An industrial endoscope packaging box

Abstract

The present application relates to a kind of industrial endoscope packaging box for performance detection, including square packaging box body, at least one inner surface of the box cover, box bottom, side wall and dust wing of packaging box body is printed with target pattern for detecting the performance of industrial endoscope, target pattern includes one or more of color target pattern for color detection, resolution target pattern for resolution detection, depth of field target pattern for depth of field test, distortion target pattern for testing the geometric distortion of imaging system and defect simulation pattern for simulating defect;Any one side wall of packaging box body is provided with side wall through hole in the center.The present application makes the packaging box can be used as the target of industrial endoscope performance detection in addition to packaging, facilitates the quick detection verification of user to industrial endoscope.

Description

Technical Field

[0001] This invention relates to the field of endoscope technology, and in particular to an industrial endoscope packaging box that can be used for performance testing. Background Technology

[0002] Industrial endoscopes are devices used for industrial inspection, and their performance directly affects the accuracy of the final inspection results. Poor performance may prevent the detection of subtle defects or produce images that do not accurately reflect the true extent of the defects. Although comprehensive testing is conducted during the production of industrial endoscopes, this testing is usually done at specific stages using specialized equipment to check the performance of a particular component. The final product is then inspected through random sampling, which cannot guarantee that the industrial endoscopes reaching the user will be of suitable performance. Furthermore, users can only understand the performance of the purchased industrial endoscope through its instruction manual. Verifying its performance requires specialized institutions and equipment, meaning that users cannot quickly verify the performance of industrial endoscopes. Summary of the Invention

[0003] To address the shortcomings of existing methods, this invention provides an industrial endoscope packaging box that can be used for performance testing.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an industrial endoscope packaging box that can be used for performance testing, comprising a square packaging box body, wherein at least one inner surface of the box body, including the box lid, box bottom, side wall and dustproof wing, is printed with a target pattern for testing the performance of the industrial endoscope, wherein the target pattern includes one or more of the following: a color target pattern for color testing, a resolution target pattern for resolution testing, a depth target pattern for depth of field testing, a distortion target pattern for testing the geometric distortion of the imaging system, and a defect simulation pattern for simulating defects; a side wall through hole is provided at the center of any side wall of the packaging box body.

[0005] Preferably, the color target pattern includes one or more of the following: gradient color pattern, standard color block pattern arranged in rows or columns, color wheel pattern, low-contrast color block pattern, and star pattern.

[0006] Preferably, the gradient color pattern is a striped gradient color pattern that changes in the order of red, orange, yellow, green, blue, and purple; the standard color block pattern is a striped pattern composed of square color blocks arranged in rows or columns in the order of purple, red, pink, yellow, green, and blue; the color wheel pattern is a circular pattern composed of fan-shaped color blocks arranged in the order of purple, red, pink, yellow, green, and blue; and the low-contrast color block pattern is a pattern composed of multiple square contrast color blocks arranged at intervals, wherein the contrast color blocks are color blocks with colors opposite to the background color.

[0007] Preferably, the star pattern is composed of multiple star patterns with multiple spokes arranged in rows or columns at intervals. The multiple spokes on each star pattern are symmetrically arranged, and different colors are set on the multiple spokes on different star patterns.

[0008] Preferably, the resolution target pattern includes the USAF 1951 resolution pattern, and also includes one or more of dot plots, square block plots, and line pair plots.

[0009] Preferably, the dot pattern is a pattern composed of multiple black dots of different diameters arranged alternately along the diagonal of a square, with scales on the edge of the square; the square block pattern is a pattern composed of multiple square blocks arranged in rows or columns, with the side length of the multiple square blocks gradually increasing from the middle to both sides, and the square blocks on both sides being symmetrically arranged, and the square block pattern also having scales in the direction of the arrangement of the multiple square blocks; the line pair pattern is a row pattern composed of multiple pairs of line groups arranged alternately, each pair of line groups including two identical lines arranged symmetrically, with the interval between the two lines and the line width being the same, the line widths in the multiple pairs of line groups being arranged in descending order according to the arrangement order of the line groups, and each pair of line groups being marked with a line width value.

