Rainbow pattern detection system and method for diffraction optical waveguide

Abstract

The present invention provides a rainbow ripple detection system and method for a diffraction light waveguide, comprising a light source assembly, a diffraction light waveguide carrier assembly, a rainbow ripple image acquisition assembly, and a rainbow ripple image detection assembly. The light source in the light source assembly is configured to face the position of the diffraction light waveguide and can be adjusted to different longitudes and / or latitudes relative to the waveguide. The rainbow ripple image acquisition assembly is located on one side of the center of the eye box of the diffraction light waveguide and is used to acquire rainbow ripple images of the diffraction light waveguide at different longitudes and / or latitudes and transmit them to the rainbow ripple detection image assembly. The rainbow ripple effect at different longitudes and / or latitudes is taken into account to overcome the problem of single quantitative analysis. The position of the light source outlet is adjusted to change the different longitudes and / or latitudes of the light source to simulate the rising in the east and setting in the west of the ambient light source, thereby realistically simulating the environment in which the waveguide is located and comprehensively reflecting the diffraction rainbow ripple phenomenon in different scenarios from multiple dimensions.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a rainbow pattern detection system and method for a diffraction optical waveguide. Background Art

[0002] Due to the grating structure design and manufacturing process of the diffraction waveguide, when external ambient light is incident on the diffraction waveguide, it is easy to diffract and produce rainbow patterns, which is undesirable for those skilled in the art. When the ambient light is incident from different angles, the rainbow pattern effect produced is also different, such as the size of the rainbow pattern, the location of the area where the rainbow pattern is formed, etc. In certain special cases, under the premise of taking into account the display efficiency and brightness of the diffraction waveguide, when partial rainbow patterns appear in a certain area of ​​the diffraction waveguide or the area of ​​the rainbow patterns is relatively small, it is allowed to allow the waveguide to have a very small amount of rainbow patterns, so as to improve the qualification rate and detection rate of the waveguide. Of course, when optimizing the performance of the waveguide while taking into account the problem of rainbow patterns, avoiding the appearance of rainbow patterns as much as possible is what those skilled in the art expect.

[0003] After searching the prior art, publication number CN117191347A discloses a system and method for detecting rainbow patterns in optical waveguides. The system records that rainbow patterns are collected by a rainbow pattern collection device, such as an integrating sphere, and the design results of the feedback grating can be evaluated based on the optical parameters of the rainbow patterns. The optical parameters of the rainbow patterns include but are not limited to the radiation flux of the rainbow patterns and / or the spectral data of the rainbow patterns. Based on this scheme, the rainbow light beam is scattered after passing through the integrating sphere and reflected multiple times, and then collected by a rainbow collecting device, and the radiation flux and spectral data of the rainbow pattern are obtained, which realizes the quantitative capture and analysis of the rainbow pattern of the optical waveguide, thereby realizing the quantitative evaluation of the strength of the rainbow pattern effect. That is, this scheme obtains the light intensity after multiple reflections to calculate the rainbow pattern, or even if this scheme uses other rainbow pattern collection devices, it can only obtain the light intensity of the rainbow pattern and quantitatively evaluate the strength of the rainbow pattern. The rainbow pattern light in a certain area or multiple areas is first scattered and then collected, and can only characterize the intensity of the rainbow pattern in data. It is only a quantitative analysis and cannot truly reflect the size, position and other multi-dimensional information of the rainbow pattern. For those skilled in the art, when analyzing the rainbow pattern of the diffraction optical waveguide, the rainbow pattern information obtained is relatively small, and simple quantitative analysis cannot meet the current analysis needs.

[0004] Therefore, how to realize multi-dimensional information such as the area size of the diffraction light waveguide rainbow pattern, the eyebox position of the area, and the brightness to fully reflect the display status of the rainbow pattern is important to those skilled in the art and is urgently needed. Summary of the Invention

[0005] The present invention provides a system and method for detecting rainbow patterns in diffraction light waveguides, which solve the problems existing in the prior art. By obtaining information such as the size of the rainbow patterns in the diffraction light waveguide under ambient light at different longitudes and latitudes, and the position of the rainbow patterns in the eyebox, multi-dimensional information analysis of the rainbow patterns is achieved, such as the brightness, intensity distribution, color distribution, and azimuth of the rainbow patterns.

