Fiberscope and camera connecting structure, connecting method and breast duct endoscope

Abstract

The invention provides a fiberscope and camera connecting structure and method and a breast duct endoscope, the connecting structure comprises a fiberscope part and a camera part, the camera part comprises an outer cylinder, an eyepiece adapter lens and a handle shell, the fiberscope comprises an image fiber, an image fiber seat base and a connecting piece, and the connecting piece is connected to the rear end of the image fiber seat base. The rear end of the image fiber penetrates through the central hole of the connecting piece, and the front end of the image fiber penetrates out of the front end of the image fiber seat base; the rear end of the connecting piece is matched with the front end of the outer cylinder through an inserting structure, the fiberscope part and the camera part are connected and fixed through the fixing device, and after the fiberscope part and the camera part are connected, the rear end of the image fiber is close to the eyepiece adapter lens. According to the connecting structure, an inserting structure is adopted for connection instead of traditional buckle connection, the overall size of a connecting part can be obviously reduced, and the using flexibility and convenience are improved; and meanwhile, the definition and contrast of the image can be improved, the use cost is reduced, and the operation steps are simplified.

Description

Technical Field

[0001] The present invention belongs to the technical field of ductoscopes, and in particular relates to a fiberscope and camera connection structure, a connection method, and a ductoscope. Background Art

[0002] Fiberoptic ductoscope is an important tool in the diagnosis and treatment of breast diseases. The usual fiberoptic ductoscope can be used multiple times, but the multiple-use ductoscope has high requirements for disinfection. If you are not careful, it will cause cross infection and bring serious consequences. Therefore, disposable ductoscopes have appeared on the market.

[0003] In the existing disposable breast ductoscope, such as the patent with publication number CN219594534U, the light source component and the camera component are connected by providing a light source connector and an image transmission bundle holder, respectively. This multi-point connection method will lead to difficulty in alignment and long installation time.

[0004] In other existing ductoscopes, the connection structure between the fiber ductoscope eyepiece and the image fiber is usually a standard buckle. This type of ductoscope has a large structure and needs to be fixed on a telescopic rod when in use, which makes the fiberscope part long and greatly affects the image transmission effect. Summary of the invention

[0005] Purpose of the invention: In order to solve the defects of the prior art, the present invention provides a fiberscope and camera connection structure, a connection method and a ductoscope, which solve the problem that the ductoscope structure is large in size, the fiberscope part is long in size, and the image transmission effect is affected due to the standard snap connection between the fiberscope eyepiece and the image fiber.

[0006] Technical solution: In order to achieve the above-mentioned invention object, the present invention adopts the following technical solution:

[0007] In a first aspect, the present application discloses a fiberscope and camera connection structure, comprising:

[0008] The camera unit includes an outer tube, an eyepiece adapter and a handle housing, wherein the rear end of the outer tube is located inside the handle housing, the front end is exposed from the front end of the handle housing, and the eyepiece adapter is connected to the front end of the outer tube;

[0009] The fiberscope part includes an image fiber, an image fiber base and a connecting piece, wherein the connecting piece is connected to the rear end of the image fiber base, the rear end of the image fiber passes through the central hole of the connecting piece, and the front end of the image fiber passes through the front end of the image fiber base;

[0010] The rear end of the connector and the front end of the outer tube are matched through a plug-in structure, and the fiberscope part and the camera part are connected and fixed through a fixing device. When the fiberscope part and the camera part are connected, the rear end of the image fiber is close to the eyepiece adapter.

[0011] As an implementation scheme, the plug-in structure includes a plug-in portion and a mating portion;

[0012] The plug-in portion is arranged on the rear end face of the fiber holder fixing cover or the front end face of the outer tube; the matching portion is arranged on the front end face of the outer tube or the rear end face of the fiber holder fixing cover;

[0013] When the fiberscope part and the camera part are connected, the plug-in part is inserted into the matching part, and the rear end surface of the image fiber holder fixing cover and the front end surface of the outer tube are in contact with each other;

[0014] Preferably, the plug-in portion is any one of a pin, a buckle, a mortise and a boss, and the mating portion is any one of a pin hole, a slot, a mortise and a bayonet.

[0015] As an embodiment, the fixing device includes a tightening hand wheel;

[0016] The tightening hand wheel is a hollow structure, the rear end of the inner ring of which is provided with a threaded portion, and the front end is provided with an annular protrusion protruding inwardly, the front end of the outer periphery of the image fiber seat base has an annular step structure, and the front end of the outer periphery of the outer tube is provided with a front end thread, the tightening hand wheel is sleeved on the image fiber seat base, the inner wall of the front end annular protrusion abuts against the annular step structure on the image fiber seat base, and the rear end threaded portion is connected with the front end thread of the outer periphery of the outer tube;

[0017] Preferably, the fixing device further comprises a locking nut, which is sleeved on and connected to the outer wall of the fiber holder base, and the rear end face of the locking nut abuts against the front end face of the tightening hand wheel.

[0018] As an implementation scheme, the connecting member includes an image fiber holder and an image fiber holder fixing cover;

[0019] The image fiber seat has a front end and a rear end, the front end of the image fiber seat is connected to the rear end of the image fiber seat base, and the rear end is exposed from the image fiber seat base;

[0020] The image fiber seat fixing cover covers the rear end of the image fiber seat, and the image fiber seat fixing cover is connected to the image fiber seat base.

[0021] As an implementation scheme, a recessed annular platform is provided at the rear end opening of the image fiber seat base, and the front end of the image fiber seat is connected to the annular platform;

[0022] The outer periphery of the rear end of the image fiber seat is provided with a convex ridge, the inner hole wall of the image fiber seat fixing cover is provided with a first groove, the rear end of the image fiber seat is inserted into the inner hole of the image fiber seat fixing cover, and the convex ridge is located in the first groove;

[0023] Preferably, the plug-in portion or the mating portion is arranged on the rear end surface of the fiber holder fixing cover;

[0024] When the fiberscope part and the camera part are connected, the rear end surface of the image fiber holder fixing cover is in contact with the front end surface of the outer cylinder.

[0025] As an implementation scheme, the fiberscope part further includes a main scope tube and an illumination optical fiber, wherein the main scope tube is connected to the front end of the image fiber holder base and is partially exposed;

[0026] The rear end of the imaging fiber is connected to the imaging fiber holder and exposed at the rear end of the imaging fiber holder; the rear end of the illumination optical fiber is connected to the imaging fiber holder fixing cover and is flush with the rear end surface of the imaging fiber holder fixing cover; the front end of the imaging fiber and the front end of the illumination optical fiber are both located at the front end of the main mirror tube;

[0027] Preferably, a self-focusing imaging objective lens is provided at the front end of the image fiber; the outer wall of the main mirror tube is also sequentially covered with a main mirror support tube inner tube and a main mirror support tube outer tube, and the front end of the main mirror support tube inner tube and the front end of the main mirror support tube outer tube are both flush with the front end of the image fiber seat base.

[0028] As an implementation scheme, the outer cylinder includes an outer cylinder body, a connecting portion and an inner cylinder body, the connecting portion is connected to the rear end surface of the inner cylinder body, and the outer circumference of the connecting portion is larger than the outer circumference of the inner cylinder body;

[0029] The connecting portion is located inside the handle shell and is fixedly connected to the front end of the handle shell; the inner cylinder is exposed from the front end of the handle shell;

[0030] The outer cylinder is sleeved on the front end of the outer periphery of the inner cylinder, and the inner diameter of the outer cylinder is matched with the outer diameter of the fiber holder fixing cover; the outer walls of the outer cylinder and the inner cylinder are provided with through slots;

[0031] When the fiberscope part and the camera part are connected, the outer ring of the image fiber holder fixing cover is connected to the inner ring of the outer cylinder, and the rear end surface of the image fiber holder fixing cover is fitted to the front end surface of the inner cylinder;

[0032] Preferably, a second through hole is provided in the inner cylinder, a second notch is provided on the outer wall of the connecting portion, and the second notch is connected to the second through hole;

[0033] The second through hole is coaxially arranged with the illumination optical fiber in the image fiber holder fixing cover.

