Illumination system and detection method

Abstract

The invention discloses an illumination system and a detection method, and the illumination system comprises an illumination assembly which comprises a plurality of illumination rings which are arranged in parallel in the longitudinal direction, each illumination ring comprises a plurality of illumination units which are arranged in an annular array, the illumination units are used for generating incident light, and the incident light forms reflected light after passing through an object to be detected; the receiving assembly is located on the inner side of the topmost lighting ring and used for receiving the reflected light. The illumination system is simple and reliable, can detect the to-be-detected object in multiple directions, and facilitates the realization of a multi-direction illumination scheme.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of lighting systems, and in particular to a lighting system and a detection method. Background Art

[0002] Microscopes are people's eyes for observing the microscopic world. They are widely used in many fields such as medicine and biology. The illumination method of microscopes can be divided into two categories: "transmission illumination" and "reflection illumination" according to the formation of the illumination beam. The former is suitable for transparent or semi-transparent objects to be inspected, while the latter is suitable for non-transparent objects to be inspected.

[0003] As the most competitive new solid-state light source, light-emitting diodes (LEDs) have the advantages of small size, low heat consumption, long life, fast response, and good color rendering. In recent years, with the reduction of LED manufacturing costs and the continuous improvement of application technology, LEDs have been widely used in the field of lighting and have gradually replaced traditional light sources in microscope illumination. However, the luminous characteristics of LEDs are different from those of traditional light sources. When used in microscope illumination systems, secondary optical design must be performed to achieve a circular light spot with a bright field of view, uniform illumination, and uniform color temperature, thereby improving system performance. Summary of the invention

[0004] The problem solved by the embodiments of the present invention is to provide a lighting system and a detection method, which are conducive to realizing a multi-directional lighting solution.

[0005] To solve the above problems, an embodiment of the present invention provides a lighting system, including: a lighting component, including a plurality of lighting rings arranged in parallel along the longitudinal direction, the lighting ring including a plurality of lighting units in a circular array, the lighting unit being used to generate incident light, and the incident light forms reflected light after passing through the object to be measured; a receiving component, located on the inner side of the topmost lighting ring, and the receiving component being used to receive the reflected light.

[0006] Optionally, in the lighting assembly, incident light generated by multiple lighting units converges at the same point; and the object to be measured is arranged at the point where the incident light converges.

[0007] Optionally, the centers of the multiple lighting rings are located on the same straight line; and the object to be measured is arranged on the straight line where the centers of the multiple lighting rings are located.

[0008] Optionally, the diameters of the multiple lighting rings gradually decrease from bottom to top.

[0009] Optionally, multiple lighting units are distributed on the same spherical surface.

[0010] Optionally, the lighting system also includes: a loading cover for loading the lighting component, the loading cover is a hollow hemispherical shape, the top of the loading cover has an opening, and the loading cover covers the object to be tested; multiple lighting units are distributed on the inner surface of the loading cover; the object to be tested is arranged at the center of the loading cover; and the receiving component is arranged above the opening.

[0011] Optionally, the angle between a line connecting any point on the loading cover and the center of the loading cover and the horizontal direction is taken as the set angle, and multiple lighting units are distributed on the loading cover within the range of the set angle being greater than 0° and less than 90°.

[0012] Optionally, a plurality of lighting units are distributed on the loading cover within a set angle range of 15° to 65°.

[0013] Optionally, in the lighting assembly, differences in set angles between adjacent lighting rings are all equal.

[0014] Optionally, the difference in set angles between adjacent lighting rings is 5° to 10°.

[0015] Optionally, in each lighting ring, multiple lighting units are evenly distributed.

[0016] Optionally, in each lighting ring, the angle between the lines connecting adjacent lighting units and the spherical center of the loading cover is 10° to 30°.

[0017] Optionally, the diameter of the bottom of the loading cover is 100 mm to 300 mm.

[0018] Optionally, the diameter of the top opening of the loading cover is 40 mm to 100 mm.

[0019] Optionally, the inner surface of the loading hood is blackened.

[0020] Optionally, the incident light is a collimated light beam.

[0021] Optionally, multiple lighting units can be controlled independently.

