Endoscope testing system

Abstract

The invention discloses an endoscope testing system in the technical field of endoscope optical measurement, which comprises an integrating sphere light source and a camera module, the integrating sphere light source is arranged at one side part of a testing box body, the camera module is arranged in the testing box body, a target testing position is arranged at the light outlet of the integrating sphere light source, and the target testing position is arranged at the light outlet of the integrating sphere light source. The integrating sphere light source provides stable illumination for a target on the target test position, an endoscope lens on the camera module captures a real-time image of the target, and the identified target image is analyzed and calculated to obtain the corresponding optical performance. A target sample is placed at a light source opening, and the light source is adjusted and controlled to adjust the light source data test; through the arrangement of the camera module and the arrangement of the height adjusting assembly, the transverse adjusting assembly, the angle adjusting assembly and the advancing guide rail, the test position of the endoscope and the target can be rapidly adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscope optical measurement, in particular to an endoscope testing system. Background Art

[0002] Medical endoscopes generally consist of a medical cold light source, a visual or imaging system, and the endoscope body. Electronic endoscopes can also integrate the camera, illumination path, and operating unit within the endoscope. The optical performance of an endoscope primarily includes light source characteristics, illumination characteristics, and imaging characteristics. A comprehensive evaluation of its optical performance requires comprehensive consideration of these components.

[0003] Cold light source performance includes: spectral characteristics, radiation performance; lighting characteristics include: color reproduction, lighting effect of the mirror, lighting uniformity, etc.; imaging characteristics include: field of view angle, viewing angle, angular resolution, depth of field, brightness response characteristics, signal-to-noise ratio, static image tolerance, etc.

[0004] my country's medical industry standard YY / T 1587 "Medical Endoscopes - Electronic Endoscopes" provides test methods and judgment basis for each test item.

[0005] In existing testing solutions, endoscope alignment, sample installation, and target switching are often manual, requiring significant time and effort. This requires repeated adjustments to the relative positions of the sample and target, as well as sample clamping between different devices, to achieve comprehensive measurements of the endoscope's optical performance. Furthermore, manual alignment is prone to deviations, leading to significant measurement errors. This paper addresses these issues with an endoscope testing system. Summary of the Invention

[0006] The object of the present invention is to provide an endoscope testing system to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an endoscope testing system, comprising an integrating sphere light source and a camera module, wherein the integrating sphere light source is mounted on one side of a test box, the camera module is mounted inside the test box, a target test position is provided at the light outlet of the integrating sphere light source, the integrating sphere light source provides stable illumination for a target at the target test position, and an endoscope lens on the camera module captures a real-time image of the target, analyzes the identified target image, and calculates the corresponding optical performance;

[0008] Among them, the camera module can dynamically calibrate the position of the endoscope lens, control the position movement / rotation of the endoscope lens, and achieve sub-millimeter alignment precision adjustment.

[0009] In a further solution, the camera module includes a height adjustment component, a lateral adjustment component, an angle adjustment component, a travel guide rail and a test camera mounting position. The endoscope lens is fixedly installed on the test camera mounting position. The height adjustment component is used to adjust the height position of the endoscope lens, the lateral adjustment component is used to adjust the lateral position of the endoscope lens, the angle adjustment component is used to adjust the rotation angle of the endoscope lens, and the travel guide rail is used to adjust the distance between the endoscope lens and the target test position.

[0010] In a further solution, the height adjustment assembly is a vertical bracket arranged vertically and in parallel, and an adjusting screw a is installed in the vertical bracket, and the end of the adjusting screw a is rotatably installed on the vertical bracket, and a driving motor a is installed on the vertical bracket. The driving end of the driving motor a is connected to the adjusting screw a through a coupling, and the two adjusting screws a are screwed onto the transverse bracket of the transverse adjustment assembly, and the transverse bracket is arranged in parallel on the two adjusting screws a, and the two driving motors a are driven synchronously and in the same direction, and the two adjusting screws a rotate synchronously and in the same direction, thereby adjusting the height of the transverse adjustment assembly.

[0011] In a further solution, the lateral adjustment component includes a lateral bracket, a drive motor b is installed on the lateral bracket, the drive end of the drive motor b is connected to the adjustment screw b through a coupling, a drive slider is installed on the lateral bracket, the drive slider is threadedly connected to the adjustment screw b, and when the drive motor b is driven, the adjustment screw b is driven to rotate, and the rotation of the adjustment screw b drives the drive slider to slide laterally, and an angle adjustment component is installed on the drive slider.

