A device and method for sub-millimeter endoscope fiber arrangement quality detection

Abstract

The application discloses a device and method for submillimeter endoscope optical fiber arrangement quality detection, and belongs to the technical field of superfine endoscope control, and comprises a pipe catching part, a light intensity detection part, a light source output part, an industrial computer and a base; the pipe catching part is provided with a first motion mechanism and a pipe positioning support; the first motion mechanism can drive the pipe positioning support to move in multiple dimensions; the light source output part is provided with a second motion mechanism; the second motion mechanism can drive the output end of the light source output part to move in multiple dimensions; the output end of the light source output part is arranged opposite to the light intensity detection part; the pipe catching part, the light intensity detection part and the light source output part are connected with the industrial computer; the light intensity detection part and the light source output part are arranged on the base; the scheme can realize quantitative comprehensive judgment of multiple quality monitoring references, and can more scientifically and effectively evaluate the quality of internal optical fiber integration of an endoscope.

Description

Technical Field

[0001] This invention relates to the field of ultra-fine endoscope technology, and in particular to a device and method for detecting the fiber optic arrangement quality of sub-millimeter endoscopes. Background Technology

[0002] Currently, the illumination function of the endoscope's front probe is mainly achieved through two technical solutions: one is to install multiple LED illumination modules at the front end, and the other is to arrange fiber optic bundles inside the probe, with a light source connected to the rear end of the fiber optic bundles, transmitting the illumination light from the rear light source to the probe tip for illumination. For sub-millimeter-level endoscopes, due to the excessively large size requirements of LED illumination modules, only the fiber optic bundle solution can be used. Submillimeter endoscopes use fiber optic bundles for illumination. The working principle is to integrate multiple ultra-fine optical fibers inside the probe and use the light guiding function of the optical fibers to transmit the light energy from the back end of the probe to the front end of the probe, thereby realizing the illumination function of the front end area of ​​the probe. There is a lack of effective detection devices and methods for the quality of fiber optic arrangement inside existing ultra-fine endoscopes. The overall light output of the fiber can only be roughly judged by the light output from the end face. However, there is a lack of effective detection equipment and methods for the damage / leakage of individual fibers in the fiber bundle, the arrangement of fibers inside the probe, and the color change of the output light relative to the incident light. It is impossible to conduct multi-dimensional quantitative quality detection and evaluation of the integration quality of the fiber optics inside the endoscope, which is not conducive to improving the integration quality of the endoscope. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for detecting the quality of fiber optic cable arrangement in sub-millimeter endoscopes, addressing the aforementioned shortcomings. This solves the problem of the lack of effective detection devices and methods for the quality of fiber optic cable arrangement inside ultra-fine endoscopes. This solution enables quantitative comprehensive evaluation of multiple quality monitoring references, providing a more scientific and effective quality assessment of the fiber optic cable integration level inside endoscopes.

[0004] This invention is achieved through the following scheme: A device for inspecting the fiber optic cable arrangement quality of a submillimeter endoscope includes a fitting gripper, a light intensity detection unit, a light source output unit, an industrial control computer, and a base. The fitting gripper is equipped with a first motion mechanism and a fitting positioning bracket; the first motion mechanism can drive the fitting positioning bracket to perform multi-dimensional motion. The light source output unit is equipped with a second motion mechanism; the second motion mechanism can drive the output end of the light source output unit to perform multi-dimensional motion. The output end of the light source output unit is directly opposite the light intensity detection unit. The fitting gripper, light intensity detection unit, and light source output unit are all connected to the industrial control computer. The light intensity detection unit and the light source output unit are mounted on the base.

[0005] Based on the structure of the device for detecting the fiber optic arrangement quality of a submillimeter endoscope, the tube positioning bracket is provided with multiple two-point clamping points with different gaps; after the ultra-thin endoscope tube is clamped by the tube positioning bracket, the axis of the ultra-thin endoscope tube is parallel to the line connecting the light intensity detection unit and the light source output unit.

[0006] Based on the structure of the above-mentioned device for detecting the fiber optic arrangement quality of a submillimeter endoscope, the light intensity detection unit includes a fixed bracket and a light intensity sensor; the fixed bracket is mounted on a base; after the light intensity sensor is fixed by the fixed bracket, its receiving end face faces the output end of the light source output unit.

