Endoscope camera and endoscope camera system

Abstract

An endoscope camera (50) and an endoscope camera system (1000), the endoscope camera (50) comprising a handle (1), a chip module (2), an optical module (3) and a hand wheel (4), the optical module (3) comprising a lens barrel (31), a fixed optical assembly (32), an adjustable optical assembly (33) and a crash terminal (34), the adjustable optical assembly (33) comprising an adjustable lens seat (331) and an adjustable lens group (332), the crash terminal (34) being installed at an end of the adjustable lens seat (331) away from the fixed optical assembly (32), and the crash terminal (34) protruding axially from an axial end surface of the adjustable lens group (332). Since the crash terminal (34) is installed at an end of the adjustable optical assembly (33) away from the fixed optical assembly (32), the optical lens located at the end of the adjustable lens seat (331) is accommodated in the crash terminal (34), and during installation of the adjustable optical assembly (33), the lens can be prevented from colliding directly with the chip module (2), the adjustable optical assembly (33) is protected, and the imaging quality is ensured.

Description

Technical Field

[0001] This application relates to in vivo diagnostic instruments, specifically to an endoscope camera and endoscope imaging system that are protected against lens impact. Background Technology

[0002] The most critical part of whether a camera can produce an image lies in its optical components, and the optical lens is the most easily damaged part of the optical components. Optical lenses are usually made of ground glass, which is fragile and not impact-resistant. Protecting the optical lenses is one of the keys to the lifespan of a camera product.

[0003] The endoscopic camera includes a fixed optical component and an adjustable optical component. During installation, the adjustable optical component is first installed into the endoscope barrel, followed by the fixed optical component. In existing technology, to better distinguish the two ends of the adjustable optical component, the two ends of the adjustable lens mount are designed with one large and one small, serving as a foolproof mechanism. The adjustable lens assembly is fixed to the lens mount by adhesive at both ends. To allow space for adhesive application, an annular groove is provided at the large end of the adjustable lens mount. The optical lens of the adjustable lens assembly protrudes from the small end of the adjustable lens mount, allowing the circumferential surface of the optical lens to be glued to the small end face of the adjustable lens mount. Furthermore, the fixed and adjustable optical components need to be closely fitted and aligned; therefore, the small end of the adjustable lens mount is far from the fixed optical component. Because the adjustable optical component is placed directly into the endoscope barrel, it can slide. Therefore, the protruding optical lens of the adjustable optical component will collide with the chip module, potentially damaging the optical lens and affecting image quality. Invention Overview

[0005] Technical issues

[0006] Solution to the problem

[0007] Technical solutions

[0008] One embodiment provides an endoscope camera, comprising:

[0009] A handle having a receiving cavity, and openings at both ends of the handle communicating with the receiving cavity;

[0010] A chip module, wherein the chip module is installed in the receiving cavity of the handle;

[0011] An optical module includes a lens barrel, a fixed optical component, an adjustable optical component, and an anti-collision terminal. One end of the lens barrel is mounted on the opening of the handle and connected to the chip module. The fixed optical component is mounted on the end of the lens barrel away from the chip module. The adjustable optical component is axially movable and mounted inside the lens barrel. The adjustable optical component includes an adjustable lens mount and an adjustable lens group. The adjustable lens mount has a mounting hole, and the adjustable lens group is mounted in the mounting hole of the adjustable lens mount. The anti-collision terminal is mounted on the end of the adjustable lens mount away from the fixed optical component and axially protrudes from the axial end face of the adjustable lens group.

[0012] And a handwheel, which is rotatably mounted on the lens barrel and connected to the adjustable optical assembly via a connector.

[0013] In one embodiment, the end of the adjustable lens assembly away from the fixed optical component protrudes from or is flush with the end face of the adjustable lens mount.

[0014] In one embodiment, the anti-collision terminal is an elastic element.

[0015] In one embodiment, the anti-collision terminal is a sleeve.

[0016] In one embodiment, the anti-collision terminal has a retaining ring at the end away from the fixed optical component, and the inner diameter of the retaining ring is greater than or equal to the beam diameter of the emitted light from the adjustable lens group.