[0022] Accordingly, an embodiment of the present invention provides a detection method using the lighting system of an embodiment of the present invention, including: performing one or more lighting detections; the lighting detection includes: generating incident light through a lighting unit, and the incident light forms reflected light after passing through an object to be detected; and receiving the reflected light through a receiving component.

[0023] Optionally, in the lighting assembly, incident light generated by multiple lighting units converges at the same point; before performing one or more lighting tests, the object to be tested is placed at the point where the incident light converges.

[0024] Optionally, before performing one or more lighting tests, the method further includes: setting some or all lighting units in the lighting assembly as preset lighting units; in the steps of performing multiple lighting tests, each lighting test corresponds to one or more preset lighting units, and the lighting tests are performed in sequence, and the corresponding preset lighting units in each lighting test are controlled respectively.

[0025] Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

[0026] In the lighting system provided by the embodiment of the present invention, the lighting component includes a plurality of lighting rings arranged in parallel along the longitudinal direction, the lighting ring includes a plurality of lighting units in a circular array, the lighting unit is used to generate incident light, the incident light forms reflected light after passing through the object to be measured, and the receiving component is located on the inner side of the topmost lighting ring, and the receiving component is used to receive the reflected light; in the embodiment of the present invention, the lighting component includes a plurality of lighting rings arranged in parallel along the longitudinal direction, the lighting ring includes a plurality of lighting units in a circular array, that is, the lighting units in the lighting component are distributed at different heights in the longitudinal direction and are distributed in a circular manner in the transverse direction, then the lighting units in the lighting component do not need to be controlled by a mechanical motion mechanism, that is, more lighting directions (that is, incident light directions) can be achieved, the lighting system is simple and reliable, and can detect the object to be measured in more directions, which is conducive to realizing a multi-directional lighting solution.

[0027] In the detection method provided by the embodiment of the present invention, one or more lighting detections are performed, and the lighting detection includes: generating incident light through a lighting unit, the incident light forms reflected light after passing through the object to be detected, and receiving the reflected light through a receiving component; in the embodiment of the present invention, the lighting component includes a plurality of lighting rings arranged in parallel along the longitudinal direction, and the lighting ring includes a plurality of lighting units in a circular array, that is, the lighting units in the lighting component are distributed at different heights in the longitudinal direction and are distributed in a circular manner in the transverse direction. Then, the lighting units in the lighting component do not need to be controlled by a mechanical motion mechanism, that is, more lighting directions (that is, the direction of incident light) can be achieved, and the lighting system is simple and reliable. By performing one or more lighting detections, the object to be detected can be detected in more directions, which is conducive to realizing a multi-directional lighting detection solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram and light path diagram of a lighting system;

[0029] Figure 2 It is a structural schematic diagram and light path diagram of another lighting system;

[0030] Figures 3 to 7 It is a structural schematic diagram and a light path diagram of an embodiment of a lighting system of the present invention;

[0031] Figure 8 It is a flow chart corresponding to an embodiment of the detection method of the present invention. DETAILED DESCRIPTION

[0032] As can be seen from the background technology, it is difficult to implement a solution for multi-directional lighting detection. Now, in conjunction with a lighting system, the reasons why the current detection performance needs to be improved are analyzed.

[0033] Figure 1 It is a structural diagram of a lighting system.

[0034] refer to Figure 1 The lighting system includes: a loading ring 10, and a lighting unit 11 arranged on the loading ring 10, and the lighting unit 11 is used to generate incident light.

[0035] The surface microstructure of metal materials has an important influence on mechanical, corrosion and other properties. Microscopes are important tools used in the field of material surface research. Since metal materials are opaque, they need to be observed using reflected lighting, and the reflected light received by the receiving component depends directly on the incident light source and the surface morphology of the metal material. The etching method is used to make grains with different surface orientations have different characteristic morphologies. By changing the direction of the incident light source and obtaining the reflected light intensity of the morphology in different directions, the grain orientation distribution on the metal surface can be accurately mapped by combining image processing and big data algorithms.