[0007] Based on the structure of the above-mentioned device for detecting the fiber optic arrangement quality of a submillimeter endoscope, the light source output section includes a motion support, a multi-dimensional attitude adjustment mechanism, and an array light source; a one-dimensional guide rail that cooperates with the motion support is provided on the base; the motion support is movably mounted on the one-dimensional guide rail, the multi-dimensional attitude adjustment mechanism is mounted on the motion support, and the array light source is mounted at the motion end of the multi-dimensional attitude adjustment mechanism.

[0008] This solution also discloses a method for detecting the fiber optic arrangement quality of submillimeter endoscopes, including the following steps: Step 1: Adjust the area array light source and light intensity sensor to align them; Step 2: Initialize and self-check the working status of the area array light source and light intensity sensor; Step 3: Set the spectral parameters and light intensity parameters of each pixel of the area array light source to fixed values, and install a matching filter assembly on the light intensity sensor according to the spectral range and light intensity parameters of the light source. Step 4: Each individual sensing unit of the light intensity sensor is corrected, and the same quantitative characterization data is generated for light sources with the same spectral parameters and light intensity parameters.

[0009] Step 5: readjust the multi-dimensional attitude adjustment mechanism again, aligning the area array light source and light intensity sensor according to pixel point 1-1 to 1-1, 1-2 to 1-2, ..., NN to NN; Adjust the one-dimensional guide rail of the base and move the motion bracket until the length of the middle area between the array light source and the light intensity sensor is greater than the length of the ultra-fine endoscope tube to be tested. Place the two-point clamping points of the tube positioning bracket with the corresponding size gap according to the diameter parameters of the ultra-thin endoscope tube; Step 6: Align the pixel positions of the array light source and light intensity sensor with the contours of both ends of the ultra-thin endoscope tube; calculate the angular offset of the probe relative to the central axis of the array light source and light intensity sensor; control the first motion mechanism to adjust the angle and posture of the ultra-thin endoscope tube according to the angular offset until the pixel positions corresponding to the contours of both ends are in one-to-one correspondence. Step 7: Calculate the positional offset of the optical fiber in the ultra-fine endoscope fitting, and statistically analyze the order of magnitude of the optical fiber offset according to different offsets to form quantitative statistical data. Step 8: Determine the quality status of the color gamut offset Δ of each optical fiber to form specific data on the color gamut status changes during the optical fiber transmission process.

[0010] Step two is as follows: turn on the area array light source and the light intensity sensor respectively, take the value obtained by the current light intensity sensor as the background light intensity noise, set the reading to zero, and adjust the pixels of each point of the area array light source through the industrial control computer, and turn each pixel on / off one by one according to the following line-by-line scanning method. 1-1, 1-2, 1-3..., 1-(N-1), 1-N; 2-1, 2-2, 2-3..., 2-(N-1), 2-N; ... N-1, N-2, N-3..., N-(N-1), NN; The multi-dimensional attitude adjustment mechanism is synchronously adjusted by reading the values ​​of each pixel of the light intensity sensor in sequence. The 1-1, 1-2...N-(N-1), NN of the array light source are aligned with the 1-1, 1-2...N-(N-1), NN of the light intensity sensor in sequence, so as to realize the pixel-level spatial pose alignment of the array light source and the light intensity sensor and complete the self-check of the initial working status of the array light source and the light intensity sensor.

[0011] Step four specifically involves: activating light emission from a specific point of the area array light source, setting the spectral and intensity parameters to fixed values, and then controlling the multi-dimensional attitude adjustment mechanism to sequentially align the intensity sensor using a pixel-level alignment method. 1-1, 1-2, 1-3..., 1-(N-1), 1-N; 2-1, 2-2, 2-3..., 2-(N-1), 2-N; ... N-1, N-2, N-3..., N-(N-1), NN; Each individual sensing unit aligns with the area array light source to emit light. The spectral parameters and light intensity parameters read by each sensing unit are acquired sequentially and averaged to obtain the average value of the reading parameters of N2 sensing points of the light intensity sensor. Based on this value, each sensing unit is corrected. After correction, each sensing point of the light intensity sensor generates the same quantitative characterization data for light sources with the same spectral parameters and light intensity parameters.

