Binocular hand-held telescope

Abstract

The utility model provides a binocular hand -held telescope relates to optical imaging technical field, binocular hand -held telescope includes casing, optical system and focusing subassembly, casing includes side -by -side first lens barrel and second lens barrel, optical system includes first optical system and second optical system, first optical system and second optical system are correspondingly arranged in first lens barrel and second lens barrel respectively, focusing subassembly includes focusing operation spare, focusing operation spare is used for focusing first optical system and / or second optical system, focusing operation spare protrudes in the middle area of casing back, the protruding height of focusing operation spare on casing back is lower than the plane where the common tangent plane of first lens barrel and second lens barrel is located, when telescope is hung temporarily in front of the chest of user, casing back leans on in front of the chest of user, because there is spacing between focusing operation spare and the plane where common tangent plane is located, focusing hand wheel is not easy to be mistaken by user when telescope is hung temporarily in front of the chest, improves user experience.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging technology, and in particular to a binocular handheld telescope. Background Technology

[0002] Currently, traditional binocular handheld binoculars typically consist of two tubes, each containing an optical imaging system and an objective lens module. These devices achieve focusing by rotating a focusing handwheel to drive the focusing mechanism, thereby adjusting the distance between the objective lens module and the image acquisition surface of the optical imaging system. However, when the binoculars are temporarily hung around the user's neck, the focusing handwheel is prone to accidental touches, causing unexpected focus shifts, which can affect the user's subsequent observation work and, to some extent, limit the improvement of the user's operating experience. Utility Model Content

[0003] The purpose of this invention is to provide a binocular handheld telescope to solve the technical problems mentioned in the prior art and improve the user experience.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is as follows: A binocular handheld telescope, comprising: The housing includes a first lens barrel and a second lens barrel arranged side by side; The optical system includes a first optical system and a second optical system, which are respectively disposed in the first lens barrel and the second lens barrel; A focusing assembly includes a focusing operation member for adjusting the focal length of the first optical system and / or the second optical system. The focusing operation member protrudes from the middle region of the back of the housing, and the protrusion height of the focusing operation member on the back of the housing is lower than the plane containing the common tangent of the first lens barrel and the second lens barrel.

[0005] Furthermore, The focusing assembly includes two focusing operation components, each of which is a focusing handwheel. The two focusing handwheels are located on both sides of the central axis of the housing and are respectively adjacent to the first lens barrel and the second lens barrel. The focusing handwheel adjacent to the first lens barrel is used to adjust the focal length of the first optical system, and the focusing handwheel adjacent to the second lens barrel is used to adjust the focal length of the second optical system.

[0006] Furthermore, The two focusing handwheels are arranged symmetrically about the central axis of the housing.

[0007] Furthermore, The focusing handwheel located near the first lens barrel is situated on the back of the first lens barrel and close to the side of the second lens barrel. The focusing handwheel located near the second lens barrel is situated on the back of the second lens barrel and close to the side of the first lens barrel.

[0008] Furthermore, The focusing assembly includes two focusing operation components, each being a focusing handwheel. The two focusing handwheels are arranged at intervals along the central axis of the housing. One focusing handwheel is used to adjust the focal length of the first optical system, and the other focusing handwheel is used to adjust the focal length of the second optical system. Alternatively, the focusing assembly includes a focusing operation component, which is a focusing handwheel. The focusing handwheel is disposed near the first lens barrel or the second lens barrel, and the focusing handwheel simultaneously adjusts the focal length of the first optical system and the second optical system. Alternatively, the focusing assembly includes the focusing operation component and a switching button. The focusing operation component is a focusing handwheel. The focusing handwheel and the switching button are located on both sides of the central axis of the housing and are respectively disposed adjacent to the first lens barrel and the second lens barrel. The focusing handwheel independently adjusts the focal length of the first optical system and the second optical system. The switching button is used to switch the focusing object of the focusing handwheel between the first optical system and the second optical system.

[0009] Furthermore, The rotation axis of the focusing handwheel is parallel to the central axis of the housing.

[0010] Furthermore, The back of the housing has an opening that communicates with the interior of the housing. A protective cover is connected to the inner wall of the housing and surrounds the opening. The focusing operation component is installed in the protective cover through the opening.