[0034] As an implementation scheme, the image fiber seat base is a three-section cylindrical structure, including a front section, a middle section and a rear section with outer diameters increasing in sequence, the front section and the middle section are connected by a small hole, and an indented annular platform is provided at the end opening of the rear section, and the front end of the image fiber seat is closely attached to the annular platform on the image fiber seat base;

[0035] A first notch is arranged on the rear outer wall of the imaging fiber seat base, one end of the illumination optical fiber is connected to the imaging fiber seat fixing cover, and the other end passes through the first notch and is connected to the main mirror tube on the imaging fiber seat base.

[0036] As an implementation scheme, the camera unit further includes a focus dial, the eyepiece adapter is connected inside the outer tube along the axis direction of the outer tube, and the tube wall of the outer tube is provided with a groove;

[0037] The focus dial is sleeved on the outer wall of the outer tube, and the inner wall of the focus dial is provided with a second groove, and the outer wall of the eyepiece adapter is connected with an adjustment rod; the top end of the adjustment rod passes through the slot and is located in the second groove;

[0038] The direction of the slot is inclined to the axis direction of the outer tube, and when the focus dial is rotated, the eyepiece adapter can move along the axis of the outer tube to approach or move away from the rear end of the image fiber;

[0039] The camera unit also includes a focus wheel fixing cover, which is sleeved on the outer wall of the outer cylinder and fixedly connected thereto, and the focus wheel is located between the focus wheel fixing cover and the front end of the handle shell.

[0040] As an implementation scheme, a camera device is connected to the rear end of the outer tube, and the camera device is located in the handle housing;

[0041] Preferably, the camera device comprises a CMOS mounting seat, a filter, a lens shading pad and a CMOS imaging system which are arranged in sequence, wherein the CMOS imaging system is mounted on the side of the CMOS mounting seat, and the filter and the lens shading pad are located between the two; the CMOS mounting seat is provided with a raised cylindrical structure at the front end, and the connection between the outer cylinder and the camera device is achieved by inserting the cylindrical structure into the rear end of the outer cylinder and then fixing the connection through a connecting device.

[0042] In a second aspect, the present application discloses a method for connecting a fiberscope and a camera, comprising:

[0043] Install a self-focusing imaging objective lens at the front end of the image fiber, and connect the illumination fiber to the periphery of the front end of the image fiber; pass the rear end of the image fiber through the central hole of the image fiber holder, and make the rear end of the image fiber protrude from the central hole of the image fiber holder by .-.mm;

[0044] The self-focusing imaging objective lens is passed through the image fiber base and extended out of the front end of the image fiber base. The front end of the image fiber base is installed into the rear end of the image fiber base, and the rear end of the image fiber base is exposed. The image fiber base fixing cover covers the exposed part of the image fiber base and is connected to the image fiber base.

[0045] Connect the camera device to the rear end of the outer tube, connect the eyepiece adapter lens to the front end of the outer tube, connect the outer tube and the handle shell, and make the rear end of the outer tube be located inside the handle shell and the front end of the outer tube be exposed from the front end of the handle shell;

[0046] The rear end of the image fiber holder fixed cover and the front end of the outer tube are connected through a plug-in structure, and the fiberscope part and the camera part are connected and fixed through a fixing device; when the fiberscope part and the camera part are connected, the rear end of the image fiber is close to the eyepiece adapter.

[0047] In a third aspect, the present invention provides a breast ductoscope, which includes the fiberscope and camera connection structure of any one of the above embodiments.

[0048] The "front end" and "rear end" mentioned in the present invention are described based on the fiberscope imaging objective lens as the front end and the handle tail cover as the rear end. The front ends and rear ends of other components are described based on this orientation.

[0049] Beneficial effects:

[0050] 1. The image fiber holder fixing cover in the fiberscope part of the present application and the outer cylinder in the camera part are connected by a plug-in structure, so that there is no connection structure between the eyepiece adapter and the image fiber in the fiberscope part, that is, the traditional snap connection between the two is replaced, which can significantly reduce the overall size of the connection part; this type of ductoscope does not need to be fixed on the telescopic rod when in use, which greatly shortens the length of the fiberscope part, especially the size of the image fiber in the fiberscope part, on the one hand, reduces the risk of damaging the image fiber during operation and reduces the cost of use, and on the other hand, the shorter fiberscope part ensures a better image transmission effect;

[0051] 2. Due to the setting of the plug-in structure and the fixing device, the snap-on connection is omitted, so that the rear end of the image fiber in the fiberscope can be closer to the eyepiece adapter, thereby reducing the loss of the optical signal during the transmission process and improving the clarity and contrast of the image;

[0052] 3. The traditional ductoscope is to connect the fiberscope and the eyepiece adapter, and then fix the eyepiece on the extension rod of the trolley. The user installs the length shifter, the handle tee and the sheath tube on the other end of the fiberscope. There is a certain distance between the equipment trolley and the patient, and the image is transmitted by the fragile image fiber. For some users who are not familiar with the technique, it is very easy to damage the image fiber. The fiberscope and camera connection structure of the present invention innovatively integrates the camera imaging component into the handle, abandoning the traditional ductoscope to connect the fiberscope, the eyepiece adapter, the optical bayonet and the CMOS camera in sequence. The connection method between the eyepiece adapter, the optical bayonet and the CMOS camera is simplified and integrated inside the handle. When in use, the rear end of the image fiber seat fixed cover in the fiberscope part and the front end of the outer tube are connected through the plug-in structure. This quick connection method is not only easy to install and disassemble, but also can ensure good alignment accuracy, which is convenient for users to quickly replace different fiberscopes according to their needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1The figure is a diagram of the internal structure of the connection structure between the fiberscope and the camera of the present invention.

[0054] Figure 2 It is an exploded view of the connection structure between the fiberscope and the camera of the present invention.

[0055] Figure 3 The figure is a diagram showing the internal structure of the fiber holder base in the fiberscope and camera connection structure of the present invention.

[0056] Figure 4 It is a three-dimensional structural diagram of the image fiber holder base in the fiberscope and camera connection structure of the present invention.

[0057] Figure 5 It is a structural schematic diagram of the image fiber holder in the fiberscope and camera connection structure of the present invention.

[0058] Figure 6 It is a structural schematic diagram of the image fiber holder fixing cover in the fiberscope and camera connection structure of the present invention.

[0059] Figure 7 The figure is a connection state diagram of the image fiber holder base and the image fiber holder fixing cover in the connection structure of the fiberscope and the camera head of the present invention.

[0060] Figure 8 It is a structural schematic diagram of the outer cylinder in the connection structure of the fiberscope and the camera of the present invention (viewing angle 1).

[0061] Fig. 9 It is a structural schematic diagram of the outer cylinder in the fiberscope and camera connection structure of the present invention (viewing angle 2).

[0062] Fig.10 It is a structural schematic diagram of the outer cylinder in the fiberscope and camera connection structure of the present invention (viewing angle 3).

