This design ensures that the focusing tube 21 slides stably and precisely during adjustment, thereby improving the focusing accuracy and operational stability of the telescope. The fitted nesting of the guide hole 201a and the focusing tube 21 achieves smooth sliding within the guide tube 201, solving the problem of unstable sliding during adjustment. The guide hole 201a can be circular, square, or other geometric shapes to accommodate different shapes of focusing tubes 21. Furthermore, the inner wall of the guide hole 201a can be machined into a smooth surface to reduce friction during the sliding of the focusing tube 21 and improve sliding efficiency. Furthermore, the dimensions of the guide hole 201a can be precisely designed according to the dimensions of the focusing tube 21 to ensure the compatibility between the focusing tube 21 and the guide hole 201a. As a preferred embodiment, the inner wall of the guide hole 201a can be coated with a lubricating material, such as polytetrafluoroethylene (PTFE), to further reduce friction during the sliding of the focusing tube 21. Additionally, sealing structures can be provided at both ends of the guide hole 201a to prevent dust and moisture from entering and affecting the sliding performance of the focusing tube 21. Thus, through the compatible nesting of the guide hole 201a and the focusing tube 21, smooth sliding of the focusing tube 21 within the guide tube 201 is achieved, solving the problem of unstable sliding of the focusing tube 21 during adjustment. This design not only improves the focusing accuracy and operational stability of the telescope but also prevents the focusing tube 21 from extending beyond the telescope tube during adjustment, reducing dust and moisture contamination of the lenses and improving the observation quality of the telescope.

[0031] Furthermore, this application proposes that a rack 211 be constructed on the focusing cylinder 21. A focusing wheel assembly is mounted on the rear cylinder 202, comprising a focusing wheel 31 rotatably mounted on the rear cylinder 202, and an input gear 32 connected to and rotating synchronously with the focusing wheel 31. The input gear 32 meshes with the rack 211 on the focusing cylinder 21. When the focusing wheel 31 drives the input gear 32 to rotate, the focusing cylinder 21 slides back and forth relative to the guide cylinder 201. Specifically, the rack 211 can be arranged along the axial direction of the focusing cylinder 21, and the input gear 32 can be designed as a gear meshing with the rack 211, its diameter and number of teeth adjustable according to actual needs. The focusing wheel 31 can be driven manually or electrically, and the input gear 32 rotates synchronously with the focusing wheel 31, thereby driving the focusing cylinder 21 to slide back and forth on the guide cylinder 201. In a preferred embodiment, the rack 211 can be disposed on the outer wall of the focusing tube 21, and the input gear 32 can be mounted on the shaft of the focusing wheel 31, achieving precise focusing control through gear meshing. Thus, by meshing the rack 211 on the focusing tube 21 with the input gear 32 in the focusing wheel assembly, the rotation of the focusing wheel 31 drives the input gear 32, thereby driving the focusing tube 21 to slide back and forth on the guide tube 201. This design ensures that the focusing tube 21 can move precisely relative to the guide tube 201 during adjustment, improving the accuracy and stability of focusing. Compared with the prior art, the technical solution of this application avoids the problem of the focusing tube 21 sliding back and forth relative to the guide tube 201 during adjustment, reducing the possibility of dust, moisture, and other contaminants entering the gap between the lens and the edge of the telescope tube, and improving the observation quality of the telescope.