[0036] Correspondingly, the lighting unit 11 loaded on the loading ring 10 illuminates the object to be tested at the same time. The lighting system is a directional lighting system for a reflective microscope, which is usually installed on the objective lens of the microscope to generate incident light to illuminate the object to be tested. The object to be tested reflects the incident light into the imaging system for human eye observation or camera collection. However, the lighting units 11 of the lighting system illuminate at the same time, and the number of lighting units 11 is limited, so only some directions can be illuminated. The incident light is difficult to cover a large lighting angle, resulting in insufficient reflected light information of the surface morphology, resulting in poor accuracy and precision of the results. Moreover, the incident light cannot quickly switch the lighting direction in a short time, and the collection efficiency of the reflected light is low, which makes it difficult to meet the research on the grain orientation distribution on the surface of metal materials.

[0037] Figure 2 It is a structural diagram of another lighting system.

[0038] refer to Figure 2 The lighting system includes: a lighting unit 20 for generating incident light, the incident light passes through the object to be measured 21 to generate reflected light; a mechanical motion mechanism for controlling the movement of the lighting unit 20; and a receiving unit 30 for receiving the reflected light.

[0039] The mechanical motion mechanism controls the movement of the lighting unit 20 to realize lighting of the object to be measured 21 in multiple directions. However, the control method of the mechanical motion mechanism is also relatively complicated. Each time lighting in different directions is realized, the mechanical motion mechanism needs to be adjusted, which is inconvenient to apply in actual products.

[0040] In order to solve the technical problem, an embodiment of the present invention provides a lighting system, including: a lighting assembly, including a plurality of lighting rings arranged in parallel along the longitudinal direction, the lighting ring including a plurality of lighting units in a circular array, the lighting unit being used to generate incident light, and the incident light forms reflected light after passing through the object to be measured; a receiving assembly, located on the inner side of the topmost lighting ring, and the receiving assembly being used to receive the reflected light.

[0041] In an embodiment of the present invention, the lighting assembly includes a plurality of lighting rings arranged in parallel along the longitudinal direction, and the lighting ring includes a plurality of lighting units in a circular array. That is to say, the lighting units in the lighting assembly are distributed at different heights in the longitudinal direction and are distributed in a circular manner in the transverse direction. Therefore, the lighting units in the lighting assembly do not need to be controlled by a mechanical motion mechanism, that is, more lighting directions (i.e., directions of incident light) can be achieved. The lighting system is simple and reliable, and can detect objects to be tested in more directions, which is conducive to realizing a multi-directional lighting solution.

[0042] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] refer to Figures 3 to 7 , is a schematic structural diagram of a first embodiment of a lighting system of the present invention, Figure 3 A three-dimensional diagram of the lighting system. Figure 4 This is a bottom view of the lighting system. For clarity, Figure 5 Only the loading hood is shown, Figure 6 Only the loading cover and part of the lighting unit are shown. Figure 7 Only the loading hood and part of the lighting unit are shown in the top view.

[0044] Combined with reference Figures 3 to 7 The lighting system includes: a lighting assembly, including a plurality of Figure 3 The lighting ring 120 is arranged in parallel (as shown in the Z direction), and the lighting ring 120 includes a plurality of lighting units 110 in a ring array, and the lighting unit 110 is used to generate incident light, and the incident light forms reflected light after passing through the object to be measured 200; a receiving component is located on the inner side of the topmost lighting ring 120, and the receiving component is used to receive the reflected light.

[0045] The lighting assembly is used to emit incident light.

[0046] In this embodiment, the lighting assembly includes a plurality of lighting rings 120 arranged in parallel along the longitudinal direction. The lighting ring 120 includes a plurality of lighting units 110 in a circular array. Each lighting unit 110 can emit incident light individually, thereby realizing illumination of the object to be measured 200 in different directions. Moreover, the circular array of lighting units 110 in the lighting ring 120 can realize 360° all-round illumination of the object to be measured 200.

