Adjustable focus lens device and endoscope

Abstract

The utility model provides a kind of focus-adjustable lens device and endoscope.The focus-adjustable lens device includes cylinder, first lens group, second lens group and focus-adjustable lens group.Cylinder includes detachably connected first shell and second shell, and first shell and second shell form containing space by enclosing.The first lens group is connected to the first end of the first shell.The second lens group is connected to the second end of the second shell.The focus-adjustable lens group is arranged in the containing space and is located between the first lens group and the second lens group.In this way, the outer diameter size of the focus-adjustable lens device is guaranteed, effectively improving the miniaturization of the focus-adjustable lens device, and improving the comfort and experience of patient use.In addition, when the focus-adjustable lens group needs to be disassembled, the first shell and the second shell can be disassembled, so that the second shell can be in the exposed space, which greatly facilitates the disassembly of the focus-adjustable lens group and effectively improves the convenience of user disassembly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an adjustable focus lens device and an endoscope. Background Technology

[0002] Endoscopes with focusing capabilities are receiving increasing attention in clinical settings and the market. Adjustable-focus endoscopes can acquire clear images at different distances and angles, helping users to diagnose diseases more accurately and improve the accuracy of pathological analysis results.

[0003] Currently, the lens of an adjustable-focus endoscope consists of an adjustable-focus lens and a conventional lens. The adjustable-focus lens can usually be placed in front of or behind the imaging objective to reduce the manufacturing difficulty of the lens.

[0004] However, during the manufacturing and assembly of the endoscope lens, there may be manufacturing and assembly errors. These errors need to be corrected or eliminated using an adjustable focusing lens to ensure the accuracy of endoscopic imaging. However, because the imaging objective has a large light incidence angle, to ensure that all incident light can be effectively processed by the adjustable focusing lens, the lens needs to be of sufficient size to cover these rays. This is extremely detrimental to the miniaturization of the endoscope lens, thus affecting the patient's comfort and experience. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, an adjustable focus lens device is provided.

[0006] The adjustable-focus lens assembly includes a barrel, a first lens group, a second lens group, and an adjustable-focus lens group. The barrel includes a first housing and a second housing that are detachably connected, forming an accommodating space. The first lens group is connected to a first end of the first housing. The second lens group is connected to a second end of the second housing. The adjustable-focus lens group is disposed within the accommodating space and located between the first and second lens groups. The adjustable-focus lens group has a light-transmitting aperture for limiting the aperture of the imaging beam in the central field of view.

[0007] This utility model discloses an adjustable focusing lens device. The adjustable focusing lens group can be disposed within the accommodating space formed by the first and second housings, and positioned between the first and second lens groups. Light entering through the first lens group can be concentrated into the light-transmitting aperture of the adjustable focusing lens group, and after adjustment by the adjustable focusing lens group, it can exit through the second lens group. Thus, the focus of the adjustable focusing lens device can be adjusted using the light-transmitting aperture of the adjustable focusing lens group without requiring a large size. This ensures the outer diameter of the adjustable focusing lens device, effectively improving its miniaturization and enhancing patient comfort and experience. Furthermore, when the adjustable focusing lens group needs to be disassembled, the first and second housings can be detached, exposing the second housing in the exposed space. This greatly facilitates the disassembly and assembly of the adjustable focusing lens group, effectively improving user convenience.

[0008] For example, a positioning post is provided at the second end of the first housing and one of the first ends of the second housing, and a positioning groove adapted to the positioning post is provided at the other housing, with the positioning post inserted into the positioning groove.

[0009] For example, the end of the positioning post is formed with a guide surface, which is used to guide the positioning post to slide into the positioning groove.

[0010] For example, the adjustable focus lens device further includes a first adhesive body, on which a first adhesive groove is provided. The first adhesive body is used to fill the first adhesive groove after the positioning post is inserted into the positioning groove, so as to connect the first housing and the second housing.

[0011] For example, the adjustable focus lens group includes an aperture and an adjustable focus lens. The aperture is disposed on the second end of the first housing, and the adjustable focus lens is disposed on the first end of the second housing. A light-transmitting hole is disposed on the aperture. The adjustable focus lens has an effective working area. In the axial direction of the cylinder, the projection of the effective working area toward the aperture covers the light-transmitting hole.