[0012] In a further embodiment, the angle adjustment assembly includes a servo bracket, on which an X-axis adjustment servo and a Y-axis adjustment servo are provided, wherein the X-axis adjustment servo and the Y-axis adjustment servo are arranged vertically, the X-axis adjustment servo is vertically installed, and an arc-shaped bracket a is installed on its driving end, and the Y-axis adjustment servo is horizontally installed, and an arc-shaped bracket b is installed on its driving end;

[0013] The arc-shaped bracket a and the arc-shaped bracket b are cross-mounted in a stacked state, and an inner sphere is installed in the inner space of the stacked cross-section. A horizontal slide groove is provided on the horizontal axis spherical surface of the inner sphere, and a vertical slide groove is provided on the vertical axis spherical surface of the inner sphere, wherein a slider a is installed in the vertical slide groove, and one end of the slider a is mounted on the steering gear bracket;

[0014] The middle part of the arc-shaped bracket a and the arc-shaped bracket b are both provided with an inner slideway, the intersection of the two inner slideways is the driving point, the slider b runs through the driving point, and one end of the slider b can be slidably installed in the horizontal plane slide groove, and the other end is connected to the camera mounting seat, and the endoscope lens is fixedly installed in the camera mounting seat.

[0015] In a further solution, the travel guide rails are parallel guide rails installed at the bottom of the test box. A drive motor c is installed on the travel guide rails. The drive end of the drive motor c is connected to the adjusting screw c through a coupling. The two adjusting screws c are both screwed with sliding blocks. The vertical bracket is installed on the sliding block. The two drive motors c are driven synchronously and in the same direction, and the two adjusting screws c rotate synchronously and in the same direction, thereby adjusting the front and rear positions of the vertical bracket.

[0016] In a further solution, the integrating sphere light source is two hemispheres assembled into a spherical body, and a flange ring is provided at the mounting edge of the spherical body. Box fixing holes are evenly distributed on the flange ring. The box fixing holes are penetrated by fastening bolts to fix the spherical body on the test box.

[0017] In a further solution, the inner wall of the sphere is coated with diffuse reflection material, and a light source entrance and a light source exit are respectively provided at both ends of the central axis of the sphere. A plurality of detector ports for measuring the light signal after the light source is uniformly scattered are distributed on the outer end surface of the integrating sphere facing the sphere. A photoelectric sensor is installed inside the detector port, and the light source entrance is connected to the light source. Baffles are installed at the position of the light source exit and the position of the detector port to prevent the light source from being directly emitted from the light source exit or directly irradiating the photoelectric sensor, ensuring that the light is evenly mixed after multiple reflections, and the light source outlet projects the integrated luminous flux scattered in the sphere toward the target direction.

[0018] In a further solution, a target test position is provided at the position of the light source outlet, a notch is provided on the target test position, a rubber clip is provided inside the notch, and the target sample can be clamped in the rubber clip.

[0019] In a further embodiment, the test box is provided with an openable drawer door.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses an integrating sphere light source to provide a stable and uniform light source for the endoscope lens, places the target sample at the light source port, and adjusts the light source data test by adjusting and controlling the light source;

[0022] By setting up a camera module and utilizing the settings of a height adjustment component, a lateral adjustment component, an angle adjustment component, and a travel guide rail, the endoscope can be quickly adjusted to the test position relative to the target. Specifically, the test height, test lateral position, test angle, test distance and other data of the endoscope relative to the target can be quickly adjusted. Compared with the existing manual testing method, this is more stable, efficient, and reduces errors.

[0023] The present invention can quickly verify the optical design parameters of endoscopes (such as field of view angle and distortion correction), shortening the product iteration cycle;

[0024] Fully automated testing meets the efficient quality inspection needs of mass production, ensuring that each device meets clinical performance requirements;

[0025] Accurately locate faulty modules (such as lighting fiber attenuation and lens contamination) through historical data comparison;

[0026] By combining the high-uniformity illumination of the integrating sphere light source with the intelligent position calibration technology of image recognition, the fully automated, high-precision and multi-functional integration of endoscope optical performance testing is achieved, solving the pain points of traditional methods such as low efficiency, large errors and complex operation, and significantly improving the quality control level and market competitiveness of medical endoscope products. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 This is a schematic diagram of the camera module structure of the present invention.