[0047] In this embodiment, the lighting assembly includes a plurality of lighting rings 120 arranged in parallel along the longitudinal direction, and the lighting ring 120 includes a plurality of lighting units 110 in a circular array. That is to say, the lighting units 110 in the lighting assembly are distributed at different heights in the longitudinal direction and are distributed in a circular manner in the transverse direction. Therefore, the lighting units 110 in the lighting assembly do not need to be controlled by a mechanical motion mechanism, and can achieve more lighting directions (i.e., the direction of incident light). The lighting system is simple and reliable, and can detect the object to be tested 200 in more directions, which is conducive to realizing a multi-directional lighting solution.

[0048] In this embodiment, in the lighting assembly, the incident light generated by the multiple lighting units 110 converges at the same point.

[0049] The incident light generated by the multiple lighting units 110 converges at the same point, so that the multiple lighting units 110 can illuminate the same object to be tested 200 , that is, for each object to be tested 200 , illumination in different directions can be achieved.

[0050] Correspondingly, in this embodiment, the object to be measured 200 is disposed at the point where the incident light converges.

[0051] In this embodiment, the centers of the plurality of lighting rings 120 are located on the same straight line.

[0052] The centers of the multiple lighting rings 120 are located on the same straight line, and the multiple lighting rings 120 are arranged axially symmetrically, so that the lighting assembly has good symmetry. When illuminating the object 200, the object 200 can be evenly illuminated in all directions around it, so that the object 200 can be more fully detected.

[0053] Correspondingly, in this embodiment, the object to be measured 200 is disposed on a straight line where the centers of the plurality of illumination rings 120 are located.

[0054] The object under test 200 is arranged on the straight line where the centers of the multiple lighting rings 120 are located, so that the object under test 200 is located at the center of the multiple lighting rings 120, which is beneficial for uniform illumination in all directions around the object under test 200, thereby allowing the object under test 200 to be more fully detected.

[0055] In this embodiment, the diameters of the plurality of lighting rings 120 gradually decrease from bottom to top.

[0056] In the lighting assembly, the diameters of the multiple lighting rings 120 arranged in parallel in the longitudinal direction gradually decrease from bottom to top, that is, the multiple lighting rings 120 gradually shrink from bottom to top, and the lighting assembly formed is an inverted bowl-shaped morphology, so that when the lighting unit 110 illuminates the object to be tested 200 located in the center, the incident light generated by the lighting unit 110 in the lighting ring 120 located above will not be blocked by the lighting unit 110 in the lighting ring 120 located below, so that the incident light illuminates the object to be tested 200 more fully, and the lighting units 110 do not interfere with each other.

[0057] In this embodiment, a plurality of lighting units 110 are distributed on the same spherical surface.

[0058] The multiple lighting units 110 are distributed on the same spherical surface, so that the centers of the multiple lighting rings 120 arranged in parallel longitudinally are located on the same straight line, and the diameters of the multiple lighting rings 120 gradually decrease from bottom to top. At the same time, the multiple lighting units 110 are distributed on the same spherical surface, and a lighting component with good symmetry is obtained, and it is easy to realize a solution in which each lighting unit 110 illuminates the same point. In addition, a lighting component with good symmetry is easy to obtain and is relatively simple to form.

[0059] In this embodiment, the incident light is a collimated light beam.

[0060] The incident light is a collimated light beam, which refers to a parallel light beam with the same direction. If the incident light is a collimated light beam, the direction of the incident light is more consistent, and the light intensity is more constant during the propagation of the incident light, so that the incident light generated by the lighting unit 110 has better accuracy and reliability during the lighting detection process.

[0061] In this embodiment, the lighting unit 110 is a laser.

[0062] The illumination unit 110 is a laser, so that it is easy to obtain incident light of a collimated beam.

[0063] It should be noted that, in this embodiment, the illumination intensity of the incident light of each lighting unit 110 should not be too small. If the illumination intensity of the incident light of each lighting unit 110 is too small, the illumination effect on the object to be tested 200 is poor, and the corresponding reflected light is weak, making it difficult for the receiving component to obtain relatively clear information about the object to be tested 200, thereby affecting the detection of the object to be tested 200. For this reason, in this embodiment, the illumination intensity of the incident light of each lighting unit 110 is greater than or equal to 1000 Lux.

[0064] In this embodiment, the multiple lighting units 110 can be controlled independently.