[0063] Fig.11 It is a structural schematic diagram of a focus dial in the fiberscope and camera connection structure of the present invention;

[0064] Among them, 1, image fiber; 101, self-focusing imaging objective lens; 2, main mirror tube; 201, inner tube of support tube; 202, outer tube of support tube; 3, image fiber seat base; 301, front section; 302, middle section; 303, rear section; 3031, first notch; 304, small hole; 305, annular platform; 4, lighting optical fiber; 5, image fiber seat; 501, convex ridge; 6, image fiber seat fixing cover; 601, boss; 602, first through hole; 603, first groove; 7, tightening hand wheel; 701, annular protrusion; 8, locking nut; 9, focusing dial; 901, second groove Groove; 10, outer cylinder; 1001, outer cylinder body; 1002, connecting part; 1003, inner cylinder body; 1004, slot; 1005, center hole; 1006, bayonet; 1007, second through hole; 1008, second notch; 11, eyepiece adapter; 12, camera device; 1201, CMOS fixing seat; 12011, cylindrical structure; 12012, third notch; 1202, filter; 1203, lens shading pad; 1204, CMOS imaging system; 13, handle shell; 14, focus wheel fixing cover; 15, handle tail cover. DETAILED DESCRIPTION

[0065] The present invention will be further described below in conjunction with the accompanying drawings.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0068] Example 1

[0069] A fiberscope and camera connection structure comprises a camera unit and a fiberscope unit, wherein the camera unit comprises an outer tube 10, an eyepiece adapter 11 and a handle shell 13, wherein the rear end of the outer tube 10 is located in the handle shell 13, and the front end is exposed at the front end of the handle shell 13, and the eyepiece adapter 11 is connected to the front end of the outer tube 10; the fiberscope unit comprises an image fiber 1, an image fiber seat base 3 and a connector, wherein the connector is connected to the rear end of the image fiber seat base 3, the rear end of the image fiber 1 passes through the center hole of the connector, and the front end passes through the front end of the image fiber seat base 3; the rear end of the connector and the front end of the outer tube 10 are matched through a plug-in structure, and the fiberscope unit and the camera unit are connected and fixed through a fixing device, and when the fiberscope unit and the camera unit are connected, the rear end of the image fiber 1 is close to the eyepiece adapter 11.

[0070] The image fiber holder fixing cover in the fiberscope part of the present application and the outer cylinder in the camera part are connected by a plug-in structure, so that there is no connection structure between the eyepiece adapter and the image fiber in the fiberscope part, that is, the traditional snap connection between the two is replaced, which can significantly reduce the overall size of the connection part. Combined with the camera device integrated in the handle shell, the volume of the entire fiberscope is more compact and more suitable for operation in a narrow space, thereby improving the flexibility and convenience of use. This type of ductoscope does not need to be fixed on the telescopic rod when in use, which greatly shortens the length of the fiberscope part, especially the size of the image fiber in the fiberscope part. On the one hand, it reduces the risk of damaging the image fiber during operation and reduces the cost of use. On the other hand, the shorter fiberscope part ensures a better image transmission effect.

[0071] The plug-in structure includes a plug-in portion and a matching portion. The plug-in portion can be arranged on the rear end face of the fiber holder fixing cover 6 or the front end face of the outer tube 10. When the plug-in portion is arranged on the rear end face of the fiber holder fixing cover 6, the matching portion is arranged on the front end face of the outer tube 10. When the plug-in portion is arranged on the front end face of the outer tube 10, the matching portion is arranged on the rear end face of the fiber holder fixing cover 6.

[0072] When the fiberscope part and the camera part are connected, the plug part is inserted into the matching part, and the rear end face of the image fiber holder fixing cover 6 fits with the front end face of the outer tube 10. The matching design of the plug part and the matching part can ensure that the rear end face of the image fiber holder fixing cover 6 and the front end face of the outer tube 10 are completely fitted, thereby achieving high-precision alignment between the rear end of the image fiber 1 and the eyepiece adapter 11. This helps to reduce the loss in the optical signal transmission process and improve the clarity and resolution of the image.

[0073] It is worth noting that the rear end of the image fiber 1 is in the same straight line with the central axis of the eyepiece adapter 11. In order to achieve this goal, the central hole axis of the image fiber holder 5 and the central axis of the eyepiece adapter 11 need to coincide.

[0074] In the present application, the plug-in portion can be one of a variety of plug-in forms, such as the plug-in portion is any one of a pin, a buckle, a mortise and a boss. Correspondingly, the matching portion is any one of a pin hole, a slot, a mortise and a bayonet. By inserting the pin into the pin hole, the buckle into the slot, the mortise into the mortise, and the boss into the bayonet, the connection between the fiber seat fixing cover 6 and the outer tube 10 can be achieved.

[0075] It is worth noting that only one of the plug-in portion and the mating portion is provided, and the positioning of the fiberscope portion and the camera portion is facilitated by positioning in one place.

[0076] In the present application, the fixing device includes a tightening handwheel 7; the tightening handwheel 7 is a hollow structure, the rear end of its inner ring is provided with a threaded portion, the front end is provided with an annular protrusion 701 protruding inwardly, the front end of the outer periphery of the fiber seat base 3 has an annular step structure, and the front end of the outer periphery of the outer cylinder 10 is provided with a front end thread, the tightening handwheel 7 is sleeved on the fiber seat base 3, the inner wall of the front end annular protrusion 701 is against the annular step structure on the fiber seat base 3, and the threaded portion at the rear end is connected to the front end thread of the outer periphery of the outer cylinder 10.

[0077] The tightening hand wheel 7 is hollow inside, has a threaded portion on the rear inner circle, and has an annular protrusion on the front inner circle, which is not only convenient for the operator to manually tighten or loosen, but also can effectively prevent loosening due to long-term use. In addition, it can also tightly fix the fiber base 3 on the outer cylinder 10, further enhancing the stability of the entire system.

[0078] Furthermore, the fixing device further comprises a locking nut 8 , which is sleeved on the outer wall of the fiber holder base 3 and connected thereto, and the rear end face of the locking nut 8 abuts against the front end face of the tightening hand wheel 7 .

[0079] The locking nut 8 forms a double locking mechanism by abutting against the front end surface of the tightening hand wheel 7. This design not only strengthens the fixing effect of the tightening hand wheel 7, but also effectively prevents the tightening hand wheel 7 from loosening due to vibration or impact, thereby improving the stability of the overall structure.

[0080] It should be noted that the present application ensures a fast and firm connection by first positioning the inside and then locking and fixing the outside. Specifically, the present application provides a plug-in structure so that the camera part and the fiberscope part can be quickly aligned, and after alignment, the camera part and the fiberscope part are connected and fixed by a fixing device; the plug-in structure provided in the present application reduces the difficulty of alignment. The form of connection and fixing by a fixing device can be quickly installed and disassembled each time it is used, and the fixing device adopts the form of peripheral threads to ensure the stability of the structure after connection and fixing.

[0081] In one embodiment, the connector is a split structure, and the connector includes an image fiber seat 5 and an image fiber seat fixing cover 6; the image fiber seat 5 has a front end and a rear end, and the front end of the image fiber seat 5 is connected to the rear end of the image fiber seat base 3, and the rear end is exposed from the image fiber seat base 3. The front end of the image fiber seat 5 is connected to the rear end of the image fiber seat base 3, and this design ensures the tightness and reliability of the connection, and avoids loosening or falling off during use.

[0082] The image fiber holder fixing cover 6 covers the rear end of the image fiber holder 5, and the image fiber holder fixing cover 6 is connected to the image fiber holder base 3. The image fiber holder fixing cover 6 can not only fix the image fiber holder 5, but also protect the rear end of the image fiber holder 5, prevent external pollutants from entering, keep the internal components clean and dry, and extend the service life of the device.

[0083] The fiber holder 5 and the fiber holder fixing cover 6 are modularly designed so that the fiber holder 5 and the fiber holder fixing cover 6 can be disassembled and replaced independently. If a part has a problem, it can be replaced separately without replacing the entire connector, thereby reducing maintenance costs.