[0011] Furthermore, The housing also includes a connecting portion connecting the first lens barrel and the second lens barrel; Wherein, the back of the connecting part is formed with a concave surface, the concave surface is recessed along the back of the connecting part toward the front of the connecting part, and the focusing operation member protrudes from the concave surface of the connecting part; or, a part of the focusing operation member is located in the connecting part, and the remaining part of the focusing operation member is located on the back of the first lens barrel or the back of the second lens barrel.

[0012] Furthermore, An eyepiece is provided at one end of the first lens barrel and the second lens barrel respectively, and the focusing operation component is located axially adjacent to the eyepiece in the lens barrel.

[0013] Furthermore, Both the first optical system and the second optical system include an organic core assembly and an objective lens module; The focusing assembly further includes a transmission rod and a guide assembly. The movement assembly is mounted on the guide assembly, and the objective lens module is located on the side of the guide assembly away from the movement assembly. The transmission rod is connected to the focusing operation component and is throttledly connected to the guide assembly. The transmission rod is driven by the focusing operation component to move the guide assembly axially along the transmission rod, thereby moving the movement assembly mounted on the guide assembly relative to the objective lens module.

[0014] Furthermore, The focusing control component is a focusing handwheel; One end of the transmission rod is connected to the focusing handwheel, and the other end is threaded to the guide assembly. The transmission rod is used to drive the guide assembly to move along the axial direction of the transmission rod after being rotated by the focusing handwheel, thereby driving the movement assembly on the guide assembly to move relative to the objective lens module.

[0015] Furthermore, The binocular handheld telescope includes a force transmission component, which includes a moving block and a moving rod, and the focusing operation component is a focusing handwheel; One end of the moving rod is connected to the guide assembly, and the other end is connected to the moving block. One end of the transmission rod is connected to the focusing handwheel, and the other end is threaded to the moving block. The moving rod and the transmission rod are spaced apart and parallel to each other. The transmission rod is used to drive the moving block to move along the axial direction of the transmission rod after being rotated by the focusing handwheel, thereby driving the guide assembly to move along the axial direction of the transmission rod, and thus driving the movement assembly provided on the guide assembly to move relative to the objective lens module.

[0016] Compared with the prior art, the embodiments of this utility model have at least the following technical effects: This embodiment of the binocular handheld telescope includes a housing, an optical system, and a focusing assembly. The housing includes a first lens tube and a second lens tube arranged side by side. The optical system includes a first optical system and a second optical system, which are respectively disposed within the first lens tube and the second lens tube. The focusing assembly includes a focusing operation component, which is used to focus the first optical system and / or the second optical system. The focusing operation component protrudes from the middle area of ​​the back of the housing. The protrusion height of the focusing operation component on the back of the housing is lower than the plane of the common tangent of the first lens tube and the second lens tube. When the telescope is temporarily hung in front of the user's chest, the back of the housing rests against the user's chest. Because there is a gap between the focusing operation component and the plane of the common tangent, the focusing wheel is less likely to be accidentally touched by the user when the telescope is temporarily hung in front of the user, thus improving the user experience. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the first embodiment of the binocular handheld telescope; Figure 2 This is a front view of the first embodiment of the binocular handheld telescope; Figure 3 A three-dimensional schematic diagram of the first embodiment of the focusing mechanism in a binocular handheld telescope; Figure 4 for Figure 3 A three-dimensional schematic diagram of the transmission rod; Figure 5 A three-dimensional schematic diagram of a second embodiment of the focusing mechanism in a binocular handheld telescope; Figure 6 for Figure 5 Enlarged view of a portion of the image; Figure 7 This is a schematic diagram of an embodiment of a binocular handheld telescope where the guide tube and the objective lens module are connected in relative motion. Figure 8 This is a cross-sectional view of a first embodiment of a binocular handheld telescope; Figure 9 This is a top view of the first embodiment of the binocular handheld telescope; Figure 10 This is a top view of the second embodiment of the binocular handheld telescope; Figure 11 This is a top view of the third embodiment of the binocular handheld telescope; Figure 12 This is a top view of the fourth embodiment of the binocular handheld telescope; Figure 13 This is a top view of the fifth embodiment of the binocular handheld telescope.