[0010] Preferably, the distorted target pattern is a grid pattern with graduations.

[0011] Preferably, the depth-of-field target pattern is a plurality of three-dimensional gray H-shaped patterns arranged in columns at intervals.

[0012] Preferably, the inner surface of the packaging box body is also printed with a direction indicator.

[0013] Preferably, a breakable bridging sealing sheet integrally formed with the packaging box body is provided in the through hole of the side wall.

[0014] The beneficial effects of this invention are as follows: By setting target patterns for different testing items on the inner surface of the packaging box, the packaging box not only serves as packaging but also acts as a target for performance testing of industrial endoscopes. During testing, the object stored inside the packaging box is removed, and a test cavity simulating the usage environment is formed inside the packaging box. The probe of the industrial endoscope is inserted through the side wall through-hole and the direction is adjusted to align with the target pattern to be used for corresponding testing. Users can quickly test and verify the performance of industrial endoscopes themselves without the need for professional equipment and institutions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the inner surface of the packaging box after it has been unfolded according to an embodiment of the present invention; Component names and serial numbers in the diagram: 1-Packaging box body, 10-Box lid, 11-Box bottom, 12-Side wall, 13-Dustproof wing, 2-Color target pattern, 20-Gradient color pattern, 21-Standard color block pattern, 22-Color wheel pattern, 23-Low contrast color block pattern, 24-Star pattern, 3-Resolution target pattern, 30-USAF 1951 resolution pattern, 31-Dot plot, 32-Square block plot, 33-Line pair plot, 4-Depth of field target pattern, 5-Distortion target pattern, 6-Defect simulation pattern, 7-Side wall through hole, 8-Direction indicator. Detailed Implementation

[0016] To more clearly illustrate the objectives, technical solutions, and advantages of the embodiments of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It is clear and complete that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0017] Examples of embodiments of the present invention Figure 1As shown, an industrial endoscope packaging box for performance testing includes a square packaging box body 1. The packaging box body 1 is a cube structure with a white inner surface, and has a lid 10, a bottom 11, and side walls 12. Both the lid 10 and the bottom 11 have extended tongues. The side walls 12 include a left side wall, a right side wall, a front side wall, and a rear side wall. Dustproof wings 13 extend from the upper and lower ends of the left side wall and the right side wall. The packaging box body can be a packaging box for packaging the industrial endoscope body or a packaging box for packaging industrial endoscope accessories. It arrives at the user's hands along with the industrial endoscope. For example, the packaging box body 1 can be made of white cardboard. At least one inner surface of the box body 1, including the lid 10, bottom 11, side wall 12, and dustproof wing 13, is printed with a target pattern for testing the performance of the industrial endoscope. That is, depending on the actual testing requirements, the target pattern is printed on one or more of these inner surfaces; preferably, it is printed on each of them. This allows the user to perform multiple performance tests on the industrial endoscope themselves. The target patterns include a color target pattern 2 for color detection, a resolution target pattern 3 for resolution detection, a depth-of-field target pattern 4 for depth-of-field testing, and a distortion target pattern for testing the geometric distortion of the imaging system. Case 5 and one or more of the defect simulation patterns 6 used to simulate defects are used. The color target pattern 2 is used to detect the industrial endoscope's ability to reproduce and distinguish color and grayscale levels; the resolution target pattern 3 is used to detect the industrial endoscope's ability to reproduce details in a plane; the depth target pattern 4 can qualitatively detect the clarity of the industrial endoscope at different depth positions; the distortion target pattern 5 is used to detect the distortion produced by the industrial endoscope's imaging; and the defect simulation pattern 6 simulates the typical defect characteristics of the item to be inspected by the industrial endoscope. During the inspection process, the defect simulation pattern 6 can be used to directly test the industrial endoscope's ability to identify defects. In practical applications, these target patterns are printed on different inner surfaces of the endoscope packaging box body 1; a side wall through hole 7 is provided at the center of any side wall of the packaging box body 1, which is used to insert the probe of the industrial endoscope. At this time, the size of the side wall through hole 7 is adapted to the probe of the industrial endoscope. When using the product, first remove the items from the main body 1 of the packaging box, then close the main body 1. The internal cavity of the main body 1 forms a simulated cavity for actual use of the industrial endoscope. Then, insert the probe of the industrial endoscope through the through hole 7 on the side wall. After that, adjust the direction of the probe of the industrial endoscope to align it with the corresponding target pattern for testing. Users can quickly test and verify the performance of the industrial endoscope themselves without the need for professional equipment or institutions, thus gaining a clearer understanding of whether the purchased industrial endoscope meets their requirements.At this time, a breakable bridging sealing sheet (not shown in the figure) integrally formed with the packaging box body 1 can be installed in the side wall through hole 7. In this way, when the packaging box body 1 is used to package the industrial endoscope, the side wall through hole 7 is in a closed state, and external debris will not enter the packaging box body 1, avoiding adverse effects on the industrial endoscope inside. For example, an annular indentation is pressed into the packaging box body 1, and the part corresponding to the inner ring of the annular indentation constitutes the breakable bridging sealing sheet. Then, through holes are set at intervals along the circumference of the annular indentation, and a connecting bridge connecting the breakable bridging sealing sheet and the packaging box body 1 is formed between two adjacent through holes. This connecting bridge can be broken during use.

