Endoscope image measuring system

Abstract

The utility model relates to an endoscope image measuring system which comprises a camera shooting module, an endoscope clamping adjusting module and a testing module, and the camera shooting module comprises a CCD camera and a camera adjusting assembly; the endoscope clamping and adjusting module comprises a lens clamp and an endoscope adjusting assembly, the lens clamp is located above the CCD camera, and the endoscope adjusting assembly is installed on the camera adjusting assembly; the test module comprises a backlight source, a test target, a backlight source adjusting assembly and a target adjusting assembly, the test target is horizontally arranged above the lens clamp, and the target adjusting assembly is used for adjusting the position of the test target and driving the test target to rotate around the Z axis; the backlight source is located above the test target, and the backlight source adjusting assembly is used for adjusting the position of the backlight source. According to the utility model, the image quality and magnification of the to-be-tested lens can be synchronously tested at different positions, the to-be-tested lens can be matched one by one, the to-be-tested lens can be matched more conveniently and reliably, and the performance consistency of endoscopes with different viewing angles can be detected more conveniently and quickly.

Description

Technical field:

[0001] The utility model relates to an endoscope image measuring system. Background technology:

[0002] As a kind of medical device, the doctor can observe the situation at the surgical site by connecting the endoscope to the display device during minimally invasive surgery. The 3D endoscope provides stereoscopic images through binocular lenses and cameras, making the doctor's observation of the surgical site more three-dimensional and realistic.

[0003] Because the 3D endoscope system needs to use two lenses in pairs, compared with the high image quality requirements of conventional endoscope lenses, the performance parameters of the two lenses must be highly matched to ensure the quality of the final image. At present, the existing endoscope imaging systems and imaging methods cannot fully meet the testing of the center and edge resolution and magnification consistency of endoscopes at different viewing angles. Utility model content:

[0004] The utility model makes improvements on the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the utility model is to provide an endoscope image measuring system with reasonable design, which can more conveniently and quickly check the performance consistency of endoscopes with different viewing angles.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an endoscope imaging system, comprising a camera module, an endoscope clamping and adjusting module and a test module, wherein the camera module comprises a CCD camera, a camera adjustment component for adjusting the position of the CCD camera along the Z-axis direction and adjusting the tilt angle of the CCD camera; the endoscope clamping and adjusting module comprises a lens fixture for clamping the endoscope, an endoscope adjustment component for adjusting the position of the endoscope along the Z-axis direction and adjusting the tilt angle of the endoscope, the lens fixture is located above the CCD camera, and the endoscope adjustment component is installed on the tilt angle adjustment part of the camera adjustment component; the test module comprises a backlight source, a test target, a backlight source adjustment component and a target adjustment component, the test target is horizontally arranged above the lens fixture, and the target adjustment component is used to adjust the position of the test target along the Z-axis and Y-axis directions and drive the test target to rotate around the Z-axis; the backlight source is located above the test target, and the backlight source adjustment component is used to adjust the position of the backlight source along the Z-axis.

[0006] Furthermore, the camera adjustment assembly includes a lens matching seat, a camera base, a Z-axis adjustment platform and a tilt angle adjustment platform A which are arranged in sequence from top to bottom, the tilt angle adjustment platform A is arranged horizontally, and the Z-axis adjustment platform is installed on the movable end of the tilt angle adjustment platform A; the camera base is installed on the movable end of the Z-axis adjustment platform, the lens matching seat is used to adapt to the lens to be tested, and the CCD camera is installed on the camera base.

[0007] Furthermore, the endoscope adjustment assembly includes a Z-axis dovetail groove slide A and a tilt angle adjustment platform B, the Z-axis dovetail groove slide A is installed on a connecting plate, and the connecting plate is connected to the movable end of the tilt angle adjustment platform A; the tilt angle adjustment platform B is vertically installed on the movable end of the Z-axis dovetail groove slide A; the lens clamp is horizontally arranged and connected to the movable end of the tilt angle adjustment platform B.

