Fiberscope and camera connection structure, connection method and breast ductoscope

Abstract

The application provides a fiber scope and camera connection structure, a connection method and a breast ductoscope. The connection structure comprises a fiber scope part and a camera part. The camera part comprises an outer cylinder, an eyepiece adapter lens and a handle shell. The fiber scope comprises an image fiber, an image fiber seat base and a connecting piece. The connecting piece is connected to the rear end of the image fiber seat base. The rear end of the image fiber passes through the center hole of the connecting piece, and the front end passes out from the front end of the image fiber seat base. The rear end of the connecting piece and the front end of the outer cylinder are matched through a plug-in structure, and the fiber scope part and the camera part are connected and fixed through a fixing device. When the fiber scope part and the camera part are connected, the rear end of the image fiber is close to the eyepiece adapter lens. The connection structure is connected through a plug-in structure instead of a traditional buckle connection, which can significantly reduce the overall size of the connection part, improve the flexibility and convenience of use, improve the definition and contrast of the image, reduce the use cost and simplify the operation steps.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fiberoptic ductoscopy, and particularly relates to a fiber scope and camera connecting structure, a connecting method and a fiberoptic ductoscope. BACKGROUND

[0002] In the diagnosis and treatment of breast diseases, fiberoptic ductoscopy is an important tool. The conventional fiberoptic ductoscope can be used multiple times, but the multiple-use fiberoptic ductoscope has high disinfection requirements, and slight negligence can cause cross infection and serious consequences. Therefore, disposable fiberoptic ductoscopes appear on the market.

[0003] In the existing disposable fiberoptic ductoscope, such as the patent with the publication number CN219594534U, a light source connector and an image transmission bundle holder are arranged to connect the light source component and the camera component. This multi-point connection method can cause alignment difficulties and long installation time.

[0004] In the existing other fiberoptic ductoscopes, the connecting structure of the fiber scope eyepiece and the image fiber is usually a standard buckle. This type of fiberoptic ductoscope has a large structure size, and needs to be fixed on a telescopic rod during use, resulting in a long size of the fiber scope part and a large influence on the image transmission effect. SUMMARY

[0005] The application aims to solve the problems of large structure size of the fiberoptic ductoscope, long size of the fiber scope part and influence on the image transmission effect caused by the connection of the fiber scope eyepiece and the image fiber through the standard buckle.

[0006] Technical scheme: To achieve the above-mentioned application purposes, the application adopts the following technical scheme:

[0007] In a first aspect, the application discloses a fiber scope and camera connecting structure, which comprises:

[0008] The camera part comprises an outer cylinder, an eyepiece adapter lens and a handle shell. The rear end of the outer cylinder is located in the handle shell, and the front end of the outer cylinder is exposed from the front end of the handle shell. The front end of the outer cylinder is connected with the eyepiece adapter lens.

[0009] The fiber scope part comprises an image fiber, an image fiber seat base and a connecting piece. The connecting piece is connected to the rear end of the image fiber seat base. The rear end of the image fiber passes through the center hole of the connecting piece, and the front end of the image fiber passes out from the front end of the image fiber seat base.

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

[0011] As an embodiment, the plug-in structure comprises a plug-in part and a matching part;

[0012] The plug-in part is arranged on the rear end face of the image fiber seat fixing cover or the front end face of the outer cylinder; the matching part is arranged on the front end face of the outer cylinder or the rear end face of the image fiber seat fixing cover;

[0013] When the fiber scope part and the camera head part are connected, the plug-in part is inserted into the matching part, and the rear end face of the image fiber seat fixing cover and the front end face of the outer cylinder are attached;

[0014] Preferably, the plug-in part is any one of a pin, a buckle, a mortise and a boss, and the matching part is any one of a pin hole, a clamping groove, a mortise and a bayonet.

[0015] As an embodiment, the fixing device comprises a fastening hand wheel;

[0016] The fastening hand wheel is a hollow structure, the rear end of the inner circle is provided with a threaded part, the front end is provided with an annular protruding part protruding inward, 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 cylinder is provided with a front end thread; the fastening hand wheel is sleeved on the image fiber seat base, the inner wall of the front end annular protruding part abuts against the annular step structure on the image fiber seat base, and the threaded part at the rear end is connected with the front end thread of the outer periphery of the outer cylinder;

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

[0018] As an embodiment, the connecting piece comprises an image fiber seat and an image fiber seat fixing cover;

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

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

[0021] As an embodiment, the rear end opening of the image fiber seat base is provided with an inwardly recessed annular platform, and the front end part of the image fiber seat is connected in the annular platform;

[0022] The outer periphery of the rear end part of the image fiber seat is provided with a convex rib, 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 rib is located in the first groove;

[0023] Preferably, the plug-in part or the matching part is arranged on the rear end face of the image fiber seat fixing cover;

[0024] When the fiberscope part and the camera part are connected, the rear end surface of the image fiber seat fixing cover and the front end surface of the outer cylinder are fitted.

[0025] As an embodiment, the fiberscope part further comprises a main mirror tube and an illumination optical fiber, the main mirror tube is connected at the front end inside the image fiber seat base and partially exposed;

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

[0027] Preferably, the front end of the image fiber is provided with a self-focusing imaging objective; the outer wall of the main mirror tube is further sleeved with a main mirror support tube inner tube and a main mirror support tube outer tube in sequence, 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 embodiment, the outer cylinder comprises an outer cylinder body, a connecting part and an inner cylinder body, the connecting part is connected at the rear end surface of the inner cylinder body, and the outer peripheral dimension of the connecting part is larger than the outer peripheral dimension of the inner cylinder body;

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

[0030] The outer cylinder body is sleeved at the front end of the outer periphery of the inner cylinder body, the inner diameter of the outer cylinder body is matched with the outer diameter of the image fiber seat fixing cover; the outer walls of the outer cylinder body and the inner cylinder body are provided with through grooves;

[0031] When the fiberscope part and the camera part are connected, the outer periphery of the image fiber seat fixing cover and the inner periphery of the outer cylinder body are connected, the rear end surface of the image fiber seat fixing cover and the front end surface of the inner cylinder body are fitted;

[0032] Preferably, a second through hole is arranged inside the inner cylinder body, a second notch is arranged on the outer wall of the connecting part, and the second notch and the second through hole are communicated;

[0033] The second through hole and the illumination optical fiber inside the image fiber seat fixing cover are coaxially arranged.

