Endoscope lens assembly, endoscope and endoscope system

Abstract

The utility model relates to the technical field of optical equipment, and provides an endoscope lens assembly, an endoscope and an endoscope system.The endoscope lens assembly comprises a lens fixing part, a lens moving part and an adsorption mechanism, the lens fixing part is of a cylindrical structure, and the lens fixing part is provided with a first center shaft; the lens moving part is arranged in the lens fixing part and can move relative to the lens fixing part; the lens moving part is provided with a second central shaft; the adsorption mechanism comprises a first magnetic component and a matching component, the first magnetic component is arranged on one of the lens fixing part and the lens moving part, and the matching component is arranged on the other one of the lens fixing part and the lens moving part; wherein the first magnetic component is magnetically attracted with the matching component, so that the lens moving part moves towards the inner wall of the lens fixing part, and the second central shaft is aligned with the first central shaft, and therefore, the problem that the coaxiality of the endoscope lens assembly is difficult to keep consistent in a zooming process can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical equipment, and in particular provides an endoscope lens assembly, an endoscope and an endoscope system. Background Art

[0002] In the field of endoscopy, the endoscope lens assembly needs to enter the patient's body. Therefore, in order to reduce the burden on the patient's body, usually, the overall volume of the endoscope lens assembly needs to be small enough, but at the same time it also needs to be able to obtain high-quality observation images and operating experience. Then, the endoscope lens assembly needs to have both small size and zoom function.

[0003] However, when the assembly space is extremely small, it is difficult to ensure the coaxiality of the endoscope lens assembly during zooming, which ultimately affects the quality of the observation image obtained by the endoscope lens assembly, as well as the operating experience of medical staff. Utility Model Content

[0004] The utility model aims to provide an endoscope lens assembly, an endoscope and an endoscope system, aiming to solve the problem that the coaxiality of the existing endoscope lens assembly is difficult to maintain consistency during the zooming process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] In a first aspect, an embodiment of the present application provides an endoscope lens assembly, comprising:

[0008] A lens fixing portion, wherein the lens fixing portion is a cylindrical structure and has a first central axis;

[0009] a lens moving part, the lens moving part being arranged in the lens fixing part and being movable relative to the lens fixing part, the lens moving part having a second central axis;

[0010] An adsorption mechanism, the adsorption mechanism comprising a first magnetic component and a matching component, the first magnetic component is arranged on one of the lens fixing part and the lens moving part, and the matching component is arranged on the other of the lens fixing part and the lens moving part;

[0011] The first magnetic component is magnetically matched with the matching component to move the lens moving part toward the inner wall of the lens fixing part, thereby achieving alignment of the second central axis with the first central axis.

[0012] Beneficial effects of the utility model: The endoscope lens assembly provided by the utility model realizes the coaxial arrangement of the lens moving part and the lens fixing part by means of magnetic attraction. Specifically, under the mutual magnetic attraction of the first magnetic component and the matching component, the lens moving part moves toward the inner wall of the lens fixing part during the movement relative to the lens fixing part or after the movement relative to the lens fixing part is completed, so that the second center axis is aligned with the first center axis, thereby improving the problem that the coaxiality of the endoscope lens assembly is difficult to maintain consistency during the zooming process.

[0013] In some embodiments, both the first magnetic component and the matching component include a first permanent magnet; or, the first magnetic component includes a first permanent magnet, and the matching component includes a metal piece that can be magnetically attracted by the first permanent magnet.

[0014] By adopting the above technical solution, the first magnetic component and the matching component are both first permanent magnets, or the first magnetic component is the first permanent magnet, and the matching component includes a metal part. In this way, before the lens moving part moves relative to the lens fixing part, the coaxiality of the two is improved by magnetic attraction.

[0015] In some embodiments, the first magnetic component and the matching component are capable of selectively magnetically attracting each other;

[0016] The first magnetic component and the matching component both include a first magnetically controllable component; or,

[0017] The first magnetic component includes a first magnetically controllable component, and the matching component includes a first permanent magnet or a metal part that can be attracted by magnetism; or,

[0018] The first magnetic component includes a first permanent magnet, and the matching component includes a first magnetically controllable component.

[0019] By adopting the above technical solution, the first magnetic attraction component and the matching component can be selectively magnetically attracted to each other according to specific usage requirements. In this way, after the lens moving part moves relative to the lens fixing part, the lens moving part moves toward the inner wall of the lens fixing part, at this time, the second center axis is aligned with the first center axis.

[0020] In some embodiments, the endoscope lens assembly also includes a positioning structure, which includes a first part and a second part that adapt to each other, one of the lens fixing part and the lens moving part is provided with the first part, and the other of the lens fixing part and the lens moving part is provided with the second part, so that the second center axis is aligned with the first center axis.

[0021] By adopting the above technical solution, a positioning structure is added. Specifically, the first part and the second part are respectively arranged on the lens fixing part and the lens moving part according to usage requirements, so as to realize that the second center axis is aligned with the first center axis during the relative movement of the lens moving part.

[0022] In some embodiments, a first wedge-shaped surface is disposed on the first portion, and a second wedge-shaped surface matching the first wedge-shaped surface is disposed on the second portion.

[0023] By adopting the above technical solution and utilizing the adaptive connection between the first wedge-shaped surface and the second wedge-shaped surface, the coaxial accuracy of the lens moving part in the process of axial movement relative to the lens fixing part is further improved.

[0024] In some embodiments, the endoscope lens assembly also includes a driving unit, which is used to drive the lens moving unit to move axially relative to the lens fixing unit; the driving unit includes a second permanent magnet and a second magnetically controllable component, the second permanent magnet is arranged on one of the lens fixing unit and the lens moving unit, and the second magnetically controllable component is arranged on the other of the lens fixing unit and the lens moving unit.

[0025] By adopting the above technical solution, the driving part is used to drive the lens moving part to move axially relative to the lens fixing part. Here, the driving part can be any one of a motor, a traction wire, and a mutual magnetic attraction mechanism. The second magnetic controllable component generates a magnetic field when powered on, and forms a mutual magnetic attraction force with the magnetic field of the second permanent magnet, so that the lens moving part moves toward the lens fixing part.

[0026] In some embodiments, the second permanent magnet is a block permanent magnet, each of the block permanent magnets is arranged at equal intervals around the lens moving part with the second central axis of the lens moving part as the center, and the second magnetic controllable component is wound around the moving fixed part; or,

[0027] The second permanent magnet is a tubular permanent magnet, which is sleeved on the lens fixing part. A plurality of the second magnetic controllable components are arranged at equal intervals around the lens moving part with the second central axis of the lens moving part as the center.

[0028] By adopting the above technical solution, the second permanent magnet is selectively set on the lens fixing part or the lens moving part according to the shape of the second permanent magnet. At the same time, the second magnetically controllable component is wound on the lens moving part or the lens fixing part. The second magnetically controllable component forms a magnetic field when powered on. The magnetic flux lines of the magnetic field formed by the second magnetically controllable component interact with the magnetic flux lines of the magnetic field of the permanent magnet, so that the lens moving part moves axially relative to the lens fixing part.