[0018] The color target pattern 2 includes one or more of the following: gradient color pattern 20, standard color block pattern 21 arranged in rows or columns, color wheel pattern 22, low-contrast color block pattern 23, and star pattern 24. The gradient color pattern 20 is used to detect whether the industrial endoscope can clearly distinguish and transition between adjacent similar colors, thereby evaluating the continuity of color reproduction, such as assessing whether it causes color stratification or artifacts. If the gradient color pattern 20 is a striped gradient color pattern that gradually changes according to the order of red, orange, yellow, green, blue, and violet, it facilitates rapid location of a specific area for detection and analysis. The standard color block pattern 21 is used to test the accuracy of color reproduction in a single direction by the industrial endoscope, thereby ensuring that its capture of key colors meets the requirements. In the standard color block pattern 21, all color blocks are of the same shape and size and are arranged sequentially without gaps between adjacent color blocks. In practical applications, the arrangement is determined by whether it is horizontal or vertical, forming a row or column. For example, the standard color block pattern 21 is a strip pattern composed of square color blocks arranged in the order of purple, red, pink, yellow, green, and blue, arranged in rows or columns. This creates a jump in color change, making it easier to detect whether the industrial endoscope produces defects such as false colors or color banding when handling drastic color changes. The inclusion of pink allows for the testing of its ability to reproduce other typical colors besides spectral colors. The color wheel pattern 22 is also used to evaluate the color reproduction characteristics of the industrial endoscope, specifically its ability to reproduce colors when handling color changes in the circumferential direction. The color wheel pattern 22 is a circular pattern composed of fan-shaped color blocks arranged in the order of purple, red, pink, yellow, green, and blue. The low-contrast color block pattern 23 is used to verify the sensitivity of industrial endoscopes in detecting color and contrast, thereby obtaining the ability of industrial endoscopes to distinguish subtle color and brightness differences. The low-contrast color block pattern 23 is a pattern composed of multiple square contrast color blocks arranged at intervals. The contrast color blocks are set on a background color with color blocks of the opposite color. The contrast color blocks are set as a large square with a color set on it as the background color. On the large square, a small square with a side length of about 1 / 3 of the side length is set. Another color with a similar color and brightness to the background color or a large difference is set on the small square. The small square can adopt a rounded corner or right angle structure and is set in the middle of the large square or near a certain edge of the large square. The small square can also be placed upright or rotated 90 degrees and placed on the side on the large square.The star pattern 24 is used to comprehensively evaluate the characteristics of industrial endoscopes in terms of chromatic aberration, distortion, and resolution. For example, by setting the spokes of the star pattern 24 to black and the background to white, the large reflectivity ratio between the black and white spokes can be used to test the sharpness and distortion performance of the industrial endoscope lens. Alternatively, by setting multiple spokes of the star pattern 24 to a single color or multiple different colors, the effect of color on resolution can be detected. The star pattern 24 is composed of multiple star-shaped diagrams with multiple spokes arranged in alternating rows or columns. Each star pattern has multiple spokes arranged symmetrically, and different star patterns have multiple different colors on the spokes. In other words, the star pattern 24 is composed of multiple star patterns, arranged in rows or columns according to their positions. Each star pattern has multiple spokes, and the multiple spokes are arranged symmetrically. In addition, according to different needs, multiple spokes in all the spokes in the star pattern are set to different colors. The accuracy of color reproduction of the industrial endoscope is evaluated by color, and the radial structure of the spokes can be used to evaluate the resolution of the industrial endoscope.