[0008] Furthermore, the lens clamp includes a clamp base, a clamp connecting arm and a chuck which are arranged in sequence from left to right, the clamp base is fixedly arranged on the movable end of the tilt angle adjustment platform B, the left end of the clamp connecting arm is slidably connected to the horizontal slide groove on the clamp base, and the side of the clamp base is threaded with a locking screw A for locking the clamp connecting arm; the chuck includes a movable chuck and a fixed chuck which are distributed toward each other front and rear and are used to clamp the endoscope, the left end of the fixed chuck is fixedly connected to the clamp connecting arm, the left end of the movable chuck is hinged to the clamp connecting arm, a locking screw B is arranged between the movable chuck and the fixed chuck, and the locking screw B is used to lock the movable chuck and the fixed chuck.

[0009] Furthermore, the backlight source adjustment assembly includes a Z-axis dovetail groove slide B, a moving end of the Z-axis dovetail groove slide B is provided with a backlight source fixing seat, and the backlight source is installed on the backlight source fixing seat.

[0010] Furthermore, the target adjustment assembly includes a rotary adjustment table, a Z-axis dovetail groove slide C, a Y-axis dovetail groove slide and a target fixture, the rotary adjustment table is horizontally arranged, the Z-axis dovetail groove slide C is installed on the rotating end of the rotary adjustment table, and the Y-axis dovetail groove slide is installed on the moving end of the Z-axis dovetail groove slide C; the target fixture is installed on the moving end of the Y-axis dovetail groove slide, and the right end of the test target is connected to the target fixture.

[0011] Furthermore, symmetrically distributed resolution line pairs are arranged at the center and four corners of the test target, and the resolution line pairs spread outward from the center; and a cross mark with a scale is arranged on the test target.

[0012] Furthermore, it also includes a mounting seat, and the camera adjustment component, backlight adjustment component and target adjustment component are all arranged on the mounting seat, the backlight adjustment component is located in front of the camera adjustment component, and the target adjustment component is located on the right side of the camera adjustment component.

[0013] Furthermore, the mounting base includes a horizontally arranged optical plate, and leveling feet are arranged around the bottom of the optical plate.

[0014] Compared with the prior art, the utility model has the following effects: the utility model is reasonably designed, and can synchronously test the image quality and magnification of the lens to be tested at different positions, and can pair them one by one, so that the lenses to be tested can be matched more conveniently and reliably, and the performance consistency of endoscopes with different viewing angles can be tested more conveniently and quickly. Description of the drawings:

[0015] Figure 1 It is a schematic diagram of the main structure of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the endoscope clamping and adjusting module and the camera module in the embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the exploded state of the lens matching seat in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the lens clamp in the embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the test target in the embodiment of the utility model.

[0020] In the figure:

[0021] 1-mounting seat; 11-optical flat plate; 12-leveling foot; 2-camera module; 22-CCD camera; 23-camera adjustment assembly; 231-camera base; 232-lens matching seat; 2321-upper end of lens matching seat; 2322-lower end of lens matching seat; 2323-pressing seat; 2324-screw; 233-Z-axis adjustment table; 234-tilt angle adjustment table A; 3-endoscope clamping adjustment module; 31-lens fixture; 311-fixture base; 312-fixture connecting arm; 313-fixed chuck; 31 4-movable chuck; 315-locking screw A; 316-locking screw B; 32-endoscope adjustment assembly; 321-Z-axis dovetail groove slide A; 322-tilt angle adjustment table B; 4-test module; 41-backlight adjustment assembly; 411-Z-axis dovetail groove slide B; 412-backlight fixture; 42-backlight; 43-target adjustment assembly; 431-rotation adjustment table; 432-Z-axis dovetail groove slide C; 433-Y-axis dovetail groove slide; 434-target fixture; 44-test target; 441-resolution line pair. Specific implementation method:

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] like Figures 1 to 5 As shown, the utility model is an endoscope imaging system, which is used to solve the test of the pairing performance of endoscopes with different viewing angles, and specifically includes a camera module 2, an endoscope clamping and adjusting module 3 and a testing module 4. The camera module 2 includes a CCD camera 22 and a camera adjustment component 23. The camera adjustment component 23 is used to adjust the position of the CCD camera 22 along the Z-axis direction and adjust the tilt angle of the CCD camera 22; the endoscope clamping and adjusting module 3 includes a lens clamp 31 for clamping the endoscope and an endoscope adjustment component 32. The lens clamp 31 clamps the endoscope to be tested, and the endoscope adjustment component 32 is used to adjust the position of the endoscope along the Z-axis direction and adjust the tilt angle of the CCD camera 22. To adjust the endoscope tilt angle, the lens fixture 31 is located above the CCD camera 22, and the endoscope adjustment component 32 is installed on the tilt angle adjustment part of the camera adjustment component 23; the test module 4 includes a backlight source 42, a test target 44, a backlight source adjustment component 41 and a target adjustment component 43, the test target 44 is horizontally arranged above the lens fixture 31, and the target adjustment component 43 is used to adjust the position of the test target 44 along the Z-axis and Y-axis directions and drive the test target to rotate around the Z-axis; the backlight source 42 is located above the test target 44, and the backlight source adjustment component 41 is used to adjust the position of the backlight source 42 along the Z-axis.

[0025] In this embodiment, Figure 2 As shown, the camera adjustment assembly 23 includes a lens matching seat 232, a camera base 231, a Z-axis adjustment platform 233 and an inclination angle adjustment platform A234 which are arranged in sequence from top to bottom. The inclination angle adjustment platform A234 is arranged horizontally, and the Z-axis adjustment platform 233 is installed at the moving end of the inclination angle adjustment platform A234; the camera base 231 is installed at the moving end of the Z-axis adjustment platform 233, the lens matching seat 232 is used to match the lens to be tested, and the lens matching seat 232 positions the lens, and the CCD camera 22 is installed on the camera base 231. The Z-axis adjustment platform 233 can fine-tune the distance between the lens to be tested and the CCD camera 22 and read the value after the lens fixture 31 fixes the lens to be tested, and the inclination angle adjustment platform A234 can be adjusted for lenses to be tested with different viewing angles to ensure that the test target is parallel to the light incident surface of the lens to be tested. It should be noted that the lens matching seat can be replaced according to the lens to be tested.

[0026] In this embodiment, the camera module 2 further includes a computer, and the computer is connected to the CCD camera.

[0027] In this embodiment, Figure 3 As shown, the lens matching seat 232 is composed of the upper end 2321 of the lens matching seat and the lower end 2322 of the lens matching seat. The top of the lower end 2322 of the lens matching seat has a pressing seat 2323 for placing the CCD camera, and the two ends of the lower end 2322 of the lens matching seat have screws 2324 for matching with the upper end 2321 of the lens matching seat; the upper end 2321 of the lens matching seat is reserved with a CCD camera 22 interface line groove to facilitate the wiring of the CCD camera 22. It should be noted that when in use, the CCD camera 22 and lens matching seats 232 of different models can be replaced to adapt to CCD cameras 22 of different models and sizes and lenses to be tested. Through the camera base and lens matching seat structure, it can be used to cope with the testing of lenses of different sizes, eliminate the influence of stray light on the CCD during the test, and improve the convenience of the test. The lens matching seat can also be changed to complete the debugging and assembly directly on the test platform.

[0028] In this embodiment, Figure 2 As shown, the endoscope adjustment assembly 32 includes a Z-axis dovetail groove slide A321 and a tilt angle adjustment table B322, wherein the Z-axis dovetail groove slide A321 is mounted on a connecting plate, and the connecting plate is connected to the moving end of the tilt angle adjustment table A322; the tilt angle adjustment table B322 is vertically mounted on the moving end of the Z-axis dovetail groove slide A321; and the lens fixture 31 is horizontally arranged and connected to the moving end of the tilt angle adjustment table B322. The endoscope adjustment assembly 32 is mounted on the tilt angle adjustment table A234 of the camera adjustment assembly, and is used to adjust the tilt angle adjustment table A234 when the viewing angle of the lens to be tested is not 0°, so as not to affect the direct relative position between the lens to be tested and the CCD camera 22. The tilt angle adjustment table B322 can adjust the rotation angle of the lens to be tested relative to the CCD camera 22 after the lens fixture 31 fixes the lens, and is mainly used for adjustment when the viewing angle of the lens to be tested is not 0°.