[0029] In some embodiments, the endoscope lens assembly further includes a first fixing assembly and a second fixing assembly, both of which are cylindrical structures, and the first fixing assembly and the second fixing assembly are respectively mounted on opposite ends of the lens fixing portion, and the endoscope lens assembly further includes a first elastic member and a second elastic member, and the lens moving portion has a first end and a second end relatively arranged, the first elastic member is arranged between the end of the first fixing assembly and the first end, and the second elastic member is arranged between the end of the second fixing assembly and the second end.

[0030] By adopting the above technical solution, the first fixing assembly and the second fixing assembly are used to limit and fix the lens fixing part, so that the lens moving part reciprocates between the end of the first fixing assembly and the end of the second fixing assembly. At the same time, the first elastic member and the second elastic member push the lens moving part to the corresponding position to maintain force balance, and can also play a corresponding resetting role.

[0031] In some embodiments, a first groove is formed at an end of the first fixing component, an end of the lens fixing portion and a groove wall of the first groove are enclosed to form a first accommodating cavity, the first elastic member is stepped, the first elastic member includes a first elastic section and a second elastic section, the first elastic section is placed in the first accommodating cavity, and the second elastic section abuts against the first end, and / or;

[0032] A second groove is formed at the end of the second fixing component, and the other end of the lens fixing portion is enclosed with the groove wall of the second groove to form a second accommodating cavity. The second elastic member is step-shaped, and the second elastic member includes a third elastic segment and a fourth elastic segment. The third elastic segment is placed in the second accommodating cavity, and the fourth elastic segment abuts against the second end.

[0033] By adopting the above technical solution, the first elastic section of the first elastic member is more stably connected to the first fixing assembly, and the third elastic section of the second elastic member is more stably connected to the second fixing assembly. Specifically, the first elastic section is confined in the first accommodating cavity, and the third elastic section is confined in the second accommodating cavity.

[0034] In some embodiments, the lens moving portion includes a main body portion with a columnar structure, a first protrusion structure provided on one end of the main body portion, and a second protrusion structure provided on the other end of the main body portion, the first protrusion structure is used to abut against the end of the first fixing component, the second protrusion structure is used to abut against the end of the second fixing component, and the main body portion rolls or slides relative to the lens fixing portion.

[0035] By adopting the above technical solution, the main body can be used to install optical elements such as lenses; when the first protruding structure abuts against the first fixing component, the main body is located at the corresponding preset position in the lens fixing part; and when the second protruding structure abuts against the second fixing component, the main body is located at the corresponding preset position in the lens fixing part, thereby meeting different zoom requirements.

[0036] In a second aspect, an embodiment of the present application further provides an endoscope, comprising the endoscope lens assembly described above.

[0037] In a third aspect, an embodiment of the present application further provides an endoscope system, including a display, a light source host, a zoom control device, and the endoscope lens assembly described above.

[0038] It can be understood that the beneficial effects of the second and third aspects of the present application can refer to the beneficial effects stated in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 An exploded view of an endoscope lens assembly provided in an embodiment of the utility model;

[0041] Figure 2 An exploded view of the endoscope lens assembly provided by an embodiment of the utility model from another angle;

[0042] Figure 3 A cross-sectional view of an endoscope lens assembly provided by an embodiment of the utility model;

[0043] Figure 4 A cross-sectional view of the endoscope lens assembly from another angle provided in the first embodiment of the utility model;

[0044] Figure 5 A cross-sectional view of the lens moving part of the endoscope lens assembly provided in the first embodiment of the utility model at a wide-angle position;

[0045] Figure 6 A cross-sectional view of the lens moving part of the endoscope lens assembly provided in the first embodiment of the utility model at a distant view position;

[0046] Figure 7 An exploded view of an endoscope lens assembly provided in Embodiment 2 of the present utility model;

[0047] Figure 8 A cross-sectional view of an endoscope lens assembly provided in Embodiment 3 of the present utility model;

[0048] Fig. 9 An exploded view of an endoscope lens assembly provided in Embodiment 3 of the present utility model;

[0049] Fig.10 A partial cross-sectional view of an endoscope lens assembly provided in Embodiment 4 of the present utility model;

[0050] Fig.11 A schematic structural diagram of a lens moving portion of an endoscope lens assembly provided in an embodiment of the utility model;

[0051] Fig.12 A schematic structural diagram of another angle of the lens moving part of the endoscope lens assembly provided by an embodiment of the utility model;

[0052] Fig.13 A front view of the lens moving portion of the endoscope lens assembly provided in Embodiment 5 of the present utility model;

[0053] Fig.14 A cross-sectional view of an endoscope lens assembly provided in Embodiment 6 of the present utility model;

[0054] Fig.15 A schematic structural diagram of an endoscope provided in an embodiment of the utility model.

[0055] Among them, the reference numerals in the figure are:

[0056] 100. Endoscope lens assembly;

[0057] 10. Lens fixing portion; 10a. First central axis;

[0058] 20, lens moving part; 20a, second central axis; 20b, first end; 20c, second end; 21, main body; 22, first protruding structure; 23, second protruding structure; 24, ball bearing; 25, receiving groove; 26, blocking part;

[0059] 30. adsorption mechanism; 31. first magnetic component; 32. matching component;

[0060] 40. Positioning structure; 41. First portion; 42. Second portion; 411. First wedge-shaped surface; 421. Second wedge-shaped surface;

[0061] 50. driving unit; 51. second permanent magnet; 52. second magnetic controllable component;

[0062] 61, first fixing assembly; 611, first groove; 62, second fixing assembly; 621, second groove;

[0063] 71, first elastic member; 711, first elastic section; 712, second elastic section; 72, second elastic member; 721, third elastic section; 722, fourth elastic section;

[0064] 80. Base. DETAILED DESCRIPTION

[0065] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0066] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the field of endoscopes, the endoscope lens assembly is an important component in the head end of the endoscope insertion part. The size of the endoscope lens assembly will directly affect the size of the entire insertion part, thereby affecting the patient's experience during the final inspection process. In actual applications, the radial dimensions of the insertion part will vary depending on the type of endoscope, but the radial dimensions of most insertion parts are less than 1 cm. Therefore, the overall volume of the endoscope lens assembly needs to be small enough to reduce the burden on the patient's body. At the same time, it is also necessary to be able to obtain high-quality observation images and operating experience. Then, the endoscope lens assembly should also ensure the corresponding zoom function. Therefore, in such a small space structure, the coaxiality of the endoscope lens assembly during the zoom process is difficult to guarantee.

[0070] In order to solve the above problems, a guide structure such as a guide column can be provided in the endoscope lens assembly to improve the coaxiality during the zooming process under the guiding effect of the guide column.

[0071] However, the overall volume of the endoscope lens assembly is too small, and the installation space for guide structures such as guide posts is also very small. Therefore, the installation of guide structures such as guide posts in such a small space increases the difficulty of the operator's work. Moreover, it is difficult to maintain the coaxiality of guide structures such as guide posts with the endoscope lens assembly during the installation process.

[0072] In view of this, the present application provides an endoscope lens assembly, wherein an adsorption mechanism is additionally provided, the adsorption mechanism comprising a first magnetic component and a matching component that can be magnetically attracted to each other, the first magnetic component being provided on one of the lens fixing part and the lens moving part, and the matching component being provided on the other of the lens fixing part and the lens moving part. Then, when the first magnetic component and the matching component are magnetically attracted to each other, the lens moving part can be moved toward the inner wall of the lens fixing part, and finally the second center axis and the first center axis are coincident. Compared with setting a guide structure, the adsorption mechanism provided by the present application requires a lower installation progress in assembly, and it is easier to achieve the coaxiality requirement of the endoscope lens assembly during the zooming process.