[0012] For example, the adjustable focus lens group includes an adjustable focus lens disposed on the second housing, and a light-transmitting hole is disposed on the adjustable focus lens.

[0013] For example, the first end of the second housing is recessed to form a cavity with an opening on one side, and the second end of the first housing covers the cavity to form an accommodating space. The adjustable lens is embedded in the cavity, and a preset distance is formed between the adjustable lens and the aperture.

[0014] For example, the adjustable focus lens device further includes a second adhesive body, a second adhesive groove is provided at the second end of the first housing, the aperture plate covers at least part of the opening of the second adhesive groove, and the second adhesive body fills the second adhesive groove to adhesively connect the aperture plate to the second end of the first housing.

[0015] For example, the adjustable focus lens device also includes a drive member electrically connected to the adjustable focus lens, the drive member being used to drive the adjustable focus lens to adjust the position of the focus of the adjustable focus lens.

[0016] For example, the adjustable focus lens device further includes at least one conductive medium, the two ends of which are electrically connected to the drive member and the adjustable focus lens, respectively.

[0017] For example, a groove is formed on the outer wall of the second housing, and the conductive medium is at least partially located in the groove.

[0018] For example, the end of the second housing is provided with a clearance groove, through which the adjustable lens is electrically connected to the conductive medium.

[0019] For example, the adjustable focus lens device further includes a third adhesive that fills and seals the clearance groove after the adjustable focus lens is electrically connected to the conductive medium.

[0020] For example, when the adjustable focus lens is located within the accommodating space, the cylindrical body covers the adjustable focus lens to form an encapsulation structure for the adjustable focus lens.

[0021] For example, the adjustable focus lens device further includes a fourth adhesive, through which the first lens group is connected to the first housing, and the second lens group is connected to the second housing.

[0022] According to another aspect of the present invention, an endoscope is also provided, including an insertion part and an adjustable focusing lens device as described above, the adjustable focusing lens device being connected to the insertion part.

[0023] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0024] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0025] Figure 1 A cross-sectional view of an adjustable focus lens device according to an exemplary embodiment of the present invention is shown. Figure 1 ;

[0026] Figure 2 A perspective view of a first housing according to an exemplary embodiment of the present invention is shown;

[0027] Figure 3 A perspective view of a second housing according to an exemplary embodiment of the present invention is shown;

[0028] Figure 4 A perspective view of an adjustable focus lens according to an exemplary embodiment of the present invention is shown;

[0029] Figure 5 A three-dimensional representation of an adjustable focus lens device according to an exemplary embodiment of the present invention is shown. Figure 1 ;

[0030] Figure 6 A three-dimensional representation of an adjustable focus lens device according to an exemplary embodiment of the present invention is shown. Figure 2 ;

[0031] Figure 7 A cross-sectional view of an adjustable focus lens device according to an exemplary embodiment of the present invention is shown. Figure 2 .

[0032] The components indicated by the reference numerals in the figures are as follows:

[0033] 1. Cylinder body; 11. First housing; 111. Positioning post; 1111. Guide surface; 1112. First adhesive groove; 112. Second adhesive groove; 12. Second housing; 121. Positioning groove; 122. Clearance groove; 123. Groove; 2. First lens group; 3. Second lens group; 4. Adjustable focus lens group; 41. Light passage hole; 42. Aperture; 43. Adjustable focus lens; 431. Effective working area; 432. Connection point; 5. Driving component; 51. Pin; 6. Conductive medium; 7. Sensor; 8. Metal wire. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0035] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0036] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0037] One embodiment of this utility model provides an adjustable focusing lens device that can adjust the focus of the adjustable focusing lens while maintaining the outer diameter size of the adjustable focusing lens. The adjustable focusing lens device according to an embodiment of this utility model will be described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 As shown, the adjustable focusing lens device includes a barrel 1, a first lens group 2, a second lens group 3, and an adjustable focusing lens group 4. The barrel 1 includes a first housing 11 and a second housing 12 that are detachably connected, forming an accommodating space. The first lens group 2 is connected to the first end of the first housing 11. The second lens group 3 is connected to the second end of the second housing 12. The adjustable focusing lens group 4 is disposed within the accommodating space and located between the first lens group 2 and the second lens group 3. The adjustable focusing lens group 4 is provided with a light-transmitting aperture 41 for limiting the aperture of the imaging beam in the central field of view.