[0030] Figure 3 It is a schematic diagram of the structure of the height adjustment component and the lateral adjustment component of the present invention.

[0031] Figure 4 This is a structural diagram of the angle adjustment component of the present invention.

[0032] Figure 5 This is a schematic diagram of the disassembled structure of the angle adjustment component of the present invention.

[0033] Figure 6 Schematic diagram of the arc-shaped bracket and the driving point position of the arc-shaped bracket of the present invention.

[0034] Figure 7 This is a schematic diagram of the light source entrance side of the spherical body of the present invention.

[0035] Figure 8 This is a schematic diagram of the interior of the light source entrance side of the spherical body of the present invention.

[0036] Figure 9 This is a schematic diagram of the light source outlet side of the spherical body of the present invention.

[0037] Figure 10 Schematic diagram of the target test site of the present invention.

[0038] Figure 11 This is the software interface 1 for testing static tolerance, signal-to-noise ratio, and RGB linear fit parameters of the present invention.

[0039] Figure 12 This is the second software interface for testing static tolerance, signal-to-noise ratio, and RGB linear fit parameters of the present invention.

[0040] Figure 13 This is the spatial frequency response test software interface of the present invention.

[0041] Figure 14 This is the target star test card of the present invention. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] See also Figure 1-10 The present invention provides a technical solution: an endoscope testing system, comprising an integrating sphere light source 2 and a camera module 3, wherein the integrating sphere light source 2 is installed on one side of a test box 1, and the test box 1 is provided with an openable drawer door.

[0044] The camera module 3 is installed inside the test box 1. The light outlet of the integrating sphere light source 2 is provided with a target test position 201. The integrating sphere light source 2 provides stable illumination for the target on the target test position 201. It is mainly responsible for outputting scattered light to illuminate the test target. The endoscope lens 301 on the camera module 3 captures the real-time image of the target, analyzes the identified target image, and calculates the corresponding optical performance.

[0045] Among them, the camera module 3 can dynamically calibrate the position of the endoscope lens 301, control the position movement / rotation of the endoscope lens 301, and achieve sub-millimeter alignment precision adjustment.

[0046] In a specific solution, the camera module 3 includes a height adjustment component 302, a lateral adjustment component 303, an angle adjustment component 304, a travel guide rail 305 and a test camera mounting position 306. The endoscope lens 301 is fixedly installed on the test camera mounting position 306. The height adjustment component 302 is used to adjust the height position of the endoscope lens 301, the lateral adjustment component 303 is used to adjust the lateral position of the endoscope lens 301, the angle adjustment component 304 is used to adjust the rotation angle of the endoscope lens 301, and the travel guide rail 305 is used to adjust the distance between the endoscope lens 301 and the target test position. Through the above-mentioned height adjustment component 302, lateral adjustment component 303, angle adjustment component 304 and travel guide rail 305, the height, lateral position and test angle of the endoscope lens 301 can be adjusted.

[0047] It also includes a main control board, which mainly controls the movement of the servo motor and the stepper motor to adjust the position of the endoscope being tested.

[0048] The height adjustment component 302 is a vertical bracket 302b arranged vertically and in parallel, and an adjusting screw a302a is installed in the vertical bracket 302b. The end of the adjusting screw a302a is rotatably installed on the vertical bracket 302b, and a driving motor a302c is installed on the vertical bracket 302b. The driving end of the driving motor a302c is connected to the adjusting screw a302a through a coupling. The two adjusting screws a302a are both screwed with a horizontal bracket 303a of the horizontal adjustment component 303. The horizontal bracket 303a is arranged in parallel on the two adjusting screws a302a. The two driving motors a302c are driven synchronously and in the same direction, and the two adjusting screws a302a rotate synchronously and in the same direction, thereby adjusting the height of the horizontal adjustment component 303.

[0049] The lateral adjustment assembly 303 includes a lateral bracket 303a, a driving motor b303b is installed on the lateral bracket 303a, the driving end of the driving motor b303b is connected to the adjusting screw b303c through a coupling, a driving slider 303d is installed on the lateral bracket 303a, the driving slider 303d is screwed to the adjusting screw b303c, when the driving motor b303b is driven, it drives the adjusting screw b303c to rotate, and the rotation of the adjusting screw b303c drives the driving slider 303d to slide laterally, and the driving slider 303d is installed on the driving slider 303d.