[0084] Furthermore, a recessed annular platform 305 is provided at the rear end opening of the image fiber seat base 3, and the front end of the image fiber seat 5 is connected to the annular platform 305; a convex ridge 501 is provided on the outer periphery of the rear end of the image fiber seat 5, and a first groove 603 is provided on the inner hole wall of the image fiber seat fixing cover 6, and the rear end of the image fiber seat 5 is inserted into the inner hole of the image fiber seat fixing cover 6, and the convex ridge 501 is located in the first groove 603.

[0085] The annular platform 305 provides a stable support to ensure that the front end of the image fiber holder 5 is firmly positioned in the image fiber holder base 3 to prevent displacement or loosening during use.

[0086] The cooperation between the convex ridge 501 and the first groove 603 plays a guiding role on the one hand, which can quickly realize the connection between the image fiber holder 5 and the image fiber holder fixing cover 6, ensure the precise alignment of the image fiber holder 5 in the image fiber holder base 3 and the image fiber holder fixing cover 6, reduce the error during installation, and improve the use accuracy of the equipment. On the other hand, it ensures that the rear end of the image fiber holder 5 is fixed in the image fiber holder fixing cover 6, further enhancing the stability of the structure.

[0087] The plug-in part or the matching part is arranged on the rear end face of the image fiber holder fixing cover 6; when the fiberscope part and the camera part are connected, the rear end face of the image fiber holder fixing cover 6 fits with the front end face of the outer tube 10. Furthermore, the plug-in part is a boss and the matching part is a bayonet.

[0088] In another embodiment, the connecting piece is an integral structure, that is, the connecting piece is an external structure having an image fiber holder 5 and an image fiber holder fixing cover 6 to cooperate with other assembly structures. This design facilitates the connection between the connecting piece and the image fiber holder base 3.

[0089] In the present application, the fiberscope part also includes a main mirror tube 2 and an illuminating optical fiber filament 4. The main mirror tube 2 is connected to the front end inside the imaging fiber holder base 3 and is partially exposed. The axis of the main mirror tube 2 located in the imaging fiber holder base 3 coincides with the axis of the central hole of the imaging fiber holder 5. The front end of the imaging fiber 1 is connected to the main mirror tube 2 and is installed with a self-focusing imaging objective lens 101; the front end of the illuminating optical fiber filament 4 is located in the main mirror tube 2 and is wrapped around the outer periphery of the imaging fiber 1.

[0090] By adopting this design, the axis of the main mirror tube 2 located in the inner part of the image fiber holder base 3, the axis of the central hole of the image fiber holder 5 and the central axis of the eyepiece adapter 11 are in the same straight line, ensuring the image transmission effect of the image fiber. The front end of the illumination optical fiber filament 4 is located in the main mirror tube 2 and wrapped around the periphery of the image fiber 1, ensuring that the illumination light can be evenly irradiated to the target area, improving the imaging quality. The self-focusing imaging objective lens 101 is a prior art, and this application will not be described in detail, which can enable the parallel light entering the objective lens to be naturally guided to the focus.

[0091] In summary, the fiberscope part of the present application includes a tightening handwheel 7, a locking nut 8, an illumination optical fiber filament 4 for illumination, an imaging fiber 1 for acquiring an image, an imaging fiber holder base 3, and a main scope tube 2, an imaging fiber holder 5 and an imaging fiber holder fixing cover 6 installed on the imaging fiber holder base 3, and this part is detachable and replaceable.

[0092] Furthermore, a notch is provided on the rear end outer wall of the imaging fiber holder base 3, and through holes are provided inside the imaging fiber holder fixing cover 6 and the outer tube 10. The rear end of the lighting optical fiber filament 4 passes through the main mirror tube 2, and passes out from the notch on the rear end outer wall of the imaging fiber holder base 3, and then passes into the through hole on the imaging fiber holder fixing cover 6; the through holes in the outer tube 10 are arranged along its length direction for installing the lighting light source. When the fiber mirror part and the camera part are connected, the axis of the first through hole 602 coincides with the axis of the second through hole 1007.

[0093] The rear end of the illumination optical fiber filament 4 of the present application passes through the main mirror tube 2, and penetrates into the through hole of the image fiber holder fixing cover 6 from the notch on the rear end outer wall of the image fiber holder base 3. This path design ensures the smooth transmission of the illumination optical fiber filament 4 and reduces the loss of the light source. When the fiber mirror part and the camera part are connected, the axis of the through hole inside the image fiber holder fixing cover 6 and the outer tube 10 coincide, ensuring that the light path of the illumination light source can be smoothly transmitted to the illumination optical fiber filament 4 at the front end. This design not only improves the transmission efficiency of the light path, but also simplifies the connection process.

[0094] It is worth noting that the through holes inside the fiber holder fixing cover 6 and the outer tube 10 are both arranged on the plug-in structure. By arranging the two through holes on the plug-in structure, on the one hand, it can be ensured that the axes of the two through holes perfectly coincide when connected, and it can be ensured that the light emitted by the illumination light source can be smoothly transmitted to the imaging area at the front end through the illumination optical fiber filament 4, thereby improving the transmission efficiency of the optical path and the imaging quality.

[0095] In the present application, the camera unit also includes a focusing wheel 9, an eyepiece adapter lens 11 is connected to the outer tube 10 along the axial direction of the outer tube 10, and the eyepiece adapter lens 11 can move along the axial direction of the outer tube 10, and the tube wall of the outer tube 10 is provided with a groove; the focusing wheel 9 is sleeved on the outer wall of the outer tube 10, and the inner wall of the focusing wheel 9 is provided with a second groove 901, and the outer wall of the eyepiece adapter lens 11 is connected to an adjusting rod; the top end of the adjusting rod passes through the groove of the outer tube 10 and is located in the second groove 901; the direction of the groove 1004 is inclined to the axial direction of the outer tube 10, and when the focusing wheel 9 rotates, the eyepiece adapter lens 11 can move along the axis of the outer tube 10 to approach or move away from the rear end of the image fiber 1.

[0096] When in use, the user manually rotates the focus wheel 9 to achieve the focusing function. The inner wall of the focus wheel 9 is provided with a second groove 901, which contacts the top of the adjustment rod. When the focus wheel 9 rotates, due to the existence of the second groove 901, the adjustment rod will rotate with the focus wheel 9. Because the slot 1004 is arranged obliquely to the axial direction of the outer cylinder 10, when the focus wheel 9 rotates, the adjustment rod will not only rotate with the focus wheel 9, but also move along the direction of the slot 1004. The bottom end of the adjustment rod is connected to the eyepiece adapter 11. As the adjustment rod moves in the slot 1004, the eyepiece adapter 11 will move along the axial direction of the outer cylinder 10, that is, close to or away from the rear end of the image fiber 1, thereby changing the focal position to achieve the purpose of focusing.

[0097] The present application utilizes the cooperation of the focus dial 9, the adjustment rod and the grooves on the wall of the outer tube 10 to make the design of the entire focus mechanism more compact, save space, and facilitate the development of miniaturized products.

[0098] In some further embodiments, the adjusting rod is a screw. The inclination angle of the axial direction of the slot and the outer cylinder is 45°. By designing the slot to be inclined at 45°, the adjusting rod can be moved a greater distance along the axial direction of the outer cylinder 10 at the same rotation angle. This allows the product to achieve a larger focusing range with a smaller rotation angle change. The 45° angle design helps to optimize the force transmission efficiency. When the user rotates the focusing wheel 9, the force can be more effectively converted into the axial movement of the adjusting rod, reducing the loss of force and making the focusing process smoother. The 45° inclined slot design can enhance the stability of the structure. During the focusing process, the adjusting rod is not only subjected to forces perpendicular to the axial direction, but also to forces along the slot direction. The combination of these forces can better maintain the stability of the adjusting rod and the eyepiece adapter 11, reducing shaking and deviation.