[0034] As an embodiment, the image fiber seat base is a three-section cylindrical structure, comprising a front section, a middle section and a rear section with the outer diameters increasing in sequence, the front section and the middle section are communicated through a small hole, the end part of the rear section is provided with an inwardly recessed annular platform, and the front end of the image fiber seat is tightly attached to the annular platform on the image fiber seat base;

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

[0036] As an embodiment, the camera part further comprises a focusing dial, the eyepiece adapter lens is connected in the axial direction of the outer tube, and the tube wall of the outer tube is provided with a slot;

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

[0038] The direction of the slot is inclined to the axial direction of the outer tube, and when the focusing dial is rotated, the eyepiece adapter lens 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 part further comprises a focusing dial fixing cover, the focusing dial fixing cover is sleeved on the outer wall of the outer tube body and is fixedly connected therewith, and the focusing dial is located between the front end of the focusing dial fixing cover and the handle shell.

[0040] As an embodiment, the rear end of the outer tube is connected with a camera device, and the camera device is located in the handle shell.

[0041] Preferably, the camera device comprises a CMOS fixing seat, a filter, a lens shading pad and a CMOS imaging system arranged in sequence, the CMOS imaging system is installed on the side of the CMOS fixing seat, and the filter and the lens shading pad are located therebetween; the CMOS fixing seat is provided with a protruding cylindrical structure at the front end, the connection between the outer tube and the camera device is realized by inserting the cylindrical structure into the rear end of the outer tube and then fixedly connecting through a connecting device.

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

[0043] A self-focusing imaging objective is installed at the front end of the image fiber, and an illumination fiber is connected to the outer periphery of the front end of the image fiber; the rear end of the image fiber is passed through the center hole of the image fiber seat, and the rear end of the image fiber protrudes from the center hole of the image fiber seat;

[0044] The self-focusing imaging objective is passed through the image fiber seat base and protrudes from the front end of the image fiber seat base, the front end of the image fiber seat is installed into the rear end of the image fiber seat base, the rear end of the image fiber seat is partially exposed, and the image fiber seat fixing cover covers the exposed part of the image fiber seat and is connected with the image fiber seat base;

[0045] The camera device is connected to the rear end of the outer tube, the eyepiece adapter lens is connected to the front end of the outer tube, the outer tube and the handle shell are connected, and the rear end of the outer tube is located in the handle shell and the front end of the outer tube is exposed from the front end of the handle shell;

[0046] The rear end of the image fiber seat fixing cover and the front end of the outer cylinder are connected through the plug-in structure, and the fiber scope part and the camera part are connected and fixed through the fixing device; when the fiber scope part and the camera part are connected, the rear end of the image fiber is close to the ocular adapter lens.

[0047] In a third aspect, the present application provides a breast ductoscope, which comprises the fiber scope and camera connecting structure of any one of the above embodiments.

[0048] In the present application, the "front end" and "rear end" are described based on the imaging objective lens of the fiber scope as the front end and the handle tail cover as the rear end, and the front end and rear end of other components are described based on the above orientation.

[0049] Advantages:

[0050] 1. The image fiber seat fixing cover in the fiber scope part and the outer cylinder in the camera part are connected through the plug-in structure, so that there is no connecting structure between the ocular adapter lens and the image fiber in the fiber scope part, i.e., the traditional buckle connection between the two is replaced, which can significantly reduce the overall size of the connecting part; this form of breast ductoscope does not need to be fixed on the telescopic rod during use, which greatly shortens the length of the fiber scope part, especially the size of the image fiber in the fiber scope part, which on the one hand reduces the risk of damaging the image fiber during operation and reduces the use cost, and on the other hand, the shorter fiber scope part ensures better image transmission effect;

[0051] 2. Due to the setting of the plug-in structure and the fixing device, the buckle connection is omitted, which can make the rear end of the image fiber in the fiber scope part closer to the ocular adapter lens, thereby reducing the loss of optical signals in the transmission process and improving the clarity and contrast of the image;

[0052] 3. The traditional breast ductoscope is to connect the fiber scope and the ocular adapter lens, then fix the ocular lens on the telescopic rod of the trolley, and then install the length shifter, handle tee and sheath on the other end of the fiber scope for use, so that there is a certain distance between the equipment trolley and the patient, and the fragile image fiber is used to transmit the image between them, which is easy to damage the image fiber for some inexperienced users. The fiber scope and camera connecting structure of the present application innovatively integrates the camera imaging assembly in the handle, discards the traditional operation mode of sequentially connecting the fiber scope, ocular adapter, optical bayonet and CMOS camera, simplifies the connection mode between the ocular adapter, optical bayonet and CMOS camera and integrates them in the handle, and connects the rear end of the image fiber seat fixing cover in the fiber scope part and the front end of the outer cylinder through the plug-in structure during use. This quick connection mode not only facilitates installation and removal, but also ensures good alignment accuracy and facilitates users to quickly replace different fiber scopes according to needs. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1Internal structure diagram of the fiber scope and camera connecting structure of the present application.

[0054] Figure 2 Exploded view of the fiber scope and camera connecting structure of the present application.

[0055] Figure 3 Internal structure diagram of the image fiber seat base in the fiber scope and camera connecting structure of the present application.

[0056] Figure 4 Stereoscopic structure diagram of the image fiber seat base in the fiber scope and camera connecting structure of the present application.

[0057] Figure 5 Structure schematic diagram of the image fiber seat in the fiber scope and camera connecting structure of the present application.

[0058] Figure 6 Structure schematic diagram of the image fiber seat fixing cover in the fiber scope and camera connecting structure of the present application.

[0059] Figure 7 Connection state diagram of the image fiber seat base and the image fiber seat fixing cover in the fiber scope and camera connecting structure of the present application.

[0060] Figure 8 Structure schematic diagram of the outer cylinder in the fiber scope and camera connecting structure of the present application (viewing angle 1).

[0061] Figure 9 Structure schematic diagram of the outer cylinder in the fiber scope and camera connecting structure of the present application (viewing angle 2).

[0062] Figure 10 Structure schematic diagram of the outer cylinder in the fiber scope and camera connecting structure of the present application (viewing angle 3).

[0063] Figure 11 Structure schematic diagram of the focusing dial in the fiber scope and camera connecting structure of the present application.

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

[0065] The application will be further described below in conjunction with the drawings.