[0019] For the resolution target pattern 3, the resolution target pattern 3 includes the USAF 1951 resolution pattern 30, and also includes one or more of the following: dot pattern 31, square block pattern 32, and line pair pattern 33. That is to say, the resolution target pattern 3 is based on the USAF 1951 resolution pattern 30, which is the pattern on the USAF 1951 resolution test board. Then, it is supplemented by one or more of the following: dot pattern 31, square block pattern 32, and line pair pattern 33. At this time, the USAF 1951 resolution pattern 30 and the side wall through hole 7 can be set on the opposite two side walls of the packaging box body 1. The sharpness of the imaging system of the industrial endoscope is judged by observing the sharpness of the edges of the dots on the dot plot 31. That is, whether there are halos, jagged edges or blurring at the edges of the dots. The resolving power of the industrial endoscope is evaluated by detecting whether different dots can maintain a circle and have distinct edges. The geometric distortion of the industrial endoscope is judged by observing whether the dots after imaging are still round. The dot plot 31 is a pattern composed of multiple black dots with different diameters arranged alternately along the diagonal of a square and with scales set on the edge of the square. That is, these black dots are set on the inner surface of the box lid 10, box bottom 11 or side wall 12 of the packaging box body 1. These black dots are arranged in a way that the diameter increases or decreases along the diagonal. At the same time, the diameter of the black dots is marked in the form of numbers near the black dots. The scale is set on the edge of the inner surface using scale lines. The diameter of the black dots and the scale on the edge are represented by different scale methods, such as metric scale and imperial scale. The square blocks in Figure 32 are used to simulate the edge of the component to be inspected by the industrial endoscope. By observing these blocks, the smallest size that the endoscope can resolve is determined. That is, the smallest block with a clear boundary detected by the industrial endoscope is the limit of the industrial endoscope's resolution. The position of the blocks in the image is used to confirm the center and edge of the field of view. The edge image quality of the industrial endoscope is evaluated by comparing the clarity of the center block and the edge blocks. The square block diagram 32 is a pattern composed of multiple square blocks arranged in rows or columns. The side length of the multiple square blocks gradually increases from the middle to both sides, and the square blocks on both sides are symmetrically arranged. The square block diagram also has scales in the direction of the arrangement of multiple square blocks. That is to say, the side length of the square block in the middle is the smallest. Then, on the opposite sides of the square block, with the square block as the center of symmetry, two larger square blocks with a side length of the same size are set. The other square blocks are set in the same way. The scales in the direction of arrangement are scale lines printed on the inner surface of the packaging box body. Through the scale lines, the smallest defect that the industrial endoscope can detect can be clearly seen.Line pair diagram 33 is used to detect the spatial resolution of industrial endoscopes. Line pair diagram 33 is a row of patterns composed of multiple pairs of lines arranged side by side at intervals. Each pair of lines includes two identical lines arranged symmetrically, and the spacing and width between the two lines are the same. The line widths in the multiple pairs of lines are set from large to small according to the arrangement order of the line groups, and each pair of lines is marked with a line width value. By observing the most clearly distinguishable and finest pair of lines in the image, the smallest detail that the industrial endoscope can distinguish is detected, that is, the ability of the industrial endoscope to see the finest defect texture.