[0099] Furthermore, the camera unit also includes a focus wheel fixing cover 14, which is sleeved on the outer wall of the outer tube 10 and fixedly connected thereto, and the focus wheel 9 is located between the focus wheel fixing cover 14 and the front end of the handle housing 13.

[0100] Example 2

[0101] This embodiment provides a fiberscope and camera connection structure, which explains and expands the first embodiment. Figure 1 and Figure 2 As shown, it includes a fiberscope part and a camera part. The fiberscope part includes an imaging fiber 1, a main lens tube 2, an imaging fiber holder base 3, an illumination optical fiber filament 4, an imaging fiber holder 5, an imaging fiber holder fixing cover 6, a tightening hand wheel 7 and a locking nut 8. A self-focusing imaging objective lens 101 is provided at the front end of the imaging fiber 1.

[0102] The camera unit includes a focus dial 9, an outer tube 10, an eyepiece adapter 11, a camera device 12, a handle housing 13, a focus dial fixing cover 14, a handle tail cover 15, and a camera device 12. The camera device 12 is located in the handle housing 13 and connected to the rear end of the outer tube 10. The camera device 12 includes a CMOS fixing seat 1201, a filter 1202, a lens shading pad 1203, and a CMOS imaging system 1204, which are arranged in sequence.

[0103] As a specific design plan:

[0104] like Figure 3 and Figure 4As shown in the figure, the image fiber seat base 3 is a three-section cylindrical structure, including a front section 301, a middle section 302 and a rear section 303 with outer diameters increasing in sequence, the front section 301 and the middle section 302 are connected through a small hole 304, and an inward-recessed annular platform 305 is provided at the end opening of the rear section 303; the front end of the image fiber seat 5 is tightly attached to the annular platform 305 on the image fiber seat base 3, and the rear end portion is exposed, the image fiber seat fixing cover 6 covers the exposed portion of the image fiber seat 5, and the front end face of the image fiber seat fixing cover 6 is in contact with the end face of the rear section 303 of the image fiber seat base 3 and is connected by screws (such as Figure 7 shown).

[0105] The rear end of the main mirror tube 2 is horizontally inserted into the small hole 304 in the image fiber base base 3; the outer wall of the rear section 303 of the image fiber base base 3 is provided with a first notch 3031, and the cover body of the image fiber base fixing cover 6 is provided with a first through hole 602 (such as Figure 6 As shown in FIG. 1 , the front end of the illumination optical fiber 4 passes through the first through hole 602 on the image fiber holder fixing cover 6, and then passes through the main mirror tube 2 from the first notch 3031, and surrounds the outer periphery of the image fiber 1. The front end of the image fiber 1 is connected to the self-focusing imaging objective lens 101. The outer wall of the main mirror tube 2 is also covered with a main mirror support tube inner tube 201 and a main mirror support tube outer tube 202 (as shown in FIG. Figure 2 The front ends of the primary mirror support tube inner tube 201 and the primary mirror support tube outer tube 202 are flush with the front end of the image fiber base 3, ensuring the alignment and coordination between the various components. The multi-layer tube support structure can effectively disperse the stress on the primary mirror tube during use, reduce the situation of excessive local stress, and extend the service life of the primary mirror tube and its related components.

[0106] like Figure 5 As shown, the outer wall of the fiber holder 5 is provided with a ridge 501, and the inner wall of the fiber holder fixing cover 6 is provided with a first groove 603 (as shown in FIG. Figure 6 As shown in the figure, the shapes of the convex rib 501 and the first groove 603 correspond to each other, and the image fiber holder fixing cover 6 covers the exposed part of the image fiber holder 5, and the position of the image fiber holder 5 is fixed by placing the convex rib 501 in the first groove 603.

[0107] like Figure 8 , Fig. 9 and Fig.10As shown, the outer cylinder 10 includes an outer cylinder body 1001, a connecting portion 1002 and an inner cylinder body 1003, and the connecting portion 1002 is connected to the rear end surface of the inner cylinder body 1003. The inner cylinder body 1003 is arranged inside the outer cylinder body 1001, and the outer cylinder body 1001 is sleeved on the front end of the outer periphery of the inner cylinder body 1003; the outer walls of the outer cylinder body 1001 and the inner cylinder body 1003 are provided with through slots 1004, and the inner cylinder body 1003 is provided with a center hole 1005. The front end of the eyepiece adapter lens 11 is horizontally inserted into the outer cylinder body 1001 from one end of the connecting portion 1002 of the outer cylinder 10 and its front end passes through the center hole 1005, and the outer wall of the eyepiece adapter lens 11 can be connected to the adjustment rod through the slot 1004; the inner wall of the focus dial 9 is provided with a second groove 901 (as shown in FIG. Fig.11 As shown), the focusing dial 9 is sleeved on the outer wall of the outer cylinder body 1001 of the outer cylinder 10, and the adjusting rod connected to the outer wall of the eyepiece adapter 11 is located in the second groove 901. When the focusing dial 9 is rotated, it can drive the adjusting rod to move in the second groove 901, so that the eyepiece adapter 11 can move forward and backward to adjust the focal length.

[0108] The rear end of the outer tube 10 is connected to the camera device 12 via the connecting portion 1002 , the front end is inserted into the rear end of the handle housing 13 , and the outer tube body 1001 is exposed from the front end of the handle housing 13 . The outer tube 10 is fixedly connected to the front end of the handle housing 13 via the connecting portion 1002 .

[0109] The inner cylinder 1003 of the outer cylinder 10 is provided with a second through hole 1007 in a horizontal direction, and the outer wall of the connecting portion 1002 is provided with a second notch 1008. The illumination light source extends into the second through hole 1007 through the second notch 1008 and reaches the front end of the second through hole 1007. Further, the illumination light source can be an LED lamp.

[0110] like Figure 1 and 2 As shown, the focus dial fixing cover 14 is sleeved on the outer wall of the outer tube 10 and fixedly connected thereto, the focus dial 9 is located between the focus dial fixing cover 14 and the front end of the handle housing 13, and the position of the focus dial 9 is fixed by the focus dial fixing cover 14. The handle tail cover 15 has an open end and a closed end, and the open end is connected to the rear end of the handle housing 13; preferably, the open end is connected to the rear end of the handle housing 13 through a thread.

[0111] like Figure 1 and Figure 2As shown, the camera device 12 includes a CMOS holder 1201, a filter 1202, a lens shading pad 1203 and a CMOS imaging system 1204 arranged in sequence, the CMOS imaging system 1204 is installed on the side of the CMOS holder 1201, and the filter 1202 and the lens shading pad 1203 are located between the two; the CMOS holder 1201 is provided with a protruding cylindrical structure 12011 at the front end, and the cylindrical structure 12011 is inserted into the connecting portion 1002 of the outer cylinder 10, and then fixedly connected by a connecting device, so as to realize the connection between the outer cylinder 10 and the camera device 12; preferably, the connecting device is a screw. The outer wall of the CMOS holder 1201 is provided with a third notch 12012 for the wire to pass through, and the front end of the wire is connected to the lighting source for supplying power to the lighting source.

[0112] The rear end of the fiber holder fixing cover 6 is provided with a boss 601 (such as Figure 6 The inner cylinder body 1003 of the outer cylinder 10 is provided with a bayonet 1006 (as shown in FIG. Figure 8 As shown), the fiberscope part and the camera part are positioned and connected by inserting the boss 601 into the bayonet 1006, and are fixed by tightening the hand wheel 7 and the locking nut 8. The specific structure is as described in Example 1.