[0066] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0067] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0068] Embodiment 1

[0069] A fiber scope and camera connection structure, comprising a camera part and a fiber scope part, the camera part comprising an outer barrel 10, an eyepiece adapter 11 and a handle shell 13, the rear end of the outer barrel 10 is located in the handle shell 13, the front end is exposed from the front end of the handle shell 13, and the front end of the outer barrel 10 is connected with the eyepiece adapter 11; the fiber scope part comprises an image fiber 1, an image fiber seat base 3 and a connecting piece, the connecting piece 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 connecting piece, and the front end passes out from the front end of the image fiber seat base 3; the rear end of the connecting piece and the front end of the outer barrel 10 are matched through a plug-in structure, and the fiber scope part and the camera part are connected and fixed through a fixing device, when the fiber scope part and the camera part are connected, the rear end of the image fiber 1 is close to the eyepiece adapter 11.

[0070] The image fiber seat fixing cover in the fiber scope part and the outer barrel 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 fiber scope part, that is, instead of the traditional buckle connection between the two, the overall size of the connection part can be significantly reduced, the camera device integrated in the handle shell is matched, the volume of the whole fiber ductoscope is more compact, it is more suitable for operation in a narrow space, and the flexibility and convenience of use are improved; the ductoscope in this form does not need to be fixed on a telescopic rod during use, greatly shortening the length of the fiber scope part, especially the size of the image fiber in the fiber scope part, on the one hand, reducing the risk of damaging the image fiber during operation and reducing the use cost, on the other hand, the shorter fiber scope part ensures better image transmission effect.

[0071] The plug-in structure comprises a plug-in part and a matching part. The plug-in part can be arranged on the rear end face of the image fiber seat fixing cover 6 or the front end face of the outer barrel 10. When the plug-in part is arranged on the rear end face of the image fiber seat fixing cover 6, the matching part is arranged on the front end face of the outer barrel 10. When the plug-in part is arranged on the front end face of the outer barrel 10, the matching part is arranged on the rear end face of the image fiber seat fixing cover 6.

[0072] When the fiber scope part and the camera part are connected, the plug-in part is inserted into the matching part, and the rear end face of the image fiber seat fixing cover 6 and the front end face of the outer barrel 10 are attached. The matching design of the plug-in part and the matching part can ensure that the rear end face of the image fiber seat fixing cover 6 and the front end face of the outer barrel 10 are completely attached, thereby realizing 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 process of optical signal transmission and improve the clarity and resolution of the image.

[0073] It is worth noting that the rear end of the image fiber 1 and the central axis of the eyepiece adapter 11 are on the same straight line. In order to achieve this purpose, it is necessary to make the central hole axis of the image fiber seat 5 coincide with the central axis of the eyepiece adapter 11.

[0074] In the present application, the plug-in part can be one of various plug-in forms, such as any one of a pin, a buckle, a mortise and a boss. Correspondingly, the matching part is any one of a pin hole, a clamping groove, a mortise hole and a bayonet. By inserting the pin into the pin hole, the buckle into the clamping groove, the mortise into the mortise hole, and the boss into the bayonet, the connection of the scope fixing cover 6 and the outer cylinder 10 can be achieved.

[0075] It is worth noting that only one plug-in part and one matching part are provided, and the fiber scope part and the camera part are positioned by one positioning.

[0076] In the present application, the fixing device includes a fastening hand wheel 7. The fastening hand wheel 7 is a hollow structure, the rear end of the inner circle is provided with a threaded part, and the front end is provided with an annular protruding part 701 protruding inward. The front end of the outer periphery of the scope fixing base 3 has an annular stepped structure, and the front end of the outer periphery of the outer cylinder 10 is provided with a front end thread. The fastening hand wheel 7 is sleeved on the scope fixing base 3, the inner wall of the front end annular protruding part 701 abuts against the annular stepped structure on the scope fixing base 3, and the threaded part at the rear end is connected with the front end thread of the outer periphery of the outer cylinder 10.

[0077] The hollow inside of the fastening hand wheel 7, the threaded part at the rear end of the inner circle and the annular protruding part at the front end of the inner circle not only facilitate the operator to manually tighten or loosen, but also effectively prevent loosening caused by long-term use. In addition, it can also tightly fix the scope fixing base 3 on the outer cylinder 10, further enhancing the stability of the whole system.

[0078] Further, the fixing device further includes a locking nut 8, which is sleeved on and connected with the outer wall of the scope fixing base 3, and the rear end face of the locking nut 8 abuts against the front end face of the fastening hand wheel 7.

[0079] The locking nut 8 abuts against the front end face of the fastening hand wheel 7, forming a double locking mechanism. This design not only enhances the fixing effect of the fastening hand wheel 7, but also effectively prevents the fastening 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 quick and firm connection through internal positioning first and external locking later. Specifically, the present application sets the plug-in structure to enable the camera part and the fiber scope part to be quickly aligned, and after alignment, the camera part and the fiber scope part are connected and fixed by the fixing device. The plug-in structure provided by the present application reduces the difficulty of alignment. Through the form of connection and fixation by one fixing device, the fixing device can be quickly installed and disassembled every time it is used, and the fixing device adopts the form of outer peripheral thread to ensure the stability of the structure after connection and fixation.

[0081] In one embodiment, the connecting piece is a split structure, and the connecting piece comprises 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. The front end of the image fiber seat 5 is connected in 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 in the rear end of the image fiber seat base 3, which ensures the tightness and reliability of the connection and avoids loosening or falling off during use.

[0082] 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 with the image fiber seat base 3. The image fiber seat fixing cover 6 not only fixes the image fiber seat 5, but also protects the rear end of the image fiber seat 5, prevents external contaminants from entering, keeps the internal components clean and dry, and prolongs the service life of the equipment.

[0083] The image fiber seat 5 and the image fiber seat fixing cover 6 adopt a modular design, so that the image fiber seat 5 and the image fiber seat fixing cover 6 can be independently disassembled and replaced. If a part fails, it can be replaced individually without replacing the entire connecting piece, reducing maintenance costs.

[0084] Further, the rear end opening of the image fiber seat base 3 is provided with an inwardly recessed annular platform 305, and the front end of the image fiber seat 5 is connected to the annular platform 305. The outer periphery of the rear end of the image fiber seat 5 is provided with a protrusion 501, and the inner hole wall of the image fiber seat fixing cover 6 is provided with a first recess 603. 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 protrusion 501 is located in the first recess 603.

[0085] The annular platform 305 provides stable support, ensuring the stable position of the front end of the image fiber seat 5 in the image fiber seat base 3, preventing displacement or loosening during use.