[0012] Step six is ​​as follows: Adjust the position parameters of the motion support on the one-dimensional guide rail of the base, and place the two end faces of the ultra-thin endoscope tube tightly against the array light source and the light intensity sensor respectively. Set the spectral parameters and light intensity parameters to fixed values, and turn on the array light source in sequence in the manner of 1-1, 1-2, 1-3..., N-(N-1), NN. Simultaneously read the light source at each point. Based on the different photosensitive values ​​of each point of the light intensity sensor array, identify the contours of the probe ends. Based on the pixel positions of the contours in the two aligned array light sources and light intensity sensors, calculate the angular offset of the probe relative to the central axis of the array light source and light intensity sensor. Based on the angular offset, control the motion mechanism to adjust the angle and posture of the ultra-thin endoscope tube until the pixel positions corresponding to the contours of the two ends correspond one-to-one.

[0013] Step seven specifically involves: developing a light intensity output program, sequentially activating each single-point light output location within the probe contour area, and obtaining the corresponding light output location based on the sensing point with a specific reading from the light intensity sensor, calculating the positional offset of the optical fiber within the ultra-fine endoscope tube; repeating the above operation to sequentially obtain the positional offset of each optical fiber; statistically analyzing the offset at different positions, and calculating the order-of-magnitude offset of the optical fiber at offsets of 100%, 90%, ... 20%, 10%, and 0%, forming quantitative statistical data to provide quantitative support data for judging the quality of optical fiber tube installation; The light source values ​​at the input end and the sensor values ​​at the output end of each optical fiber are read to obtain the light energy loss rate during the transmission process of each optical fiber. The number of optical fibers with light energy transmission rates of 100%, 90%, ... 20%, 10%, and 0% is counted to determine whether the optical fiber is intact and undamaged (100%), has slight light leakage from the fiber sidewall (0%~50%), has severe light leakage from the fiber sidewall (50%~10%), or has a broken fiber (0%). This generates quantitative statistical data to provide supporting data for quantitative judgment of the optical fiber's light energy transmission efficiency.

[0014] Step eight specifically involves: based on the spectral characteristics of the light source and the light guiding characteristics of the optical fiber for different wavelengths, installing a matching filter assembly on the light intensity sensor, reading the spectral data of each optical fiber at the input end and the sensor spectral data at the output end, and obtaining the spectral changes of each optical fiber during the transmission process; obtaining the offset of the output spectral coordinates relative to the input spectral coordinates, calculating the quantitative data of the color gamut offset Δ, and judging the quality status of the color gamut offset Δ of each optical fiber according to the evaluation criteria, forming specific data on the color gamut status changes during the optical fiber transmission process, and providing quantitative support data for the optical fiber adhesive drying process at the output end.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The device and detection method of this invention can achieve quantitative measurement of indicators such as the arrangement position, light transmission efficiency, and color gamut of each optical fiber in an ultra-fine endoscope. The resulting quantitative detection data can provide effective support for the assembly process and quality of the ultra-fine endoscope. Furthermore, to address the issue of optical fiber quality degradation within a certain range, the consistency of light output quality from each optical fiber can be restored through point-to-point matching correction between the ultra-fine endoscope light source and the optical fiber.

[0016] 2. This invention enables rapid detection of the internal fiber optic status of an ultra-fine endoscope by using a precisely calibrated array light source and light intensity sensor (pixel-level precise alignment of their positions, normalization calibration of the light intensity and color gamut coordinates of each pixel, etc.), combined with a designed mechanical motion mechanism and clamping structure.

[0017] 3. This invention achieves accurate positioning of ultra-fine pipe fittings by calculating the positional offset data of the occlusion shadow structure and then calculating the angular offset of the pipe fitting.