[0029] In this embodiment, Figure 4As shown, the lens clamp 31 includes a clamp base 311, a clamp connecting arm 312 and a chuck which are arranged in sequence from left to right, the clamp base 311 is fixedly arranged on the movable end of the tilt angle adjustment platform B322, the left end of the clamp connecting arm 312 is slidably connected to the horizontal slide groove on the clamp base 311, and the side of the clamp base 311 is threaded with a locking screw A315 for locking the clamp connecting arm; the chuck includes a movable chuck 314 and a fixed chuck 313 which are distributed in front and rear directions and are used to clamp the endoscope, the left end of the fixed chuck 313 is fixedly connected to the clamp connecting arm 312, the left end of the movable chuck 314 is hinged to the clamp connecting arm 312, a locking screw B316 is arranged between the movable chuck 313 and the fixed chuck 314, and the locking screw B316 is used to lock the movable chuck 313 and the fixed chuck 314. When in use, after the fixed chuck and the movable chuck clamp the lens to be tested, the locking screw A and the locking screw B can be locked to fix the lens to be tested, and the lens clamp 31 can be conveniently disassembled and replaced according to the size and model of the lens to be tested. The lens clamp adopts a flexible and lockable structure, which can better correspond to the position of the lens to be tested, clamp and fix the lens.

[0030] In this embodiment, the backlight adjustment assembly 41 includes a Z-axis dovetail groove slide B411, a backlight fixture 412 is disposed at the movable end of the Z-axis dovetail groove slide B411, and the backlight 42 is mounted on the backlight fixture 412. The backlight 42 can be adjusted in the Z-axis direction according to this structure.

[0031] In this embodiment, the target adjustment assembly 43 includes a rotating adjustment table 431, a Z-axis dovetail groove slide C432, a Y-axis dovetail groove slide 433 and a target fixture 434. The rotating adjustment table 431 is horizontally arranged, the Z-axis dovetail groove slide C432 is installed at the rotating end of the rotating adjustment table 431, and the Y-axis dovetail groove slide 433 is installed at the moving end of the Z-axis dovetail groove slide C432; the target fixture 434 is installed at the moving end of the Y-axis dovetail groove slide 433, and the right end of the test target 44 is connected to the target fixture 434.

[0032] In this embodiment, the backlight source 42 and the test target 44 are separately provided, so that when the test module 4 is tested under a vertical imaging system, the weight of the backlight source 42 can be ignored, and adjustment can be performed more conveniently.

[0033] It should be noted that the Z-axis adjustment table, tilt angle adjustment table A, Z-axis dovetail groove slide A, tilt angle adjustment table B, Z-axis dovetail groove slide B, Z-axis dovetail groove slide C, and Y-axis dovetail groove slide are all existing mature products. For example, the model of the Z-axis adjustment table is LZ-60, the model of the tilt angle adjustment table A is GFG6030-C60H20, the model of the Z-axis dovetail groove slide A is LWX60-L150, the model of the tilt angle adjustment table B is GFG6030-C60H20, the model of the Z-axis dovetail groove slide B is LWX60-L300, the model of the Z-axis dovetail groove slide C is LWX60-L300, and the model of the Y-axis dovetail groove slide is LWX60-L250. They are widely used in the position adjustment of lenses in the optical field, and our detailed structure and working principle will not be repeated here.

[0034] In this embodiment, Figure 5 As shown, the center and four corners of the test target 44 are provided with symmetrically distributed resolution line pairs 441 (central circular area and four corner square areas), and spread outward from the center at a certain interval. The specific distribution position is not limited and can be customized according to the imaging size of the CCD camera 22 and the imaging range of the lens to be tested during actual use, and is used to test the center and edge image quality of the lens imaging at different positions. The test target is provided with a cross mark with a scale, which is used to adjust the lens to be tested and test the magnification of the lens to be tested.