[0006] A rainbow pattern detection system for a diffraction light waveguide includes a light source component, a diffraction light waveguide carrying component, a rainbow pattern image acquisition component, and a rainbow pattern image detection component;

[0007] The light source in the light source assembly is configured to face the location of the diffraction light waveguide and can be adjusted to different longitudes and / or latitudes relative to the diffraction light waveguide;

[0008] The diffraction optical waveguide supporting component is used to support the diffraction optical waveguide;

[0009] The rainbow pattern image acquisition component is located on one side of the center of the eye box of the diffraction light waveguide, and is used to acquire rainbow pattern images of the diffraction light waveguide at different longitudes and / or latitudes and transmit them to the rainbow pattern detection image component;

[0010] The rainbow pattern image detection component determines and obtains multi-dimensional image information of the rainbow pattern based on the rainbow pattern images obtained at different longitudes and / or latitudes.

[0011] Further, operatively, a diffraction light guide supporting component is defined for supporting the diffraction light guide and enabling the diffraction light guide to move relative to the light source along a position where the center of the eye box is located.

[0012] It can be defined that the longitude is defined as the angle formed between the center position of the diffraction optical waveguide, the light source and the 0° scale line. By adjusting the position of the light outlet of the light source, different longitude angles are formed. The latitude is defined as the angle between the center position of the diffraction optical waveguide in the plane where the diffraction optical waveguide is located and the line connecting the plane position of the light source in the direction of the center position of the diffraction optical waveguide. The relative distance between the diffraction optical waveguide and the light source in the direction of the center position is adjusted to form different latitude angles.

[0013] In some embodiments, the multi-dimensional image information includes but is not limited to the brightness, area, intensity distribution, color distribution, and azimuth of the rainbow pattern generated by the diffraction light waveguide.

[0014] In some other embodiments, the light source assembly includes a light source and a bracket, and the light source is slidably connected to the guide rail of the bracket, so that the light source can slide on the guide rail of the bracket relative to the plane where the diffraction optical waveguide is located to adapt to different latitude environments where the diffraction optical waveguide is located.

[0015] It can be defined that the light source has at least one light outlet, and the position of the light outlet changes with the change of longitude and / or latitude.

[0016] Furthermore, the light source also has a shielding layer, which is adapted to the structure of the light source and is slidably arranged on the surface of the light source, and the angle of the light outlet of the light source relative to the diffraction light waveguide is adjusted by the shielding layer.

[0017] Furthermore, the light source is point-shaped, with the observation center of the diffraction light waveguide as the center of the circle, and the angle of the light source relative to the diffraction light waveguide is adjusted through the shielding layer to achieve an angle selection of 0° to 180° to simulate the rising and setting of ambient light in the east and west.

[0018] In some embodiments, the shielding layer has scale lines, and the shielding layer has scale line markings corresponding to the position of the light source at the determined 0° scale line.

[0019] At the same time, the present invention also provides a method for detecting rainbow ripples in a diffractive optical waveguide. Based on any of the aforementioned systems for detecting rainbow ripples in a diffractive optical waveguide, the method comprises the following steps:

[0020] (1) Providing the rainbow pattern detection system of the diffraction optical waveguide; and debugging and passing it;

[0021] (2) Based on a preset longitude and / or latitude, again adjusting the horizontal position of the light source assembly relative to the diffraction light waveguide, and simultaneously adjusting the angle of the light source outlet relative to the diffraction light waveguide, so as to obtain diffraction images of the diffraction light waveguide at different longitudes and / or latitudes;

[0022] (3) turning on the light source and performing a rainbow pattern test, obtaining rainbow pattern images at different longitudes and / or latitudes through the rainbow pattern image acquisition component and the rainbow pattern image detection component;

[0023] (4) adjusting the diffraction optical waveguide to different longitude and / or latitude conditions to obtain rainbow pattern images under multiple different conditions;

[0024] (5) The rainbow pattern multi-dimensional information of different rainbow patterns is obtained by analyzing the rainbow pattern image detection component.