[0018] 4. This invention obtains the radial positional offset of each optical fiber inside the ultrafine endoscope during the tube insertion process by using a pixel-to-pixel detection method with a planar array light source and a light intensity sensor. It also obtains the light guide loss of each optical fiber and determines its current state (integrity, partial light leakage, breakage, etc.) by measuring the light intensity at the input and output ends of each fiber. Furthermore, by calibrating the color gamut of each pixel of the light source and detecting the color gamut parameters of the calibrated illumination light transmitted through the optical fiber at the output end, it obtains the color gamut offset information of each output point relative to the incident illumination light. This provides quantitative data support for the fiber adhesive drying process at the output end (drying temperature uniformity in each area, color change, etc.). 5. This invention addresses the quality degradation issues such as reduced light intensity and color changes at the optical fiber output surface. By compensatory matching and adjustment of the incident light intensity and color gamut parameters at corresponding points of the light source, the output light quality of the corresponding optical fiber can be guaranteed to meet preset requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram illustrating the principle of optical fiber position offset detection after tube insertion in this invention; Figure 3 This is a schematic diagram of the optical fiber guiding efficiency detection in this invention; Figure 4 This is a schematic diagram illustrating the color change of the emitted light caused by different drying states of the colloid at the light-emitting end face in this invention. Figure 5 This is a schematic diagram illustrating the probe pose detection principle in this invention; Reference numerals in the attached drawings: 1. Ultra-thin endoscope tube; 2. Tube positioning bracket; 3. First motion mechanism; 4. Base; 5. Fixing bracket; 6. Light intensity sensor; 7. Filter assembly; 8. Motion bracket; 9. Second motion mechanism; 10. Area array light source; 11. Industrial control computer. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a predetermined orientation, or be constructed and operated in a predetermined orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] Example 1 like Figure 1 As shown, the present invention provides a technical solution: A device for inspecting the fiber optic cable arrangement quality of a submillimeter endoscope includes a fitting gripper, a light intensity detection unit, a light source output unit, an industrial control computer 11, and a base 4. The fitting gripper is equipped with a first motion mechanism 3 and a fitting positioning bracket 2. The first motion mechanism 3 can drive the fitting positioning bracket 2 to perform multi-dimensional motion. The light source output unit is equipped with a second motion mechanism 9. The second motion mechanism 9 can drive the output end of the light source output unit to perform multi-dimensional motion. The output end of the light source output unit is directly opposite the light intensity detection unit. The fitting gripper, light intensity detection unit, and light source output unit are all connected to the industrial control computer 11. The light intensity detection unit and the light source output unit are mounted on the base 4.

[0025] Based on the above structure, the tube fitting 1 of the ultra-fine endoscope under test is grasped and moved by the fitting gripping part, so that the ultra-fine endoscope fitting 1 can be tested with the light intensity detection part and the light source output part more accurately and quickly; similarly, the second motion mechanism 9 can be set to facilitate the adjustment of the light source output part; this solution can realize the quantitative measurement of the arrangement position of each fiber of the ultra-fine endoscope, light energy transmission efficiency, light color gamut and other indicators, and the resulting quantitative test data can provide effective support for the assembly process and assembly quality of the ultra-fine endoscope; at the same time, in response to the fiber quality degradation problem within a certain range, the consistency of the light output quality of each fiber can be restored by the point-to-point matching correction between the ultra-fine endoscope light source and the fiber.

[0026] In this solution, the ultra-thin endoscope tube 1 is a long and thin tube with a hollow interior and multiple optical fibers integrated to transmit illumination light from one side of the tube to the other.

[0027] As an example, the tube positioning bracket 2 is provided with multiple two-point clamping points with different gaps; used to clamp ultra-fine endoscope tubes 1 of different diameters, making the application range of this solution wider. After the ultra-fine endoscope tube 1 is clamped by the tube positioning bracket 2, the axis of the ultra-fine endoscope tube 1 is parallel to the line connecting the light intensity detection part and the light source output part.

[0028] Based on the above structure, the ultra-thin endoscope tube 1 installed on the tube positioning bracket 2 is pushed to the middle area between the light intensity detection section and the light source output section by the first motion mechanism 3. The first motion mechanism 3 has the function of adjusting the posture of the ultra-thin endoscope tube 1.

[0029] As an example, the light intensity detection unit may include a fixing bracket 5 and a light intensity sensor 6; the fixing bracket 5 is disposed on the base 4; after the light intensity sensor 6 is fixed by the fixing bracket 5, its receiving end face faces the output end of the light source output unit; the light intensity sensor 6 is a CMOS sensor without a filter, and can be matched with different types of sensors such as silicon-based and gallium-based according to the range of the light guiding spectrum. The pixel size matches the area size of 1×1, 2×2, and 3×3 pixels of the area array light source 10; A filter assembly 7 can also be installed inside the light intensity detection unit; the filter assembly 7 is matched with the light intensity sensor 6; different functions of filters, such as Bayer-style filters, can be removed or installed on the bracket of the filter assembly 7 according to the application scenario.

[0030] As an example, the light source output section may include a motion support 8, a multi-dimensional attitude adjustment mechanism, and an area array light source 10; a one-dimensional guide rail that cooperates with the motion support 8 is provided on the base 4; the motion support 8 is movably mounted on the one-dimensional guide rail, the multi-dimensional attitude adjustment mechanism is mounted on the motion support 8, and the area array light source 10 is mounted on the motion end of the multi-dimensional attitude adjustment mechanism. The area array light source 10 specifically adopts mini-LED, micro-LED, OLED, or other area array light sources 10. The size of a single pixel light source, or the area size of 2×2 or 3×3, matches the size of a single photosensitive pixel of the light intensity sensor 6.