[0065] Multiple lighting units 110 can be independently controlled, that is, each lighting unit 110 has a separately controlled switching circuit for separately controlling the switch of each lighting unit 110, so that each lighting unit 110 can be separately controlled to illuminate the object to be tested 200, specifically, the switch of each lighting unit 110 and the energy of each incident light generated can be separately controlled.

[0066] The plurality of lighting units 110 can be independently controlled, so that the lighting units 110 can be individually controlled according to demand to obtain the angle at which the object to be tested 200 needs to be illuminated, so that the object to be tested 200 can be independently tested at various angles.

[0067] It should be noted that the lighting system of this embodiment is particularly suitable for use in the field of materials research using microscopes. Microscopes are important tools used in the field of materials research. Since metal materials are opaque, they need to be observed using reflective lighting. At the same time, since many properties of metal materials are closely related to the crystallographic orientation of surface grains, it is necessary to illuminate in different directions, extract information from different directions, and then perform comprehensive processing to quickly evaluate the microstructure and properties of metal materials. For example, the crystallographic orientation of the surface grains of a metal material is an important microstructural feature, which has a significant impact on the mechanical, corrosion and other properties of the material. By using multi-directional illumination of an optical microscope, the different characteristic morphologies of grains with different orientations on the metal surface can be utilized to obtain the reflected light generated by surface grains with different orientations in various directions in a very short time. Combined with the algorithm, the surface grain orientation distribution of the metal can be accurately mapped. In the illumination system of this embodiment, multiple illumination units 110 can be independently controlled. When inspecting the metal material object 200 to be tested, each illumination unit 110 is independently controlled to illuminate each direction of the metal material object 200 to be tested, thereby completing a full-range scan of the metal material object 200 to be tested, thereby obtaining the surface grain orientation distribution of the metal material object 200 to be tested.

[0068] In this embodiment, the lighting system further includes: a loading cover 100 for loading the lighting assembly. The loading cover 100 is in a hollow hemispherical shape. The top of the loading cover 100 has an opening 130 . The loading cover 100 covers the object to be tested 200 .

[0069] The loading cover 100 is used to load the lighting assembly. A plurality of lighting units 110 are arranged on the loading cover 100 . Meanwhile, the circuits for controlling the lighting units 110 are also integrated in the loading cover 100 .

[0070] In this embodiment, the loading cover 100 is in a hollow hemispherical shape, so that the lighting units 110 loaded on the loading cover 100 are arranged in a hemispherical shape, realizing a solution in which multiple lighting units 110 are distributed on the same spherical surface.

[0071] In this embodiment, the top of the loading cover 100 has an opening 130 , and the opening 130 is used to provide a space for placing a receiving component, so that the incident light and the reflected light generated by the object to be measured 200 enter the receiving component through the opening 130 .

[0072] Accordingly, in this embodiment, the loading cover 100 covers the object to be tested 200, so that the illumination and detection of the object to be tested 200 are completed inside the loading cover 100, the dispersion and weakening of light are reduced, and the illumination and detection with higher accuracy are achieved.

[0073] In this embodiment, the material of the loading cover 100 is not limited. For example, the loading cover 100 can be made of metal or plastic.

[0074] In this embodiment, a plurality of lighting units 110 are distributed on the inner surface of the loading cover 100 .

[0075] A plurality of lighting units 110 are distributed on the inner surface of the loading cover 100 , so as to illuminate and detect the object to be tested 200 inside the loading cover 100 .

[0076] In this embodiment, the object to be tested 200 is disposed at the center of the loading cover 100 .

[0077] The object under test 200 is disposed at the center of the loading cover 100 , so that the object under test 200 is located at the center of multiple lighting components, which is conducive to uniform illumination of all directions around the object under test 200, so that the object under test 200 can be more fully detected.

[0078] In this embodiment, the angle between the line connecting any point on the loading cover 100 and the center of the loading cover 100 and the horizontal direction is the set angle θ, and multiple lighting units 110 are distributed on the loading cover 100 within the range of the set angle θ greater than 0° and less than 90°.

[0079] The multiple lighting units 110 are distributed on the loading cover 100 within a range where the angle θ is set to be greater than 0° and less than 90°, so that the multiple lighting units 110 are arranged in a hemispherical shape and space for forming an opening 130 can be left at the top of the loading cover 100 .