[0018] Explanation of icon numbers: 10. Housing; 11. First lens tube; 12. Second lens tube; 13. Connecting part; 130. Concave surface; 14. Opening; 15. Eyepiece; 20. Optical system; 21. Movement assembly; 22. Objective lens module; 30. Focusing control components; 31. Handwheel cover; 32. Switching button; 33. Sealing ring; 40. Drive rod; 41. External threaded part; 42. Cap head; 420. Annular groove; 50. Guide assembly; 51. Guide cylinder; 52. Adjusting block; 60. Limit block; 70. Force transmission assembly; 71. Moving block; 710. Mounting slot; 72. Moving rod; 720. Boss; 80. Clamping block; 90. Guide post; 91. Sliding groove. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0020] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Please see Figure 1-7As shown, in some embodiments of this utility model, the binocular handheld telescope includes a housing 10, an optical system 20, and a focusing assembly. The housing 10 includes a first lens tube 11 and a second lens tube 12 arranged side-by-side and corresponding to both eyes. The optical system 20 includes a first optical system and a second optical system. The first optical system is disposed within the first lens tube 11, and the second optical system is disposed within the second lens tube 12, i.e., the first optical system and the second optical system are respectively disposed within the first lens tube 11 and the second lens tube 12. The focusing assembly includes a focusing operation component 30, which is used to adjust the focal length of the first optical system, the second optical system, or the first optical system and the second optical system. The focusing operation component 30 protrudes from the middle area of ​​the back surface of the housing 10. The protrusion height of the focusing operation component 30 on the back surface of the housing 10 is lower than the plane containing the common tangent plane of the first lens tube 11 and the second lens tube 12, i.e., there is a distance h between the focusing operation component 30 and the plane containing the common tangent plane (e.g., ...). Figure 2 (As shown). With the two lens tubes corresponding to the left and right eyes as directional references, the middle area of ​​the housing 10 refers to the area located in the middle of the left-right direction, that is, the area between the first lens tube 11 and the second lens tube 12. When the telescope is temporarily hung on the user's chest, the back of the housing 10 rests against the user's chest. Because there is a gap between the focusing operation component 30 and the plane containing the common tangent surface, there will also be a gap between the focusing operation component 30 and the user's chest. Therefore, when the telescope is temporarily hung on the user's chest, the focusing operation component is less likely to be accidentally touched by the user, thus improving the user experience. At the same time, placing the focusing operation component 30 in the middle area of ​​the back of the housing 10 can weaken the visual abruptness caused by its protrusion, thereby maintaining the overall aesthetics of the telescope.

[0022] The focusing control component 30 is mainly used for user hand operation. Specifically, it can be in the form of a handwheel, button, knob, etc. When a handwheel is used, part of the handwheel can be retracted inside the housing 10, and part of the handwheel can be exposed on the back of the housing 10 to facilitate manual operation from the back.

[0023] For further optimizations, please refer to [link / reference]. Figure 9As shown, in one embodiment of this utility model, the focusing assembly includes two focusing operation components 30, each of which is a focusing handwheel. The user can focus the optical system by rotating the focusing handwheel with their finger. The two focusing handwheels are located on opposite sides of the central axis of the housing 10. One focusing handwheel is adjacent to the first lens barrel 11, and the other is adjacent to the second lens barrel 12. The focusing handwheel adjacent to the first lens barrel 11 is used to adjust the focal length of the first optical system, and the focusing handwheel adjacent to the second lens barrel 12 is used to adjust the focal length of the second optical system. In this embodiment, the focusing handwheel adjacent to the first lens barrel 11 is configured to adjust the focal length of the first optical system, while the focusing handwheel adjacent to the second lens barrel 12 is configured to adjust the focal length of the second optical system. The left-right direction of the handwheel corresponds one-to-one with the left-right direction of the lens barrel, making it intuitive and easy for new users to learn. More specifically, in one embodiment, the two focusing handwheels are arranged symmetrically about the central axis of the housing 10 (e.g., ...). Figure 9 As shown), in this embodiment, the position of the aforementioned focusing handwheel conforms to the natural gripping habits of the human hands, making user operation more natural and comfortable, and improving the user experience. More specifically, in one embodiment, the focusing handwheel located near the first lens barrel 11 is situated on the back of the first lens barrel 11 and close to the side of the second lens barrel 12, and the focusing handwheel located near the second lens barrel 12 is situated on the back of the second lens barrel 12 and close to the side of the first lens barrel 11 (e.g. Figure 2 as well as Figure 5 As shown in the diagram, in this embodiment, based on the position of the focusing handwheel, when the user holds the first lens barrel 11 and the second lens barrel 12 with their left and right hands respectively, the user's thumb can easily move the focusing handwheel on the back, improving the user's ease of use. The rotation axis of each focusing handwheel is parallel to the central axis of the housing 10, that is, parallel to the axes of the two lens barrels. Thus, the user can easily move the focusing handwheel by sliding their thumb left and right, making operation more convenient.