[0020] For the distortion target pattern 5, it is a grid pattern with scales. The grid is composed of horizontal and vertical equally spaced black lines. When there is lens distortion, the straight lines in the image will appear to be curved, and the grid spacing will change, resulting in distortion. The scale setting allows us to know the actual size of each square in the grid pattern, so the squares can be processed as an image scale to make a rough size estimate of objects in the field of view.

[0021] As for depth target pattern 4, it is used to test the depth of field of industrial endoscopes. Depth target pattern 4 consists of multiple three-dimensional gray H-shaped patterns arranged in alternating columns. The three-dimensional structure of the H-shaped pattern will produce changes in the depth direction. When the focus is accurate, the edges of the H-shaped pattern are sharp. When the lens moves forward or backward, the part of the H-shaped structure will go out of focus, and the edges of the corresponding part will become soft and blurry. At this time, the depth of field of industrial endoscopes can be easily and quickly determined.

[0022] For defect simulation pattern 6, it can be set according to the application scenario of the industrial endoscope or the defects that are more likely to occur in normal use. By observing the detection results of these simulated defects, the detection capability of the industrial endoscope for similar defects in actual use can be determined. For example, defect simulation pattern 6 is a strip-shaped simulation pattern. This strip-shaped simulation pattern uses two parallel, spaced-apart structures with an inclined lower base and a lower base length shorter than the upper base length. Defects such as irregularly shaped notches and cracks are then set on the inclined sides, simulating defects that occur in the product during manufacturing, transportation, or use. For example, defect simulation patterns can simulate pipe defects such as cracks and pits that often occur on the inner wall of a circular pipe; or simulate blade defects such as cracks, notches, or deformation on an aircraft engine blade. By using defect simulation pattern 6, it is possible to quickly and conveniently verify whether the purchased industrial endoscope meets the requirements, thus enabling the purchase of a suitable industrial endoscope.

[0023] Further improvements, such as Figure 1As shown, the inner surface of the packaging box body 1 is also printed with a direction indicator 8. The setting of the direction indicator 8 can establish a reference for spatial coordinates, thereby solving the problem of misjudgment caused by rotation, flipping, etc. in the detection, ensuring that each test and comparison between different devices are carried out in the same spatial orientation, so that the results are repeatable and comparable.

[0024] In practical applications, a striped simulated pattern is set on the inner surface of the box cover 10; a dotted pattern 31 is set on the inner surface of the box bottom 11, and a scale is set on the front side of the dotted pattern 31; a square block pattern 32 is set on the left side of the inner surface of the rear sidewall along the vertical direction, and a scale is set on the left edge; a vertical gradient color pattern 20 is set on the right side of the square block pattern 32; a pipe simulated defect pattern is set on the inner surface of the front sidewall, and a direction indicator 8 is set on its edge; a blade simulated defect pattern is set on the inner surface of the left sidewall, and the sidewall through hole 7 is set at the center of the blade simulated defect pattern, with direction indicators 8 set at its lower left and upper right corners respectively; a vertical standard color block pattern 21 is set on the left side of the inner surface of the right sidewall, a USAF 1951 resolution pattern 30 is set on the right side of the standard color block pattern 21, and a line pair pattern 33 is set below the USAF 1951 resolution pattern 30. A color wheel pattern 22 is set in the upper right corner of the 1951 resolution pattern 30, and a grid pattern is set in the lower right corner; a low-contrast color block pattern 23 is set on the inner surface of the dustproof wing 13 above the left wall, and an H-shaped depth target pattern 4 is set on the inner surface of the dustproof wing 13 below; a star pattern 24 is set on the inner surface of the dustproof wing 13 above the right wall, and an auxiliary dot pattern 31 is set on the inner surface of the dustproof wing 13 below, serving as a direction indicator 8 for testing.