[0039] Specifically, different voltages can be applied to the adjustable lens group 4, causing the polymer within the adjustable lens group 4 to deform accordingly, thereby achieving focusing. When light passes through the first lens group 2, it can be focused at the light-transmitting aperture 41 on the adjustable lens group 4. Thus, by applying voltage to the adjustable lens group 4, the focus of the adjustable lens device can be flexibly adjusted.

[0040] Specifically, the cylindrical body 1 can be cylindrical in shape. When the adjustable focus lens device is used in an endoscope, the cylindrical body 1 makes it easier to move through the patient's body. The adjustable focus lens group 4 can be set within the receiving space. This not only allows the focus of the adjustable focus lens device to be adjusted using the adjustable focus lens group 4, but also protects the adjustable focus lens group 4 in case of impact or drop of the adjustable focus lens device.

[0041] Furthermore, such as Figure 1, Figure 5 , Figure 6 and Figure 7 As shown, the focusing lens device may further include a sensor 7, which may be disposed on the second housing 12 and located at the second end of the second lens group 3. The sensor 7 can convert the light signal received by the second lens group 3 into an electrical signal, so that the focusing lens device can record and process the acquired image data. Specifically, the sensor 7 may be a complementary metal-oxide-semiconductor (CMOS) sensor.

[0042] Specifically, light can pass sequentially through the first lens group 2, the adjustable focusing lens group 4, and the second lens group 3, such as... Figure 1 As shown, Figure 1 The direction of the middle arrow can represent the direction of light propagation. The first lens group 2 can be used to collect the observed optical information and refract light rays entering from different angles to converge at the light-passing aperture 41 of the adjustable lens group 4. After the light passes through the light-passing aperture 41, it can illuminate the second lens group 3. The second lens group 3 can match the collected optical information with the target surface size of the sensor 7 so that the sensor 7 can convert the light signal into an electrical signal.

[0043] The adjustable focus lens device of this utility model allows the adjustable focus lens group 4 to be disposed within the accommodating space formed by the first housing 11 and the second housing 12, and positioned between the first lens group 2 and the second lens group 3. Light entering from the first lens group 2 can be concentrated at the light-transmitting aperture 41 of the adjustable focus lens group 4, and after adjustment using the adjustable focus lens group 4, it can exit from the second lens group 3. Thus, the focus of the adjustable focus lens device can be adjusted using the light-transmitting aperture 41 of the adjustable focus lens group 4 without requiring a large size, thereby ensuring the outer diameter of the adjustable focus lens device, effectively improving the miniaturization of the adjustable focus lens device, and enhancing the comfort and experience for patients. Furthermore, when it is necessary to disassemble or assemble the adjustable focus lens group 4, the first housing 11 and the second housing 12 can be detached, allowing the second housing 12 to be exposed, greatly facilitating the disassembly and assembly of the adjustable focus lens group 4 and effectively improving the ease of use for the user.

[0044] In some embodiments, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a positioning post 111 is provided at the second end of the first housing 11 and the first end of the second housing 12, and a positioning groove 121 adapted to the positioning post 111 is provided at the other end. The positioning post 111 is inserted into the positioning groove 121.

[0045] Specifically, such as Figure 2 and Figure 3As shown, the second end of the first housing 11 may be provided with a positioning post 111, and the first end of the second housing 12 may be provided with a positioning groove 121. By inserting the positioning post 111 into the positioning groove 121, the first housing 11 and the second housing 12 can be connected.

[0046] Furthermore, the positioning post 111 and the first housing 11 can be detachably connected or integrally formed. Detachable connection can include plug-in connection or adhesive connection, etc., which are not specifically limited in this application. Preferably, the positioning post 111 and the first housing 11 are integrally formed, so as to ensure a firm connection between the positioning post 111 and the first housing 11, while also reducing the processing and manufacturing difficulty of the first housing 11.