[0073] Please refer to Figures 1 to 4 An embodiment of the present application provides an endoscope lens assembly 100, including a lens fixing portion 10, a lens moving portion 20 and an adsorption mechanism 30.

[0074] The lens fixing part 10 is a cylindrical structure, and the lens fixing part 10 has a first central axis 10a;

[0075] The lens moving part 20 is disposed in the lens fixing part 10 and can move relative to the lens fixing part 10. The lens moving part 20 has a second central axis 20a.

[0076] The adsorption mechanism 30 includes a first magnetic component 31 and a matching component 32 that can be magnetically attracted to each other. The first magnetic component 31 is provided on one of the lens fixing part 10 and the lens moving part 20, and the matching component 32 is provided on the other of the lens fixing part 10 and the lens moving part 20.

[0077] The first magnetic component 31 and the matching component 32 can be magnetically matched with each other, so that the lens moving part 20 moves toward the inner wall of the lens fixing part 10, and the second central axis 20a is aligned with the first central axis 10a.

[0078] It can be understood that the lens fixing part 10 is the main body of the endoscope lens assembly 100, similar to the external structure such as the housing and the frame. The lens fixing part 10 is a cylindrical structure, that is, its radial cross section is a circular structure or a circular structure, which is convenient for the lens moving part 20 to move relatively therein. Of course, an optical lens can also be arranged in the lens fixing part 10, and together with the optical lens in the lens moving part, an optical lens group is formed to realize zoom imaging. The first central axis 10a is the optical axis of the optical lens of the lens fixing part 10, and is also the optical axis of the endoscope lens assembly 100.

[0079] The lens moving part 20 is a movable part in the endoscope lens assembly 100, which is used to carry the optical lens. The outer contour of the lens moving part 20 should be adapted to the internal space of the lens fixing part 10, so as to be able to move smoothly in the lens fixing part 10. The second central axis 20a is the optical axis of the optical lens in the lens moving part 20. When the adsorption mechanism 30 is in the non-working stage, the second central axis 20a is generally parallel or substantially parallel to the first central axis 10a, and a certain distance is formed between the two. When the adsorption structure is in the working stage, the lens moving part 20 moves toward the inner wall direction of the lens fixing part 10, and the second central axis 20a is aligned with the first central axis 10a, that is, the lens moving part 20 and the optical lens in the lens fixing part 10 are coaxially arranged. It should be noted that in the embodiment of the present application, "coincidence", "alignment" and "coaxial" all refer to the complete coincidence or substantial coincidence between the two optical axes, wherein substantial coincidence refers to coincidence or alignment within a certain manufacturing error range. After the optical axis of the lens moving part 20 is aligned with the optical axis of the lens fixing part 10 , when the lens moving part 20 moves relative to the lens fixing part 10 , the lens zoom stability and clarity of the endoscope lens assembly can be improved.

[0080] The first magnetic component 31 and the matching component 32 of the adsorption mechanism 30 can be magnetically attracted to each other. In the selection of the magnetic attraction method, the first magnetic component 31 and the matching component 32 can always be in a state of mutual magnetic attraction. Then, from beginning to end, the lens moving part 20 and the lens fixing part 10 are coaxially arranged. For example, the first magnetic component 31 and the matching component 32 are permanent magnets such as magnets, or the first magnetic component 31 is a permanent magnet such as a magnet, and the matching component 32 is a metal such as iron, cobalt, nickel and its alloy, which can be magnetically attracted by permanent magnets. In the initial assembly of the endoscope lens assembly 100, under the magnetic attraction of the first magnetic component 31 and the matching component 32, the second center axis 20a is aligned with the first center axis 10a. Achieving axial alignment by magnetic attraction can reduce the difficulty of assembly, thereby reducing the precision error that may be caused by assembly, and thus improving the accuracy of axial alignment.

[0081] Alternatively, the first magnetic component 31 and the matching component 32 can be selectively connected by magnetic attraction, that is, the two can be selected according to the specific usage scenario, for example, at least one of the first magnetic component 31 and the matching component 32 is a magnetic controllable component, and in the electrical control state, a magnetic attraction force will be generated between the two to provide a power source for the lens moving part 20 to move toward the inner wall of the lens fixing part 10. In the electrical control state, there is no magnetic attraction force between the first magnetic component 31 and the matching component 32, at this time, the second central axis 20a is staggered with the first central axis 10a, that is, the lens moving part 20 and the lens fixing part 10 are in a non-coaxial setting state.

[0082] In this way, the adsorption mechanism 30 is used to realize the coaxial setting of the lens moving part 20 and the lens fixing part 10, which provides corresponding convenience for the endoscope lens assembly 100 during the assembly process. That is, in the initial stage of assembly, the lens moving part 20 is also in a non-coaxial state with the lens fixing part 10, so that the assembly difficulty of the operator can be reduced.

[0083] It should be particularly noted that the magnetic controllable component in the embodiment of the present application refers to a component in which magnetism can be controlled, wherein the magnet can be controlled including the control of the presence or absence of magnetic force and the control of the magnitude of the magnetic force. The embodiment of the present application does not make too many restrictions on the specific structural type and control principle of the magnetic controllable component, and can be set by technical personnel according to actual needs. For example, in some optional embodiments, a magnetic body such as a coil that can directly realize magnetic force control by the size of the power supply can be used as a magnetic controllable component. In other optional embodiments, the magnetic controllable component can be realized by combining a magnetic body with a magnetic force size control structure, such as a combination of a magnetic body or a displacement structure, or a combination of a magnetic body and a shielding structure, and the magnetic controllability of the overall combination is realized by controlling the position of the magnetic body or the degree of shielding. Among them, the magnetic body can be a magnetic controllable device such as a permanent magnet or a coil. For the convenience of explanation, if not otherwise specified, the following embodiments are all illustrated by taking the magnetic controllable component as a coil as an example, and the magnetic controllability is realized by controlling the power supply state (such as whether it is powered on and the size of the power supply).

[0084] The endoscope lens assembly 100 provided by the utility model realizes the coaxial arrangement of the lens moving part 20 and the lens fixing part 10 by means of magnetic attraction. Specifically, under the mutual magnetic attraction of the first magnetic component 31 and the matching component 32, the lens moving part 20 moves toward the inner wall of the lens fixing part 10 during the movement relative to the lens fixing part 10 or after the movement relative to the lens fixing part 10 is completed, so that the second central axis 20a coincides with the first central axis 10a, thereby improving the problem that the coaxiality of the endoscope lens assembly 100 is difficult to maintain consistency during the zooming process.

[0085] In some embodiments, the first magnetic component 31 and the matching component 32 both include first permanent magnets.

[0086] It can be understood that the first permanent magnet refers to a material or device having permanent magnetism, and common permanent magnets include neodymium iron boron, cobalt steel, barium ferrite, and samarium cobalt.

[0087] Furthermore, in this embodiment, the first magnetic component 31 and the matching component 32 are always in a state of magnetic attraction, so the lens moving part 20 and the lens fixing part 10 also meet the coaxial setting requirement in the initial assembly.