[0050] The angle adjustment assembly 304 includes a servo bracket 304a, on which an X-axis adjustment servo 304b and a Y-axis adjustment servo 304c are mounted. The X-axis adjustment servo 304b and the Y-axis adjustment servo 304c are arranged perpendicularly. The X-axis adjustment servo 304b is vertically mounted, and an arc-shaped bracket a 304d is mounted on its driving end. The Y-axis adjustment servo 304c is horizontally mounted, and an arc-shaped bracket b 304e is mounted on its driving end.

[0051] The arc-shaped bracket a304d and the arc-shaped bracket b304e are stacked and cross-mounted, and the inner sphere 304f is installed in the inner space of the stacked and cross-mounted bracket. The horizontal axis spherical surface of the inner sphere 304f is provided with a horizontal plane slide groove 304g, and the vertical axis spherical surface of the inner sphere 304f is provided with a vertical plane slide groove 304h, wherein the vertical plane slide groove 304h is installed in the slider a304i, and one end of the slider a304i ​​is mounted on the steering gear bracket 304a.

[0052] An inner slide is provided in the middle of the arc-shaped bracket a304d and the arc-shaped bracket b304e. The intersection of the two inner slides is the driving point 304j. The slider b304k runs through the driving point 304j, and one end of the slider b304k can be slidably installed in the horizontal plane slide groove 304g, and the other end is connected to the camera mounting seat 304l. The endoscope lens 301 is fixedly installed in the camera mounting seat 304l.

[0053] The travel guide rail 305 is a guide rail arranged in parallel and installed at the bottom of the test box 1. The drive motor c305a is installed on the travel guide rail 305. The driving end of the drive motor c305a is connected to the adjusting screw c305b through a coupling. The two adjusting screws c305b are both screwed with sliding blocks. The vertical bracket 302b is installed on the sliding block. The two drive motors c305a are driven synchronously in the same direction, and the two adjusting screws c305b rotate synchronously in the same direction, thereby adjusting the front and rear positions of the vertical bracket 302b.

[0054] The integrating sphere light source 2 is a spherical body 202 assembled from two hemispheres. A flange ring 203 is provided at the mounting edge of the spherical body 202. Box fixing holes 204 are evenly distributed on the flange ring 203. The box fixing holes 204 are penetrated by fastening bolts to fix the spherical body 202 on the test box 1.

[0055] The inner wall of the spherical body 202 is coated with a diffuse reflection material, and a light source entrance 205 and a light source exit 206 are respectively provided at both ends of the central axis of the spherical body 202. A plurality of detector openings 207 for measuring the light signal after uniform scattering of the light source are evenly distributed on the outer end surface of the integrating sphere facing the spherical surface. A photoelectric sensor is installed inside the detector opening 207. The light source entrance 205 is connected to the light source. Baffles 208 are installed at the position of the light source exit 206 and the position of the detector opening 207 to prevent the light source from being directly emitted from the light source exit 206 or directly irradiating the photoelectric sensor, thereby ensuring that the light is evenly mixed after multiple reflections.

[0056] It also includes a dimming control panel, which is mainly responsible for adjusting the brightness of light source A and light source B, and providing different light source modes. Light source A is the input light source of the spherical body 202, which is introduced through the light source inlet 205. Light source B is provided from the inside of the test box 1. The light source outlet 206 projects the integrated luminous flux scattered in the spherical body 202 toward the target direction. The color temperature and brightness of the light source inside the spherical body 202 are adjustable, and the uniform surface light source is connected to the control unit, so that the control unit controls the switching and adjustment of the color temperature and brightness of the uniform surface light source.

[0057] A target test position 201 is provided at the position of the light source outlet 206. A notch 209 is provided on the target test position 201. A rubber clip is provided inside the notch 209. The target sample can be stuck in the rubber clip. The targets include switchable field of view angle targets, distortion targets, color reproduction test targets, entrance pupil field of view angle test targets, Siemens sine star test targets, adjustable grayscale test targets, etc. The pattern of the target to be tested is obtained by the endoscope to be tested, and the corresponding parameters are obtained through intelligent algorithm analysis. For example, the imaging measurement device shoots the target for field of view angle measurement, and through image recognition technology, it identifies the maximum field of view area displayed in the image, thereby obtaining the field of view angle of the endoscope to be tested. The switching of different test items is achieved through the automatic and precise switching of the test targets.