[0031] The industrial control computer 11 is connected to the first motion mechanism 3, the light intensity sensor 6, the motion support 8, the multi-dimensional attitude adjustment mechanism, and the area array light source 10 through control cables, so as to realize the adjustment and control of various functions.

[0032] Example 2 like Figures 2-5 As shown, the present invention provides a technical solution: A method for inspecting the fiber optic cable arrangement quality in submillimeter endoscopes, specifically including the following steps: Step 1: Adjust the area array light source 10 and the light intensity sensor 6 to align them; Specifically, in a dark room, the device is used by adjusting the one-dimensional guide rail of the base 4 and moving the motion support 8 until the area array light source 10 installed thereon is aligned with the light intensity sensor 6 on the fixed support 5. Step 2: Initialize and self-check the working status of the area array light source 10 and the light intensity sensor 6; Specifically, the area array light source 10 and the light intensity sensor 6 are turned on respectively. The value obtained by the light intensity sensor 6 is used as the background light intensity noise. The reading is set to zero. The industrial control computer 11 adjusts the pixels of each point of the area array light source 10 and turns each pixel on / off one by one according to the following line-by-line scanning method. 1-1, 1-2, 1-3..., 1-(N-1), 1-N; 2-1, 2-2, 2-3..., 2-(N-1), 2-N; ... N-1, N-2, N-3..., N-(N-1), NN; The values ​​of each light intensity sensor pixel of the light intensity sensor 6 are read sequentially (at any given moment, a specific photosensitive pixel should have a value, while the others should be zero). The multi-dimensional attitude adjustment mechanism is adjusted synchronously, and the 1-1, 1-2...N-(N-1), NN of the array light source 10 are aligned with the 1-1, 1-2...N-(N-1), NN of the light intensity sensor 6 in sequence, so as to achieve pixel-level spatial pose alignment between the array light source 10 and the light intensity sensor 6 and complete the self-check of the initial working state of the array light source 10 and the light intensity sensor 6.

[0033] Step 3: Set the spectral parameters and light intensity parameters of each pixel of the area array light source 10 to fixed values, and install the matching filter assembly 7 on the light intensity sensor 6 according to the spectral range and light intensity parameters of the light source.

[0034] Step 4: Each individual sensing unit of the light intensity sensor 6 is corrected, and the same quantitative characterization data is generated for light sources with the same spectral parameters and light intensity parameters.

[0035] Specifically, turn on the light output at a certain point of the array light source 10, set the spectral parameters and light intensity parameters to fixed values ​​(parameter 1), and then control the multi-dimensional attitude adjustment mechanism to align the light intensity sensor 6 in a pixel-level alignment manner. 1-1, 1-2, 1-3..., 1-(N-1), 1-N; 2-1, 2-2, 2-3..., 2-(N-1), 2-N; ... N-1, N-2, N-3..., N-(N-1), NN; Each individual sensing unit aligns with the area array light source 10 to emit light, and sequentially acquires the spectral parameters and light intensity parameters read by each sensing unit and performs averaging processing to obtain the average value of the parameters read by the N2 sensing points of the light intensity sensor 6 (average of spectral parameters and light intensity parameters, parameter 2). Based on this value, each sensing unit is corrected. After correction, each sensing point of the light intensity sensor 6 generates the same quantitative characterization data for light sources with the same spectral parameters and light intensity parameters. Step 5: Adjust the multi-dimensional attitude adjustment mechanism again to align the area array light source 10 and the light intensity sensor 6 according to pixel points 1-1 to 1-1, 1-2 to 1-2, ..., NN to NN; Adjust the one-dimensional guide rail of the base 4 and move the motion bracket 8 until the length of the middle area between the array light source 10 and the light intensity sensor 6 is greater than the length of the ultra-fine endoscope tube 1 to be tested. According to its own diameter parameters, the ultra-thin endoscope tube 1 is placed at two-point clamping points corresponding to the size gap of the tube positioning bracket 2. Step 6: Based on the pixel positions of the two end contours of the ultra-thin endoscope tube 1 aligned with the array light source 10 and the light intensity sensor 6, calculate the angular offset of the probe relative to the central axis of the array light source 10 and the light intensity sensor 6; control the first motion mechanism 3 to adjust the angle and posture of the ultra-thin endoscope tube 1 according to the angular offset until the pixel positions corresponding to the two end contours are in one-to-one correspondence. Specifically, the position parameters of the motion support 8 on the one-dimensional guide rail of the base 4 are adjusted, and the two end faces of the ultra-thin endoscope tube 1 are respectively placed tightly against the array light source 10 and the light intensity sensor 6. The spectral parameters and light intensity parameters are set to fixed values ​​(parameter 1). The array light source 10 is turned on sequentially in the manner of 1-1, 1-2, 1-3..., N-(N-1), NN. The photosensitive values ​​of each point of the array light intensity sensor 6 are read synchronously when the light source is turned on, according to the different photosensitive values ​​of each point (the photosensitive value of the area where the wall thickness of the ultra-thin endoscope tube 1 blocks the light is 0). The probe's two-sided end contours are identified. Based on the pixel positions of the contours in the two aligned array light sources 10 and light intensity sensor 6, the angular offset of the probe relative to the central axis of the array light source 10 and light intensity sensor 6 is calculated. Based on the angular offset, the motion mechanism is controlled to adjust the angle and posture of the ultra-fine endoscope tube 1 until the pixel positions corresponding to the two-sided end contours correspond one-to-one (the light intensity value at the light input end is 100%, the sensor value at the light output end is 0%, and the pixel position information of the two is consistent, for example, the center coordinates of the two shadow circular contours are consistent).