[0088] Alternatively, in other embodiments, the first magnetic component 31 includes a first permanent magnet, and the matching component 32 includes a metal piece that can be magnetically attracted by the first permanent magnet.

[0089] Here, the metal piece is a metal such as iron, cobalt, nickel or an alloy thereof which can be magnetically attracted by the first permanent magnet.

[0090] In this way, the first magnetic component 31 and the matching component 32 always maintain a state of magnetic attraction, so that before the lens moving part 20 moves relative to the lens fixing part 10, the two are ensured to be coaxially arranged.

[0091] In some embodiments, the first magnetic component 31 and the matching component 32 can selectively be magnetically attracted to each other.

[0092] It can be understood that the first magnetic component 31 and the matching component 32 can selectively attract each other magnetically in the power-on state, as follows:

[0093] When the first magnetic component 31 and the matching component 32 both include a first magnetically controllable component, then when both first magnetically controllable components are powered on, the first magnetic component 31 and the matching component 32 are magnetically attracted to each other, and when both first magnetically controllable components are not powered on, the first magnetic component 31 and the matching component 32 release their mutual magnetic attraction relationship.

[0094] Alternatively, the first magnetic component 31 includes a first magnetic controllable component, and the matching component 32 includes a first permanent magnet. Then, when the first magnetic component 31 is energized, the first magnetic component 31 and the matching component 32 are magnetically attracted to each other, and when the first magnetic component 31 is not energized, the first magnetic component 31 and the matching component 32 release their mutual magnetic attraction relationship.

[0095] Alternatively, the first magnetic component 31 includes a first permanent magnet, and the matching component 32 includes a first magnetic controllable component. Then, when the matching component 32 is powered on, the first magnetic component 31 and the matching component 32 are magnetically attracted to each other, and when the matching component 32 is not powered on, the first magnetic component 31 and the matching component 32 are no longer magnetically attracted to each other.

[0096] Alternatively, the matching component 32 includes a metal part that can be magnetically attracted, the first magnetic component 31 includes a first magnetically controllable component, and the first magnetically controllable component and the metal part can selectively magnetically attract each other. Then, when the first magnetically controllable component is powered on, the first magnetic component 31 and the matching component 32 are magnetically attracted to each other, and when the first magnetically controllable component is not powered on, the first magnetic component 31 and the matching component 32 are no longer magnetically attracted to each other.

[0097] The first magnetically controllable component includes, but is not limited to, a combination of a coil, a magnetic component and a displacement structure, or a combination of a magnetic component and a shielding structure.

[0098] In summary, the specific structural form of the magnetic body can be selected according to actual use requirements and reserved assembly space.

[0099] For example, Figure 1As shown, a coil is arranged on the inner wall of the lens fixing part 10, and a block permanent magnet is arranged on the outer wall of the lens moving part 20. In this way, when the coil is energized, a magnetic field is formed to magnetically attract the block permanent magnet, and the lens moving part 20 abuts against the inner wall of the lens fixing part 10 along the radial direction of the lens fixing part 10.

[0100] For example, Figure 7 As shown, a coil is arranged on the inner wall of the lens fixing part 10, and another coil is arranged on the outer wall of the lens moving part 20. Thus, when the coil is energized, a magnetic field is formed to magnetically attract the annular permanent magnet, and the lens moving part 20 abuts against the inner wall of the lens fixing part 10 along the radial direction of the lens fixing part 10.

[0101] In this way, the two magnetic bodies can be selectively attracted to each other according to specific usage requirements. After the lens moving part 20 moves relative to the lens fixing part 10, the lens moving part 20 moves toward the inner wall of the lens fixing part 10. At this time, the second center axis 20a coincides with the first center axis 10a. In this way, the adverse effects caused by the continuous magnetic attraction and friction between the lens moving part 20 and the lens fixing part 10 can also be reduced. For example, the probability of jitter during image acquisition can be reduced, and the clarity of the acquired image can also be improved.

[0102] Please refer to Figure 2 and Figure 3 In some embodiments, the endoscope lens assembly 100 further includes a positioning structure 40, the positioning structure 40 includes a first portion 41 and a second portion 42 that are adapted to each other, one of the lens fixing portion 10 and the lens moving portion is provided with the first portion 41, and the other of the lens fixing portion 10 and the lens moving portion 20 is provided with the second portion 42, so that the second center axis is aligned with the first center axis.

[0103] It can be understood that the lens moving part 20 can choose to first move axially relative to the lens fixing part 10, and then move toward the inner wall of the lens fixing part 10 under the action of the adsorption mechanism 30, or it can choose to first move toward the inner wall of the lens fixing part 10 under the action of the adsorption mechanism 30, and then move axially relative to the lens fixing part 10. No matter which of the above situations is adopted, when the lens moving part 20 and the lens fixing part 10 are coaxially arranged, there is a problem that the overlap accuracy needs to be improved, that is, to meet the stability of the endoscope lens assembly 100 during the zooming process, otherwise, the coaxiality setting between the two is difficult to maintain.

[0104] Therefore, a positioning structure 40 may be added to improve the coaxiality accuracy between the lens moving part 20 and the lens fixing part 10 .

[0105] The first part 41 and the second part 42 are structures that can be matched to meet the positioning requirements between the lens fixing part 10 and the lens moving part 20. For example, the first part 41 may include a convex part, and the second part 42 includes a concave part matched with the convex part; or, the second part 42 may include a convex part, and the first part 41 includes a concave part matched with the convex part; or, the first part 41 includes a convex part and a concave part, similar to a gear structure, of course, here, multiple convex parts and multiple concave parts can be continuously and alternately arranged, or can be non-continuously arranged; the second part 42 includes a concave part matched with the convex part and a convex part matched with the concave part.

[0106] For example, the positioning structure 40 may include a protrusion and a groove that are adapted to each other. For example, when the lens moving part 20 first moves relative to the axial direction of the lens fixing part 10, and then moves toward the inner wall of the lens fixing part 10 under the action of the adsorption mechanism 30, at this time, the protrusion may be a positioning column, and the groove may be a positioning hole. At a specific position, the positioning column is inserted into the positioning hole, and the lens moving part 20 does not move relative to the lens fixing part 10 in the axial direction. For another example, when the lens moving part 20 first moves toward the inner wall of the lens fixing part 10 under the action of the adsorption mechanism 30, and then moves relative to the axial direction of the lens fixing part 10, the protrusion may be a convex rib extending along the direction of the first central axis 10a, and the groove may also be a sliding groove extending along the direction of the first central axis 10a. Then, when the lens moving part 20 moves relative to the lens fixing part 10 along the axial direction, the limiting effect of the convex rib and the sliding groove can also maintain the continuous overlap of the second central axis 20a with the first central axis 10a.

[0107] Thus, the positioning structure 40 is added to improve the alignment accuracy of the second central axis 20 a and the first central axis 10 a , especially the dynamic alignment accuracy of the lens moving part 20 and the lens fixing part 10 in a relative moving state.

[0108] In some embodiments, the first portion 41 includes a first concave portion and / or a first convex portion, and the second portion 42 includes a second convex portion matched with the first concave portion and / or a second concave portion matched with the first convex portion.