[0058] The endoscope is aimed at the target, and the camera of the endoscope under test captures the target pattern. Intelligent algorithms analyze and calculate optical parameters such as field of view, viewing angle, distortion, and color reproduction. This system can measure parameters such as field of view, viewing angle, spatial rate response, signal-to-noise ratio, brightness response characteristics, static image tolerance, and illumination efficiency.

[0059] Make a two-dimensional brightness evaluation of the target to be measured, and then calculate and analyze it; when measuring items such as brightness response characteristics, static image tolerance and noise, the photoelectric sensor provides measurement values ​​of background brightness and grayscale block brightness; when measuring the light effect of the lighting mirror body, the proportional relationship between brightness and illuminance is used to obtain the illuminance ratio between the center of the target field of view and the edge of the field of view, and then calculate the light effect value of the lighting mirror body of the endoscope body.

[0060] Depend on Figure 11and Figure 12 As shown in the figure, according to the YY / T 1587 standard, the static tolerance, signal-to-noise ratio, and RGB linear fit parameters are tested.

[0061] The specific testing process is:

[0062] Initial setup:

[0063] After the endoscope is installed, it is completed with the assistance of sensors and images;

[0064] Platform zero calibration;

[0065] Lens vertical calibration (stepper motor supports automatic adjustment);

[0066] Automatic testing:

[0067] Start automatic testing after adjusting to the working distance;

[0068] The system automatically executes:

[0069] ① Adjust the brightness gradient of light source A through the dimming control panel

[0070] ② Collect brightness data of the white frame area

[0071] ③Record and calculate:

[0072] Luminance component Y value

[0073] Signal-to-noise ratio data

[0074] RGB three-channel values

[0075] ④ Dynamic detection critical value:

[0076] Scan from low to high brightness

[0077] Determine cutoff / saturation threshold

[0078] ⑤Data analysis:

[0079] Calculated according to 1587 specification:

[0080] Static tolerance;

[0081] signal-to-noise ratio;

[0082] RGB linear fitting;

[0083] Generate a corresponding curve chart.

[0084] Depend on Figure 13 and Figure 14 As shown, the spatial frequency response test.

[0085] Steps:

[0086] Switch star test card (72 / 144 specifications);

[0087] Collect test images;

[0088] Perform a frequency response calculation:

[0089] Focus on analyzing the response values ​​in the 30% and 50% areas;

[0090] Generate a complete response curve.

[0091] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0092] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Endoscope testing system, characterized in that, The invention comprises an integrating sphere light source (2) and a camera module (3), wherein the integrating sphere light source (2) is installed at a side position of a test box (1), and the camera module (3) is installed inside the test box (1). A target test position (201) is provided at a light outlet of the integrating sphere light source (2), and the integrating sphere light source (2) provides stable lighting for a target on the target test position (201). The endoscope lens (301) on the camera module (3) captures a real-time image of the target, analyzes the identified target image, and calculates and obtains corresponding optical performance. The camera module (3) can dynamically calibrate the position of the endoscope lens (301), control the position movement / rotation of the endoscope lens (301), and achieve sub-millimeter alignment precision adjustment.

2. The endoscope testing system according to claim 1, wherein: The camera module (3) comprises a height adjustment component (302), a lateral adjustment component (303), an angle adjustment component (304), a travel guide rail (305) and a test camera mounting position (306); an endoscope lens (301) is fixedly mounted on the test camera mounting position (306); the height adjustment component (302) is used to adjust the height position of the endoscope lens (301); the lateral adjustment component (303) is used to adjust the lateral position of the endoscope lens (301); the angle adjustment component (304) is used to adjust the rotation angle of the endoscope lens (301); and the travel guide rail (305) is used to adjust the distance between the endoscope lens (301) and the target test position.

3. The endoscope testing system according to claim 2, wherein: The height adjustment component (302) is a vertical bracket (302b) arranged vertically and in parallel. An adjustment screw a (302a) is installed in the vertical bracket (302b). The end of the adjustment screw a (302a) is rotatably installed on the vertical bracket (302b). A driving motor a (302c) is installed on the vertical bracket (302b). The driving end of the driving motor a (302c) is connected to the adjustment screw a (302a) through a coupling. The two adjustment screws a (302a) are both screwed to the transverse bracket (303a) of the transverse adjustment component (303). The transverse bracket (303a) is arranged in parallel on the two adjustment screws a (302a). The two driving motors a (302c) are driven synchronously and in the same direction. The two adjustment screws a (302a) rotate synchronously and in the same direction, thereby adjusting the height of the transverse adjustment component (303).