[0113] It is worth noting that the outer circumference of the connecting part 1002 is larger than the outer circumference of the outer cylinder 1001. The outer cylinder 1001 is sleeved on the front end of the outer circumference of the inner cylinder 1003. The connecting part 1002 is located in the handle shell 13 and connected to the front end of the handle shell 13 by screws; the inner cylinder 1003 is exposed from the front end of the handle shell 13. The inner diameter of the outer cylinder 1001 is matched with the outer diameter of the image fiber holder fixing cover 6; when the fiberscope part and the camera part are connected, the outer circle of the image fiber holder fixing cover 6 is connected to the inner circle of the outer cylinder 1001, and the rear end face of the image fiber holder fixing cover 6 is fitted with the front end face of the inner cylinder 1003.

[0114] The larger outer circumference of the connection part 1002 provides stronger mechanical support and enhances the strength of the connection point. This design can effectively prevent loosening or falling off due to external forces during use. The connection part 1002 is fixed to the front end of the handle housing 13 by screws. This connection method is not only firm and reliable, but also ensures stability after long-term use, reducing the risk of loosening due to vibration or impact.

[0115] The inner cylinder 1003 is exposed from the front end of the handle housing 13, and can be conveniently connected with other components (such as the fiber holder fixing cover 6), thereby improving the convenience of assembly and disassembly.

[0116] For example, the rear end face of the fiber holder fixing cover 6 fits with the front end face of the inner cylinder 1003: this fitting design not only ensures the close contact between the two components, but also reduces the gap in the middle, thereby improving the stability and sealing of the optical system.

[0117] The inner diameter of the outer cylinder 1001 matches the outer diameter of the fiber holder fixing cover 6. This size matching design ensures that the fiber holder fixing cover 6 can be accurately inserted into the outer cylinder 1001, avoiding misalignment problems caused by size mismatch and improving assembly accuracy.

[0118] Furthermore, the inner diameter of the outer cylinder 1001 is adapted to the outer diameter of the image fiber holder fixing cover 6, and the inner diameter of the outer cylinder 1001 may be 0.1mm-0.5mm larger than the outer diameter of the image fiber holder fixing cover 6. During use, the fiberscope part and the camera handle part are directly connected to the bayonet, and then the handle tee and the sheath tube joint are assembled, and the focus dial on the camera handle is adjusted until the image is clear.

[0119] Example 3

[0120] Based on the fiberscope and camera connection structures provided in Example 1 and Example 2, this embodiment provides a fiberscope and camera connection method, including assembling the fiberscope part, assembling the camera part, and combining the fiberscope part and the camera part.

[0121] Fiberscope assembly process:

[0122] A self-focusing imaging objective lens 101 is installed at the front end of the image fiber 1, and the illumination optical fiber 4 is connected to the periphery of the front end of the image fiber 1; the rear end of the image fiber 1 passes through the central hole of the image fiber holder 5, and the rear end of the image fiber 1 protrudes from the central hole of the image fiber holder 5 by 0.05-0.15mm.

[0123] The self-focusing imaging objective lens 101 passes through the image fiber holder base 3 and extends out of the front end of the image fiber holder base 3. The front end of the image fiber holder 5 is installed into the rear end of the image fiber holder base 3. The rear end of the image fiber holder 5 is partially exposed. The image fiber holder fixing cover 6 covers the exposed part of the image fiber holder 5 and is connected to the image fiber holder base 3.

[0124] Camera assembly process:

[0125] The camera device 12 is connected to the rear end of the outer tube 10, the eyepiece adapter 11 is connected to the front end of the outer tube 10, and the outer tube 10 and the handle shell 13 are connected, so that the rear end of the outer tube 10 is located in the handle shell 13 and the front end of the outer tube 10 is exposed at the front end of the handle shell 13.

[0126] The fiberscope part and the camera part are combined.

[0127] The rear end of the imaging fiber holder fixing cover 6 and the front end of the outer tube 10 are connected through a plug-in structure, and the fiberscope part and the camera part are connected and fixed through a fixing device; when the fiberscope part and the camera part are connected, the rear end of the imaging fiber 1 is close to the eyepiece adapter 11.

[0128] The combination of the fiberscope part and the camera part further includes the following process:

[0129] Insert the boss 601 on the rear end surface of the fiber holder fixing cover 6 into the bayonet 1006 on the front end surface of the outer tube 10 .

[0130] The tightening hand wheel 7 with a hollow structure is put on the image fiber holder base 3, the inner wall of the annular protrusion 701 at the front end of the tightening hand wheel 7 is pressed against the annular step structure on the image fiber holder base 3, and the threaded part at the rear end of the tightening hand wheel 7 is connected with the threaded part at the front end of the outer circumference of the outer cylinder 10. Specifically, the assembly process and principle of the fiberscope and camera connection structure are as follows:

[0131] 1. Fiberscope Part Process:

[0132] 1. After the image fiber 1 is cut, both ends are polished, the self-focusing imaging objective lens 101 is installed on the end face of the image fiber 1 and cured, the main mirror tube is cut, polished and cleaned, and multiple illumination optical fibers are counted out, glue is prepared, and then the objective lens assembly is threaded (the illumination optical fiber is inserted into the main mirror tube 2 and is close to the inner wall of the main mirror tube 2, and the self-focusing imaging objective lens 101 with the image fiber 1 is inserted into the main mirror tube 2 and is wrapped by the illumination optical fiber), wait for the glue to cure, and then polish the objective lens, and after polishing, the imaging is checked.

[0133] 2. Clean the image fiber holder 5, apply glue to the other end of the image fiber 1 and insert it into the center hole of the image fiber holder 5, with the end face of the image fiber protruding 0.1mm above the plane of the center hole of the image fiber holder, and then install the image fiber protection sheet and glue it (the outer periphery of the image fiber protection sheet is glued to the connecting hole at the rear end of the image fiber holder 5, and the image fiber protection sheet is used to protect the image fiber 1 protruding from the image fiber holder).

[0134] 3. Insert the front end of the assembled component (the side of the self-focusing imaging objective lens 101) into the small hole 304 (the small hole 304 is a circular hole) from the rear end of the image fiber holder base 3, then place the front end of the image fiber holder 5 on the annular platform 305 of the image fiber holder base 3 (the diameter of the annular platform is about 0.1 mm larger than the outer diameter of the boss at the front end of the image fiber holder 5), then clean the first through hole 602 (the first through hole 602 is a circular hole) on the image fiber holder fixed cover 6, insert the illumination optical fiber into the first through hole 602, and finally align the first groove 603 on the image fiber holder fixed cover 6 with the convex ridge 501 on the image fiber holder. Tighten the left and right fastening screws to fix the image fiber holder fixed cover 6 on the image fiber holder base 3 (the image fiber holder fixed cover 6 is provided with left-right symmetrical through holes, the image fiber holder base 3 is provided with left-right symmetrical screw holes, and the fastening screws penetrate the through holes of the image fiber holder fixed cover 6 and are inserted into the screw holes of the image fiber holder base 3).

[0135] 4. Prepare glue, put the main mirror support tube outer tube 202 and the main mirror support tube inner tube 201 on the main mirror tube 2 in sequence and glue and cure them with glue, so that the front end surfaces of the main mirror support tube outer tube 202 and the main mirror support tube inner tube 201 are on the same plane as the front end surface of the image fiber base 3.

[0136] 5. Insert the tightening hand wheel 7 from the front end of the fiber base 3, and then screw the front locking nut 8 into the thread at the front end of the fiber base 3, so that the tightening hand wheel 7 can be freely twisted on the fiber base.

[0137] 2. Camera handle part process:

[0138] 1. Install the CMOS imaging system 1204 on the CMOS fixing seat 1201, adjust the focal plane and the visual axis angle at the same time, and then fix it.