[0025] Furthermore, the step (4) is defined in detail as follows: adjusting the angle formed between the center position of the diffraction optical waveguide and the light source and the 0° scale line, thereby forming longitude angles of different sizes by adjusting the position of the light source outlet of the light source; adjusting the angle between the center position of the diffraction optical waveguide in the plane where the diffraction optical waveguide is located and the line connecting the plane position of the light source in the direction of the center position of the diffraction optical waveguide, thereby forming latitude angles of different sizes.

[0026] The present invention proposes a system and method for detecting rainbow ripples in a diffraction light waveguide. First, a system for detecting rainbow ripples in a diffraction light waveguide is provided. The detection system prioritizes the rainbow ripple effect of the diffraction light waveguide at different longitudes and / or latitudes, overcoming the problem in the prior art that only a single quantitative analysis can be achieved. By adjusting the positional relationship between the diffraction light waveguide and the light source relative to the plane, and simultaneously adjusting the position of the light source outlet to change the light source at different longitudes and / or latitudes, the system simulates the rising in the east and setting in the west of the ambient light source, thereby achieving angular adjustment of the ambient light source at different longitudes and / or latitudes.

[0027] Furthermore, the present invention realistically simulates the environment in which a user would be wearing a diffractive optical waveguide, comprehensively reflecting the diffraction rainbow pattern phenomenon in different scenarios from multiple dimensions. In this way, multi-dimensional information such as the brightness, area, intensity distribution, color distribution, and azimuth of the rainbow pattern of the diffraction optical waveguide is obtained, providing a technical reference for technicians in this field to comprehensively judge the rainbow pattern, with unexpected technical effects. At the same time, through the method of the present invention, the rainbow pattern information obtained is closer to the actual situation, thereby improving the detection rate of the diffraction optical waveguide and the qualified rate of the product, with good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of 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.

[0029] Figure 1 A schematic diagram of a rainbow pattern detection system for a diffraction optical waveguide provided by the present invention;

[0030] Figure 2 A schematic diagram of a light source of a rainbow pattern detection system for a diffraction light waveguide provided by the present invention;

[0031] Figure 3 A schematic diagram of the light source position at different longitudes and latitudes of a rainbow pattern detection system for a diffraction optical waveguide provided by the present invention;

[0032] Figure 4(a) to Figure 4(c) A schematic diagram of rainbow patterns obtained by a method for detecting rainbow patterns in a diffraction optical waveguide provided by the present invention;

[0033] Figure 5(a) to Figure 5(b) Schematic diagram of rainbow ripple brightness obtained by a rainbow ripple detection method for a diffraction light waveguide provided by the present invention

[0034] Figure 6 A schematic flow chart of a method for detecting rainbow patterns in a diffraction optical waveguide provided by the present invention;

[0035] Figure ID:

[0036] 1: Light source assembly; 2: Diffraction optical waveguide; 3: Rainbow pattern image acquisition assembly; 4: Rainbow pattern image detection assembly; 11: Light source; 12: Bracket. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 creative efforts should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] Based on the technical problems pointed out in the background technology of the present invention, the method of detecting waveguide rainbow stripes in the existing technology can only achieve quantitative capture and analysis, and quantitatively evaluate the strength of the rainbow effect, but it is difficult to achieve detailed analysis of rainbow stripes in multiple dimensions such as the size of the rainbow stripes and the position of the eyebox area. For those skilled in the art, the rainbow stripe information obtained by analysis is relatively small and difficult to meet the requirements. Therefore, the existing detection means are insufficient and difficult to apply to waveguide rainbow stripe analysis in multiple scenarios; and the analysis requirements for diffraction optical waveguides are often multi-dimensional, and only quantitative analysis is difficult to meet the requirements of multiple scenarios. Multi-dimensionality can comprehensively reflect the diffraction rainbow stripe phenomenon in different scenarios, especially the rainbow stripe effects at different longitudes and latitudes, such as the size, position, brightness, etc. of the rainbow stripes. The present invention provides a rainbow stripe detection system and detection method for a diffraction optical waveguide, which intends to solve the problems of the existing technology and proposes this solution, which will be described in detail in the following embodiments.