[0047] The outer wall of the second housing 12 can be recessed inward to form a positioning groove 121, thereby reducing the processing and manufacturing difficulty of the second housing 12.

[0048] In the above embodiments, when the positioning post 111 is inserted into the positioning groove 121, not only can the first end of the second housing 12 abut against the second end of the first housing 11, thereby limiting the displacement of the adjustable lens group 4 in the axial direction, but it can also prevent the first housing 11 and the second housing 12 from rotating relative to each other, effectively ensuring the positioning of the first lens group 2, the adjustable lens group 4 and the second lens group 3 in the radial direction, and effectively ensuring the imaging effect of the adjustable lens device.

[0049] In some embodiments, such as Figure 2 and Figure 7 As shown, a guide surface 1111 is formed at the end of the positioning post 111, and the guide surface 1111 is used to guide the positioning post 111 to slide into the positioning groove 121.

[0050] In the above embodiment, when the positioning post 111 is inserted into the positioning groove 121, the guide surface 1111 of the positioning post 111 can slide along the inner sidewall of the positioning groove 121, thereby reducing the friction between the positioning post 111 and the positioning groove 121. This not only reduces the driving force required for the insertion connection between the first housing 11 and the second housing 12, but also effectively improves the stability during the insertion process.

[0051] In some embodiments, such as Figures 2 to 7 As shown, the adjustable focus lens device also includes a first adhesive body (not shown in the figure), and a first adhesive groove 1112 is provided on the positioning post 111. The first adhesive body is used to fill the first adhesive groove 1112 after the positioning post 111 is inserted into the positioning groove 121, so as to connect the first housing 11 and the second housing 12.

[0052] The first adhesive mentioned above can be a UV-curable adhesive or an epoxy adhesive, etc., and this application does not make any specific limitation in this regard.

[0053] Specifically, the first adhesive groove 1112 can be constructed as an elongated through groove. The elongated through groove can accommodate more first adhesive bodies to ensure the firmness of the connection between the first housing 11 and the second housing 12. In embodiments not shown, the shape of the first adhesive groove 1112 can be square or circular, etc., and this application does not specifically limit it.

[0054] This application does not specifically limit the setting direction of the first glue groove 1112, but preferably it is parallel to the length direction of the positioning post 111, which can simplify the processing and manufacturing difficulty of the positioning post 111.

[0055] In the above embodiment, when the positioning post 111 is inserted into the positioning groove 121, the first adhesive can be filled into the first glue groove 1112, thereby making the first housing 11 and the second housing 12 firmly connected. This effectively improves the sealing performance of the adjustable focus lens device, thereby ensuring the stability of each component in the adjustable focus lens device during use.

[0056] In some embodiments, such as Figure 2 and Figure 3 As shown, the adjustable focus lens group 4 includes an aperture 42 and an adjustable focus lens 43. The aperture 42 is disposed on the second end of the first housing 11, and the adjustable focus lens 43 is disposed on the first end of the second housing 12. The light-transmitting hole 41 is disposed on the aperture 42. The adjustable focus lens 43 has an effective working area 431. In the axial direction of the cylinder 1, the projection of the effective working area 431 toward the aperture 42 covers the light-transmitting hole 41.

[0057] Understandably, the size of the aperture 41 on the aperture 42 can affect the amount of light entering the adjustable focusing lens assembly, thereby affecting the brightness of the image from the adjustable focusing lens assembly. Specifically, a larger aperture allows more light to pass through, enabling the adjustable focusing lens assembly to obtain a brighter image even in low-light environments.

[0058] Specifically, the aperture stop 42 can be positioned between the first lens group 2 and the adjustable focus lens 43, and is in close contact with the adjustable focus lens 43. (See also...) Figure 2 and Figure 3 The size of the effective working area 431 on the adjustable focusing lens 43 can be larger than the size of the light-transmitting hole 41 on the aperture 42. In the axial direction of the cylinder 1, the light passing through the light-transmitting hole 41 can fall into the effective working area 431 of the adjustable focusing lens 43, thereby adjusting the focus of the adjustable focusing lens device using the adjustable focusing lens 43.