[0017] In one embodiment, the adjustable lens mount has an axial annular protrusion or annular groove at one end away from the fixed optical component, and one end of the anti-collision terminal is fitted onto the annular protrusion of the adjustable lens mount or snapped into the annular groove of the adjustable lens mount.

[0018] In one embodiment, the anti-collision terminal is threadedly connected to the adjustable lens mount.

[0019] In one embodiment, the anti-collision terminal and the adjustable lens holder are an integral structure.

[0020] In one embodiment, the anti-collision terminal includes a plurality of protrusions, which are uniformly mounted on the end face of the adjustable lens mount away from the fixed optical component.

[0021] In one embodiment, the adjustable lens group includes a first adjustable lens, a second adjustable lens, and a third adjustable lens. The first adjustable lens, the second adjustable lens, and the third adjustable lens are arranged sequentially away from the fixed optical component within the mounting hole of the adjustable lens holder. The end face of the first adjustable lens facing the fixed optical component is flush with the end face of the adjustable lens holder, and the end face of the third adjustable lens away from the fixed optical component protrudes from the end face of the adjustable lens holder.

[0022] In one embodiment, the optical mirror surface of the adjustable lens group facing the fixed optical component is flush with the end face of the adjustable lens mount. The optical mirror surface of the adjustable lens group facing the fixed optical component includes a concave surface in the middle and an annular plane surrounding the concave surface. An anti-collision layer is attached to the annular plane of the optical mirror surface and / or the end face of the adjustable lens mount facing the fixed optical component.

[0023] In one embodiment, an anti-collision layer is attached to the surface of the fixed optical component facing the first adjustable lens, and the anti-collision layer is located outside the area of ​​the optical path emitted by the fixed optical component.

[0024] In one embodiment, the anti-collision layer is a silicone layer.

[0025] In one embodiment, the silicone layer is a black silicone layer.

[0026] In one embodiment, an endoscope camera is provided, including a barrel, a fixed optical component, an adjustable optical component, and an anti-collision terminal. One end of the barrel is mounted on an opening of a handle and connected to a chip module. The fixed optical component is mounted on the end of the barrel away from the chip module. The adjustable optical component is axially movable within the barrel. The adjustable optical component includes an adjustable lens mount and an adjustable lens group. The adjustable lens mount has a mounting hole, and the adjustable lens group is mounted within the mounting hole of the adjustable lens mount. The anti-collision terminal is mounted on the end of the adjustable lens mount away from the fixed optical component and axially protrudes from the axial end face of the adjustable lens group.

[0027] In one embodiment, the device includes a lens barrel, an optical component, and an anti-collision terminal. One end of the lens barrel is mounted on the opening of the handle and connected to the chip module. The optical component is mounted inside the lens barrel. The optical component includes a lens mount and a lens assembly. The lens mount has a mounting hole, and the lens assembly is mounted in the mounting hole of the lens mount. The anti-collision terminal is mounted on the end of the lens mount facing the chip module, and the anti-collision terminal axially protrudes from the axial end face of the lens assembly.

[0028] In one embodiment, an endoscope camera is provided, including a barrel, a fixed optical component, an adjustable optical component, and an anti-collision terminal. One end of the barrel is mounted on an opening of a handle and connected to a chip module. The fixed optical component is mounted on the end of the barrel away from the chip module. The adjustable optical component is axially movable and mounted inside the barrel. The adjustable optical component includes an adjustable lens mount and an adjustable lens group. The adjustable lens mount has a mounting hole, and the adjustable lens group is mounted in the mounting hole of the adjustable lens mount. The anti-collision terminal is mounted on the inner wall of the end of the barrel away from the fixed optical component and is used to block the adjustable lens mount.

[0029] In one embodiment, an endoscope camera system is provided, including a light source, a beam guide, an endoscope, an optical bayonet, a communication cable, a camera host, a display, a video connection cable, and the aforementioned endoscope camera. The light source is connected to the endoscope through the beam guide, one end of the endoscope camera is connected to the endoscope through the optical bayonet, the other end of the endoscope camera is connected to the camera host through the communication cable, and the camera host is connected to the display through the video connection cable.