[0080] It should be noted that, in this embodiment, the set angle θ of the range in which the multiple lighting units 110 are distributed in the loading cover 100 should not be too large or too small. If the set angle θ of the range in which the multiple lighting units 110 are distributed in the loading cover 100 is too large, it is easy to cause the space left at the top of the loading cover 100 for forming the opening 130 to be too small, and it is difficult to form an opening 130 of sufficient size, so that when the receiving component is placed at the opening 130, it is difficult for the receiving component to receive enough reflected light, and then it is difficult to perform a good detection of the object to be detected 200; if the set angle θ of the range in which the multiple lighting units 110 are distributed in the loading cover 100 is too small, it is easy to generate some incident light that is unnecessary for detection, which easily causes the received reflected light to be uncontrollable. For this reason, in this embodiment, the multiple lighting units 110 are distributed on the loading cover 100 in the range of the set angle θ of 15° to 65°.

[0081] In this embodiment, in the lighting assembly, the differences β of the set included angles θ between adjacent lighting rings 120 are all equal.

[0082] If the difference β of the set angles θ between adjacent lighting rings 120 is equal, the multiple lighting rings 120 distributed from bottom to top in the longitudinal direction are evenly distributed, and more incident light irradiation angles can be uniformly achieved in the longitudinal direction, thereby achieving uniform illumination and detection of the object to be tested 200 at multiple angles in the longitudinal direction.

[0083] It should be noted that, in this embodiment, the difference β of the set angles θ between adjacent lighting rings 120 should not be too large or too small. If the difference β of the set angles θ between adjacent lighting rings 120 is too large, the multiple lighting rings 120 distributed from bottom to top in the longitudinal direction are relatively sparsely distributed, and the number of lighting rings 120 is too small, making it difficult to irradiate the object 200 with incident light of the set angles θ, thereby making it difficult to illuminate and detect the object 200 at multiple angles in the longitudinal direction; if the difference β of the set angles θ between adjacent lighting rings 120 is too small, the multiple lighting rings 120 distributed from bottom to top in the longitudinal direction are relatively densely distributed, and the number of lighting rings 120 is too large, which is not conducive to the detection of the object 200 in the loading cover. 100, it is difficult to set the lighting unit 110, and it is difficult to form a lighting assembly with a relatively accurate distribution position of each lighting unit 110. Moreover, the difference β of the set angle θ between adjacent lighting rings 120 is too small. The detection results of adjacent incident light with the set angle θ within a smaller deviation range in the longitudinal direction on the object to be tested 200 are similar, and the incident light has more overlapping illumination on the object to be tested 200. Therefore, if the difference β of the set angle θ between adjacent lighting rings 120 is too small, it is easy to cause lengthy system operations and unnecessary waste of computing power. For this reason, in this embodiment, the difference β of the set angle θ between adjacent lighting rings 120 is 5° to 10°.

[0084] In this embodiment, in each lighting ring 120 , a plurality of lighting units 110 are evenly distributed.

[0085] In each lighting ring 120 , the multiple lighting units 110 are evenly distributed, which can evenly achieve more incident light irradiation angles in the lateral direction, thereby achieving even illumination and detection of the object to be tested 200 at multiple angles in the lateral direction.