[0040] To further illustrate, due to the good display effect and low production cost of the diffraction light waveguide, its scope of application is becoming wider and wider, and its usage scenarios include multiple areas with different longitudes and / or latitudes, such as domestic or foreign, or different domestic sunlight scenes; at different longitudes and / or latitudes, the rainbow pattern display size, brightness, position, etc. of the diffraction light waveguide are different, and the rainbow pattern image obtained by the human eye is also different. Therefore, how to accurately test and simulate the rainbow pattern effect of the diffraction light waveguide at different longitudes and / or latitudes is very important to those skilled in the art; even further, different test conditions and environments lead to different test rainbow pattern image results. How to achieve multi-dimensional accurate testing of rainbow patterns is conducive to unifying the testing standards in the industry, which is necessary. Based on this, the technical solution of the present invention is proposed.

[0041] A rainbow pattern detection system for diffraction light waveguides, such as Figures 1 to 3 As shown, it includes a light source component 1, a diffraction optical waveguide carrying component (not shown in the figure), a rainbow pattern image acquisition component 3, and a rainbow pattern image detection component 4; the light source 11 in the light source component 1 is configured to face the position of the diffraction optical waveguide 2 and the light source 11 can be adjusted to different longitudes and / or latitudes relative to the diffraction optical waveguide 2; the diffraction optical waveguide carrying component (not shown in the figure) is used to carry the diffraction optical waveguide 2; the rainbow pattern image acquisition component 3 is located on one side of the center of the eyebox of the diffraction optical waveguide 2, and is used to obtain rainbow pattern images of the diffraction optical waveguide 2 at different longitudes and / or latitudes, and transmit them to the rainbow pattern detection image component 4; the rainbow pattern image detection component 4 determines the multi-dimensional image information of the rainbow pattern based on the obtained rainbow pattern images at different longitudes and / or latitudes.

[0042] Alternatively, on the other hand, the diffraction optical waveguide supporting assembly is used to support the diffraction optical waveguide 2 and enable the diffraction optical waveguide 2 to move relative to the light source 11 along the position of the center of its eyebox, such as the position of the diffraction optical waveguide 2 moves, or the position of the light source 11 moves, or they move relative to each other, with the main focus on achieving relative movement or displacement as pointed out in the present invention.

[0043] The multi-dimensional image information of the rainbow pattern shown in the present invention includes but is not limited to the brightness, area, intensity distribution, color distribution and azimuth of the rainbow pattern.

[0044] In some embodiments, the light source assembly 1 includes a light source 11 and a bracket 12. The light source 11 is slidably connected to the guide rail of the bracket 12, so that the light source 11 can slide on the guide rail of the bracket 12 relative to the plane where the diffraction optical waveguide 2 is located, or be located on both sides of the plane where the diffraction optical waveguide 2 is located, or be on the same plane as the plane where the diffraction optical waveguide 2 is located. Adjustments are made based on the different longitude and / or latitude test environments and test requirements where the diffraction optical waveguide 2 is located. Such a starting point is beneficial to the present invention.

[0045] like Figure 2 As shown, the light source 11 is annular and is used to simulate the light emitted by ambient light sources at different longitudes and / or latitudes. It has at least one light outlet 111 .

[0046] Of course, in some other embodiments, the light source 11 also includes structures of other shapes to simulate the real test environment and adapt to different longitudes and / or latitudes for testing, and adapt to changes in position due to changes in longitudes and / or latitudes. The present invention does not impose any structural limitations on this.

[0047] Furthermore, the light source 11 also has a shielding layer (not shown in the figure), which is slidably arranged on the surface of the light source 11. The shielding layer can be used to adjust the angle of the light source outlet 111 relative to the diffraction light waveguide 2 to achieve adjustment at different longitudes.