[0059] The aforementioned effective working area 431 can be located in the central region of the adjustable focus lens 43. Specifically, the effective working area 431 can be understood as the optimal area on the surface of the adjustable focus lens 43 that can participate in light refraction and ensure the imaging quality of the adjustable focus lens 43.

[0060] In the above embodiments, the aperture 42 can effectively improve the imaging effect of the adjustable focus lens device, while the adjustable focus lens 43 can adjust the focus of the adjustable focus lens device. Thus, through the combined action of the adjustable focus lens 43 and the aperture 42, the practicality of the adjustable focus lens device can be guaranteed while the imaging effect of the adjustable focus lens device can be effectively improved.

[0061] In some embodiments, such as Figure 3 As shown, the adjustable focus lens group 4 includes an adjustable focus lens 43 disposed on the second housing 12, and a light-transmitting hole 41 disposed on the adjustable focus lens 43.

[0062] Specifically, the light-transmitting aperture 41 can be located in the central region of the adjustable focus lens 43, allowing light rays passing through the first lens group 2 to pass through the light-transmitting aperture 41 of the adjustable focus lens 43. Alternatively, the size of the light-transmitting aperture 41 on the adjustable focus lens 43 can be set to the size of an aperture stop, so that the adjustable focus lens 43 can have the same function as the aperture stop 42.

[0063] In the above embodiments, the adjustable focus lens 43 can have the same function as the aperture 42. In this way, the adjustable focus lens 43 can not only adjust the focus of the adjustable focus lens device, but also limit the amount of light entering the adjustable focus lens device, effectively simplifying the connection structure of the adjustable focus lens device and reducing the manufacturing difficulty and cost of the adjustable focus lens device.

[0064] In some embodiments, the first end of the second housing 12 is recessed to form a cavity with an opening on one side (not shown in the figure), the second end of the first housing 11 covers the cavity to form an accommodating space, the adjustable lens 43 is embedded in the cavity, and a preset distance is formed between the adjustable lens 43 and the aperture 42.

[0065] Specifically, the preset spacing ranges from 0 to 0.1 millimeters (mm), for example, 0mm, 0.05mm, 0.1mm, etc.

[0066] In the above embodiment, the adjustable focus lens 43 can be embedded in the cavity at the first end of the second housing 12, thereby forming a preset distance between the adjustable focus lens 43 and the aperture 42. When the first housing 11 and the second housing 12 are connected by insertion, the preset distance can prevent the adjustable focus lens 43 and the aperture 42 from colliding and squeezing each other, thereby preventing damage to the adjustable focus lens 43 and the aperture 42, effectively improving the reliability and practicality of the adjustable focus lens device.

[0067] In some embodiments, such as Figure 2 As shown, the adjustable focus lens device also includes a second adhesive body (not shown in the figure). A second adhesive groove 112 is provided at the second end of the first housing 11. The aperture 42 covers at least part of the opening of the second adhesive groove 112. The second adhesive body fills the second adhesive groove 112 to bond the aperture 42 to the second end of the first housing 11.

[0068] The second adhesive mentioned above can be a UV-curable adhesive or an epoxy adhesive, etc., and this application does not make any specific limitation in this regard.

[0069] Specifically, the second end of the first housing 11 is recessed inward to form a second adhesive groove 112 with an opening on one side. This application does not specifically limit the shape of the second adhesive groove 112; any shape that can accommodate the second adhesive is acceptable. It should be noted that when filling the second adhesive groove 112 with the second adhesive, care should be taken to prevent the second adhesive from overflowing. Overflowing second adhesive may protrude from the second end of the first housing 11, causing it to collide and be squeezed against the adjustable lens 43, thereby damaging the adjustable lens 43.

[0070] Furthermore, there can be multiple second glue grooves 112, and these multiple second glue grooves 112 can be spaced apart along the circumferential direction of the aperture 42 to ensure a tight connection between the aperture 42 and the first housing 11.