[0025] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An industrial endoscope packaging box that can be used for performance testing, characterized in that, The packaging box includes a square box body. At least one inner surface of the box body, including the lid, bottom, side wall, and dustproof wing, is printed with a target pattern for testing the performance of an industrial endoscope. The target pattern includes one or more of the following: a color target pattern for color detection, a resolution target pattern for resolution detection, a depth target pattern for depth of field testing, a distortion target pattern for testing the geometric distortion of the imaging system, and a defect simulation pattern for simulating defects. A side wall through hole is provided at the center of any side wall of the packaging box body.

2. The industrial endoscope packaging box for performance testing according to claim 1, characterized in that, The color target pattern includes one or more of the following: gradient color pattern, standard color block pattern arranged in rows or columns, color wheel pattern, low-contrast color block pattern, and star pattern.

3. The industrial endoscope packaging box for performance testing according to claim 2, characterized in that, The gradient color pattern is a striped gradient color pattern that changes in the order of red, orange, yellow, green, blue, and purple; the standard color block pattern is a striped pattern composed of square color blocks arranged in rows or columns in the order of purple, red, pink, yellow, green, and blue; the color wheel pattern is a circular pattern composed of fan-shaped color blocks arranged in the order of purple, red, pink, yellow, green, and blue; the low-contrast color block pattern is a pattern composed of multiple square contrast color blocks arranged at intervals, wherein the contrast color blocks are color blocks with colors opposite to the background color.

4. The industrial endoscope packaging box for performance testing according to claim 2, characterized in that, The star pattern is composed of multiple star patterns with multiple spokes arranged in rows or columns at intervals. The multiple spokes on each star pattern are symmetrically arranged, and different colors are set on the multiple spokes on different star patterns.

5. The industrial endoscope packaging box for performance testing according to claim 1, characterized in that, The resolution target pattern includes the USAF 1951 resolution pattern, and also includes one or more of the following: dot plot, square block plot, and line pair plot.

6. The industrial endoscope packaging box for performance testing according to claim 5, characterized in that, The dot pattern is a pattern composed of multiple black dots of different diameters arranged alternately along the diagonal of a square, with scales on the edge of the square; the square block pattern is a pattern composed of multiple square blocks arranged in rows or columns, with the side length of the multiple square blocks gradually increasing from the middle to both sides, and the square blocks on both sides being symmetrically arranged, and the square block pattern also having scales on the direction of the arrangement of the multiple square blocks; the line pair pattern is a row pattern composed of multiple pairs of line groups arranged side by side at intervals, each pair of line groups including two identical lines arranged symmetrically, with the interval between the two lines and the line width being the same, the line widths in the multiple pairs of line groups being arranged in descending order of the line group arrangement, and each pair of line groups being marked with a line width value.

7. The industrial endoscope packaging box for performance testing according to claim 1, characterized in that, The distorted target pattern is a grid pattern with graduations.

8. The industrial endoscope packaging box for performance testing according to claim 1, characterized in that, The depth-of-field target pattern consists of multiple three-dimensional gray H-shaped patterns arranged in alternating columns.

9. The industrial endoscope packaging box for performance testing according to claim 1, characterized in that, The inner surface of the packaging box is also printed with directional indicators.

10. The industrial endoscope packaging box for performance testing according to claim 1, characterized in that, A breakable bridging sealing sheet, integrally formed with the packaging box body, is provided inside the through hole in the side wall.

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