[0048] For example, the light source 11 is point-shaped, with the observation center (or eyebox center) of the diffraction light waveguide 2 as the center of the circle. When the angle of the light outlet 111 at different positions is adjusted through the shielding layer, an angle selection of 0° to 180° can be achieved to simulate the rising and setting of the sun.

[0049] In practice, the shielding layer has scale lines (not shown in the figure), which are adapted to the structure of the light source 11 and can slide along the surface of the light source 11; the shielding layer has scale line marks corresponding to the position of the light source 11 at the determined 0° scale line, and the 0° scale line is used as a reference benchmark, such as Figure 3As shown, it is assumed that the connection point where the light source 11 is slidably connected to the guide rail of the bracket 12 is set to the position of the 0° scale line (of course, relatively, the position of the 0° scale line is used as a reference benchmark and can be adjusted according to the situation. In this regard, the present invention does not impose any position or benchmark restrictions). By adjusting the position of the scale line of the shielding layer relative to the 0° scale line, the position of the light outlet 111 of the light source is adjusted, and the angle selection of 0° to 180° is achieved to simulate the actual ambient light conditions of the sun rising in the east and setting in the west at different longitudes or different time periods, and obtain the rainbow pattern conditions of the diffraction light waveguide 2 in different scenarios.

[0050] Optionally, the shielding layer is annular, the light source 11 is annular, and the annular shielding layer is adapted to the annular light source structure. By adjusting the position of the annular shielding layer relative to the light source 0°, the light source outlet 111 can be adjusted to different angles relative to the diffraction light waveguide to achieve tests at different longitudes.

[0051] The above only shows the tests for different longitudes. The following will further describe the tests for different latitudes.

[0052] In some embodiments, as Figure 1 As shown, the light source 11 is slidably connected to the guide rail of the bracket 12. The light source 11 can move up and down along the axial direction of the guide rail of the bracket 12 to adapt to the different latitude environments where the diffraction optical waveguide is located, so as to test the rainbow patterns seen by the human eye when the diffraction optical waveguide is incident with light at different latitudes.

[0053] Of course, if Figure 1 As shown, in most cases, along the vertical direction, the plane of the latitude of the light source 11 is different from the plane of the diffraction optical waveguide 2. For example, along the vertical direction from bottom to top, the light source 11 is located on one side of the diffraction optical waveguide 2, for example, the plane of the latitude of the light source 11 is located below the plane of the diffraction optical waveguide 2, that is, the plane of the diffraction optical waveguide 2 is located above the plane of the light source 11. In some special or extreme cases, for example, the light source 11 and the diffraction optical waveguide 2 are located in the same plane, or even the plane of the light source 11 is located above the plane of the diffraction optical waveguide 2. To cope with different test environments, the present invention does not impose any positional restrictions on the relative positional relationship between the two.

[0054] Through the above embodiments, the angle of the light source outlet 111 relative to the diffraction optical waveguide 2 is adjusted by adjusting the shielding layer and / or the light source 11 can be moved up and down along the axial direction of the guide rail of the bracket 12 to achieve adjustments in different longitudes and dimensions, so as to simulate the rainbow patterns of the diffraction optical waveguide 2 at different longitudes and latitudes, and realize multi-dimensional information analysis of the rainbow patterns.

[0055] To further explain, Figure 3As shown in (a), when the light source 11 is located below the plane where the diffraction optical waveguide 2 is located, as shown in the figure, the plane where the light source 11 is located and the plane where the diffraction optical waveguide 2 is located, based on the angle between the line connecting the center position of the diffraction optical waveguide 2 (i.e., the center position of the eyebox) and the plane position of the light source 11 in the two planes, in the direction of the center position of the diffraction optical waveguide 2, form an angle α. Based on the different positions of the plane where the light source 11 is located, the relative distance between the diffraction optical waveguide 2 and the light source 11 in the direction of the center position of the diffraction optical waveguide 2 is adjusted to form different latitude angles. The formed angle α is different, thereby realizing the diffraction rainbow pattern phenomenon under the conditions of incident ambient light at different latitudes.