[0071] In the above embodiment, a second adhesive can be filled into the second adhesive groove 112, and the aperture 42 can be bonded to the second end of the first housing 11 using the second adhesive. This effectively simplifies the connection method between the aperture 42 and the first housing 11, improves the firmness of the connection between the two, and allows the aperture 42 to be installed when the second end of the first housing 11 is in an exposed space, effectively ensuring the convenience and accuracy of the installation of the aperture 42.

[0072] In some embodiments, such as Figure 3 As shown, the adjustable focus lens device also includes a drive unit 5 electrically connected to the adjustable focus lens 43. The drive unit 5 is used to drive the adjustable focus lens 43 to adjust the position of the focal point of the adjustable focus lens 43.

[0073] Specifically, the adjustable focus lens 43 may be provided with a connection point 432 for electrical connection, and the driving component 5 may be provided with a pin 51. The connection point 432 and the pin 51 can be connected by a metal wire 8, thereby realizing the electrical connection between the adjustable focus lens 43 and the driving component 5. The metal wire 8 may be made of a material with good conductivity, such as gold.

[0074] In the above embodiments, the driving component 5 can apply different voltages to the adjustable focus lens 43 to adjust the focus of the adjustable focus lens 43, thereby meeting different usage requirements and usage scenarios of the adjustable focus lens device, and further improving the practicality and applicability of the adjustable focus lens device.

[0075] In some embodiments, such as Figure 3 As shown, the adjustable focus lens device also includes at least one conductive medium 6, the two ends of which are electrically connected to the drive member 5 and the adjustable focus lens 43, respectively.

[0076] The aforementioned conductive medium 6 can be made of materials with conductive properties such as copper, or a gold layer can be plated on the material with conductive properties to further improve the conductivity of the conductive medium 6.

[0077] Specifically, the conductive medium 6 can be attached to the outer wall of the second housing 12. The conductive medium 6 and the second housing 12 can be connected by a movable connection such as adhesive connection or snap-fit ​​connection. This application does not specify the fixing method of the conductive medium 6.

[0078] Specifically, see Figure 3 The conductive medium 6 can be two. The two connection points 432 of the adjustable lens 43 can be connected to one end of the two conductive media 6 via metal wires 8, and the other ends of the two conductive media 6 can be connected to the two pins 51 on the driving component 5, thereby forming an effective electrical circuit between the driving component 5 and the adjustable lens 43. It can be understood that the two conductive media 6 can be spaced apart on the outer wall of the second housing 12 to ensure that the two conductive media 6 can be isolated from each other to avoid short circuits.

[0079] In the above embodiments, since the mechanical strength of the metal wire 8 is limited, the adjustable focus lens 43 and the driving component 5 are electrically connected by the conductive medium 6, which can effectively shorten the length of the metal wire 8, thereby improving the stability of the connection and signal transmission between the adjustable focus lens 43 and the driving component 5, and further improving the reliability of the adjustable focus lens device.

[0080] In some embodiments, such as Figure 3 As shown, a groove 123 is formed on the outer side wall of the second housing 12, and the conductive medium 6 is at least partially located in the groove 123.

[0081] In the above embodiments, at least a portion of the conductive medium 6 can be embedded in the groove 123, thereby minimizing the radial dimension of the adjustable focus lens device. When the adjustable focus lens device is applied to an endoscope, it can ensure the miniaturization of the endoscope lens portion, effectively improving the patient's comfort and experience.

[0082] In some embodiments, such as Figure 3 As shown, the end of the second housing 12 is provided with a clearance groove 122, and the adjustable focus lens 43 is electrically connected to the conductive medium 6 through the clearance groove 122.

[0083] Specifically, the clearance groove 122 can be provided on the outer wall of the cylinder 1 and communicate with the slot and the accommodating space. The position of the clearance groove 122 can correspond to the position of the connection point 432 of the adjustable focus lens 43. When the metal wire 8 is used to connect to the connection point 432 of the adjustable focus lens 43, the clearance groove 122 can form an operating space to facilitate the connection operation.