[0086] The cooperation of the protrusion 501 and the first recess 603 plays a guiding role, which can quickly realize the connection of the image fiber seat 5 and the image fiber seat fixing cover 6, ensure the accurate alignment of the image fiber seat 5 in the image fiber seat base 3 and the image fiber seat fixing cover 6, reduce the installation error, improve the use precision of the equipment, and on the one hand ensure the fixation of the rear end of the image fiber seat 5 in the image fiber seat fixing cover 6, and further enhance the stability of the structure.

[0087] The insertion part or the matching part is arranged at the rear end face of the image fiber seat fixing cover 6. When the fiber scope part and the camera part are connected, the rear end face of the image fiber seat fixing cover 6 and the front end face of the outer cylinder 10 are attached. Further, the insertion part is a boss, and the matching part is a bayonet.

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

[0089] In the present application, the fiber scope part further comprises a main mirror tube 2 connected at the front end inside the image fiber seat base 3 and partially exposed, the axis of the part of the main mirror tube 2 inside the image fiber seat base 3 coincides with the central hole axis of the image fiber seat 5, the front end of the image fiber 1 is connected inside the main mirror tube 2 and is installed with a self-focusing imaging objective 101, and the front end of the illumination optical fiber 4 is located inside the main mirror tube 2 and wrapped around the outer periphery of the image fiber 1.

[0090] With this design, the axis of the part of the main mirror tube 2 inside the image fiber seat base 3, the central hole axis of the image fiber seat 5 and the central axis of the eyepiece adapter lens 11 are on the same straight line, which ensures the image transmission effect of the image fiber. The front end of the illumination optical fiber 4 is located inside the main mirror tube 2 and wrapped around the outer periphery of the image fiber 1, which ensures that the illumination light can uniformly irradiate the target area and improves the imaging quality. The self-focusing imaging objective 101 is a prior art, which will not be described in detail in the present application, and it can naturally guide the parallel light entering the objective to the focal point.

[0091] In summary, the fiber scope part of the present application comprises a fastening hand wheel 7, a locking nut 8, an illumination optical fiber 4 for illumination, an image fiber 1 for obtaining images, an image fiber seat base 3, and a main mirror tube 2, an image fiber seat 5 and an image fiber seat fixing cover 6 installed on the image fiber seat base 3, which can be detached and replaced.

[0092] Further, the rear end outer wall of the image fiber seat base 3 is provided with a notch, the image fiber seat fixing cover 6 and the inner part of the outer cylinder 10 are each provided with a through hole, the rear end of the illumination optical fiber 4 passes through the main mirror tube 2 and passes out of the notch on the rear end outer wall of the image fiber seat base 3 and then passes into the through hole of the image fiber seat fixing cover 6, and the through hole in the outer cylinder 10 is arranged along the length direction thereof for installing an illumination light source, and when the fiber scope part and the camera head 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 4 of the present application passes through the main mirror tube 2 and passes into the through hole of the image fiber seat fixing cover 6 from the notch on the rear end outer wall of the image fiber seat base 3. This path design ensures smooth transmission of the illumination optical fiber 4 and reduces light source loss. When the fiber scope part and the camera head part are connected, the axes of the through holes in the image fiber seat fixing cover 6 and the inner part of the outer cylinder 10 coincide, which ensures that the light path of the illumination light source can be smoothly transmitted to the front end of the illumination optical fiber 4. This design not only improves the transmission efficiency of the light path, but also simplifies the connection process.

[0094] It is worth mentioning that the through hole in the fixed cover 6 and the through hole in the outer cylinder 10 are arranged on the plug-in structure. By arranging the two through holes on the plug-in structure, on the one hand, the axes of the two through holes can be perfectly coincided when connected, and 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 4, thereby improving the transmission efficiency of the light path and the imaging quality.

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

[0096] In use, the user rotates the focusing dial 9 manually to realize the focusing function. The inner wall of the focusing dial 9 is provided with a second groove 901, which is in contact with the top end of the adjusting rod. When the focusing dial 9 rotates, the adjusting rod will rotate with the focusing dial 9 due to the existence of the second groove 901. Because the slot 1004 is arranged inclined to the axial direction of the outer cylinder 10, when the focusing dial 9 rotates, the adjusting rod will not only rotate with the focusing dial 9, but also move along the direction of the slot 1004. The bottom end of the adjusting rod is connected with the eyepiece adapter 11. With the movement of the adjusting rod in the slot 1004, the eyepiece adapter 11 will move along the axial direction of the outer cylinder 10, i.e. approach or move away from the rear end of the image fiber 1, so as to change the focal point position and achieve the purpose of focusing.

[0097] The present application utilizes the cooperation of the focusing dial 9, the adjusting rod and the slot in the cylinder wall of the outer cylinder 10, so that the design of the whole focusing mechanism is more compact, saves space and is conducive to the development of small-sized products.

[0098] In some further embodiments, the adjusting rod is a screw. The slotted groove and the outer barrel are inclined at an angle of 45° in the axial direction. By designing the slotted groove at an angle of 45°, the adjusting rod can move a greater distance in the axial direction of the outer barrel 10 under the same rotation angle. This allows the product to achieve a greater focusing range under a smaller rotation angle change. The 45° angle design helps to optimize the force transmission efficiency. When the user rotates the focusing dial 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 slotted groove design can enhance the stability of the structure. During the focusing process, the adjusting rod is not only subjected to a force perpendicular to the axial direction, but also a force along the direction of the slotted groove. The combination of these forces can better maintain the stability of the adjusting rod and the eyepiece adapter lens 11, reducing shaking and deviation.

[0099] Further, the camera part further comprises a focusing dial fixing cover 14, which is sleeved on the outer wall of the outer barrel 10 and fixedly connected thereto. The focusing dial 9 is located between the front ends of the focusing dial fixing cover 14 and the handle shell 13.

[0100] Embodiment 2

[0101] The present embodiment provides a fiber scope and camera connection structure. The present embodiment explains and expands on embodiment 1. As shown in Figure 1 and Figure 2 , the fiber scope part and the camera part are included. The fiber scope part includes an image fiber 1, a main mirror tube 2, an image fiber seat base 3, an illumination optical fiber 4, an image fiber seat 5, an image fiber seat fixing cover 6, a tightening hand wheel 7, and a locking nut 8. The front end of the image fiber 1 is provided with a self-focusing imaging objective lens 101.

[0102] The camera part includes a focusing dial 9, an outer barrel 10, an eyepiece adapter lens 11, a camera device 12, a handle shell 13, a focusing dial fixing cover 14, and a handle tail cover 15. The camera device 12 is located in the handle shell 13 and connected to the rear end of the outer barrel 10. The camera device 12 includes a CMOS fixing seat 1201, a filter 1202, a lens light-shielding pad 1203, and a CMOS imaging system 1204 arranged in sequence.