[0109] It can be understood that the first convex portion and the second convex portion include but are not limited to convex columns, convex ribs, protrusions, etc., and the first concave portion and the second concave portion include but are not limited to pits, grooves, and cavities, etc.

[0110] Meanwhile, the first convex portion and the second convex portion may be connected to the lens fixing portion 10 or the lens moving portion 20 in an integrally formed manner or in a detachable manner.

[0111] Similarly, the first recess and the second recess may be pits, grooves or cavities directly formed on the lens fixing part 10 or the lens moving part 20, or may be corresponding recesses formed on a block-shaped or plate-shaped carrier and then arranged on the lens fixing part 10 or the lens moving part 20 by integral molding or detachable connection.

[0112] For example, Figure 3 As shown, a first convex portion is arranged on the outer wall of the lens moving portion 20, and the first convex portion is a convex rib, which extends in the direction of the second center axis 20a, and a second concave portion is arranged on the arc plate, and the second concave portion is a groove matched with the convex rib, and one side of the arc plate is connected to the inner wall of the lens fixing portion 10. At this time, when the lens moving portion 20 moves axially relative to the lens fixing portion 10, the convex rib and the groove are matched to realize the coaxial positioning of the lens moving portion 20 and the lens fixing portion 10.

[0113] Or, for example, a first convex portion is provided on the inner wall of the lens fixing portion 10, and the first convex portion is a positioning block, and a second concave portion is provided on the outer wall of the lens moving portion 20, and the second concave portion is a pit adapted to the positioning block. At this time, when the lens moving portion 20 needs to be moved to a preset position relative to the lens fixing portion 10, under the action of the adsorption mechanism 30, the lens moving portion 20 moves toward the inner wall of the lens fixing portion 10, then, the positioning block is placed in the corresponding pit to realize coaxial positioning of the lens moving portion 20 relative to the lens fixing portion 10 at the preset position.

[0114] Alternatively, when the first portion 41 includes a plurality of first convex portions and a plurality of second concave portions, the first portion 41 is similar to a gear structure. Similarly, the second portion 42 matched with the first portion 41 is also a gear structure-like structure.

[0115] In this way, the positioning requirement of the coaxial arrangement of the lens moving part 20 and the lens fixing part 10 is achieved by utilizing the adaptive connection of the convex part and the concave part, so as to improve the accuracy of the coaxial arrangement.

[0116] Please refer to Figure 2 and Figure 3 In some embodiments, a first wedge-shaped surface 411 is provided on the first portion 41 , and a second wedge-shaped surface 421 matched with the first wedge-shaped surface 411 is provided on the second portion 42 .

[0117] It can be understood that the first wedge surface 411 is an inclined surface formed on the outer wall of the first part 41, and the second wedge surface 421 is an inclined surface formed on the inner wall of the second part 42. When the first part 41 and the second part 42 are adapted, the two wedge surfaces are in direct contact and guide accordingly. At the same time, by providing the corresponding wedge surfaces, the smoothness of the adaptation of the first part 41 and the second part 42 is also improved. In addition, the coaxial accuracy of the lens moving part 20 and the lens fixing part 10 when relative movement occurs can be further improved.

[0118] For example, Figure 3 As shown, two first wedge surfaces 411 are provided on the first portion 41, and the two first wedge surfaces 411 are symmetrically arranged about the second central axis 20a, and two second wedge surfaces 421 are formed on the inner wall of the second portion 42, and the two second wedge surfaces 421 are symmetrically arranged about the first central axis 10a. Under the adsorption action of the adsorption mechanism 30, when the first portion 41 and the second portion 42 are adapted, each first wedge surface 411 and the corresponding second wedge surface 421 are matched, so as to limit the displacement of the lens moving portion 20 relative to the lens fixing portion 10 in a direction perpendicular to the adsorption direction.

[0119] In this way, the first wedge surface 411 and the second wedge surface 421 are adapted to be connected, so as to further improve the coaxial accuracy of the lens moving part 20 in the process of axial movement relative to the lens fixing part 10 .

[0120] Please refer to Figure 2 , Figure 7 , Figure 8 and Fig. 9 In some embodiments, the endoscope lens assembly 100 further includes a driving unit 50 , and the driving unit 50 is used to drive the lens moving unit 20 to move axially relative to the lens fixing unit 10 .

[0121] It can be understood that the driving part 50 can be a motor, which provides power for the lens moving part 20 to move relative to the lens fixing part 10. For example, the output end of the motor is connected to a screw mechanism or a screw-like mechanism, and the lens moving part 20 is connected to the movable part of the screw mechanism.

[0122] Alternatively, the driving part 50 is a traction wire, the proximal end of the traction wire is connected to the lens moving part 20 , and the distal end of the traction wire is manually pulled to provide power to the lens moving part 20 .

[0123] Alternatively, the driving part 50 includes a permanent magnet and a powered coil magnetically adapted to the permanent magnet, that is, driven by the magnetic field formed by the powered coil, the permanent magnet drives the lens moving part 20 to move axially relative to the lens fixing part 10.

[0124] In this way, the driving part 50 is used to drive the lens moving part 20 to move axially relative to the lens fixing part 10. Here, the driving part 50 can be any one of a motor, a traction wire, and a mutual magnetic attraction mechanism.

[0125] Please refer to Figure 2 , Figure 7 and Figure 8 In some embodiments, the driving unit 50 includes a second permanent magnet 51 and a second magnetically controllable component 52, the second permanent magnet 51 is disposed on one of the lens fixing unit 10 and the lens moving unit 20, and the matching component 32 is disposed on the other of the lens fixing unit 10 and the lens moving unit 20.

[0126] It can be understood that the second magnetically controllable component 52 includes but is not limited to a combination of a coil, a magnetic component and a displacement structure, or a combination of a magnetic component and a shielding structure. The second magnetically controllable component 52 forms a magnetic field when powered on, and the intensity of the current magnetic field can be changed by adjusting the current flowing into the second magnetically controllable component 52, and the second permanent magnet 51 placed in the magnetic field can move, and drive the lens moving part 20 to move relative to the lens fixing part 10.

[0127] At the same time, according to the usage requirements of different scenarios, the shape of the second permanent magnet 51 and the setting positions of the second permanent magnet 51 and the second magnetically controllable component 52 can be adjusted.

[0128] For example, Figure 2 As shown, the second permanent magnet 51 is a block permanent magnet, and each block permanent magnet is arranged on the peripheral side of the lens moving part 20, and the second magnetically controllable component 52 is wound around the lens fixing part 10. The direction of the magnetic flux lines of each block permanent magnet is perpendicular to the second center axis 20a. In this way, when the second magnetically controllable component 52 is energized, the magnetic field formed generates a thrust along the second center axis 20a on each block permanent magnet, and the magnetic attraction direction of each block permanent magnet can be changed by changing the direction of the current passed into the second magnetically controllable component 52, thereby finally driving the lens moving part 20 to move back and forth in the lens fixing part 10.

[0129] Or, if Figure 8 As shown, the second permanent magnet 51 is a block permanent magnet, each block permanent magnet is arranged on the inner wall of the lens fixing part 10, and the second magnetic controllable component 52 is wound on the outer wall of the lens moving part 10.