[0036] Step 7: Calculate the positional offset of the optical fiber in the ultra-fine endoscope tube 1, and statistically analyze the order of magnitude of the optical fiber offset according to different offsets to form quantitative statistical data. Specifically, a light intensity emission program is developed to sequentially activate each single-point light emission location within the probe contour area. The corresponding light emission location is obtained based on the sensing point with a specific reading on the light intensity sensor 6. The positional offset of the optical fiber within the ultra-fine endoscope tube 1 is then calculated. This process is repeated to obtain the positional offset of each optical fiber. The offsets at different positions are statistically analyzed (the maximum offset is at the symmetrical point position, corresponding to the inner diameter of the tube). The offset magnitudes are then calculated at 100%, 90%, ..., 20%, 10%, and 0%, forming quantitative statistical data to provide supporting data for quantitatively judging the quality of the optical fiber placement within the tube. The light source values ​​at the input end and the sensor values ​​at the output end of each optical fiber are read to obtain the light energy loss rate during the transmission process of each optical fiber. The number of optical fibers with light energy transmission rates of 100%, 90%, ... 20%, 10%, and 0% is counted to determine whether the fiber is intact and undamaged (corresponding to 100%), has slight light leakage from the fiber sidewall (90%~50%), has severe light leakage from the fiber sidewall (50%~10%), or has a broken fiber (0%). This generates quantitative statistical data to provide supporting data for quantitative judgment of the optical fiber's light energy transmission efficiency. Step 8: Determine the quality status of the color gamut offset Δ of each optical fiber to form specific data on the color gamut status changes during the optical fiber transmission process. Specifically, based on the spectral characteristics of the light source and the light guiding characteristics of the optical fiber for different wavelengths, a matching filter assembly 7 is installed on the light intensity sensor 6. The spectral data of each optical fiber at the input end and the sensor spectral data at the output end are read to obtain the spectral changes of each optical fiber during transmission. The offset of the output spectral coordinates relative to the input spectral coordinates is obtained, and the quantitative data of the color gamut offset Δ is calculated. According to relevant evaluation criteria, the quality status of the color gamut offset Δ of each optical fiber is judged, forming specific data on the color gamut state changes during optical fiber transmission. This provides quantitative support data for the optical fiber adhesive drying process at the output end.

[0037] For ultra-fine endoscopes where the internal optical fibers have been found to have certain quality degradation issues but still need to be used, the output light quality of each light source at the input end can be adjusted according to the quality status of each optical fiber. (For example, if the corresponding optical fiber has a 30% energy loss, the light field energy of the light source at the corresponding point is increased by 30%; if there is a certain degree of color drift caused by excessive drying of the colloid at the output end of the optical fiber, the output light color of the light source at the corresponding point is changed according to the color fusion method of color gamut coordinates, so that the output light color + the color change caused by the excessive drying area = normal output light color.)