[0030] Beneficial effects of the invention

[0031] Beneficial effects

[0032] According to the endoscopic camera and endoscopic imaging system of the above embodiments, since an anti-collision terminal is installed at the end of the adjustable optical component away from the fixed optical component, and the optical lens located at the end of the adjustable lens holder is housed in the anti-collision terminal, the lens can avoid direct collision with the chip module during the installation of the adjustable optical component, thus protecting the adjustable optical component and ensuring the imaging quality.

[0033] Brief description of the accompanying drawings Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of an endoscopic camera system in one embodiment;

[0035] Figure 2 This is a schematic diagram of the structure of an endoscope camera in one embodiment;

[0036] Figure 3 This is a schematic diagram of the structure of an adjustable optical component in one embodiment;

[0037] Figure 4 This is a schematic diagram of the structure of an adjustable optical component in one embodiment;

[0038] Figure 5 This is a schematic diagram of the structure of an adjustable optical component in one embodiment;

[0039] Figure 6 This is a schematic diagram of the structure of an endoscope camera in one embodiment;

[0040] Figure 7 This is a schematic diagram of the structure of an adjustable optical component in one embodiment.

[0041] Invention Embodiments

[0042] Embodiments of the present invention

[0043] In different embodiments, similar elements are referred to by related and similar element designations. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid overwhelming the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0044] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0045] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0046] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that...

[0047] like Figure 1As shown, one embodiment provides an endoscope camera system 1000, which includes a light source 10, a beam guide 20, a rigid endoscope 30, an optical bayonet 40, an endoscope camera 50, a communication cable 81, a camera host 60, a display 70, and a video connection cable 82. The camera host 60 is connected to the endoscope camera 50 via the communication cable 81. The image signal obtained by the endoscope camera 50 is transmitted to the camera host 60 for processing via the communication cable 81. In some embodiments, the communication cable 81 can be an optical communication cable, such as an optical fiber; the endoscope camera 50 converts the image signal (electrical signal) into an optical signal, which is transmitted to the camera host 60 via the communication cable 81, and the camera host 60 then converts the optical signal back into an electrical signal. The camera host 60 is connected to the display 70 via the video connection cable 82 to send video signals to the display 70 for display. Those skilled in the art should understand that... Figure 1 This is merely an example of an endoscopic camera system 1000 and does not constitute a limitation on the endoscopic camera system 1000. The endoscopic camera system 1000 may include, but is not limited to, endoscopic camera systems 1000. Figure 1 The endoscopic camera system 1000 may include more or fewer components, or combinations of certain components, or different components. It may also include a dilator, a smoke control device, input / output devices, network access devices, etc.

[0048] Light source 10 is used to provide illumination to the area 100 to be observed. The illumination source includes a visible light source and a laser source (e.g., near-infrared light) corresponding to a fluorescent reagent. Light source 10 includes, but is not limited to, a laser source, an LED source, or a laser diode.

[0049] In this embodiment, the light source 10 includes a visible light source and a laser source corresponding to the fluorescent reagent. The visible light source is an LED light source. In one embodiment, the visible light source can provide multiple monochromatic lights of different wavelength ranges, such as blue light, green light, and red light. In other embodiments, the visible light source can also provide a combination of the multiple monochromatic lights, or a broadband white light source. The wavelength range of the monochromatic light is approximately 400 nm to 700 nm. The laser source is used to generate laser light. The laser light is, for example, near-infrared (NIR) light. The peak wavelength of the laser light is at least one value within the range of 780 nm or 808 nm.

[0050] Since the light source 10 can simultaneously provide continuous visible light and laser corresponding to the fluorescent reagent to the area to be observed, the acquisition efficiency of the visible light image signal and the fluorescent image signal reflected by the area to be observed 100 by the camera 50 is improved.

[0051] Prior to imaging using the endoscopic imaging system 1000, a contrast agent, such as indocyanine green (ICG), is introduced into the site 100 to be observed via intravenous or subcutaneous injection to image tissue structures and functions (e.g., blood / lymph / bile in blood vessels) that are not easily visible using standard visible light imaging techniques. The site 100 to be observed includes, but is not limited to, the circulatory system, lymphatic system, and tumor tissue. ICG, commonly known as indocyanine green, diagnostic green needle, or indocyanine green, is a commonly used contrast agent in the clinical diagnosis of cardiovascular diseases and is widely used in choroidal and retinal vascular imaging. Fluorescence is produced when the contrast agent in the site 100 absorbs the laser light corresponding to the fluorescent reagent generated by the laser source.