[0103] As a specific design scheme:

[0104] As shown in Figure 3 and Figure 4As shown, the 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 increasing outer diameters in sequence, the front section 301 and the middle section 302 are connected through a small hole 304, and the end of the rear section 303 is provided with an inner ring platform 305; the front end of the fiber seat 5 is close to the ring platform 305 on the fiber seat base 3, and the rear end is partially exposed, the fiber seat fixing cover 6 covers the exposed part of the fiber seat 5, and the front end face of the fiber seat fixing cover 6 and the end face of the rear section 303 of the fiber seat base 3 are in contact and connected by screws (as Figure 7 shown).

[0105] The rear end of the main mirror tube 2 penetrates into the small hole 304 in the fiber seat base 3; the outer wall of the rear section 303 of the fiber seat base 3 is provided with a first notch 3031, and the cover body of the fiber seat fixing cover 6 is provided with a first through hole 602 (as Figure 6 shown), the front end of the illumination fiber filament 4 penetrates out of the first through hole 602 on the fiber seat fixing cover 6, and then penetrates into the main mirror tube 2 from the first notch 3031 and surrounds the outer periphery of the image fiber 1, and the front end of the image fiber 1 is connected with a self-focusing imaging objective 101. The outer wall of the main mirror tube 2 is further sleeved with a main mirror support tube inner tube 201 and a main mirror support tube outer tube 202 (as Figure 2 shown), and the front ends of the two are flush with the front end of the fiber seat base 3. The front ends of the main mirror support tube inner tube 201 and the main mirror support tube outer tube 202 are flush with the front end of the fiber seat base 3, which ensures the alignment and coordination between the components. Through the multi-layer tube support structure, the stress on the main mirror tube during use can be effectively dispersed, the local excessive stress can be reduced, and the service life of the main mirror tube and its related components can be prolonged.

[0106] As shown in Figure 5 , the outer wall of the fiber seat 5 is provided with a convex rib 501, and the inner wall of the fiber seat fixing cover 6 is provided with a first groove 603 (as Figure 6 shown), the shapes of the convex rib 501 and the first groove 603 correspond, the fiber seat fixing cover 6 covers the exposed part of the fiber seat 5, and the position of the fiber seat 5 is fixed by placing the convex rib 501 in the first groove 603.

[0107] As shown in Figure 8 , Figure 9 and Figure 10As shown, the outer cylinder 10 includes an outer cylinder body 1001, a connecting part 1002 and an inner cylinder body 1003, and the connecting part 1002 is connected to the rear end face 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 outer periphery of the front end 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 grooves 1004, and the inner cylinder body 1003 is provided with a center hole 1005, and the front end of the ocular adapter lens 11 is horizontally inserted into the outer cylinder body 1001 from one end of the connecting part 1002 of the outer cylinder 10 and the front end thereof passes through the center hole 1005, and the outer wall of the ocular adapter lens 11 can be connected to the adjusting rod through the through grooves 1004; the inner wall of the focusing dial 9 is provided with a second groove 901 (as shown in Figure 11 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 ocular adapter lens 11 is located in the second groove 901, and when the focusing dial 9 rotates, the adjusting rod can move in the second groove 901, so that the ocular adapter lens 11 can move forward and backward to adjust the focal length.

[0108] The rear end of the outer cylinder 10 is connected to the camera device 12 through the connecting part 1002, the front end penetrates into the rear end of the handle shell 13, and the outer cylinder body 1001 is exposed from the front end of the handle shell 13, and the outer cylinder 10 is fixedly connected to the front end of the handle shell 13 through the connecting part 1002.

[0109] The inner cylinder body 1003 of the outer cylinder 10 is provided with a horizontal second through hole 1007, and the outer wall of the connecting part 1002 is provided with a second notch 1008, and 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] As shown in Figure 1 and 2 The focusing dial fixing cover 14 is sleeved on the outer wall of the outer cylinder 10 and is fixedly connected thereto, the focusing dial 9 is located between the focusing dial fixing cover 14 and the front end of the handle shell 13, and the position of the focusing dial 9 is fixed by the focusing 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 shell 13; preferably, the open end is connected to the rear end of the handle shell 13 through threads.

[0111] As shown in Figure 1 and Figure 2As shown, the camera device 12 includes a CMOS fixing seat 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 fixing seat 1201, and the filter 1202 and the lens shading pad 1203 are located therebetween. The CMOS fixing seat 1201 is provided with a protruding cylindrical structure 12011 at the front end. The cylindrical structure 12011 is inserted into the connecting portion 1002 of the outer cylinder 10, and then fixed and connected through a connecting device to realize the connection of the outer cylinder 10 and the camera device 12. Preferably, the connecting device is a screw. The outer wall of the CMOS fixing seat 1201 is provided with a third notch 12012 for the passage of wires. The front end of the wire is connected to the illumination light source for power supply.

[0112] The rear end of the image fiber seat fixing cover 6 is provided with a boss 601 (as shown in Figure 6 The inner cylinder body 1003 of the outer cylinder 10 is provided with a bayonet 1006 corresponding in shape to the boss 601 (as shown in Figure 8 The fiber scope and the camera part are positioned and connected by inserting the boss 601 into the bayonet 1006, and are fixed by the tightening hand wheel 7 and the locking nut 8. The specific structure is as described in Embodiment 1.

[0113] It is worth noting that the outer peripheral dimension of the connecting portion 1002 is larger than the outer peripheral dimension of the outer cylinder body 1001. The outer cylinder body 1001 is sleeved on the front end of the outer periphery of the inner cylinder body 1003. The connecting portion 1002 is located in the handle housing 13 and is connected to the front end of the handle housing 13 by a screw. The inner cylinder body 1003 is exposed from the front end of the handle housing 13. The inner diameter of the outer cylinder body 1001 and the outer diameter of the image fiber seat fixing cover 6 are matched. When the fiber scope and the camera part are connected, the outer ring of the image fiber seat fixing cover 6 is connected to the inner ring of the outer cylinder body 1001, and the rear end face of the image fiber seat fixing cover 6 is attached to the front end face of the inner cylinder body 1003.

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

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

[0116] The rear end surface of the fiber seat fixing cover 6 is attached to the front end surface of the inner cylinder body 1003: this attachment design not only ensures the close contact between the two components, but also reduces the gap in the middle, improving the stability and sealing of the optical system.