[0032] Furthermore, this application proposes that a slide rail 212 is constructed on the focusing cylinder 21 along its axial direction, and a radially protruding opening groove 201b is constructed in the guide through hole 201a of the guide cylinder 201. The slide rail 212 of the focusing cylinder 21 is slidably disposed in the opening groove 201b of the guide cylinder 201. A rack 211 is disposed on the side wall of the slide groove within the slide rail 212. Specifically, the arrangement of the slide rail 212 allows the focusing cylinder 21 to slide along the guide through hole 201a of the guide cylinder 201 during adjustment, while the opening groove 201b in the guide cylinder 201 provides radial guidance, ensuring the stability and guiding accuracy of the sliding of the focusing cylinder 21. The arrangement of the rack 211 further enhances the adjustment accuracy and stability of the focusing cylinder 21. By meshing with the input gear 32 of the focusing wheel assembly, the rotation of the focusing wheel 31 can drive the focusing cylinder 21 to slide back and forth for adjustment. In a preferred embodiment, the opening slot 201b can be trapezoidal or rectangular in shape to accommodate different types of slide rails 212. The tooth profile of the rack 211 can be designed as an involute tooth profile to improve the meshing accuracy and transmission efficiency with the input gear 32.

[0033] Therefore, by setting a slide rail 212 on the focusing tube 21 and a radially protruding opening groove 201b in the guide through hole 201a of the guide tube 201, the slide rail 212 of the focusing tube 21 can be slidably positioned in the opening groove 201b of the guide tube 201, thereby improving the guiding accuracy and stability of the focusing tube 21 during the adjustment process. A rack 211 is set on the side wall of the slide groove within the slide rail 212 and meshes with the input gear 32 of the focusing wheel assembly. The rotation of the focusing wheel 31 drives the focusing tube 21 to slide back and forth for adjustment, further enhancing the adjustment accuracy and stability of the focusing tube 21. Compared with the prior art, the technical solution of this application, through the setting of the slide rail 212 and the opening groove 201b, effectively solves the problems of sliding instability and insufficient guiding accuracy that may occur during the adjustment process of the focusing tube 21, improving the overall performance and observation effect of the telescope.

[0034] like Figures 4-6 As shown, this application also proposes that an objective lens tube 25 is fixedly connected to the front end of the focusing tube 21 passing through the guide tube 201, and the objective lens 22 is disposed on the front end of the objective lens tube 25. Specifically, the objective lens tube 25 can be fixed to the focusing tube 21 in various ways, such as by threaded connection, snap-fit ​​connection, or welding. The front end of the objective lens tube 25 can be designed to match the size and shape of the objective lens 22 to ensure the stability and optical performance of the objective lens 22. In addition, the material of the objective lens tube 25 can be selected from high-strength, corrosion-resistant metals or composite materials to improve its durability and service life. Furthermore, the design of the objective lens tube 25 ensures that the objective lens 22 does not protrude from the main tube during adjustment, thereby preventing the objective lens 22 from being intruded by contaminants such as dust and moisture during adjustment, and preventing the objective lens 22 from being accidentally bumped or scratched due to protrusion from the main tube. Specifically, when the focusing tube 21 is at the farthest end of the adjustment path, the farthest end of the focusing tube 21 is still inside the main tube, ensuring the integrity of the objective lens 22 and the observation quality of the telescope. Therefore, the technical solution of this application solves the problem of the objective lens 22 protruding from the objective tube 25 during adjustment by placing the objective lens 22 at the front end of the objective tube 25 on the focusing tube 21. This design not only improves the observation quality and overall appearance of the telescope, but also enhances its durability and service life. Compared with the prior art, the technical solution of this application has significant advantages in preventing the objective lens 22 from being contaminated and damaged.

[0035] Furthermore, this application proposes that the objective lens tube 25 is constructed as a tube with a gradually increasing diameter from the near end to the far end. Specifically, this design of the objective lens tube 25 can be achieved in several ways. For example, the objective lens tube 25 can be composed of multiple concentric rings, each ring having a gradually increasing diameter, thus forming a structure with a gradually increasing diameter from the near end to the far end. Another implementation is that the objective lens tube 25 can be made from a single piece of material, with a smaller diameter at the near end and a larger diameter at the far end through processing techniques. As a preferred embodiment, the diameter change of the objective lens tube 25 can be non-linear, i.e., the diameter changes rapidly in some parts and slowly in others, to adapt to different optical requirements. Thus, the design of the objective lens tube 25 adopts a structure with a gradually increasing diameter from the near end to the far end, which helps to provide better optical performance and stability in the telescope's optical system. Through this structure, the objective lens tube 25 can better adapt to the needs of the optical system, while also improving the overall performance and lifespan of the telescope. Compared with existing technologies, the objective tube 25 design of this application can effectively reduce the gap between the lens and the edge of the tube, such as dust and water vapor, thereby improving the observation effect and reducing the risk of accidental collisions or scratches to the lens, further improving the observation quality of the telescope.