[0130] For example, Figure 7As shown, the second permanent magnet 51 is an annular permanent magnet, which is sleeved on the lens fixing part 10, and the second magnetically controllable component 52 is first wound into a sheet shape, and then each second magnetically controllable component 52 is arranged on the circumferential side of the lens moving part 20. Similarly, when the same-direction current is passed through each second magnetically controllable component 52, the formed magnetic field interacts with the annular permanent magnet to make the second magnetically controllable component 52 move along the second center axis 20a, and by changing the direction of the current passed into the second magnetically controllable component 52, the reciprocating movement of the lens moving part 20 in the lens fixing part 10 is finally realized.

[0131] In this way, the second magnetic controllable component 52 generates a magnetic field when powered on, and forms a mutual magnetic attraction force with the magnetic field of the second permanent magnet 51 , so that the lens moving part 20 moves toward the lens fixing part 10 .

[0132] Please refer to Figure 2 and Figure 8 In some embodiments, the second permanent magnet 51 is a block permanent magnet, and each block permanent magnet is arranged at equal intervals on the periphery of the lens moving part 20 with the second central axis 20a of the lens moving part 20 as the center, and the second magnetic controllable component 52 is wound around the moving fixed part.

[0133] It can be understood that according to the formula, N=nBIL, where N is the Ampere force, n is the number of turns of the second magnetically controllable component 52, B is the magnetic field strength, I is the loading current, and L is the effective length of the second magnetically controllable component 52. Therefore, the magnitude of the driving force is proportional to the product of the magnetic field strength and the current.

[0134] For example, Figure 2 and Figure 3 As shown, the number of block permanent magnets is four, and each block permanent magnet is arranged at equal intervals on the circumference of the lens moving part 20 with the second center axis 20a of the lens moving part 20 as the center, and the direction of the magnetic flux lines of each block permanent magnet is perpendicular to the second center axis 20a. Then, when the second magnetically controllable component 52 is energized, the formed magnetic field generates a thrust along the second center axis 20a on each block permanent magnet, and the magnetic attraction direction of each block permanent magnet can be changed by changing the direction of the current passed into the second magnetically controllable component 52, thereby finally driving the lens moving part 20 to move back and forth in the lens fixing part 10.

[0135] In other embodiments, Figure 3As shown, the adsorption mechanism 30 includes a first magnetic controllable component arranged on the lens fixing part 10, and a first permanent magnet arranged on the lens moving part 20. At this time, the first permanent magnet of the adsorption mechanism 30 and the second permanent magnet 51 of the driving part 50 can be the same permanent magnet, that is, they share the same permanent magnet. Specifically, the second permanent magnet 51 is a block permanent magnet, and is arranged on the peripheral side of the lens moving part 20 with equal intervals with other block permanent magnets centered on the second central axis 20a of the lens moving part 20. The block permanent magnet is directly opposite to the second magnetic controllable component 52 of the adsorption mechanism 30. In this way, in terms of spatial layout, the overall volume of the endoscope lens assembly 100 is smaller, which is more suitable for the development of miniaturization.

[0136] Alternatively, the second permanent magnet 51 is a tubular permanent magnet, which is sleeved on the lens fixing part 10, and a plurality of second magnetic controllable components 52 are arranged at equal intervals around the lens moving part 20 with the second central axis 20a of the lens moving part 20 as the center.

[0137] Similarly, the positions of the second permanent magnet 51 and the second magnetically controllable component 52 are rearranged according to actual usage requirements. Similarly, when the second magnetically controllable component 52 is energized, the formed magnetic field interacts with the annular permanent magnet to move the second magnetically controllable component 52 along the direction of the second center axis 20a, and by changing the direction of the current passed into the second magnetically controllable component 52, the lens moving part 20 is finally able to reciprocate in the lens fixing part 10.

[0138] In this way, according to the shape of the second permanent magnet 51, the second permanent magnet 51 is selectively set on the lens fixing part 10 or the lens moving part 20. At the same time, the second magnetically controllable component 52 is wound on the lens moving part 20 or the lens fixing part 10. The second magnetically controllable component 52 forms a magnetic field when powered on. The magnetic flux lines of the magnetic field formed by the second magnetically controllable component 52 interact with the magnetic flux lines of the magnetic field of the second permanent magnet 51, so that the lens moving part 20 moves axially relative to the lens fixing part 10.

[0139] Please refer to Figure 1 , Figure 2 and Fig.10 In some embodiments, the endoscope lens assembly 100 further includes a first fixing assembly 61 and a second fixing assembly 62 both of which are cylindrical structures, and the first fixing assembly 61 and the second fixing assembly 62 are respectively sleeved on the opposite ends of the lens fixing portion 10, and the endoscope lens assembly 100 further includes a first elastic member 71 and a second elastic member 72, the lens moving portion 20 has a first end 20b and a second end 20c that are relatively arranged, the first elastic member 71 is arranged between the end of the first fixing assembly 61 and the first end 20b, and the second elastic member 72 is arranged between the end of the second fixing assembly 62 and the second end 20c.

[0140] It can be understood that the first fixing component 61 and the second fixing component 62 are both components for fixing and supporting the lens fixing part 10. At the same time, corresponding optical lenses are also arranged in the first fixing component 61 and the second fixing component 62, which are combined with the optical lenses in the lens moving part 20 to achieve the zoom requirement during the image acquisition process.

[0141] The first elastic member 71 and the second elastic member 72 are used to reset the lens moving part 20, that is, when the lens moving part 20 is in the initial position relative to the lens fixing part 10, the two elastic members are in a compressed state, and the force applied by the two elastic members to the lens moving part 20 makes the lens moving part 20 in a two-force balance state. When the driving part 50 provides a corresponding driving force to the lens moving part 20, the two-force balance state of the lens moving part 20 is broken and moves relative to the lens fixing part 10 until the lens moving part 20 is in a new three-force balance state, and the lens moving part 20 is located at a corresponding position in the lens fixing part 10. During this relative movement process, the endoscope lens assembly 100 achieves zooming. When the driving force of the driving part 50 disappears, the lens moving part 20 resumes the two-force balance state, and returns to the initial position under the action of the two elastic members.

[0142] The lens moving part 20 should be a columnar structure or a cylindrical structure, and the first end 20b and the second end 20c are two ends in the axial direction. Thus, the first elastic member 71 and the second elastic member 72 apply a force to the lens moving part 20 in the axial direction.

[0143] In summary, the first fixing assembly 61 and the second fixing assembly 62 are used to limit and fix the lens fixing part 10, so that the lens moving part 20 reciprocates between the end of the first fixing assembly 61 and the end of the second fixing assembly 62. At the same time, the first elastic member 71 and the second elastic member 72 push the lens moving part 20 to the corresponding position to maintain force balance, and also play a corresponding resetting role.

[0144] Optionally, the first fixing component 61 and the lens fixing portion 10 may be sleeve-connected by adopting a step structure, and similarly, the second fixing component 62 and the lens fixing portion 10 may be sleeve-connected by adopting a step structure.

[0145] Please refer to Figure 1 In other embodiments, the endoscope lens assembly 100 further includes a base 80 , which is sleeved on an end of the second fixing assembly 62 away from the lens fixing portion 10 .

[0146] Here, the base 80 may provide a corresponding mounting position to facilitate the installation of the endoscope lens assembly 100 and other peripheral structures.