[0024] For further optimizations, please refer to [link / reference]. Figure 10As shown, in some embodiments of this utility model, the focusing assembly includes two focusing operation components 30, each of which is a focusing handwheel. The user can focus the optical system by rotating the focusing handwheel with their finger. The two focusing handwheels are arranged at intervals along the central axis of the housing 10. One focusing handwheel is used to adjust the focal length of the first optical system, and the other is used to adjust the focal length of the second optical system. In this embodiment, by arranging two focusing handwheels at intervals along the central axis of the housing 10, and having each handwheel correspondingly adjust the focal length of one optical system, separate focusing of the two optical systems is achieved. In this embodiment, the focusing handwheel located at the front position is used to adjust the focal length of the first optical system, and the focusing handwheel located at the rear position is used to adjust the focal length of the second optical system. Of course, in other embodiments, the focusing handwheel located at the front position is used to adjust the focal length of the second optical system, and the focusing handwheel located at the rear position is used to adjust the focal length of the first optical system; this can be selected and set according to the user's specific needs. The rotation axis of each focusing handwheel is parallel to the central axis of the housing 10, so that the user can move the focusing handwheel by sliding it left and right with their thumb, making the operation more convenient.

[0025] In a further optimized embodiment of this invention, the focusing assembly includes a focusing operation component 30, which is a focusing handwheel. The focusing handwheel is positioned adjacent to either the first lens barrel 11 or the second lens barrel 12, and simultaneously adjusts the focal length of both the first optical system and the second optical system. In one embodiment, please refer to... Figure 11 As shown, the focusing wheel is positioned near the second lens barrel 12. When the user holds the telescope with both hands, they can simultaneously focus on both the first and second optical systems by moving the focusing wheel with their right thumb. Of course, in other embodiments, the focusing wheel can be positioned near the first lens barrel 11, depending on the user's needs. The rotation axis of the focusing wheel is parallel to the central axis of the housing 10, allowing the user to easily move the focusing wheel by sliding their thumb left or right.

[0026] In some further optimized embodiments of this utility model, the focusing assembly includes the focusing operation component 30 and the switching button 32. The focusing operation component 30 is a focusing handwheel. The focusing handwheel and the switching button 32 are located on opposite sides of the central axis of the housing 10, and are respectively adjacent to the first lens barrel 11 and the second lens barrel 12. The focusing handwheel independently adjusts the focal length of the first optical system and the second optical system. The switching button is used to switch the focusing object of the focusing handwheel between the first optical system and the second optical system. In one embodiment, please refer to... Figure 12 As shown, the focusing handwheel is located near the second lens barrel 12, and the switching button 32 is located near the first lens barrel 11. When the user holds the telescope with both hands, the right thumb can move the focusing handwheel to independently adjust the focal length of the first optical system and the second optical system, and the left thumb can press the switching button to switch the focusing target between the first optical system and the second optical system. In other embodiments, the focusing handwheel is located near the first lens barrel 11, and the switching button 32 is located near the second lens barrel 12. When the user holds the telescope with both hands, the left thumb can move the focusing handwheel to independently adjust the focal length of the first optical system and the second optical system, and the right thumb can press the switching button to switch the focusing target between the first optical system and the second optical system. The rotation axis of the focusing handwheel is parallel to the central axis of the housing 10 (e.g., ...). Figure 9 As shown in the image, users can easily adjust the focus wheel by sliding their thumb left or right.

[0027] Of course, in other embodiments, please refer to Figure 13 As shown, the focusing operation component 30 is a focusing handwheel. The rotation axis of the focusing handwheel can be arranged perpendicularly to the central axis of the housing 10 (the two axes are perpendicular to each other, meaning that the two axes are not in the same plane, but their direction vectors are perpendicular to each other). The user can rotate the focusing handwheel with his thumb to complete the focusing. In this embodiment, the focusing operation component 30 is disposed adjacent to the second lens barrel 12. In another embodiment, the focusing operation component 30 can be disposed adjacent to the first lens barrel 11. Alternatively, the focusing operation component 30 includes two components, which are respectively disposed adjacent to the first lens barrel 11 and the second lens barrel 12. The specific configuration can be selected according to the user's needs.