[0052] One embodiment provides an endoscope camera 50, and this application uses a rigid endoscope camera as an example for illustration.

[0053] like Figure 2 As shown, the endoscope camera 50 in this embodiment includes a handle 1, a chip module 2, an optical module 3, and a handwheel 4.

[0054] The handle 1 serves as a container for components and a gripper. It has a housing cavity 11, and openings at both ends communicating with the housing cavity 11. These openings are used to connect the communication cable 81 and the optical module 3, respectively. The handle 1 contains a chip module 2 and also has a button assembly 12. The doctor can hold the handle 1 and operate the endoscope camera for imaging and detection via the button assembly 12.

[0055] The chip module 2 includes components such as sensors and processors. The chip module 2 is used to convert optical signals into electrical signals, process the electrical signals, and then transmit them to the camera host 60 for processing via communication cable 81.

[0056] One end of the optical module 3 passes directly into the receiving cavity 11 of the handle 1 and connects to the chip module 2. Another end of the optical module 3 passes through the opening of the handle 1 and is fixed to the handle 1 by the front cover 13.

[0057] The optical module 3 includes a lens barrel 31, a fixed optical component 32, an adjustable optical component 33, and a shock-absorbing terminal 34. One end of the lens barrel 31 passes through an opening in the handle 1 and connects to the chip module 2. The lens barrel 31 is mounted on the opening at the end of the handle 1 away from the communication cable 81 via a front cover 13. The other end of the lens barrel 31 is connected to the optical bayonet 40. The fixed optical component 32 is fixedly mounted at the end of the lens barrel 31 away from the chip module 2. The adjustable optical component 33 is axially movable within the lens barrel 31 and can move relative to the fixed optical component 32 to adjust the imaging focal length.

[0058] The handwheel 4 is rotatably mounted on the lens barrel 31, which has a spiral groove. The handwheel 4 is connected to the adjustable optical component 33 inside the lens barrel 31 through a pin or other connecting parts. The pin passes through the spiral groove of the lens barrel 31. After the handwheel 4 is rotated, under the limiting action of the spiral groove of the lens barrel 31, the handwheel 4 and the adjustable optical component 33 will rotate axially at the same time, so that the handwheel 4 can be used to adjust the axial movement of the adjustable optical component 33.

[0059] In this embodiment, the fixed optical component 32 includes a fixed lens holder 321 and a fixed lens assembly 322. The fixed lens holder 321 is fixed inside the lens barrel 31 by a threaded connection. The fixed lens holder 321 has an annular structure and a cylindrical structure with a mounting hole in the middle. The fixed lens assembly 322 includes two optical lenses. The two optical lenses are fixedly installed in the mounting holes inside the two optical lenses. The two mirror surfaces of the fixed lens assembly 322 are flush with the two end faces of the fixed lens holder 321 in the axial direction.

[0060] like Figure 3 As shown, the adjustable optical assembly 33 includes an adjustable lens mount 331 and an adjustable lens assembly 332. The adjustable lens mount 331 is slidably mounted inside the lens barrel 31 and has a cylindrical structure with mounting holes coaxial with the fixed lens mount 321 and the lens barrel 31. The adjustable lens assembly 332 includes a first adjustable lens 3321, a second adjustable lens 3322, and a third adjustable lens 3323, which are sequentially mounted inside the lens barrel 31 away from the fixed optical assembly 32. In other embodiments, the adjustable lens assembly 332 may include two, four, or other numbers of lenses.

[0061] In this embodiment, the first adjustable lens 3321 and the second adjustable lens 3322 are convex lenses, and the third adjustable lens 3323 is a cemented lens. The mirror surface of the first adjustable lens 3321 facing the fixed optical assembly 32 includes a concave surface in the middle and an annular plane around the concave surface. The annular plane is flush with the end face of the adjustable lens holder 331, so that the first adjustable lens 3321 can abut against the lens of the fixed lens assembly 322. The end of the third adjustable lens 3323 away from the fixed optical assembly 32 protrudes from the end face of the lens barrel 31.