[0036] like Figure 5 As shown, an inner cylinder 206 is provided inside the rear cylinder 202, and the inner cylinder 206 is fixedly connected to the rear side of the guide cylinder 201. The rear cylinder 202 is sleeved on the outside of the inner cylinder 206. Specifically, the inner cylinder 206 can be connected to the rear side of the guide cylinder 201 by threaded connection, welding, or other fixing methods to ensure its stability. The rear cylinder 202 is installed on the outside of the inner cylinder 206 by sleeve. This design not only enhances the stability of the internal structure of the telescope, but also achieves structural compactness by reducing the protrusion of external components. For example, the inner cylinder 206 can be made of metal to improve its strength and durability, while the rear cylinder 202 can be made of a lightweight but strong material to reduce the overall weight. Thus, by adding the inner cylinder 206 and fixing it to the rear side of the guide cylinder 201, and by sleeved the rear cylinder 202 on the outside of the inner cylinder 206, the problems of compactness and stability of the internal structure of the telescope are solved. This design not only avoids protruding external components but also improves the overall performance of the telescope by enhancing the stability of the internal structure. Compared with existing technologies, the technical solution of this application significantly improves the stability and service life of the telescope while maintaining a compact structure.

[0037] Furthermore, this application proposes that the inner cylinder 206 inside the rear cylinder 202 is equipped with a zenith mirror 27 in the observation direction of the eyepiece 23. Light passes through the objective lens 22 and is refracted by the zenith mirror 27 onto the eyepiece 23. Specifically, the zenith mirror 27 is positioned so that light, after passing through the objective lens 22, is refracted by the zenith mirror 27 before reaching the eyepiece 23. As a preferred embodiment, the zenith mirror 27 can be in the form of a reflector or a prism, and its position and angle can be adjusted according to actual observation needs. Furthermore, the zenith mirror 27 can be made of a high-reflectivity material to ensure effective refraction and transmission of light. In addition, the zenith mirror 27 can be fixed using a threaded connection or a snap-fit ​​connection to ensure its stability and reliability during use.

[0038] Furthermore, this application proposes that the lower end of the guide tube 201 is connected to the support 1 via a gimbal 4. The gimbal 4 includes a lower gimbal 41 fixed to the upper end of the support 1 and an upper gimbal 42 fixed to the lower end of the tube ring. The upper gimbal 42 is rotatably connected to the lower gimbal 41, and an adjustment handle 43 is provided at the connection. Specifically, the guide tube 201 is connected to the support 1 via the gimbal 4. The gimbal 4 includes a lower gimbal 41 and an upper gimbal 42, which are rotatably connected and equipped with an adjustment handle 43. This design allows the angle between the upper gimbal 42 and the lower gimbal 41 to be adjusted by operating the adjustment handle 43 during telescope adjustment, thereby adjusting the tilt angle of the optical tube assembly 2, i.e., the observation angle. As a preferred embodiment, the rotatable connection between the upper gimbal 42 and the lower gimbal 41 can be achieved through bearings or similar mechanical structures to ensure smoothness and stability of adjustment. Furthermore, the design of the gimbal 4 makes the telescope adjustment more flexible and stable, improving the observation effect and user experience.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A telescope, comprising a support (1) and an optical tube assembly (2) disposed on the support (1); the optical tube assembly (2) comprising a main tube, a focusing tube (21) and an objective lens (22) mounted inside the main tube, an eyepiece (23) located at the rear of the main tube, and a focusing wheel assembly for driving the focusing tube (21) to move axially relative to the main tube; the eyepiece (23) and the objective lens (22) are on the same optical path; characterized in that: The objective lens (22) is directly or indirectly disposed on the focusing tube (21); the focusing tube (21) and the objective lens (22) thereon are located inside the main tube; and when the focusing tube (21) is at the farthest end of the adjustment path, the farthest end of the focusing tube (21) is still inside the main tube.