[0084] In the above embodiments, by setting the clearance groove 122, the user can have a certain operating space when connecting the adjustable focus lens 43, which effectively improves the accuracy and flexibility in the connection process, as well as the convenience of user use.

[0085] In some embodiments, the adjustable focus lens device further includes a third adhesive (not shown) that fills and seals the clearance groove 122 after the adjustable focus lens 43 is electrically connected to the conductive medium 6.

[0086] The aforementioned third adhesive can be a UV-curable adhesive or an epoxy adhesive, etc., and this application does not make any specific limitation in this regard.

[0087] Specifically, after the adjustable focus lens 43 is electrically connected to the conductive medium 6 using the metal wire 8, in order to ensure the firmness of the connection between the two and to prevent the metal wire 8 from breaking when subjected to external force, a third adhesive can be filled into the relief groove 122. This not only allows the third adhesive to wrap around the metal wire 8, thus protecting the metal wire 8, but also seals the relief groove 122, thereby improving the sealing performance of the adjustable focus lens device.

[0088] In the above embodiment, the third adhesive can seal the clearance groove 122, which not only improves the connection strength between the adjustable focus lens 43 and the conductive medium 6, but also effectively improves the sealing performance of the adjustable focus lens device, thereby greatly improving the stability of each component in the adjustable focus lens device during use.

[0089] In some embodiments, when the adjustable focus lens 43 is located within the accommodating space, the cylindrical body 1 covers the adjustable focus lens 43 to form an encapsulation structure for the adjustable focus lens 43.

[0090] Specifically, the adjustable focusing lens 43 typically has an outer encapsulation structure, which effectively protects it from dust, moisture, and other environmental factors. However, the outer diameter of the adjustable focusing lens 43 with the outer encapsulation structure is relatively large. When the adjustable focusing lens device is used in an endoscope, it directly results in a large radial dimension of the endoscope, greatly affecting patient comfort. This application, however, allows the adjustable focusing lens 43 without an outer encapsulation structure to be placed within a receiving space, and the gap between the receiving space and the external space to be sealed with a colloid. Therefore, the cylindrical body 1 can be used as the encapsulation structure for the adjustable focusing lens 43.

[0091] In the above embodiments, the adjustable focus lens 43 can be placed in the accommodating space, and the cylindrical body 1 can be used as the encapsulation structure of the adjustable focus lens 43. In this way, while ensuring the radial dimensions of the adjustable focus lens device, the sealing and reliability of the adjustable focus lens device can also be ensured, which greatly improves the reliability and practicality of the adjustable focus lens device.

[0092] In some embodiments, the adjustable focus lens device further includes a fourth adhesive (not shown in the figure), the first lens group 2 is connected to the first housing 11 through the fourth adhesive, and the second lens group 3 is connected to the second housing 12 through the fourth adhesive.

[0093] The aforementioned fourth adhesive can be a UV-curable adhesive or an epoxy adhesive, etc., and this application does not make any specific limitation in this regard.

[0094] In the above embodiments, the first lens group 2 can be bonded to the first housing 11 through the fourth adhesive, and the second lens group 3 can be bonded to the second housing 12 through the fourth adhesive. While improving the sealing performance of the adjustable focus lens device, it can also prevent displacement between the first lens group 2 and the second lens group 3, effectively ensuring the coaxiality between the first lens group 2 and the second lens group 3, thereby improving the imaging effect of the adjustable focus lens device.

[0095] According to another aspect of the present invention, an endoscope is also provided, including an insertion part and an adjustable focusing lens device as described above, the adjustable focusing lens device being connected to the insertion part.

[0096] Specifically, the insertion part can be rod-shaped, and can be inserted into the body through the patient's natural orifice or open incision, such as through the mouth or esophagus into the stomach, or through the anus into the intestines. Driven by the insertion part, the adjustable-focus lens device can be positioned at the target location within the patient's body to acquire an image of that location, helping users to diagnose diseases more accurately and improve the accuracy of pathological analysis results.

[0097] The endoscope of this invention includes the adjustable focusing lens device as described above. Since the adjustable focusing lens device has the beneficial effects described above, the endoscope including the adjustable focusing lens device as described above must also have the beneficial effects described above.