[0062] The adjustable lens mount 331 has an annular protrusion at the end away from the fixed optical component 32, and the annular protrusion has external threads. The anti-collision terminal 34 is a flexible sleeve structure, such as a rubber ring, with internal threads. The anti-collision terminal 34 is fixed to the annular protrusion of the adjustable lens mount 331 by threaded connection, and the end of the anti-collision terminal 34 away from the adjustable lens mount 331 protrudes from the mirror surface of the third adjustable lens 3323. The part of the third adjustable lens 3323 protruding from the adjustable lens mount 331 is located inside the anti-collision terminal 34, so that during the installation process, when the entire adjustable optical component 33 is inserted into the lens barrel 31 and collides with the chip module 2, the anti-collision terminal 34 directly collides with the chip module 2, avoiding lens movement and damage caused by the collision between the third adjustable lens 3323 and the chip module 2.

[0063] In other embodiments, the end of the third adjustable lens 3323 may also be configured to be flush with the end of the adjustable lens mount 33.

[0064] In other embodiments, the anti-collision terminal 34 can be fixed to the adjustable lens holder 331 by snap-fit ​​or adhesive; the anti-collision terminal 34 can also be an integral structure with the adjustable lens holder 331; the end face of the adjustable lens holder 331 away from the fixed optical component 32 can also be provided with an annular groove, and the anti-collision terminal 34 is snapped into the annular groove of the adjustable lens holder 331.

[0065] like Figure 4 As shown, in other embodiments, the anti-collision terminal 34 includes a plurality of elastic protrusions 36, which are uniformly bonded to the annular end face of the adjustable lens mount 331 away from the fixed optical component 32. The protrusions 36 have sufficient axial thickness and protrude from the third adjustable lens 3323. The protrusions 36 can also serve as anti-collision devices.

[0066] like Figure 5 As shown, in other embodiments, the anti-collision terminal 34 can also be installed on the inner wall of the end of the lens barrel 31 away from the anti-collision terminal 34. The anti-collision terminal 34 is located outside the adjustment stroke of the adjustable optical component 33. Without affecting the adjustment of the adjustable optical component 33, the anti-collision terminal 34 blocks the adjustable optical component 33, preventing the adjustable optical component 33 from colliding with the chip module 2.

[0067] like Figure 6As shown, in one embodiment, an endoscope camera is provided. Based on the above embodiment, the anti-collision terminal 34 is improved. A retaining ring 34a is provided at the end of the anti-collision terminal 34 away from the fixed optical component 32. The retaining ring 34a has a certain inner circle. The edge of the inner circle of the retaining ring 34a is equal to or slightly larger than the edge of the light path emitted from the third adjustable lens 3323. The inner diameter of the retaining ring 34a is slightly larger than the beam diameter of the light emitted from the third adjustable lens 3323, so as not to affect the imaging of the camera, and to block the area outside the light path of the third adjustable lens 3323, preventing stray light from entering the chip module 2 and improving the imaging quality.

[0068] In one embodiment, an endoscope camera 50 is provided, which adds an anti-collision layer 35 to the above embodiment.

[0069] like Figure 7 As shown, since the adjustable optical component 33 may collide with the fixed optical component 32 during installation, to prevent the first adjustable lens 3321 in the adjustable optical component 33 from colliding with the fixed optical component 32, in this embodiment, an annular anti-collision layer 35 is attached to the annular plane of the first adjustable lens 3321 facing the fixed optical component 32. For example, the anti-collision layer 35 is a silicone layer with a certain elasticity. The silicone layer can play a role in buffering and shock absorption, preventing the first adjustable lens 3321 from directly colliding with the fixed optical component 32. Furthermore, a light-blocking black silicone layer is used, which can block stray light from entering from the annular plane, improving the imaging quality.

[0070] In this embodiment, the thickness of the anti-collision layer 35 is in the range of 0.1mm-0.3mm. The anti-collision layer 35 is a thin anti-collision film with a certain anti-collision elasticity, and it also ensures that the first adjustable lens 3321 and the fixed optical component 32 are almost in contact and docked, without affecting the optical path.