[0147] Similarly, corresponding optical lenses are also provided on the base 80 to maintain the transmittance of the light beam in the endoscope lens assembly 100 .

[0148] Please refer to Fig.10 In some embodiments, a first groove 611 is formed at the end of the first fixing component 61, and one end of the lens fixing portion 10 is enclosed with the groove wall of the first groove 611 to form a first accommodating cavity. The first elastic member 71 is step-shaped, and the first elastic member 71 includes a first elastic segment 711 and a second elastic segment 712. The first elastic segment 711 is placed in the first accommodating cavity, and the second elastic segment 712 abuts against the first end 20b.

[0149] It can be understood that the outer diameter of the first elastic section 711 of the stepped first elastic member 71 is greater than the outer diameter of the second elastic section 712 , presenting a structural feature of having one end larger than the other end as a whole.

[0150] When the first elastic member 71 is installed, its first elastic section 711 is first placed in the first groove 611 and connected to the end of the first fixing component 61 by bonding. Then, when the first fixing component is connected to the end of the lens fixing part 10, the first elastic section 711 can be confined in the first accommodating cavity.

[0151] A second groove 621 is formed at the end of the second fixing component 62, and the other end of the lens fixing portion 10 is enclosed with the groove wall of the second groove 621 to form a second accommodating cavity. The second elastic member 72 is step-shaped, and the second elastic member 72 includes a third elastic segment 721 and a fourth elastic segment 722. The third elastic segment 721 is placed in the second accommodating cavity, and the fourth elastic segment 722 abuts against the second end 20c.

[0152] Similarly, the outer diameter of the third elastic section 721 of the stepped second elastic member 72 is greater than the outer diameter of the fourth elastic section 722 , presenting a structural feature of having one end larger than the other end as a whole.

[0153] When the second elastic member 72 is installed, its third elastic section 721 is first placed in the second groove 621 and connected to the end of the second fixing component 62 by bonding. Then, when the second fixing component assembly is connected to the end of the lens fixing portion 10, the third elastic section 721 can be confined in the second accommodating cavity.

[0154] In this way, the first elastic section 711 of the first elastic member 71 is more stably connected to the first fixing assembly 61, and the third elastic section 721 of the second elastic member 72 is more stably connected to the second fixing assembly 61. Specifically, the first elastic section 711 is confined in the first accommodating cavity, and the third elastic section 721 is confined in the second accommodating cavity.

[0155] Of course, in other embodiments, a first groove 611 is provided at the end of the first fixing component 61, one end of the lens fixing portion 10 is enclosed with the groove wall of the first groove 611 to form a first accommodating cavity, the first elastic member 71 is step-shaped, the first elastic member 71 includes a first elastic segment 711 and a second elastic segment 712, the first elastic segment 711 is placed in the first accommodating cavity, and the second elastic segment 712 abuts against the first end 20b; and, a second groove 621 is provided at the end of the second fixing component 62, the other end of the lens fixing portion 10 is enclosed with the groove wall of the second groove 621 to form a second accommodating cavity, the second elastic member 72 is step-shaped, the second elastic member 72 includes a third elastic segment 721 and a fourth elastic segment 722, the third elastic segment 721 is placed in the second accommodating cavity, and the fourth elastic segment 722 abuts against the second end 20c.

[0156] Please refer to Figure 3 , Fig.10 , Fig.11 and Fig.12 In some embodiments, the lens moving portion 20 includes a main body portion 21 with a columnar structure, a first protrusion structure 22 provided on one end of the main body portion 21, and a second protrusion structure 23 provided on the other end of the main body portion 21. The first protrusion structure 22 is used to abut against the end of the first fixing component 61, and the second protrusion structure 23 is used to abut against the end of the second fixing component 62. The main body portion 21 rolls or slides relative to the lens fixing portion 10.

[0157] It can be understood that the main body 21 is the main part of the lens moving part 20, and the main body 21 is used to carry the moving carrier of the optical lens, the permanent magnet, the coil and the like.

[0158] The first protruding structure 22 is a structure that extends outward from one end of the main body 21. The first protruding structure 22 is used to limit the travel of the main body 21 during movement. For example, when the first protruding structure 22 abuts against the end of the first fixing component 61, the main body 21 cannot continue to move. Here, the shape and structure of the first protruding structure 22 are not limited, and can be a protruding column, a protruding rib, a protruding ring, etc.

[0159] Similarly, the second protruding structure 23 is a structure that extends outward from the other end of the main body 21. The second protruding structure 23 is also used to limit the travel of the main body 21 during movement. For example, when the second protruding structure 23 abuts against the end of the second fixing component 62, the main body 21 cannot continue to move. Here, the shape and structure of the second protruding structure 23 are not limited, and can be a protruding column, a protruding rib, a protruding ring, etc.

[0160] For example, Figure 5As shown, when the first protruding structure 22 abuts against the end of the first fixing component 61, the lens moving part 20 is at the far end limit position relative to the lens fixing part 10. At this time, the lens moving part 20 is at a wide angle position; Figure 6 As shown, when the second protruding structure 23 abuts against the end of the second fixing component 62, the lens moving part 20 is in a proximal limit position relative to the lens fixing part 10. At this time, the lens moving part 20 is in a telescopic position.

[0161] At the same time, the movement mode between the main body 21 and the lens fixing part 10 can be sliding, that is, sliding friction occurs between the two, that is, the outer wall of the main body 21 and the inner wall of the lens fixing part 10 are in direct contact and friction occurs; or, the movement mode between the two can also be rolling, that is, the friction mode is rolling friction, that is, there is a structure such as a ball or the like to assist rolling between the outer wall of the main body 21 and the inner wall of the lens fixing part 10.

[0162] In this way, the main body 21 can be used to install optical elements such as lenses; when the first protrusion structure 22 abuts against the first fixing component 61, the main body 21 is located at the corresponding preset position in the lens fixing part 10; and when the second protrusion structure 23 abuts against the second fixing component 62, the main body 21 is located at the corresponding preset position in the lens fixing part 10, thereby meeting different zoom requirements.

[0163] Please refer to Fig.13 and Fig.14 In some embodiments, the lens moving portion 20 further includes a ball bearing 24 . A receiving groove 25 is defined on the main body 21 . The ball bearing 24 is placed in the receiving groove 25 and abuts against the inner wall of the lens fixing portion 10 .

[0164] It can be understood that the ball bearings 24 are used to provide corresponding support to reduce the friction of the lens moving part 20 moving relative to the lens fixing part 10, thereby improving the stability and clarity of the image of the endoscope lens assembly 100 during the image acquisition process.

[0165] For example, Fig.14 As shown, there are two balls 24, which are symmetrically arranged on the main body 21 with the second central axis 20a of the lens moving part 20 as the symmetry axis, and are in an isosceles triangle position relationship with the positioning structure 40 formed on the lens moving part 20. In this way, under the joint action of the adsorption mechanism 30 to increase the adsorption force and the positioning structure 40 to provide the corresponding positioning requirements, the lens moving part 20 can be coaxially moved relative to the lens fixing part 10, and during the movement, the two can remain or basically remain coaxial.

[0166] In this way, the main body 21 reduces the friction between itself and the inner wall of the lens fixing part 10 through the ball bearings 24 , so as to improve the smoothness of the movement of the main body 21 in the lens fixing part 10 .