[0139] 2. Insert the eyepiece adapter lens 11 into the outer tube 10, align the M2 threaded hole on the eyepiece adapter lens 11 with the slot 1004 on the outer tube 10, and screw in an M2 screw.

[0140] 3. Connect and fasten the assembled outer cylinder 10 and CMOS fixing seat 1201 with screws (CMOS fixing seat 1201 is connected to the connecting portion 1002 of the outer cylinder 10), and then insert the entire assembly from the tail of the rear end of the handle shell 13, align the three openings at the front end of the handle shell 13 with the three threaded holes on the connecting portion 1002 of the outer cylinder 10, and tighten the screws to fix it.

[0141] 4. Insert the focus wheel 9 from the front end of the outer tube 10 so that the M2 screw on the eyepiece adapter 11 is aligned with the second groove 901 on the focus wheel 9. Then insert the focus wheel fixing cover 14 from the front end of the outer tube 10, align the three openings on the focus wheel fixing cover 14 with the threaded holes on the outer tube body 101, and screw in the fastening screws.

[0142] 5. Connect the FPC line of the CMOS imaging system 1204 with the cable on the handle tail cover 15, insert the connected cable into the handle housing 13, and connect the handle housing 13 and the handle tail cover 15.

[0143] Design of separation of optical fiber and imaging fiber: the front end of the illumination optical fiber filament 4 and the imaging fiber 1 are both covered in the main mirror tube 2. After the rear end extends out of the main mirror tube 2, the illumination optical fiber filament 4 converges into a strand and extends out from the slot (first notch 3031) at the rear of the imaging fiber holder base 3, and the imaging fiber 1 is inserted into the center hole of the imaging fiber holder 5 along the center line of the imaging fiber holder base 3, and the illumination optical fiber filament 4 extending from the side is inserted into the first through hole 602 of φ1.2mm on the imaging fiber holder fixing cover 6, and then the illumination optical fiber filament 4 is continued to be inserted into a stainless steel tube, and then glue is applied to the inside and outside of the stainless steel tube and the steel tube is pushed into the first through hole 602 on the imaging fiber holder fixing cover 6; after the glue is cured, the end face of the illumination optical fiber filament 4 is ground and polished.

[0144] 3. Focusing principle

[0145] The clarity of the imaging picture can be adjusted by adjusting the front and rear position of the eyepiece in the outer tube, and the size of the imaging picture on the display screen can be adjusted by adjusting the front and rear position of the adapter lens in the outer tube.

[0146] 4. Eyepiece focusing method and the role of adapter lens

[0147] The eyepiece is installed in the outer tube, and there is an M2 threaded hole on the eyepiece tube, and a notch at an angle of 45° along the axial direction is opened on the side wall of the outer tube. Insert the eyepiece into the outer tube, align the threaded hole on the eyepiece tube with the notch on the side wall of the outer tube, and screw an M2 screw through the notch on the outer tube into the threaded hole on the eyepiece tube. In this way, the eyepiece will move forward and backward along the notch on the side wall of the outer tube driven by the M2 screw, thereby adjusting the clarity of the image.

[0148] The adapter lens is used to adjust the size of the imaging picture on the CMOS photosensitive module, which is directly reflected in the change of the picture size on the display screen.

[0149] 5. Sensor assembly requirements and connection between base and lens

[0150] Place the filter and lens shading pad into the CMOS mount in turn, then place the CMOS imaging system on the CMOS mount, screw in two M2 screws, adjust the front, back, left, and right positions of the CMOS imaging system mounting plate on the CMOS mount, ensure that the visual axis coincides with the center line of the CMOS mount, and then tighten the two M2 screws to fix the mounting plate; then adjust the three screws on the back of the mounting plate to adjust the parallelism of the CMOS photosensitive surface and the standard image surface to ensure that there is no distortion around the imaging screen, then drip UV glue on the three screws and cure it to prevent the screws from loosening and affecting the parallelism of the photosensitive surface.

[0151] 6. Direction of optical path, effect of light cone, and optical path limit design

[0152] Imaging optical path: The external image is refracted by the self-focusing imaging objective lens so that the light converges on the front end of the imaging fiber. The image is transmitted to the rear end of the imaging fiber using the principle of light transmission by the imaging fiber. The light is then refracted by the eyepiece and adapter lens to the CMOS photosensitive device, and finally converted into signal output.

[0153] Illumination optical path: When the fiberscope is produced, the illumination optical fiber is wrapped around the self-focusing imaging objective lens and the image fiber, and then inserted into the main mirror tube. The ends of the optical fibers are gathered together and solidified on the image fiber holder fixing cover through glue. The illumination optical fiber of the camera handle extends from the front end of the outer tube to the tail of the outer tube through the hole on the side wall of the outer tube, and then extends to the tail of the handle through the space reserved on the CMOS fixing seat, and finally extends from the tail sleeve of the handle to the cold light source host to provide an illumination source for the fiberscope.

[0154] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiberscope and camera connection structure, characterized in that: include: The camera unit comprises an outer tube (10), an eyepiece adapter (11) and a handle housing (13), wherein the rear end of the outer tube (10) is located inside the handle housing (13), the front end is exposed at the front end of the handle housing (13), and the eyepiece adapter (11) is connected to the front end of the outer tube (10); The fiberscope part comprises an imaging fiber (1), an imaging fiber base (3) and a connecting piece, wherein the connecting piece is connected to the rear end of the imaging fiber base (3), the rear end of the imaging fiber (1) passes through the central hole of the connecting piece, and the front end passes through the front end of the imaging fiber base (3); The rear end of the connecting piece and the front end of the outer cylinder (10) are matched via a plug-in structure, and the fiberscope portion and the camera portion are connected and fixed via a fixing device. When the fiberscope portion and the camera portion are connected, the rear end of the image fiber (1) is close to the eyepiece adapter lens (11).

2. The fiberscope and camera connection structure according to claim 1, characterized in that: The plug-in structure comprises a plug-in portion and a matching portion; The plug-in portion is arranged on the rear end surface of the fiber holder fixing cover (6) or the front end surface of the outer tube (10); the matching portion is arranged on the front end surface of the outer tube (10) or the rear end surface of the fiber holder fixing cover (6); When the fiberscope part and the camera part are connected, the plug-in part is inserted into the matching part, and the rear end surface of the image fiber holder fixing cover (6) and the front end surface of the outer cylinder (10) are in contact with each other; Preferably, the plug-in portion is any one of a pin, a buckle, a mortise and a boss, and the mating portion is any one of a pin hole, a slot, a mortise and a bayonet.

3. The fiberscope and camera connection structure according to claim 1, characterized in that: The fixing device comprises a tightening hand wheel (7); The tightening hand wheel (7) is a hollow structure, the rear end of the inner ring of which is provided with a threaded portion, and the front end is provided with an annular protrusion (701) protruding inwardly, the front end of the outer periphery of the image fiber seat base (3) has an annular step structure, and the front end of the outer periphery of the outer cylinder (10) is provided with a front end thread, the tightening hand wheel (7) is sleeved on the image fiber seat base (3), the inner wall of the front end annular protrusion (701) abuts against the annular step structure on the image fiber seat base (3), and the rear end threaded portion is connected to the front end thread of the outer periphery of the outer cylinder (10); Preferably, the fixing device further comprises a locking nut (8), the locking nut (8) being sleeved on the outer wall of the fiber holder base (3) and connected thereto, the rear end face of the locking nut (8) being against the front end face of the tightening hand wheel (7).