[0071] The anti-collision layer 35 can also be a layer of polymer materials such as epoxy resin, which has the functions of impact resistance and wear resistance. The anti-collision layer 35 can also be a transparent material layer that only has the function of anti-collision.

[0072] In other embodiments, the anti-collision layer 35 may also be attached to the end face of the adjustable lens mount 331 facing the fixed optical component 32, or the anti-collision layer 35 may be attached to both the annular plane of the first adjustable lens 3321 and the end face of the adjustable lens mount 331 facing the fixed optical component 32, which can also play the role of anti-collision.

[0073] In other embodiments, the anti-collision layer 35 may also be attached to the end face of the fixed optical component 32 facing the adjustable optical component 33, and the anti-collision layer 35 is located outside the area where the light emitted from the fixed optical component 32 is emitted. While ensuring that the anti-collision layer 35 does not block the light path, it can play a role in preventing collisions.

[0074] In one embodiment, an endoscope camera is provided. The difference from the above embodiments is that this embodiment uses a fixed optical module and an anti-collision terminal is installed on the optical module to prevent the optical components from being damaged by displacement and collision.

[0075] The optical module of the endoscope camera in this embodiment includes a lens barrel, optical components, and anti-collision terminals. One end of the lens barrel is connected to the chip module. The optical components include a lens mount and a lens group. The lens mount is installed inside the lens barrel and has mounting holes. The lens group includes multiple optical lenses, which are sequentially installed in the mounting holes of the lens mount. The anti-collision terminals are installed at the end of the lens mount facing the chip module and protrude axially from the axial end face of the lens group. The optical lenses at the middle end of the lens group are located inside the anti-collision terminals. The anti-collision terminals prevent the optical lenses from colliding with the chip module during installation.

[0076] In this embodiment, the anti-collision terminal can also be installed inside the lens barrel and positioned close to the chip module, thus serving the same anti-collision function.

[0077] The above examples illustrate the present invention and are only intended to aid in understanding the invention, not to limit it. Those skilled in the art can make variations to the specific embodiments described above based on the spirit of the invention.

Claims

1. An endoscope camera, characterized in that, include: A handle having a receiving cavity, and openings at both ends of the handle communicating with the receiving cavity; A chip module, wherein the chip module is installed in the receiving cavity of the handle; An optical module includes a lens barrel, a fixed optical component, an adjustable optical component, and an anti-collision terminal. One end of the lens barrel is mounted on the opening of the handle and connected to the chip module. The fixed optical component is mounted on the end of the lens barrel away from the chip module. The adjustable optical component is axially movable and mounted inside the lens barrel. The adjustable optical component includes an adjustable lens mount and an adjustable lens group. The adjustable lens mount has a mounting hole, and the adjustable lens group is mounted in the mounting hole of the adjustable lens mount. The end of the adjustable lens group away from the fixed optical component protrudes from the end face of the adjustable lens mount. The anti-collision terminal is mounted on the end of the adjustable lens mount away from the fixed optical component, and the anti-collision terminal axially protrudes from the axial end face of the adjustable lens group. And a handwheel, which is rotatably mounted on the lens barrel and connected to the adjustable optical assembly via a connector.

2. The endoscope camera as described in claim 1, characterized in that, The adjustable lens assembly, which protrudes from the end face of the adjustable lens mount, is located within the anti-collision terminal.

3. The endoscope camera as described in claim 1, characterized in that, The anti-collision terminal is an elastic element.

4. The endoscope camera as described in claim 1, characterized in that, The anti-collision terminal is a sleeve.

5. The endoscope camera as described in claim 4, characterized in that, The anti-collision terminal has a retaining ring at the end away from the fixed optical component, and the inner diameter of the retaining ring is greater than or equal to the beam diameter of the emitted light from the adjustable lens group.

6. The endoscopic camera as described in claim 4, characterized in that, The adjustable lens mount has an axial annular protrusion or annular groove at one end away from the fixed optical component. One end of the anti-collision terminal is fitted onto the annular protrusion of the adjustable lens mount or snapped into the annular groove of the adjustable lens mount.

7. The endoscope camera as described in claim 4, characterized in that, The anti-collision terminal is threadedly connected to the adjustable lens mount.