2. A telescope according to claim 1, characterized in that: The main lens barrel includes a guide barrel (201) for detachable fixation to the upper end of the bracket (1), a rear barrel (202) fixed to the rear side of the guide barrel (201), a front barrel (203) fixed to the front side of the guide barrel (201), and a light shield (204) connected to the front end of the front barrel (203); the focusing barrel (21) is slidably disposed on the guide barrel (201), the focusing wheel assembly is installed on the rear barrel (202), and drives the focusing barrel (21) to slide back and forth relative to the guide barrel (201); when the focusing barrel (21) is at the farthest end of the adjustment path, the farthest end of the focusing barrel (21) does not exceed the far end of the light shield (204).

3. A telescope according to claim 2, characterized in that: The guide cylinder (201) has a through guide hole (201a) at its center, and the focusing cylinder (21) is fitted and nested with the guide hole (201a) and can slide and adjust along the guide hole (201a).

4. A telescope according to claim 3, characterized in that: A rack (211) is constructed on the focusing cylinder (21); the focusing wheel assembly is installed on the rear cylinder (202), and the focusing wheel assembly includes a focusing wheel (31) rotatably disposed on the rear cylinder (202), and an input gear (32) connected to the focusing wheel (31) and rotating synchronously therewith; the input gear (32) meshes with the rack (211) on the focusing cylinder (21), and when the focusing wheel (31) drives the input gear (32) to rotate, the focusing cylinder (21) slides back and forth relative to the guide cylinder (201) for adjustment.

5. A telescope according to claim 4, characterized in that: The focusing cylinder (21) is provided with a slide rail (212) arranged along its axial direction, and a radially protruding opening groove (201b) is provided in the guide through hole (201a) of the guide cylinder (201); the slide rail (212) of the focusing cylinder (21) is slidably arranged in the opening groove (201b) of the guide cylinder (201); the rack (211) is provided on the side wall of the slide groove in the slide rail (212).

6. A telescope according to claim 2, characterized in that: The focusing tube (21) passes through the front end of the guide tube (201) and is fixed to the objective lens tube (25), and the objective lens (22) is set on the front end of the objective lens tube (25).

7. A telescope according to claim 6, characterized in that: The objective lens tube (25) is constructed such that its diameter gradually increases from the proximal end to the distal end.

8. A telescope according to claim 2, characterized in that: An inner cylinder (206) is provided on the inner side of the rear cylinder (202), and the inner cylinder (206) is fixedly connected to the rear side of the guide cylinder (201). The rear cylinder (202) is sleeved on the outer side of the inner cylinder (206).

9. A telescope according to claim 8, characterized in that: The inner cylinder (206) inside the rear cylinder (202) is equipped with a zenith mirror (27) in the observation direction of the eyepiece (23). Light passes through the objective lens (22) and is refracted by the zenith mirror (27) onto the eyepiece (23).

10. A telescope according to claim 2, characterized in that: The lower end of the guide cylinder (201) is connected to the bracket (1) via a bracket gimbal (4). The bracket gimbal (4) includes a lower gimbal (41) fixed to the upper end of the bracket (1) and an upper gimbal (42) fixed to the lower end of the cylinder ring. The upper gimbal (42) and the lower gimbal (41) are rotatably connected, and an adjustment handle (43) is provided at the connection.

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