[0056] like Figure 3 As shown in (b), the center position of the diffraction optical waveguide 2 (i.e., the center position of the eyebox) forms an angle β with the light source 11 and the 0° scale line. By adjusting the position of the light outlet 111 of different light sources 11, different angles β are formed, thereby changing the size of the angle β to achieve adjustment of ambient light at different longitudes.

[0057] Through the scheme of the above embodiment, by adjusting the size of the angles α and β, it is possible to simulate the rising and setting of the sun at different longitudes and / or latitudes, and to achieve rainbow pattern testing of the diffraction light waveguide at different positions, especially the rainbow pattern effect at different longitudes and latitudes, including testing to obtain multi-dimensional information such as the image of the rainbow pattern, image area size, image area position, brightness, intensity distribution, color distribution and azimuth angle. For those skilled in the art, the effect is significant.

[0058] Of course, it is known that since the diffraction waveguide has different grating structure designs or different external dimensions, the diffraction rainbow pattern phenomenon may be different. Therefore, by adjusting different angles α and β to adapt to different waveguide models, the present invention has better adaptability to adapt to the testing of different models of diffraction waveguides and has a wider range of applications.

[0059] Furthermore, in some embodiments, the rainbow pattern image acquisition component 3 is located on one side of the center of the eyebox of the diffraction light waveguide 2. The rainbow pattern image acquisition component 3 includes an imaging device and an optical lens, which is used to obtain the rainbow pattern image of the diffraction light waveguide 2 at different longitudes and / or latitudes and transmit it to the rainbow pattern image detection component 4.

[0060] The rainbow pattern image detection component 4 obtains the brightness, intensity distribution, color distribution and azimuth of the rainbow pattern by analyzing the multi-dimensional information of the rainbow pattern based on the acquired rainbow pattern image.

[0061] like Figure 4(a) to Figure 4(b)As shown, the rainbow pattern image detection component 4 obtains different rainbow pattern image conditions, and according to the image, analyzes and obtains information such as the size, area, and image region position of different rainbow patterns in the image. As shown in the figure, the rainbow patterns appear in different regions of the captured image. In FIG4(a), the rainbow pattern appears in the middle of the entire image, in FIG4(b), the rainbow pattern appears in the upper right position of the entire image, and in FIG4(c), the rainbow pattern appears in the lower left part of the entire image. Information such as the color distribution of the rainbow pattern can also be obtained.

[0062] Furthermore, Figure 4(a) to Figure 4(b) Only the case where the rainbow pattern is blue is shown. Of course, depending on the different models of diffraction optical waveguides and the ambient light at different longitudes and latitudes, the rainbow pattern may appear red, green, etc. Based on the different rainbow pattern colors obtained, those skilled in the art can provide feedback on the structural design of the grating, such as correcting and feeding back the grating structural parameters such as the period, duty cycle, tooth shape, aspect ratio, etc., thereby achieving adjustment of the rainbow pattern.

[0063] Of course, it is known that when the color of the rainbow pattern is different, the corrected grating parameters may be different. In this regard, the rainbow pattern color, area size, and regional position relationship obtained by the present invention can be appropriately used to feed back the structural parameters of the corrected diffraction grating. Based on this method, the efficiency and accuracy of rainbow pattern correction can be improved.

[0064] On the other hand, based on the acquired rainbow pattern color, area, brightness and other information, a threshold is preset to further determine whether the rainbow pattern effect of the diffraction light waveguide is qualified. Assuming that the color RGB value, area size value, brightness value and other threshold values ​​are within the threshold range determined by the color RGB value, area size value, brightness value, etc., when it is lower than the preset threshold, the waveguide is judged to be qualified; otherwise, the waveguide is unqualified, thereby improving the detection rate of the waveguide, which is beneficial to improving the qualified rate of the waveguide.

[0065] Furthermore, on the one hand, Figure 5(a) to Figure 5(b) The brightness of rainbow patterns in different areas obtained at different latitudes is shown respectively. Based on the system or detection method, the brightness of rainbow patterns in different areas can be obtained; as shown in the brightness values ​​on the right side of the figure, the brightness of the rainbow patterns gradually increases from black to yellow.