[0117] The inner diameter of the outer cylinder body 1001 is matched with the outer diameter of the fiber seat fixing cover 6, and this size matching design ensures that the fiber seat fixing cover 6 can be accurately inserted into the outer cylinder body 1001, avoiding misalignment caused by size mismatch, and improving the assembly precision.

[0118] Further, the inner diameter of the outer cylinder body 1001 is matched with the outer diameter of the fiber seat fixing cover 6, which can be 0.1mm-0.5mm larger than the outer diameter of the fiber seat fixing cover 6. During use, the fiber scope part and the camera handle part are aligned and connected to the bayonet, and the handle tee and the sheath joint are assembled, and the focusing dial on the camera handle is adjusted to clear imaging.

[0119] Example 3

[0120] Based on the fiber scope and camera connection structure provided in examples 1 and 2, this embodiment provides a fiber scope and camera connection method, including fiber scope part assembly, camera part assembly and combination of fiber scope part and camera part.

[0121] Fiber scope part assembly process:

[0122] Install the self-focusing imaging objective 101 at the front end of the image fiber 1, and connect the illumination optical fiber 4 to the outer periphery of the front end of the image fiber 1; pass the rear end of the image fiber 1 through the center hole of the image fiber seat 5, and make the rear end of the image fiber 1 protrude from the center hole of the image fiber seat 5 by 0.05-0.15mm.

[0123] Pass the self-focusing imaging objective 101 through the image fiber seat base 3, and extend from the front end of the image fiber seat base 3, install the front end of the image fiber seat 5 into the rear end of the image fiber seat base 3, and expose the rear end of the image fiber seat 5, cover the exposed part of the image fiber seat 5 with the image fiber seat fixing cover 6, and connect the image fiber seat fixing cover 6 with the image fiber seat base 3.

[0124] Camera part assembly process:

[0125] Connect the camera device 12 to the rear end of the outer cylinder 10, connect the eyepiece adapter lens 11 to the front end of the outer cylinder 10, connect the outer cylinder 10 and the handle shell 13, and make the rear end of the outer cylinder 10 located in the handle shell 13, and the front end of the outer cylinder 10 exposed from the front end of the handle shell 13.

[0126] Combination of fiber scope part and camera part.

[0127] The rear end of the image fiber seat fixing cover 6 and the front end of the outer cylinder 10 are connected through the plug-in structure, and the fiber mirror part and the camera part are connected and fixed through the fixing device; when the fiber mirror part and the camera part are connected, the rear end of the image fiber 1 is close to the ocular adapter lens 11.

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

[0129] The boss 601 on the rear end face of the image fiber seat fixing cover 6 is inserted into the bayonet 1006 on the front end face of the outer cylinder 10.

[0130] The hollow structure of the fastening hand wheel 7 is sleeved on the image fiber seat base 3, the inner wall of the annular protruding part 701 at the front end in the fastening hand wheel 7 abuts against the annular step structure on the image fiber seat base 3, and the threaded part at the rear end in the fastening hand wheel 7 is screwed with the threaded connection on the front end of the outer periphery of the outer cylinder 10. Specifically, the assembly process and principle of the fiber mirror and camera connection structure are as follows:

[0131] I. Fiber mirror part process:

[0132] 1. After cutting the image fiber 1, polish both ends, install the self-focusing imaging objective 101 on the end face of the image fiber 1 and solidify, cut, polish and clean the main mirror tube, count a plurality of illumination optical fibers, prepare the glue, then perform the tube insertion process of the objective assembly (the illumination optical fiber is inserted into the main mirror tube 2 and closely adheres to the inner wall of the main mirror tube 2, the self-focusing imaging objective 101 with the image fiber 1 is inserted into the main mirror tube 2 and wrapped by the illumination optical fiber), after waiting for the glue to solidify, polish the objective, and after polishing, check the imaging.

[0133] 2. Clean the image fiber seat 5, apply glue to the other end of the image fiber 1 and insert it into the center hole of the image fiber seat 5, make the image fiber end face protrude from the center hole of the image fiber seat by 0.1mm, then install the image fiber protection sheet and glue it (the outer periphery of the image fiber protection sheet is pasted in the connecting hole at the rear end of the image fiber seat 5 by glue, and the image fiber protection sheet is used to protect the image fiber 1 protruding from the image fiber seat).

[0134] 3. Insert the front end of the assembled component (on the side of the self-focusing imaging objective lens 101) into the small hole 304 (the small hole 304 is a round hole) from the rear end of the fiber optic mount 3. Then, place the front end of the fiber optic mount 5 on the annular platform 305 of the fiber optic mount 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 fiber optic mount 5). Clean the first through hole 602 (the first through hole 602 is a round hole) on the fiber optic mount fixing cover 6. Insert the illumination fiber optic cable into the first through hole 602. Finally, align the first groove 603 on the fiber optic mount fixing cover 6 with the protrusion 501 on the fiber optic mount. Tighten the two fastening screws on the left and right to fix the fiber optic mount fixing cover 6 to the fiber optic mount 3 (the fiber optic mount fixing cover 6 has symmetrical through holes on the left and right, and the fiber optic mount 3 has symmetrical screw holes on the left and right; the fastening screws pass through the through holes of the fiber optic mount fixing cover 6 and are inserted into the screw holes of the fiber optic mount 3).

[0135] 4. Prepare the glue, and put the outer tube 202 and the inner tube 201 of the primary lens support tube onto the primary lens tube 2 in sequence and glue them together to cure, so that the front end face of the outer tube 202 and the inner tube 201 of the primary lens support tube are on the same plane as the front end face of the fiber mount base 3.

[0136] 5. Insert the fastening handwheel 7 onto the front end of the fiber optic base 3, and then screw the front locking nut 8 into the thread at the front end of the fiber optic base 3 so that the fastening handwheel 7 can be freely turned on the fiber optic base.

[0137] II. Manufacturing process of the camera handle:

[0138] 1. Install the CMOS imaging system 1204 on the CMOS mount 1201, adjust the focal plane and viewing axis angles, and then fix it.

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

[0140] 3. Connect and secure the assembled outer cylinder 10 to the CMOS mounting base 1201 with screws (the CMOS mounting base 1201 is connected to the connecting part 1002 of the outer cylinder 10). Then insert the entire assembly from the rear end of the handle housing 13, align the three openings at the front end of the handle housing 13 with the three threaded holes on the connecting part 1002 of the outer cylinder 10, and tighten the screws to secure it.