4. The endoscope testing system according to claim 2, wherein: The transverse adjustment assembly (303) comprises a transverse bracket (303a), a driving motor b (303b) is mounted on the transverse bracket (303a), a driving end of the driving motor b (303b) is connected to an adjusting screw b (303c) via a coupling, a driving slider (303d) is mounted on the transverse bracket (303a), the driving slider (303d) is screwed to the adjusting screw b (303c), and when the driving motor b (303b) is driven, the adjusting screw b (303c) is driven to rotate, and the rotation of the adjusting screw b (303c) drives the driving slider (303d) to slide transversely, and an angle adjustment assembly (304) is mounted on the driving slider (303d).

5. The endoscope testing system according to claim 2, wherein: The angle adjustment assembly (304) includes a steering gear bracket (304a), and an X-axis adjustment steering gear (304b) and a Y-axis adjustment steering gear (304c) are provided on the steering gear bracket (304a). The X-axis adjustment steering gear (304b) and the Y-axis adjustment steering gear (304c) are vertically arranged. The X-axis adjustment steering gear (304b) is vertically installed, and an arc-shaped bracket a (304d) is installed on its driving end. The Y-axis adjustment steering gear (304c) is horizontally installed, and an arc-shaped bracket b (304e) is installed on its driving end. The arc-shaped bracket a (304d) and the arc-shaped bracket b (304e) are cross-mounted in a stacked state, and an inner sphere (304f) is installed in the inner space of the stacked cross-mounted state. A horizontal plane slide groove (304g) is provided on the horizontal axis spherical surface of the inner sphere (304f), and a vertical plane slide groove (304h) is provided on the vertical axis spherical surface of the inner sphere (304f). A slider a (304i) is installed in the vertical plane slide groove (304h), and one end of the slider a (304i) is installed on the steering gear bracket (304a); The middle parts of the arc-shaped bracket a (304d) and the arc-shaped bracket b (304e) are both provided with inner slideways, the intersection of the two inner slideways is a driving point (304j), the slider b (304k) runs through the driving point (304j), and one end of the slider b (304k) can be slidably installed in the horizontal plane slide groove (304g), and the other end is connected to the camera mounting seat (304l), and the endoscope lens (301) is fixedly installed in the camera mounting seat (304l).

6. The endoscope testing system according to claim 2, wherein: The travel guide rail (305) is a guide rail arranged in parallel and installed at the bottom of the test box (1). A driving motor c (305a) is installed on the travel guide rail (305). The driving end of the driving motor c (305a) is connected to the adjusting screw c (305b) through a coupling. The two adjusting screws c (305b) are both screwed and installed with a sliding block. The vertical bracket (302b) is installed on the sliding block. The two driving motors c (305a) are driven synchronously in the same direction, and the two adjusting screws c (305b) rotate synchronously in the same direction, thereby adjusting the front and rear positions of the vertical bracket (302b).

7. The endoscope testing system according to claim 1, wherein: The integrating sphere light source (2) is a spherical body (202) assembled from two hemispheres. A flange ring (203) is provided at the installation edge of the spherical body (202). Box fixing holes (204) are evenly distributed on the flange ring (203). The spherical body (202) is fixedly mounted on the test box (1) by fastening bolts passing through the box fixing holes (204).

8. The endoscope testing system according to claim 7, characterized in that: The inner wall of the spherical body (202) is coated with a diffuse reflection material. A light source entrance (205) and a light source exit (206) are respectively provided at both ends of the spherical center axis of the spherical body (202). A plurality of detector openings (207) for measuring light signals uniformly scattered by the light source are evenly distributed on the outer end surface of the integrating sphere facing the spherical surface. Photoelectric sensors are installed inside the detector openings (207). The light source entrance (205) is connected to the light source. Baffles (208) are installed at the positions of the light source exit (206) and the detector openings (207) to prevent the light source from being directly emitted from the light source exit (206) or directly irradiating the photoelectric sensor, thereby ensuring that the light is evenly mixed after multiple reflections. The light source exit (206) projects the integrated light flux scattered in the spherical body (202) toward the target direction.

9. The endoscope testing system according to claim 8, characterized in that: A target test position (201) is provided at the position of the light source outlet (206), a notch (209) is provided on the target test position (201), a rubber clamp is provided inside the notch (209), and a target sample can be clamped in the rubber clamp.

10. The endoscope testing system according to claim 1, wherein: The test box (1) is provided with an openable drawer door.

Images