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting the fiber optic arrangement quality of submillimeter endoscopes, characterized in that: It includes a pipe gripping part, a light intensity detection part, a light source output part, an industrial control computer (11), and a base (4); the pipe gripping part is provided with a first motion mechanism (3) and a pipe positioning bracket (2), the first motion mechanism (3) can drive the pipe positioning bracket (2) to perform multi-dimensional motion; the light source output part is provided with a second motion mechanism (9); the second motion mechanism (9) can drive the output end of the light source output part to perform multi-dimensional motion; the output end of the light source output part is directly opposite to the light intensity detection part, and the pipe gripping part, the light intensity detection part, and the light source output part are all connected to the industrial control computer (11); the light intensity detection part and the light source output part are set on the base (4).

2. The device for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 1, characterized in that: The tube positioning bracket (2) is provided with multiple two-point clamping points with different gaps; after the ultra-fine endoscope tube (1) is clamped by the tube positioning bracket (2), the axis of the ultra-fine endoscope tube (1) is parallel to the line connecting the light intensity detection part and the light source output part.

3. The device for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 2, characterized in that: The light intensity detection unit includes a fixed bracket (5) and a light intensity sensor (6); the fixed bracket (5) is set on the base (4); after the light intensity sensor (6) is fixed by the fixed bracket (5), its receiving end face is facing the output end of the light source output unit.

4. The device for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 3, characterized in that: The light source output section includes a motion bracket (8), a multi-dimensional attitude adjustment mechanism, and an array light source (10); a one-dimensional guide rail that cooperates with the motion bracket (8) is provided on the base (4); the motion bracket (8) is movably mounted on the one-dimensional guide rail, the multi-dimensional attitude adjustment mechanism is mounted on the motion bracket (8), and the array light source (10) is mounted on the motion end of the multi-dimensional attitude adjustment mechanism.

5. A method for inspecting the fiber optic arrangement quality of a submillimeter endoscope, based on the apparatus for inspecting the fiber optic arrangement quality of a submillimeter endoscope as described in any one of claims 1 to 4, characterized in that: Includes the following steps: Step 1: Adjust the area array light source (10) and the light intensity sensor (6) to align them; Step 2: Initialize the working status self-check of the area array light source (10) and light intensity sensor (6); Step 3: Set the spectral parameters and light intensity parameters of each pixel of the area array light source (10) to fixed values. According to the spectral range and light intensity parameters of the light source, install a matching filter assembly (7) on the light intensity sensor (6). Step 4: Each individual sensing unit of the light intensity sensor (6) is corrected, and the same quantitative characterization data is generated for light sources with the same spectral parameters and light intensity parameters; Step 5: Adjust the multi-dimensional attitude adjustment mechanism again to align the area array light source (10) and the light intensity sensor (6) according to pixel points 1-1 to 1-1, 1-2 to 1-2, ..., NN to NN; Adjust the one-dimensional guide rail of the base (4), and translate the motion bracket (8) until the length of the middle area between the array light source (10) and the light intensity sensor (6) is greater than the length of the ultra-fine endoscope tube (1) to be tested; Place the ultra-thin endoscope tube (1) according to its own tube diameter parameters, and place the tube positioning bracket (2) at the corresponding two-point clamping point with the corresponding size gap; Step 6: Based on the pixel positions of the two end contours of the ultra-fine endoscope tube (1) aligned with the array light source (10) and the light intensity sensor (6); calculate the angular offset of the probe relative to the central axis of the array light source (10) and the light intensity sensor (6); control the first motion mechanism (3) to adjust the angle and posture of the ultra-fine endoscope tube (1) according to the angular offset until the pixel positions corresponding to the two end contours are in one-to-one correspondence; Step 7: Calculate the positional offset of the optical fiber in the ultra-fine endoscope tube (1), and statistically analyze the order of magnitude of the optical fiber offset according to different offsets to form quantitative statistical data; Step 8: Determine the quality status of the color gamut offset Δ of each optical fiber to form specific data on the color gamut status changes during the optical fiber transmission process.