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

[0142] 5. Connect the FPC cable of the CMOS imaging system 1204 to 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] Fiber and image fiber separation design: The front ends of both the illumination fiber 4 and the image fiber 1 are encased inside the main lens tube 2. After the tail ends extend from the main lens tube 2, the illumination fiber 4 converges into a single strand and extends out from the slot (first notch 3031) at the tail of the image fiber base 3. The image fiber 1 is inserted into the central hole of the image fiber base 5 along the center line of the image fiber base 3. The illumination fiber 4 extending from the side is passed through the first through hole 602 of φ1.2mm on the image fiber base fixing cover 6. Then, the illumination fiber 4 is passed through a stainless steel tube. After applying glue to the inside and outside of the stainless steel tube, the tube is pushed into the first through hole 602 on the image fiber base fixing cover 6. After the glue cures, the end face of the illumination fiber 4 is ground and polished.

[0144] III. Focusing Principle

[0145] Adjusting the front and back position of the eyepiece inside the outer tube can adjust the clarity of the image, while adjusting the front and back position of the adapter lens inside the outer tube can adjust the size of the image on the display screen.

[0146] IV. Eyepiece focusing method and the function of the adapter lens

[0147] The eyepiece is installed inside the outer tube. The eyepiece tube has an M2 threaded hole, and the outer tube sidewall has a 45° axial groove. Insert the eyepiece into the outer tube, align the threaded hole on the eyepiece tube with the groove on the outer tube sidewall, and screw an M2 screw through the groove into the threaded hole on the eyepiece tube. The eyepiece will then move back and forth along the groove on the outer tube sidewall, adjusting the image sharpness.

[0148] The adapter lens adjusts the size of the image on the CMOS sensor module, which is directly reflected in the change in the size of the image on the display screen.

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

[0150] Put the filter and lens shading pad into the CMOS fixing seat in turn, then put the CMOS imaging system on the CMOS fixing seat, screw in two M2 screws, adjust the front and rear and left and right positions of the CMOS imaging system mounting plate on the CMOS fixing seat, ensure that the visual axis and the center line of the CMOS fixing seat coincide, then tighten the two M2 screws to fix the mounting plate; then adjust the three screws at the back of the mounting plate to adjust the parallelism of the CMOS photosensitive surface and the standard image surface, ensure that there is no distortion around the imaging picture, then drop UV glue on the three screws and solidify to prevent the screws from loosening and affecting the parallelism of the photosensitive surface.

[0151] Six, the trend of the light path, light cone effect, light path limiting design

[0152] Imaging light path: the external picture passes through the refraction of the self-focusing imaging objective lens to converge on the front end face of the image fiber, uses the principle of image fiber light transmission to transmit the picture to the rear end face of the image fiber, and then transmits the light to the photosensitive device of the CMOS through the refraction of the eyepiece and the adapter lens. Finally, it is converted by the signal output.

[0153] Illumination light path: the fiber mirror part is covered with illumination optical fiber during production, together with the self-focusing imaging objective lens and the image fiber around the image fiber, and is inserted into the main mirror tube. The ends of the optical fiber are gathered together and bonded and solidified on the image fiber seat fixing cover by glue. The illumination optical fiber of the camera handle part extends from the front end face of the outer cylinder to the tail of the outer cylinder through the hole on the side wall of the outer cylinder, and then extends through the reserved space on the CMOS fixing seat to the tail of the handle. Finally, it is stretched out from the handle tail sleeve and connected to the cold light source main machine to provide illumination light source for the fiber mirror.

[0154] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiberscope and camera connection structure, characterized by, The application relates to a camera and fiber scope combination device. The camera part comprises an outer cylinder (10), an eyepiece adapter (11) and a handle shell (13), the rear end of the outer cylinder (10) is located in the handle shell (13), the front end of the outer cylinder (10) is exposed from the front end of the handle shell (13), and the front end of the outer cylinder (10) is connected with the eyepiece adapter (11); The fiber scope part comprises an image fiber (1), an image fiber seat base (3) and a connecting piece, the rear end of the connecting piece is connected with 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 connecting piece, and the front end of the image fiber (1) is exposed from the front end of the image fiber seat base (3); The rear end of the connecting piece is matched with the front end of the outer cylinder (10) through a plug-in structure, and the fiber scope part and the camera part are connected and fixed through a fixing device, when the fiber scope part and the camera part are connected, the rear end of the image fiber (1) is close to the eyepiece adapter (11); The connecting piece comprises an image fiber seat (5) and an image fiber seat fixing cover (6); The image fiber seat (5) has a front end part and a rear end part, the front end part of the image fiber seat (5) is connected in the rear end of the image fiber seat base (3), and the rear end part is exposed from the image fiber seat base (3); The image fiber seat fixing cover (6) covers the rear end part of the image fiber seat (5), and the image fiber seat fixing cover (6) is connected with the image fiber seat base (3); The rear end opening of the image fiber seat base (3) is provided with an inward annular platform (305), and the front end part of the image fiber seat (5) is connected in the annular platform (305); The outer periphery of the rear end part of the image fiber seat (5) is provided with a convex rib (501), the inner hole wall of the image fiber seat fixing cover (6) is provided with a first groove (603), 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 rib (501) is located in the first groove (603).

2. The structure according to claim 1, wherein The plug-in structure comprises a plug-in part and a matching part; The plug-in part is arranged on the rear end face of the image fiber seat fixing cover (6) or the front end face of the outer cylinder (10), and the matching part is arranged on the front end face of the outer cylinder (10) or the rear end face of the image fiber seat fixing cover (6); When the fiber scope part and the camera part are connected, the plug-in part is inserted into the matching part, and the rear end face of the image fiber seat fixing cover (6) and the front end face of the outer cylinder (10) are attached.

3. The structure according to claim 1, wherein The fixing device comprises a fastening hand wheel (7); The fastening hand wheel (7) is a hollow structure, the rear end of the inner circle of the fastening hand wheel (7) is provided with a threaded part, the front end of the inner circle of the fastening hand wheel (7) is provided with an annular convex part (701) protruding inward, the front end of the outer periphery of the image fiber seat base (3) has an annular step structure, the front end of the outer periphery of the outer cylinder (10) is provided with a front end thread, the fastening hand wheel (7) is sleeved on the image fiber seat base (3), the inner wall of the front end annular convex part (701) abuts against the annular step structure on the image fiber seat base (3), and the threaded part of the rear end is connected with the front end thread of the outer periphery of the outer cylinder (10); The fixing device further comprises a locking nut (8), the locking nut (8) is sleeved on the outer wall of the image fiber seat base (3) and connected with the outer wall, and the rear end face of the locking nut (8) abuts against the front end face of the fastening hand wheel (7).