[0028] For a more optimized solution, please refer to Figure 5As shown, in one embodiment of this utility model, the back of the housing 10 is provided with an opening 14 communicating with the interior of the housing 10. A handwheel cover 31 is connected to the inner wall of the housing 10, and the handwheel cover 31 is arranged around the opening 14. The focusing operation component 30 is installed in the handwheel cover 31 through the opening 14. In this embodiment, the handwheel cover 31 is provided inside the housing 10, and the handwheel cover 31 is arranged around the opening 14. The focusing operation component 30 is disposed inside the handwheel cover 31. The handwheel cover 31 can act as a physical barrier, forming a surrounding shielding structure inside the housing 10, effectively preventing large particles of dust, sand, and splashing water vapor from entering the interior of the housing 10 through the opening 14, thus avoiding affecting the normal operation of the telescope. More specifically, in one embodiment of this utility model, sealing rings 33 abut against the handwheel cover 31 on both opposite sides along its axial direction of the focusing operation component 30. The double sealing rings 33 serve as elastic seals, forming radial compression seals on both axial sides of the focusing operation component 30. Even underwater or in heavy rain environments, they can prevent the infiltration of liquid water and water vapor. Furthermore, the abutment-type sealing ring structure always maintains axial preload on the focusing operation component 30, preventing the focusing operation component 30 from becoming loose or shifting due to frequent focusing, thus avoiding affecting the user's operating feel of the focusing operation component 30.

[0029] Furthermore, in one embodiment of this utility model, the housing 10 further includes a connecting portion 13 connecting the first lens barrel 11 and the second lens barrel 12. The back surface of the connecting portion 13 has a concave surface 130, which is recessed along the back surface of the connecting portion 13 towards the front surface. The focusing operation member 30 protrudes from the concave surface 130 of the connecting portion 13 (e.g., ...). Figure 1As shown in the diagram, in this embodiment, the focusing operation member 30 is disposed on the back of the housing 10 and protrudes from the concave surface 130 of the connecting portion 13. Based on the position of the focusing operation member 30, the user can easily move the focusing wheel with their thumb when holding the telescope, facilitating focusing and improving the user's ease of use. More specifically, in some embodiments of this invention, a portion of the focusing operation member 30 is located on the connecting portion 13, while the remaining portion is located on the back of the first lens barrel 11 or the back of the second lens barrel 12. That is, two focusing operation members 30 are respectively disposed at the connection points between the corresponding lens barrel and the connecting portion 13, spanning the corresponding lens barrel and the connecting portion 13. Understandably, for example, in one embodiment, the focusing operation member 30 includes two components: one focusing operation member 30 has a portion located on the connecting portion 13, the remaining portion of the other focusing operation member 30 is located on the back side of the first lens barrel 11, and the other focusing operation member 30 has a portion located on the connecting portion 13, with the remaining portion of the other focusing operation member 30 located on the back side of the second lens barrel 12. In another embodiment, the focusing operation member 30 includes one component, with a portion located on the connecting portion 13 and the remaining portion located on the back side of the first lens barrel 11. In yet another embodiment, the focusing operation member 30 includes one component, with a portion located on the connecting portion 13 and the remaining portion located on the back side of the second lens barrel 12. The specific configuration can be selected and configured according to user needs.

[0030] More specifically, in one embodiment of this utility model, as shown in Figure 9, an eyepiece 15 is respectively provided at one end of the first lens barrel 11 and the second lens barrel 12. The focusing operation component 30 is located close to the eyepiece 15 along the axial direction of the lens barrel. The objective lens module 22 and the eyepiece 15 are respectively located on both sides of the telescope lens barrel along the axial direction. Since users usually hold the telescope closer to the eyepiece end, in this embodiment, the focusing operation component 30 is located closer to the eyepiece 15 than the objective lens module 22, and can be located within the user's thumb operation area when the user holds it. Based on the position of the focusing operation component 30, the user operation is more natural and comfortable, improving the user's operating experience.