[0098] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that these exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0099] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0100] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0101] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0102] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A focusing lens device, characterized in that, include: The cylindrical body includes a first shell and a second shell that are detachably connected, and the first shell and the second shell enclose a receiving space. A first lens group is connected to the first end of the first housing; The second lens group is connected to the second end of the second housing; as well as An adjustable focus lens group is disposed within the accommodating space and located between the first lens group and the second lens group; The adjustable focus lens group is provided with a light-passing hole for limiting the aperture of the imaging beam in the central field of view.

2. The adjustable focus lens device according to claim 1, characterized in that, One of the second end of the first housing and the first end of the second housing is provided with a positioning post, and the other is provided with a positioning groove adapted to the positioning post, and the positioning post is inserted into the positioning groove.

3. The adjustable focus lens device according to claim 2, characterized in that, The end of the positioning post has a guide surface, which is used to guide the positioning post to slide into the positioning groove.

4. The adjustable focus lens device according to claim 2 or 3, characterized in that, The adjustable focus lens device further includes a first adhesive body, and the positioning post is provided with a first adhesive groove. The first adhesive body is used to fill the first adhesive groove after the positioning post is inserted into the positioning groove, so as to connect the first housing and the second housing.

5. The adjustable focus lens device according to claim 2, characterized in that, The adjustable focus lens group includes an aperture and an adjustable focus lens. The aperture is disposed on the second end of the first housing, and the adjustable focus lens is disposed on the first end of the second housing. The light-transmitting hole is disposed on the aperture. The adjustable focus lens has an effective working area. In the axial direction of the cylinder, the projection of the effective working area toward the aperture covers the light-transmitting hole.

6. The adjustable focus lens device according to claim 2, characterized in that, The adjustable focus lens group includes an adjustable focus lens disposed on the second housing, and the light-transmitting hole is disposed on the adjustable focus lens.

7. The adjustable focus lens device according to claim 5, characterized in that, The first end of the second housing is recessed to form a cavity with an opening on one side, and the second end of the first housing covers the cavity to form the accommodating space. The adjustable lens is embedded in the cavity, and a preset distance is formed between the adjustable lens and the aperture.

8. The adjustable focus lens device according to claim 5, characterized in that, The adjustable focus lens device further includes a second adhesive body. A second adhesive groove is provided at the second end of the first housing. The aperture plate covers at least a portion of the opening of the second adhesive groove. The second adhesive body fills the second adhesive groove to bond the aperture plate to the second end of the first housing.

9. The adjustable focus lens device according to claim 5 or 6, characterized in that, The adjustable focus lens device further includes a driving component electrically connected to the adjustable focus lens, the driving component being used to drive the adjustable focus lens to adjust the position of the focal point of the adjustable focus lens.

10. The adjustable focus lens device according to claim 9, characterized in that, The adjustable focus lens device further includes at least one conductive medium, the two ends of which are electrically connected to the driving member and the adjustable focus lens, respectively.

11. The adjustable focus lens device according to claim 10, characterized in that, A groove is formed on the outer side wall of the second housing, and the conductive medium is at least partially located within the groove.

12. The adjustable focus lens device according to claim 10, characterized in that, The end of the second housing is provided with a clearance groove, through which the adjustable focus lens is electrically connected to the conductive medium.

13. The adjustable focus lens device according to claim 12, characterized in that, The adjustable focus lens device further includes a third adhesive, which fills and seals the clearance groove after the adjustable focus lens is electrically connected to the conductive medium.

14. The adjustable focus lens device according to claim 5 or 6, characterized in that, When the adjustable focus lens is located within the accommodating space, the cylindrical body covers the adjustable focus lens to form an encapsulation structure for the adjustable focus lens.

15. The adjustable focus lens device according to claim 1, characterized in that, The adjustable focus lens device further includes a fourth adhesive body, through which the first lens group is connected to the first housing, and the second lens group is connected to the second housing through the fourth adhesive body.

16. An endoscope, characterized in that, It includes an insertion part and an adjustable focus lens device as described in any one of claims 1-15, wherein the adjustable focus lens device is connected to the insertion part.

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