[0167] Please refer to Fig.13 In another embodiment, the lens moving portion 20 further includes a blocking portion 26 , and the blocking portion 26 is used to block the opening of the accommodating groove 25 .

[0168] It can be understood that the blocking portion 26 can be a blocking block, a blocking plate, a blocking bracket, etc. The blocking portion 26 is used to prevent the ball 24 from falling from the opening of the receiving groove 25 .

[0169] In a second aspect, an embodiment of the present application further provides an endoscope, comprising the above-mentioned endoscope lens assembly 100.

[0170] Please refer to Fig.15 , Fig.15 This is a schematic diagram of the structure of an endoscope provided in an embodiment of the present application, wherein the endoscope further includes a connecting portion 200, an operating portion 300 and an insertion portion 400.

[0171] It can be understood that the connecting part 200 is connected to the light outlet hole of the endoscope system to transmit the light source to the insertion part 400. The operating part 300 is for medical personnel to hold and operate to adjust the degree of bending of the insertion part 400. The insertion part 400 is a component that extends into the patient's body. The insertion part 400 includes a flexible bending section 401 that can be adjusted by the operating part, and a head end 402 connected to the bending section 401. The head end 402 is hard and cannot be bent. The endoscope lens assembly 100 is also arranged in the head end 402.

[0172] In a third aspect, an embodiment of the present application also provides an endoscope system, including a display, a light source host, a zoom control device and the above-mentioned endoscope.

[0173] It can be understood that the beneficial effects of the second and third aspects of the present application can refer to the beneficial effects stated in the first aspect, and will not be repeated here.

[0174] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An endoscope lens assembly (100), characterized in that: include: A lens fixing part (10), the lens fixing part (10) being in a cylindrical structure, and the lens fixing part (10) having a first central axis (10a); A lens moving part (20), the lens moving part (20) being arranged in the lens fixing part (10) and being movable relative to the lens fixing part (10), the lens moving part (20) having a second central axis (20a); An adsorption mechanism (30), the adsorption mechanism (30) comprising a first magnetic component (31) and a matching component (32), the first magnetic component (31) being arranged on one of the lens fixing part (10) and the lens moving part (20), and the matching component (32) being arranged on the other of the lens fixing part (10) and the lens moving part (20); The first magnetic component (31) and the matching component (32) can be magnetically matched with each other, so that the lens moving part (20) moves toward the inner wall direction of the lens fixing part (10), thereby realizing the alignment of the second central axis (20a) and the first central axis (10a).

2. The endoscope lens assembly according to claim 1, characterized in that: The first magnetic component (31) and the matching component (32) both include a first permanent magnet; or, The first magnetic component (31) comprises a first permanent magnet, and the matching component (32) comprises a metal piece that can be magnetically attracted by the first permanent magnet.

3. The endoscope lens assembly according to claim 1, characterized in that: The first magnetic component (31) and the matching component (32) are capable of selectively magnetically attracting each other; The first magnetic component (31) and the matching component (32) both include a first magnetically controllable component; or, The first magnetic component (31) comprises a first magnetically controllable component, and the matching component (32) comprises a first permanent magnet or a metal part that can be attracted by magnetism; or, The first magnetic component (31) comprises a first permanent magnet, and the matching component (32) comprises a first magnetically controllable component.

4. The endoscope lens assembly according to any one of claims 1 to 3, characterized in that: The endoscope lens assembly also includes a positioning structure (40), which includes a first part (41) and a second part (42) that are adapted to each other, one of the lens fixing part (10) and the lens moving part (20) is provided with the first part (41), and the other of the lens fixing part (10) and the lens moving part (20) is provided with the second part (42), so that the second center axis (20a) is aligned with the first center axis (10a).

5. The endoscope lens assembly according to claim 4, characterized in that: The first portion (41) is provided with a first wedge-shaped surface (411), and the second portion (42) is provided with a second wedge-shaped surface (421) matched with the first wedge-shaped surface (411).

6. The endoscope lens assembly according to claim 1, characterized in that: The endoscope lens assembly (100) further comprises a driving unit (50), wherein the driving unit (50) is used to drive the lens moving unit (20) to move axially relative to the lens fixing unit (10); The driving part (50) comprises a second permanent magnet (51) and a second magnetically controllable component (52), wherein the second permanent magnet (51) is arranged on one of the lens fixing part (10) and the lens moving part (20), and the second magnetically controllable component (52) is arranged on the other of the lens fixing part (10) and the lens moving part (20).

7. The endoscope lens assembly according to claim 6, characterized in that: The second permanent magnet (51) is a block permanent magnet, each of the block permanent magnets is arranged at equal intervals around the lens moving part (20) with the second central axis (20a) of the lens moving part (20) as the center, and the second magnetic controllable component (52) is wound around the moving fixed part; or, The second permanent magnet (51) is a tubular permanent magnet, which is sleeved on the lens fixing part (10), and a plurality of the second magnetic controllable components (52) are arranged at equal intervals around the lens moving part (20) with the second central axis (20a) of the lens moving part (20) as the center.

8. The endoscope lens assembly according to claim 7, characterized in that: The endoscope lens assembly (100) further comprises a first fixing assembly (61) and a second fixing assembly (62) both of which are cylindrical structures, the first fixing assembly (61) and the second fixing assembly (62) being respectively sleeved on opposite ends of the lens fixing portion (10), and the endoscope lens assembly (100) further comprises a first elastic member (71) and a second elastic member (72), the lens moving portion (20) having a first end (20b) and a second end (20c) arranged opposite to each other, the first elastic member (71) being arranged between an end of the first fixing assembly (61) and the first end (20b), and the second elastic member (72) being arranged between an end of the second fixing assembly (62) and the second end (20c).

9. The endoscope lens assembly according to claim 8, characterized in that: A first groove (611) is formed at the end of the first fixing component (61), one end of the lens fixing portion (10) and the groove wall of the first groove (611) are enclosed to form a first accommodating cavity, the first elastic member (71) is step-shaped, the first elastic member (71) comprises a first elastic section (711) and a second elastic section (712), the first elastic section (711) is placed in the first accommodating cavity, and the second elastic section (712) abuts against the first end (20b), and / or; A second groove (621) is provided at the end of the second fixing component (62); the other end of the lens fixing portion (10) and the groove wall of the second groove (621) are combined to form a second accommodating cavity; the second elastic member (72) is step-shaped; the second elastic member (72) comprises a third elastic section (721) and a fourth elastic section (722); the third elastic section (721) is disposed in the second accommodating cavity; and the fourth elastic section (722) abuts against the second end (20c).

10. The endoscope lens assembly according to claim 8, characterized in that: The lens moving part (20) comprises a main body (21) in a columnar structure, a first protruding structure (22) provided on one end of the main body (21), and a second protruding structure (23) provided on the other end of the main body (21), wherein the first protruding structure (22) is used to abut against the end of the first fixing component (61), and the second protruding structure (23) is used to abut against the end of the second fixing component (62); The main body (21) rolls or slides relative to the lens fixing part (10).

11. An endoscope, characterized in that: The invention comprises an endoscope lens assembly (100) as claimed in any one of claims 1 to 10.

12. An endoscope system, characterized in that: It comprises a display, a light source host, a zoom control device and the endoscope as claimed in claim 11.

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