[0031] In some embodiments of this utility model, both the first optical system and the second optical system include a core assembly 21 and an objective lens module 22. The focusing assembly further includes a transmission rod 40 and a guide assembly 50. The core assembly 21 is disposed on the guide assembly 50, and the objective lens module 22 is located on the side of the guide assembly 50 away from the core assembly 21. The transmission rod 40 is connected to the focusing operation member 30 and is tractively connected to the guide assembly 50. The transmission rod 40 is used to drive the guide assembly 50 to move axially along the transmission rod 40 after being driven by the focusing operation member 30, thereby driving the core assembly 21 disposed on the guide assembly 50 to move relative to the objective lens module 22. The movement of the core assembly 21 relative to the objective lens module 22 realizes the focusing of the optical system. For example, in one embodiment, as shown in Figure 3, the focusing operation component 30 is a focusing handwheel. One end of the transmission rod 40 is connected to the focusing handwheel, and the other end is threadedly connected to the guide assembly 50. After the focusing handwheel rotates and drives the transmission rod 40, it causes the guide assembly 50 to move axially along the transmission rod 40, thereby causing the movement assembly 21 mounted on the guide assembly 50 to move relative to the objective lens module 22. In another embodiment, please refer to Figure 5 and... Figure 6 As shown, the binocular handheld telescope includes a force transmission component 70, which includes a moving block 71 and a moving rod 72. The focusing operation component 30 is a focusing handwheel. One end of the moving rod 72 is connected to the guide component 50, and the other end is connected to the moving block 71. One end of the transmission rod 40 is connected to the focusing handwheel, and the other end is threadedly connected to the moving block 71. The moving rod 72 and the transmission rod 40 are spaced apart and parallel to each other. After the transmission rod 40 is driven by the rotation of the focusing handwheel, it drives the moving block 71 to move along the axial direction of the transmission rod 40, thereby driving the guide component 50 to move along the axial direction of the transmission rod 40, and thus driving the movement component 21 provided on the guide component 50 to move relative to the objective lens module 22.

[0032] For more details, please refer to Figure 3-4As shown, in one embodiment of this utility model, the end of the transmission rod 40 connected to the guide assembly 50 is provided with an external threaded portion 41 and a cap head 42. The guide assembly 50 includes a guide cylinder 51 and an adjusting block 52 disposed outside the guide cylinder 51. The adjusting block 52 is provided with an adjusting hole for the transmission rod 40 to pass through. The adjusting hole is provided with an internal threaded portion, which is threadedly connected to the external threaded portion 41 of the transmission rod 40. The guide cylinder 51 is relatively movably connected to the objective lens module 22. The focusing mechanism also includes a limiting structure, which includes a limiting block 60 disposed on the objective lens module 22. The cap head 42 of the adjusting rod is provided with a ring. When the limiting block 60 is embedded in the annular groove 420, the transmission rod 40 cannot move relative to the objective lens module 22 along its own axis. When the focusing handwheel is turned to drive the transmission rod 40 to rotate, the external thread 41 of the transmission rod 40 is threadedly connected to the internal thread of the adjusting block 52, and the guide cylinder 51 is relatively movably connected to the objective lens module 22. Under the rotational driving action of the transmission rod 40, the guide cylinder 51 and the mechanism assembly 21 set on the guide cylinder 51 can move relative to the objective lens module 22. That is, the rotational movement of the transmission rod 40 is converted into the movement of the guide assembly 50, thereby adjusting the distance between the objective lens module 22 and the mechanism assembly 21 and realizing focusing.

[0033] More specifically, the transmission rod 40 has an external thread 41 at one end connected to the guide assembly 50. The guide assembly 50 includes a guide cylinder 51 and a force transmission assembly 70 disposed on the guide cylinder 51. The force transmission assembly 70 includes a moving block 71 and a moving rod 72. The moving block 71 has an internal thread that mates with the external thread 41 of the transmission rod 40. One end of the moving rod 72 is connected to the guide cylinder 51, and the other opposite end is connected to the moving block 71. The guide cylinder 51 is movably connected to the objective lens module 22. The torsion focusing handwheel can drive the transmission rod 40 to rotate. The moving block 71, which is threadedly connected to the transmission rod 40, moves along the axial direction of the transmission rod 40. The moving block 71 is connected to the guide cylinder 51 through the moving rod 72. The guide cylinder 51 is relatively movably connected to the objective lens module 22. Under the rotational drive of the transmission rod 40, the guide cylinder 51 and the mechanism assembly 21 set on the guide cylinder 51 can move relative to the objective lens module 22. That is, the rotational movement of the transmission rod 40 is converted into the movement of the guide assembly 50, thereby adjusting the distance between the objective lens module 22 and the mechanism assembly 21, that is, adjusting the distance between the objective lens module 22 and the image acquisition surface of the optical system to achieve focusing.