6. The method for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 5, characterized in that: Step 2 is as follows: turn on the array light source (10) and the light intensity sensor (6) respectively, take the value obtained by the current light intensity sensor (6) as the background light intensity noise, set the reading to zero, adjust the pixels of each point of the array light source (10) through the industrial control computer (11), and turn each pixel on / off one by one according to the following line-by-line scanning method; 1-1, 1-2, 1-3..., 1-(N-1), 1-N; 2-1, 2-2, 2-3..., 2-(N-1), 2-N; …… N-1, N-2, N-3..., N-(N-1), NN; The multi-dimensional attitude adjustment mechanism is synchronously adjusted by reading the values ​​of each pixel of the light intensity sensor (6) in sequence. The 1-1, 1-2...N-(N-1), NN of the array light source (10) are aligned with the 1-1, 1-2...N-(N-1), NN of the light intensity sensor (6) in sequence, so as to realize the pixel-level spatial pose alignment of the array light source (10) and the light intensity sensor (6) and complete the self-check of the initial working state of the array light source (10) and the light intensity sensor (6).

7. The method for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 5, characterized in that: Step four specifically involves: turning on the light output of a certain point of the array light source (10), setting the spectral parameters and light intensity parameters to fixed values, and then controlling the multi-dimensional attitude adjustment mechanism to sequentially align the light intensity sensor (6) according to the pixel-level alignment method. 1-1, 1-2, 1-3..., 1-(N-1), 1-N; 2-1, 2-2, 2-3..., 2-(N-1), 2-N; …… N-1, N-2, N-3..., N-(N-1), NN; Each individual sensing unit emits light in alignment with the array light source (10), and sequentially acquires the spectral parameters and light intensity parameters read by each sensing unit and performs averaging processing to obtain the average value of the reading parameters of the N2 sensing points of the light intensity sensor (6). Based on this value, each sensing unit is corrected. After correction, each sensing point of the light intensity sensor (6) generates the same quantitative characterization data for light sources with the same spectral parameters and light intensity parameters.

8. The method for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 5, characterized in that: Step six is ​​as follows: Adjust the position parameters of the one-dimensional guide rail of the motion support (8) on the base (4), and place the two end faces of the ultra-fine endoscope tube (1) close to the array light source (10) and the light intensity sensor (6) respectively. Set the spectral parameters and light intensity parameters to fixed values, and turn on the array light source (10) in sequence according to the order of 1-1, 1-2, 1-3..., N-(N-1), NN. Simultaneously read the light source at each point. Based on the different photosensitive values ​​of each point of the light intensity sensor (6), identify the contours of the probe ends. Based on the pixel positions of the contours in the two aligned array light sources (10) and light intensity sensors (6), calculate the angular offset of the probe relative to the central axis of the array light source (10) and light intensity sensor (6). Based on the angular offset, control the motion mechanism to adjust the angle and posture of the ultra-fine endoscope tube (1) until the pixel positions corresponding to the contours of the two ends correspond one-to-one.

9. The method for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 5, characterized in that: Step seven is as follows: compile a light intensity output program, sequentially activate each single light output point in the probe contour area, and obtain the corresponding light output point based on the sensing point with a specific reading on the light intensity sensor (6), and calculate the position offset of the optical fiber in the ultra-fine endoscope tube (1); repeat the above operation to obtain the position offset of each optical fiber in turn; count the offset of different positions, and count the offset of the optical fiber at different offset levels of 100%, 90%, ... 20%, 10%, 0%, to form quantitative statistical data, providing quantitative support data for the quality of optical fiber tube arrangement; The light source values ​​at the input end and the sensor values ​​at the output end of each optical fiber are read to obtain the light energy loss rate during the transmission process of each optical fiber. The number of optical fibers with light energy transmission rates of 100%, 90%, ... 20%, 10%, and 0% is counted to determine whether the optical fiber is intact and undamaged (100%), has slight light leakage from the fiber sidewall (0%~50%), has severe light leakage from the fiber sidewall (50%~10%), or has a broken fiber (0%). This generates quantitative statistical data to provide supporting data for quantitative judgment of the optical fiber's light energy transmission efficiency.

10. The method for detecting the fiber optic arrangement quality of a submillimeter endoscope according to claim 5, characterized in that: Step eight is as follows: Based on the spectral characteristics of the light source and the light guiding characteristics of the optical fiber for different wavelengths, a matching filter assembly (7) is installed on the light intensity sensor (6). The spectral data of each optical fiber at the input end and the sensor spectral data at the output end are read to obtain the spectral changes of each optical fiber during the transmission process. The offset of the output spectral coordinates relative to the input spectral coordinates is obtained, and the quantitative data of the color gamut offset Δ is calculated. According to the evaluation criteria, the quality status of the color gamut offset Δ of each optical fiber is judged to form specific data on the color gamut status changes during the optical fiber transmission process, providing quantitative judgment support data for the optical fiber adhesive drying process at the output end.

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