[0035] In this embodiment, a mounting base 1 is further included, and the camera adjustment component 23, the backlight adjustment component 41 and the target adjustment component 43 are all arranged on the mounting base 1, the backlight adjustment component is located in front of the camera adjustment component, and the target adjustment component is located on the right side of the camera adjustment component. Figure 1 As shown, the mounting base 1 includes a horizontally arranged optical flat plate 11, and leveling feet 12 are arranged around the bottom of the optical flat plate 11. The camera module and the test module are both mounted on the optical flat plate. The optical flat plate is manually leveled by the leveling feet to ensure that the endoscope imaging system can remain horizontal.

[0036] In this embodiment, the endoscope imaging method comprises the following steps:

[0037] Step S1: Select a lens fixture 31, a CCD camera 22, and a lens matching seat 232 that match the lens to be tested, and install them on the endoscope imaging system;

[0038] Step S2: Mount the lens to be tested on the lens matching seat 232, use the lens clamp 31 to clamp and lock the lens to be tested, and adjust the tilt angle adjustment table B322 as needed to make the rotation angle between the lens and the CCD camera 22 meet the test requirements;

[0039] Step S3: adjusting the tilt angle adjustment platform A234 of the camera module according to the viewing angle of the lens to be tested, so that the front end of the lens is level;

[0040] Step S4: adjust the target fixture 434 of the test module 4 to match the test target size, place the visual target 44 on the target fixture 434 on the upper side of the lens to be tested and fix it, adjust the Z-axis adjustment table 233 of the camera module 2 to make the image clear, and synchronously adjust the test target orientation so that the cross mark of the test target 44 is located at the center of the field of view at the set working distance of the lens to be tested and coincides with the center reference cross line calibrated by the CCD camera sensor;

[0041] Step S5: Move the test target 44 up and down, adjust the tilt angle adjustment table A234 of the camera module 2 at the lower side of the working distance of the lens to be tested, so that the cross mark of the test target 44 coincides with the central cross line of the image formed by the camera module 2, adjust the orientation of the test target 44 at the upper side of the working distance of the lens to be tested, so that the cross mark of the test target 44 coincides with the central cross line of the image formed by the camera module 2, and repeat this step until the test target 44 can satisfy the cross mark coincidence with the central cross line of the image formed by the camera module 2 without adjustment at the upper and lower sides;

[0042] Step S6: Move the test target 44 back to the working distance of the lens to be tested, adjust the Z-axis adjustment stage 233 of the camera module 2 to make the image clear, and record the lens center and edge resolution, and the pixel coordinates at the two positions of the left and right set scales of the lens center;

[0043] Step S7: According to the depth of field requirement of the lens to be tested, move the test target 44, measure and record the center and edge resolutions of the lens to be tested, and the pixel coordinates at two positions of the set scale on the left and right of the lens center at multiple different distances within the depth of field, and the resolution at different distances within the depth of field and the difference in the left and right pixel coordinates meet the requirements.

[0044] The advantages of the present invention are: (1) the image quality and magnification of the lens to be tested can be tested synchronously at different positions, and the lenses to be tested can be matched one by one, which can be matched more conveniently and reliably, thereby improving the imaging quality of the final product; (2) the camera base and the lens matching seat are detachable structures, which can be used to cope with the testing of lenses of different sizes and eliminate the influence of stray light on the CCD during the test, thereby improving the convenience of the test; the lens matching seat can also be changed, and the debugging and assembly can be completed directly on the test platform; (3) the lens fixture adopts a flexible and lockable structure, which can better correspond to the orientation of the lens to be tested, clamp and fix the lens; (4) the test system is constructed by a vertical structure, and the lens matching seat is used to position the lens, which can ensure the consistency of the initial position of the lens each time it is placed, and the backlight source is separated from the test target, thereby improving the convenience of test target adjustment, backlight source replacement, and test target replacement.

[0045] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).