[0034] For more details, please refer to Figure 5-6As shown, in one embodiment of this utility model, the transmission rod 40 and the moving rod 72 are not coaxially arranged, which can adapt to the limited installation space inside the telescope housing 10. By utilizing the circumferential space inside the telescope tube, the axial space of the telescope tube is saved, that is, the length of the telescope tube is reduced. The moving rod 72 has a protruding boss 720 at one end connected to the moving block 71. The moving block 71 is provided with a mounting groove 710. The boss 720 is disposed in the mounting groove 710 and is clearance-fitted with the mounting groove 710. The moving block 71 is connected to a clamping block 80, which closes the opening of the mounting groove 710 to seal the boss 720 inside the mounting groove 710. In this embodiment, the boss 720 of the moving rod 72 and the mounting groove 710 of the moving block 71 are clearance-fitted, which facilitates smooth focusing by the focusing handwheel.

[0035] Please see Figure 7 As shown, in one embodiment of this utility model, the guiding assembly includes a guide cylinder 51, the transmission rod is tractively connected to the guide cylinder 51, the guide cylinder 51 is sleeved on the objective lens module 22, the objective lens module 22 has a protruding guide post 90, and the guide cylinder 51 has a sliding groove 91 along its axial direction, with the guide post 90 passing through the sliding groove 91. In this embodiment, the guide cylinder 51 is sleeved on the objective lens module 22, and the guide cylinder 51 can move relative to the objective lens module 22 along its axial direction, which can be rotational or linear. Simultaneously, the objective lens module 22 has a protruding guide post 90, which passes through the sliding groove 91 of the guide cylinder 51. The guide post 90 inserts into the sliding groove 91, further guiding the guide cylinder 51. The guide cylinder 51 can only move relative to the objective lens module 22 along its axial direction, achieving a relative movement connection between the guide cylinder 51 and the objective lens module 22.

[0036] It should be noted that the objective lens module 22 and the mechanism assembly 21 only need to move relative to each other to adjust the distance between them, thereby achieving focusing of the optical system. The focusing components in the aforementioned embodiments all achieve focusing by driving the mechanism assembly 21 to move relative to the objective lens module 22. This is only an illustrative example and not a limiting solution. In other embodiments, the focusing component can also achieve focusing by driving the objective lens module 22 to move relative to the mechanism assembly 21, or by driving the objective lens module 22 and / or the mechanism assembly 21 to move to adjust the distance between them. The specific settings can be selected according to user needs.

[0037] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A binocular handheld telescope, characterized in that, include: The housing (10) includes a first lens barrel (11) and a second lens barrel (12) arranged side by side; The optical system (20) includes a first optical system and a second optical system, which are respectively disposed in the first lens barrel (11) and the second lens barrel (12); The focusing assembly includes a focusing operation member (30) for adjusting the focal length of the first optical system and / or the second optical system. The focusing operation member (30) protrudes from the middle region of the back of the housing (10). The protrusion height of the focusing operation member (30) on the back of the housing (10) is lower than the plane of the common tangent of the first lens barrel (11) and the second lens barrel (12).

2. The binocular handheld telescope according to claim 1, characterized in that, The focusing assembly includes two focusing operation components (30), and the focusing operation component (30) is a focusing handwheel; The two focusing handwheels are located on both sides of the central axis of the housing (10) and are respectively arranged close to the first lens barrel (11) and the second lens barrel (12). The focusing handwheel arranged close to the first lens barrel (11) is used to adjust the focal length of the first optical system, and the focusing handwheel arranged close to the second lens barrel (12) is used to adjust the focal length of the second optical system.

3. The binocular handheld telescope according to claim 2, characterized in that, The two focusing handwheels are arranged symmetrically about the central axis of the housing (10).

4. The binocular handheld telescope according to claim 2, characterized in that, The focusing handwheel located near the first lens barrel (11) is on the back of the first lens barrel (11) and close to the side of the second lens barrel (12). The focusing handwheel located near the second lens barrel (12) is on the back of the second lens barrel (12) and close to the side of the first lens barrel (11).