[0066] On the other hand, based on Figure 5(a) to Figure 5(b) The azimuth angle of the rainbow pattern can be obtained by combining the coordinate system of the rainbow pattern image acquisition component 3 with the obtained rainbow pattern image. For those skilled in the art, based on the azimuth angle, it is beneficial to further optimize the grating structure parameters and adjust the azimuth angle of the rainbow pattern to improve the rainbow pattern.

[0067] At the same time, the present invention provides a method for detecting rainbow patterns of diffraction optical waveguides, such as Figure 6As shown, based on the rainbow pattern detection system of the diffraction light waveguide described in any of the above embodiments, the detection method is as follows:

[0068] (1) Provide the rainbow pattern detection system of the diffraction optical waveguide described in the above embodiment; and debug it to ensure that it is qualified.

[0069] In this step, debugging includes ensuring that the light source component 1, the diffraction light waveguide bearing component, the rainbow pattern image acquisition component 3 and the rainbow pattern image detection component 4 are in proper positions, and pre-testing is performed to ensure that each component can work normally.

[0070] (2) Based on the preset longitude and / or latitude, the horizontal position of the light source assembly 1 relative to the diffraction light waveguide is adjusted, and the angle of the light source outlet 111 relative to the diffraction light waveguide 2 is adjusted at the same time to obtain the diffraction image of the diffraction light waveguide at different longitudes and / or latitudes.

[0071] In step (2), based on the environment in which the diffraction optical waveguide is located, the different longitudes and latitudes of the light source component 1 are adjusted, and the angle of the light source light outlet 111 relative to the diffraction optical waveguide 2 is synchronously adjusted, so that the diffraction optical waveguide diffracts at different longitudes and latitudes, thereby generating a diffraction image and obtaining a rainbow pattern.

[0072] (3) Turn on the light source 11 and perform a rainbow pattern test, and obtain rainbow pattern images at different longitudes and / or latitudes through the rainbow pattern image acquisition component 3 and the rainbow pattern image detection component 4.

[0073] (4) Adjust the diffraction optical waveguide to different longitudes or latitudes to obtain rainbow patterns under multiple different conditions.

[0074] (5) The rainbow pattern multi-dimensional information of different rainbow patterns is obtained by analyzing the rainbow pattern image detection component 4.

[0075] The multi-dimensional information of the rainbow pattern shown in the present invention includes but is not limited to the brightness, area size, intensity distribution, color distribution and azimuth of the rainbow pattern.

[0076] The present invention proposes a rainbow pattern detection system and method for a diffraction light waveguide, which gives priority to the rainbow pattern effect of the diffraction light waveguide at different longitudes and / or latitudes, overcoming the problem that the existing technology can only achieve single quantitative analysis. By adjusting the relative planar position relationship between the diffraction light waveguide and the light source, and simultaneously adjusting the position of the light source outlet to change the different longitudes of the light source to simulate the rising east and setting west of the natural environment light source, the adjustment of the different longitudes and / or latitudes of the natural light source is achieved, and the diffraction rainbow pattern phenomenon in different scenarios is comprehensively reflected from multiple dimensions. In this way, multi-dimensional information such as brightness, area size, intensity distribution, color distribution and azimuth of the rainbow pattern of the diffraction light waveguide is obtained, providing a technical reference for technical personnel in this field to comprehensively judge the rainbow pattern, with unexpected technical effects.