[0046] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0047] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An endoscope imaging system, characterized in that: It includes a camera module, an endoscope clamping and adjusting module and a test module, wherein the camera module includes a CCD camera and a camera adjustment component for adjusting the position of the CCD camera along the Z-axis direction and adjusting the tilt angle of the CCD camera; the endoscope clamping and adjusting module includes a lens fixture for clamping the endoscope and an endoscope adjustment component for adjusting the position of the endoscope along the Z-axis direction and adjusting the tilt angle of the endoscope, the lens fixture is located above the CCD camera, and the endoscope adjustment component is installed on the tilt angle adjustment part of the camera adjustment component; the test module includes a backlight source, a test target, a backlight source adjustment component and a target adjustment component, the test target is horizontally arranged above the lens fixture, and the target adjustment component is used to adjust the position of the test target along the Z-axis and Y-axis directions and drive the test target to rotate around the Z-axis; the backlight source is located above the test target, and the backlight source adjustment component is used to adjust the position of the backlight source along the Z-axis.

2. An endoscope imaging system according to claim 1, characterized in that: The camera adjustment assembly includes a lens matching seat, a camera base, a Z-axis adjustment platform and an inclination angle adjustment platform A which are arranged in sequence from top to bottom. The inclination angle adjustment platform A is arranged horizontally, and the Z-axis adjustment platform is installed on the moving end of the inclination angle adjustment platform A; the camera base is installed on the moving end of the Z-axis adjustment platform, the lens matching seat is used to adapt to the lens to be tested, and the CCD camera is installed on the camera base.

3. An endoscope imaging system according to claim 2, characterized in that: The endoscope adjustment assembly includes a Z-axis dovetail groove slide A and a tilt angle adjustment platform B, wherein the Z-axis dovetail groove slide A is installed on a connecting plate, and the connecting plate is connected to the movable end of the tilt angle adjustment platform A; the tilt angle adjustment platform B is vertically installed on the movable end of the Z-axis dovetail groove slide A; and the lens fixture is horizontally arranged and connected to the movable end of the tilt angle adjustment platform B.

4. An endoscope imaging system according to claim 1 or 3, characterized in that: The lens clamp includes a clamp base, a clamp connecting arm and a chuck which are arranged in sequence from left to right. The clamp base is fixedly arranged on the movable end of the tilt angle adjustment platform B, the left end of the clamp connecting arm is slidably connected to the horizontal slide groove on the clamp base, and the side of the clamp base is threaded with a locking screw A for locking the clamp connecting arm; the chuck includes a movable chuck and a fixed chuck which are distributed in front and rear directions and are used to clamp the endoscope, the left end of the fixed chuck is fixedly connected to the clamp connecting arm, the left end of the movable chuck is hinged to the clamp connecting arm, a locking screw B is arranged between the movable chuck and the fixed chuck, and the locking screw B is used to lock the movable chuck and the fixed chuck.

5. An endoscope imaging system according to claim 2, characterized in that: The backlight source adjustment component comprises a Z-axis dovetail groove slide B, a moving end of the Z-axis dovetail groove slide B is provided with a backlight source fixing seat, and the backlight source is mounted on the backlight source fixing seat.

6. The endoscope imaging system according to claim 1, characterized in that: The target adjustment assembly includes a rotary adjustment table, a Z-axis dovetail groove slide C, a Y-axis dovetail groove slide and a target fixture. The rotary adjustment table is horizontally arranged, the Z-axis dovetail groove slide C is installed on the rotating end of the rotary adjustment table, and the Y-axis dovetail groove slide is installed on the moving end of the Z-axis dovetail groove slide C; the target fixture is installed on the moving end of the Y-axis dovetail groove slide, and the right end of the test target is connected to the target fixture.

7. An endoscope imaging system according to claim 1, characterized in that: The center and four corners of the test target are provided with symmetrically distributed resolution line pairs, and the resolution line pairs spread outward from the center; The test target is provided with a cross mark with scale.

8. The endoscope imaging system according to claim 1, characterized in that: It also includes a mounting seat, and the camera adjustment component, backlight adjustment component and target adjustment component are all arranged on the mounting seat. The backlight adjustment component is located in front of the camera adjustment component, and the target adjustment component is located on the right side of the camera adjustment component.

9. An endoscope imaging system according to claim 8, characterized in that: The mounting seat comprises a horizontally arranged optical plate, and leveling adjustment feet are arranged around the bottom of the optical plate.

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