8. The endoscope camera as described in claim 4, characterized in that, The anti-collision terminal and the adjustable lens holder are integrated into one structure.

9. The endoscope camera as described in claim 1, characterized in that, The anti-collision terminal includes a plurality of protrusions, which are evenly mounted on the end face of the adjustable lens mount away from the fixed optical component.

10. The endoscope camera as described in claim 1, characterized in that, The adjustable lens assembly includes a first adjustable lens, a second adjustable lens, and a third adjustable lens. The first adjustable lens, the second adjustable lens, and the third adjustable lens are arranged sequentially away from the fixed optical component within the mounting hole of the adjustable lens holder. The end face of the first adjustable lens facing the fixed optical component is flush with the end face of the adjustable lens holder, and the end face of the third adjustable lens away from the fixed optical component protrudes from the end face of the adjustable lens holder.

11. The endoscope camera as described in claim 1, characterized in that, The optical mirror surface of the adjustable lens group facing the fixed optical component is flush with the end face of the adjustable lens mount. The optical mirror surface of the adjustable lens group facing the fixed optical component includes a concave surface in the middle and an annular plane surrounding the concave surface. An anti-collision layer is attached to the annular plane of the optical mirror surface and / or the end face of the adjustable lens mount facing the fixed optical component.

12. The endoscope camera as described in claim 10, characterized in that, An anti-collision layer is attached to the surface of the fixed optical component facing the first adjustable lens, and the anti-collision layer is located outside the area of ​​the optical path emitted by the fixed optical component.

13. The endoscopic camera as described in claim 11 or 12, characterized in that, The anti-collision layer is a silicone layer.

14. The endoscopic camera as described in claim 13, characterized in that, The silicone layer is a black silicone layer.

15. An endoscope camera, characterized in that, The lens includes a lens barrel, a fixed optical component, an adjustable optical component, and an anti-collision terminal. One end of the lens barrel is mounted on an opening in a handle and connected to a chip module. The fixed optical component is mounted on the end of the lens barrel away from the chip module. The adjustable optical component is axially movable and mounted inside the lens barrel. The adjustable optical component includes an adjustable lens mount and an adjustable lens assembly. The adjustable lens mount has a mounting hole, and the adjustable lens assembly is mounted in the mounting hole of the adjustable lens mount. The end of the adjustable lens assembly away from the fixed optical component protrudes from the end face of the adjustable lens mount. The anti-collision terminal is mounted on the end of the adjustable lens mount away from the fixed optical component, and the anti-collision terminal axially protrudes from the axial end face of the adjustable lens assembly.

16. The endoscopic camera as described in claim 15, characterized in that, The adjustable lens assembly, which protrudes from the end face of the adjustable lens mount, is located within the anti-collision terminal.

17. An endoscope camera, characterized in that, The lens includes a lens barrel, a fixed optical component, an adjustable optical component, and a shock-absorbing terminal. One end of the lens barrel is mounted on an opening in a handle and connected to a chip module. The fixed optical component is mounted on the end of the lens barrel away from the chip module. The adjustable optical component is axially movable and mounted inside the lens barrel. The adjustable optical component includes an adjustable lens mount and an adjustable lens assembly. The adjustable lens mount has a mounting hole, and the adjustable lens assembly is mounted in the mounting hole of the adjustable lens mount. The end of the adjustable lens assembly away from the fixed optical component protrudes from the end face of the adjustable lens mount. The shock-absorbing terminal is mounted on the inner wall of the end of the lens barrel away from the fixed optical component and is used to block the adjustable lens mount.

18. The endoscope camera as described in claim 17, characterized in that, The anti-collision terminal is located outside the adjustment stroke of the adjustable optical component.

19. An endoscopic imaging system, characterized in that, The device includes a light source, a beam guide, an endoscope, an optical bayonet, a communication cable, a camera host, a display, a video connection cable, and an endoscope camera as described in any one of claims 1 to 18. The light source is connected to the endoscope via the beam guide, one end of the endoscope camera is connected to the endoscope via the optical bayonet, the other end of the endoscope camera is connected to the camera host via the communication cable, and the camera host is connected to the display via the video connection cable.

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