[0077] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A rainbow pattern detection system for a diffraction light waveguide, comprising a light source component, a diffraction light waveguide carrier component, a rainbow pattern image acquisition component, and a rainbow pattern image detection component; characterized in that: The light source in the light source assembly is configured to face the position where the diffraction light waveguide is located; The light source assembly includes a light source and a bracket. The light source is annular and has a light outlet. The light outlet changes position according to the change of longitude and / or latitude. The light source is slidably connected to the guide rail of the bracket to simulate the ambient light of the sun rising in the east and setting in the west. The diffraction optical waveguide supporting component is used to support the diffraction optical waveguide; The rainbow pattern image acquisition component is located on one side of the center of the eye box of the diffraction light waveguide, and is used to acquire rainbow pattern images of the diffraction light waveguide at different longitudes and / or latitudes and transmit them to the rainbow pattern detection image component; The rainbow pattern image detection component obtains multi-dimensional image information of the rainbow pattern based on the rainbow pattern images obtained at different longitudes and / or latitudes. The multi-dimensional image information includes the brightness, area, intensity distribution, color distribution and azimuth of the rainbow pattern generated by the diffraction light waveguide.

2. The rainbow pattern detection system of a diffraction optical waveguide according to claim 1, characterized in that: The longitude is defined as the angle formed between the center position of the diffraction optical waveguide, the light source, and the 0° scale line. Different longitude angles are formed by adjusting the position of the light outlet of the light source. The latitude is defined as the angle between the center position of the diffraction optical waveguide and the line connecting the plane position of the light source in the direction of the center position of the diffraction optical waveguide. Different latitude angles are formed by adjusting the relative distance between the diffraction optical waveguide and the light source in the direction of the center position.

3. The rainbow ripple detection system of a diffraction optical waveguide according to claim 2, characterized in that: The light source assembly includes a light source and a bracket. The light source is slidably connected to the guide rail of the bracket, so that the light source can slide on the guide rail of the bracket relative to the plane where the diffraction optical waveguide is located to adapt to different latitude environments where the diffraction optical waveguide is located.

4. The rainbow ripple detection system of a diffraction optical waveguide according to claim 3, characterized in that: The light source further comprises a shielding layer, which is adapted to the structure of the light source and is slidably arranged on the surface of the light source. The shielding layer is used to adjust the angle of the light outlet of the light source relative to the diffraction light waveguide.

5. The rainbow pattern detection system of a diffraction optical waveguide according to claim 4, characterized in that: The light source is point-shaped, with the observation center of the diffraction light waveguide as the center of the circle, and the angle of the light source relative to the diffraction light waveguide is adjusted through the shielding layer to achieve an angle selection of 0°~180° to simulate the rising and setting of ambient light in the east and west.

6. The rainbow ripple detection system of a diffraction optical waveguide according to claim 5, characterized in that: The shielding layer has scale lines, and the shielding layer has scale line marks corresponding to the position of the light source at the determined 0° scale line.

7. A method for detecting rainbow fringe in a diffractive optical waveguide, based on the rainbow fringe detection system for a diffractive optical waveguide according to any one of claims 1 to 6, the method comprising the following steps: (1) Provide the rainbow pattern detection system of the diffraction optical waveguide and conduct debugging to ensure that it is qualified; (2) Based on the preset longitude and / or latitude, the horizontal position of the light source assembly relative to the diffraction light waveguide is adjusted again, and the angle of the light source outlet relative to the diffraction light waveguide is adjusted simultaneously, so as to obtain the diffraction image of the diffraction light waveguide at different longitudes and / or latitudes; (3) Turning on the light source and performing a rainbow pattern test, obtaining rainbow pattern images at different longitudes and / or latitudes through the rainbow pattern image acquisition component and the rainbow pattern image detection component; (4) adjusting the diffraction optical waveguide to different longitude and / or latitude conditions to obtain rainbow pattern images under multiple different conditions; (5) The rainbow pattern multi-dimensional information of different rainbow patterns is obtained by analyzing the rainbow pattern image detection component.

8. The method for detecting rainbow patterns in a diffraction optical waveguide according to claim 7, wherein: The step (4) is defined in detail as follows: adjusting the angle formed between the center position of the diffraction optical waveguide and the light source and the 0° scale line, and simultaneously adjusting the position of the light outlet of the light source, thereby forming longitude angles of different sizes; adjusting the angle between the center position of the diffraction optical waveguide in the plane where the diffraction optical waveguide is located and the line connecting the plane position of the light source in the direction of the center position of the diffraction optical waveguide, thereby forming latitude angles of different sizes.

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