5. The binocular handheld telescope according to claim 1, characterized in that, The focusing assembly includes two focusing operation components (30), each of which is a focusing handwheel. The two focusing handwheels are arranged back and forth at intervals along the central axis of the housing (10). One of the focusing handwheels is used to adjust the focal length of the first optical system, and the other focusing handwheel is used to adjust the focal length of the second optical system. Alternatively, the focusing assembly may include a focusing operation component (30), which is a focusing handwheel. The focusing handwheel is located near the first lens barrel (11) or the second lens barrel (12), and the focusing handwheel simultaneously adjusts the focal length of the first optical system and the second optical system. Alternatively, the focusing assembly includes the focusing operation component (30) and a switching button. The focusing operation component (30) is a focusing handwheel. The focusing handwheel and the switching button are located on both sides of the central axis of the housing (10) and are respectively adjacent to the first lens barrel (11) and the second lens barrel (12). The focusing handwheel independently adjusts the focal length of the first optical system and the second optical system. The switching button is used to switch the focusing object of the focusing handwheel between the first optical system and the second optical system.

6. The binocular handheld telescope according to any one of claims 2-5, characterized in that, The rotation axis of the focusing handwheel is parallel to the central axis of the housing (10).

7. The binocular handheld telescope according to claim 1, characterized in that, The back of the housing (10) is provided with an opening (14) that communicates with the interior of the housing (10). A protective cover (31) is connected to the inner wall of the housing (10). The protective cover (31) is arranged around the opening (14). The focusing operation component (30) is installed in the protective cover (31) through the opening (14).

8. The binocular handheld telescope according to claim 1, characterized in that, The housing (10) further includes a connecting portion (13) connecting the first lens barrel (11) and the second lens barrel (12); Wherein, a concave surface (130) is formed on the back side of the connecting part (13), the concave surface (130) is recessed along the back side of the connecting part (13) toward the front side of the connecting part (13), and the focusing operation member (30) protrudes from the concave surface (130) of the connecting part (13); or, a portion of the focusing operation member (30) is located on the connecting part (13), and the remaining portion of the focusing operation member (30) is located on the back side of the first lens barrel (11) or the back side of the second lens barrel (12).

9. The binocular handheld telescope according to claim 1, characterized in that, An eyepiece (15) is provided at one end of the first lens barrel (11) and the second lens barrel (12), and the focusing operation component (30) is provided axially near the eyepiece (15) of the lens barrel.

10. The binocular handheld telescope according to claim 1, characterized in that, Both the first optical system and the second optical system include an organic core assembly (21) and an objective lens module (22); The focusing assembly further includes a transmission rod (40) and a guide assembly (50). The movement assembly (21) is mounted on the guide assembly (50). The objective lens module (22) is located on the side of the guide assembly (50) away from the movement assembly (21). The transmission rod (40) is connected to the focusing operation component (30). The transmission rod (40) is connected to the guide assembly (50) in a transmission manner. The transmission rod (40) is used to drive the guide assembly (50) to move axially along the transmission rod (40) after being driven by the focusing operation component (30), thereby driving the movement assembly (21) mounted on the guide assembly (50) to move relative to the objective lens module (22).

11. The binocular handheld telescope according to claim 10, characterized in that, The focusing operation component (30) is a focusing handwheel; One end of the transmission rod (40) is connected to the focusing handwheel, and the other end is threaded to the guide assembly (50). The transmission rod (40) is used to drive the guide assembly (50) to move axially along the transmission rod (40) after being rotated by the focusing handwheel, thereby driving the movement assembly (21) provided on the guide assembly (50) to move relative to the objective lens module (22).

12. The binocular handheld telescope according to claim 10, characterized in that, The binocular handheld telescope includes a force transmission component (70), which includes a moving block (71) and a moving rod (72), and the focusing operation component (30) is a focusing handwheel; One end of the moving rod (72) is connected to the guide assembly (50), and the other end is connected to the moving block (71). One end of the transmission rod (40) is connected to the focusing handwheel, and the other end is threaded to the moving block (71). The moving rod (72) and the transmission rod (40) are spaced apart and parallel to each other. The transmission rod (40) is used to drive the moving block (71) to move axially along the transmission rod (40) after being rotated by the focusing handwheel, thereby driving the guide assembly (50) to move axially along the transmission rod (40), thereby driving the movement assembly (21) provided on the guide assembly (50) to move relative to the objective lens module (22).

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