4. The fiberscope and camera connection structure according to any one of claims 1 to 3, characterized in that: The connecting piece comprises an image fiber holder (5) and an image fiber holder fixing cover (6); The image fiber seat (5) has a front end and a rear end, the front end of the image fiber seat (5) is connected to the rear end of the image fiber seat base (3), and the rear end is exposed from the image fiber seat base (3); The image fiber seat fixing cover (6) covers the rear end of the image fiber seat (5), and the image fiber seat fixing cover (6) is connected to the image fiber seat base (3).

5. The fiberscope and camera connection structure according to claim 4, characterized in that: A recessed annular platform (305) is provided at the rear end opening of the image fiber holder base (3), and the front end of the image fiber holder (5) is connected to the annular platform (305); The outer periphery of the rear end of the image fiber holder (5) is provided with a convex ridge (501), the inner hole wall of the image fiber holder fixing cover (6) is provided with a first groove (603), the rear end of the image fiber holder (5) is inserted into the inner hole of the image fiber holder fixing cover (6), and the convex ridge (501) is located in the first groove (603); Preferably, the plug-in portion or the matching portion is arranged on the rear end surface of the fiber holder fixing cover (6); When the fiberscope part and the camera part are connected, the rear end surface of the image fiber holder fixing cover (6) and the front end surface of the outer cylinder (10) are in contact with each other.

6. The fiberscope and camera connection structure according to claim 1, characterized in that: The fiberscope part also includes a main scope tube (2) and an illumination optical fiber (4); the main scope tube (2) is connected to the front end of the image fiber base (3) and is partially exposed; The rear end of the imaging fiber (1) is connected to the imaging fiber seat (5) and exposed at the rear end of the imaging fiber seat (5); the rear end of the illumination optical fiber (4) is connected to the imaging fiber seat fixing cover (6) and is flush with the rear end surface of the imaging fiber seat fixing cover (6); the front end of the imaging fiber (1) and the front end of the illumination optical fiber (4) are both located at the front end of the main mirror tube (2); Preferably, a self-focusing imaging objective lens (101) is provided at the front end of the image fiber (1); the outer wall of the main mirror tube (2) is also covered with a main mirror support tube inner tube (201) and a main mirror support tube outer tube (202) in sequence, and the front ends of the main mirror support tube inner tube (201) and the main mirror support tube outer tube (202) are both flush with the front end of the image fiber base (3).

7. The fiberscope and camera connection structure according to claim 1, characterized in that: The outer cylinder (10) comprises an outer cylinder body (1001), a connecting portion (1002) and an inner cylinder body (1003), wherein the connecting portion (1002) is connected to the rear end surface of the inner cylinder body (1003), and the outer circumference of the connecting portion (1002) is greater than the outer circumference of the inner cylinder body (1003); The connecting portion (1002) is located inside the handle housing (13) and is fixedly connected to the front end of the handle housing (13); the inner cylinder (1003) is exposed from the front end of the handle housing (13); The outer cylinder (1001) is sleeved on the front end of the outer circumference of the inner cylinder (1003), and the inner diameter of the outer cylinder (1001) is matched with the outer diameter of the fiber holder fixing cover (6); the outer walls of the outer cylinder (1001) and the inner cylinder (1003) are provided with through slots (1004); When the fiberscope part and the camera part are connected, the outer ring of the image fiber holder fixing cover (6) is connected to the inner ring of the outer cylinder (1001), and the rear end surface of the image fiber holder fixing cover (6) is fitted to the front end surface of the inner cylinder (1003); Preferably, a second through hole (1007) is provided in the inner cylinder (1003), a second notch (1008) is provided on the outer wall of the connecting portion (1002), and the second notch (1008) is connected to the second through hole (1007); The second through hole (1007) is coaxially arranged with the illumination optical fiber (4) in the image fiber holder fixing cover (6).

8. The fiberscope and camera connection structure according to claim 4, characterized in that: The image fiber holder base (3) is a three-section cylindrical structure, comprising a front section (301), a middle section (302) and a rear section (303) whose outer diameters increase in sequence, the front section (301) and the middle section (302) are connected via a small hole (304), an inwardly recessed annular platform (305) is provided at the end opening of the rear section (303), and the front end of the image fiber holder (5) is closely attached to the annular platform (305) on the image fiber holder base (3); A first notch (3031) is provided on the outer wall of the rear section (303) of the imaging fiber base (3); one end of the illumination optical fiber (4) is connected to the imaging fiber base fixing cover (6), and the other end passes through the first notch (3031) and is connected to the main mirror tube (2) on the imaging fiber base (3).

9. The fiberscope and camera connection structure according to claim 1, characterized in that: The camera unit further comprises a focus dial (9), the eyepiece adapter lens (11) is connected inside the outer tube (10) along the axial direction of the outer tube (10), and a groove (1004) is provided on the wall of the outer tube (10); The focus dial (9) is sleeved on the outer wall of the outer tube (10), and the inner wall of the focus dial (9) is provided with a second groove (901); the outer wall of the eyepiece adapter (11) is connected with an adjustment rod; the top end of the adjustment rod passes through the slot (1004) and is located in the second groove (901); The direction of the slot (1004) is inclined to the axial direction of the outer tube (10), and when the focus dial (9) is rotated, the eyepiece adapter lens (11) can move along the axis of the outer tube (10) to approach or move away from the rear end of the image fiber (1); The camera unit also includes a focus wheel fixing cover (14), which is sleeved on the outer wall of the outer cylinder (10) and fixedly connected thereto, and the focus wheel (9) is located between the front end of the focus wheel fixing cover (14) and the handle housing (13).

10. The fiberscope and camera connection structure according to claim 1, characterized in that: The rear end of the outer cylinder (10) is connected to a camera device (12), and the camera device (12) is located inside a handle housing (13); Preferably, the camera device (12) comprises a CMOS fixing seat (1201), a filter (1202), a lens shading pad (1203) and a CMOS imaging system (1204) which are arranged in sequence; the CMOS imaging system (1204) is mounted on a side of the CMOS fixing seat (1201), and the filter (1202) and the lens shading pad (1203) are located between the two. The CMOS fixing seat (1201) is provided with a protruding cylindrical structure (12011) at the front end, and the cylindrical structure (12011) is inserted into the rear end of the outer cylinder (10), and then fixedly connected by a connecting device, thereby realizing the connection between the outer cylinder (10) and the camera device (12).

11. A method for connecting a fiberscope and a camera, characterized in that: include: A self-focusing imaging objective lens (101) is installed at the front end of the image fiber (1), and an illumination optical fiber is connected to the periphery of the front end of the image fiber (1); the rear end of the image fiber (1) is passed through the central hole of the image fiber holder (5), and the rear end of the image fiber (1) protrudes from the central hole of the image fiber holder (5) by 0.05-0.15 mm; The self-focusing imaging objective lens (101) is passed through the image fiber holder base (3) and extends out of the front end of the image fiber holder base (3); the front end of the image fiber holder (5) is inserted into the rear end of the image fiber holder base (3); the rear end of the image fiber holder (5) is exposed; the image fiber holder fixing cover (6) covers the exposed part of the image fiber holder (5) and is connected to the image fiber holder base (3); The camera device (12) is connected to the rear end of the outer tube (10), the eyepiece adapter (11) is connected to the front end of the outer tube (10), and the outer tube (10) and the handle shell (13) are connected so that the rear end of the outer tube (10) is located inside the handle shell (13) and the front end of the outer tube (10) is exposed from the front end of the handle shell (13); The rear end of the imaging fiber holder fixing cover (6) and the front end of the outer cylinder (10) are connected via a plug-in structure, and the fiberscope portion and the camera portion are connected and fixed via a fixing device; when the fiberscope portion and the camera portion are connected, the rear end of the imaging fiber (1) is close to the eyepiece adapter lens (11).

12. A breast ductoscope, comprising the fiberscope and camera connection structure according to any one of claims 1 to 9.

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