4. The structure according to claim 1, wherein The fiber scope part further comprises a main mirror tube (2) and an illumination optical fiber (4), the front end of the main mirror tube (2) is connected in the inside of the image fiber seat base (3) and partially exposed. The rear end of the image fiber (1) is connected in the image fiber seat (5) and exposed at the rear end of the image fiber seat (5); the rear end of the illumination fiber filament (4) is connected in the image fiber seat fixing cover (6) and flush with the rear end surface of the image fiber seat fixing cover (6); the front end of the image fiber (1) and the front end of the illumination fiber filament (4) are both located in the front end of the main mirror tube (2); The front end of the image fiber (1) is provided with a self-focusing imaging objective (101); the outer wall of the main mirror tube (2) is further sequentially sleeved with a main mirror support tube inner tube (201) and a main mirror support tube outer tube (202), and the front end of the main mirror support tube inner tube (201) and the front end of the main mirror support tube outer tube (202) are both flush with the front end of the image fiber seat base (3).

5. The structure according to claim 1, wherein The outer cylinder (10) comprises an outer cylinder body (1001), a connecting part (1002) and an inner cylinder body (1003), the connecting part (1002) is connected to the rear end surface of the inner cylinder body (1003), and the outer peripheral dimension of the connecting part (1002) is greater than the outer peripheral dimension of the inner cylinder body (1003); The connecting part (1002) is located in the handle shell (13) and is fixedly connected to the front end of the handle shell (13); the inner cylinder body (1003) is exposed from the front end of the handle shell (13); The outer cylinder body (1001) is sleeved at the front end of the outer periphery of the inner cylinder body (1003), the inner diameter of the outer cylinder body (1001) is matched with the outer diameter of the image fiber seat fixing cover (6); the outer walls of the outer cylinder body (1001) and the inner cylinder body (1003) are provided with through grooves (1004); When the fiber scope part and the camera part are connected, the outer ring of the image fiber seat fixing cover (6) is connected with the inner ring of the outer cylinder body (1001), and the rear end surface of the image fiber seat fixing cover (6) is attached to the front end surface of the inner cylinder body (1003); The inner cylinder body (1003) is provided with a second through hole (1007), and the outer wall of the connecting part (1002) is provided with a second notch (1008), the second notch (1008) is communicated with the second through hole (1007); The second through hole (1007) is coaxially arranged with the illumination fiber filament (4) in the image fiber seat fixing cover (6).

6. The structure according to claim 4, wherein The image fiber seat base (3) is a three-section cylindrical structure, comprising a front section (301), a middle section (302) and a rear section (303) with increasing outer diameters in sequence, the front section (301) and the middle section (302) are communicated through a small hole (304), the end opening of the rear section (303) is provided with an inwardly recessed annular platform (305), and the front end of the image fiber seat (5) is tightly attached to the annular platform (305) on the image fiber seat base (3); The outer wall of the rear section (303) of the image fiber seat base (3) is provided with a first notch (3031), one end of the illumination fiber filament (4) is connected in the image fiber seat fixing cover (6), and the other end is connected to the main mirror tube (2) on the image fiber seat base (3) through the first notch (3031).

7. The structure according to claim 1, wherein The camera part further comprises a focusing dial (9), the eyepiece adapter lens (11) is connected in the outer cylinder (10) along the axial direction of the outer cylinder (10), and the cylinder wall of the outer cylinder (10) is provided with a groove (1004). The focusing dial (9) is sleeved on the outer wall of the outer cylinder (10), and the inner wall of the focusing dial (9) is provided with a second groove (901), and the outer wall of the eyepiece adapter lens (11) is connected with an adjusting rod; the top end of the adjusting rod passes through the slot (1004) and is located in the second groove (901); The direction of the slot (1004) is inclined to the axis direction of the outer cylinder (10), and when the focusing dial (9) rotates, the eyepiece adapter lens (11) can move along the axis of the outer cylinder (10) to approach or move away from the rear end of the image fiber (1); The camera part further comprises a focusing dial fixing cover (14), which is sleeved on the outer wall of the outer cylinder (10) and fixedly connected therewith, and the focusing dial (9) is located between the front ends of the focusing dial fixing cover (14) and the handle shell (13).

8. The structure according to claim 1, wherein The rear end of the outer cylinder (10) is connected with a camera device (12), and the camera device (12) is located in the handle shell (13); The camera device (12) comprises a CMOS fixing seat (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 fixing seat (1201), and the filter (1202) and the lens shading pad (1203) are located therebetween; the CMOS fixing seat (1201) is provided with a protruding cylindrical structure (12011) at the front end, the cylindrical structure (12011) is inserted into the rear end of the outer cylinder (10), and then fixedly connected through a connecting device, so that the outer cylinder (10) and the camera device (12) are connected.

9. The method of connecting the fiberscope to the camera in the fiberscope and camera connection structure according to claim 1, wherein, Comprise: A self-focusing imaging objective (101) is installed at the front end of the image fiber (1), and an illumination fiber is connected to the outer periphery of the front end of the image fiber (1); the rear end of the image fiber (1) passes through the center hole of the image fiber seat (5), and the rear end of the image fiber (1) protrudes from the center hole of the image fiber seat (5) by 0.05-0.15mm; The self-focusing imaging objective (101) passes through the image fiber seat base (3) and protrudes from the front end of the image fiber seat base (3), the front end of the image fiber seat (5) is installed into the rear end of the image fiber seat base (3), the rear end of the image fiber seat (5) is partially exposed, the image fiber seat fixing cover (6) covers the exposed part of the image fiber seat (5) and is connected with the image fiber seat base (3); The camera device (12) is connected to the rear end of the outer cylinder (10), the eyepiece adapter lens (11) is connected to the front end of the outer cylinder (10), the outer cylinder (10) and the handle shell (13) are connected, and the rear end of the outer cylinder (10) is located in the handle shell (13) and the front end of the outer cylinder (10) is exposed from the front end of the handle shell (13); The rear end of the image fiber seat fixing cover (6) and the front end of the outer cylinder (10) are connected through a plug-in structure, and the fiber mirror part and the camera part are fixedly connected through a fixing device; when the fiber mirror part and the camera part are connected, the rear end of the image fiber (1) approaches the eyepiece adapter lens (11).

10. A ductoscope comprising the structure of claim 1-8 connecting the fiberscope and the camera.

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