[0086] It should be noted that, in the present embodiment, in each lighting ring 120, the angle α between the lines connecting adjacent lighting units 110 and the spherical center of the loading cover 100 should not be too large or too small. If the angle α between the lines connecting adjacent lighting units 110 and the spherical center of the loading cover 100 in each lighting ring 120 is too large, the distribution of the multiple lighting units 110 distributed along the transverse annular array is relatively sparse, and the number of lighting units 110 is too small, making it difficult to achieve incident light illumination at more angles on the object to be tested 200 in the transverse direction, thereby making it difficult to achieve multi-angle lighting and detection of the object to be tested 200 in the transverse direction; if the angle α between the lines connecting adjacent lighting units 110 and the spherical center of the loading cover 100 in each lighting ring 120 is too small, the distribution of the multiple lighting units 110 distributed along the transverse annular array is relatively dense, and the number of lighting units 110 is too small. Too many 110 units make it difficult to set the lighting units 110 on the loading cover 100, and it is difficult to form a lighting assembly with a relatively accurate distribution position of each lighting unit 110. Moreover, the angle α between the lines connecting adjacent lighting units 110 and the spherical center of the loading cover 100 is too small. In the lateral direction, the detection results of adjacent incident light with an angle α within a small deviation range on the object to be tested 200 are similar, and the incident light has a lot of overlapping illumination on the object to be tested 200. Therefore, if the angle α between the lines connecting the lighting units 110 and the spherical center of the loading cover 100 is too small, it is easy to cause lengthy system operations and unnecessary waste of computing power. For this reason, in this embodiment, in each lighting ring 120, the angle α between the lines connecting adjacent lighting units 110 and the spherical center of the loading cover 100 is 10° to 30°.

[0087] In this embodiment, the inner surface of the loading cover 100 is subjected to blackening treatment.

[0088] The inner surface of the loading cover 100 is blackened, so that the inner surface of the loading cover 100 is black, which is beneficial to reduce the loss of incident light, thereby further improving the accuracy of lighting and detecting the object to be measured 200 inside the loading cover 100.

[0089] It should be noted that, in this embodiment, the diameter size d1 of the bottom of the loading cover 100 should not be too large or too small. If the diameter size d1 of the bottom of the loading cover 100 is too large, it is easy to cause unnecessary waste, and also cause the space inside the loading cover 100 to be too large, which is easy to cause the distance between the lighting unit 110 and the object to be tested 200 in the loading cover 100 to be too large, and the distance between the object to be tested 200 and the receiving component to be too large, which is easy to cause the loss of incident light and reflected light to be too large, affecting the accuracy of lighting and detecting the object to be tested 200; if the diameter size d1 of the bottom of the loading cover 100 is too small, it is easy to cause the loading cover 100 to be too small, which makes it difficult to set the lighting unit 110 on the loading cover 100, and it is also easy to cause the space inside the loading cover 100 to be too small, which makes it difficult to illuminate and detect the object to be tested 200 inside the loading cover 100. For this reason, in this embodiment, the diameter size d1 of the bottom of the loading cover 100 is 100mm to 300mm.

[0090] It should also be noted that, in this embodiment, the diameter size d2 of the top opening 130 of the loading cover 100 should not be too large or too small. If the diameter size d2 of the top opening 130 of the loading cover 100 is too large, the opening 130 occupies too much of the surface of the loading cover 100, which may easily lead to the remaining surface of the loading cover 100 for arranging the lighting unit 110 being too small, which may cause difficulty in arranging the lighting unit 110 on the loading cover 100, and may also easily lead to excessive loss of reflected light, which may cause the receiving component to be difficult to receive enough reflected light, thus affecting the detection of the object to be detected 200; if the diameter size d2 of the top opening 130 of the loading cover 100 is too small, it may be difficult to leave enough space for arranging the receiving component at the opening 130, which may easily lead to the receiving component being difficult to obtain the reflected light more fully, and further cause the receiving component to be difficult to perform more effective detection of the object to be detected 200. For this reason, in this embodiment, the diameter size d2 of the top opening 130 of the loading cover 100 is 40 mm to 100 mm.

[0091] The receiving component is used to receive the reflected light passing through the object to be tested 200 , so as to enable the illumination system to detect the object to be tested 200 .

[0092] In this embodiment, the receiving component includes an optical objective lens, which is used to receive the reflected light of the object to be measured 200 and image it on the photodetector.

[0093] In this embodiment, the receiving component includes a photodetector, which is suitable for converting an optical signal into an electrical signal. For example, the photodetector is a charge coupled device (CCD) or a CMOS image sensor.

[0094] In this embodiment, the receiving component is located inside the topmost lighting ring 120 , so as to receive reflected light formed by the incident light generated by each lighting unit 110 .

[0095] Correspondingly, in this embodiment, the receiving component is disposed above the opening 130 .

[0096] The receiving assembly is disposed above the opening 130 so as to evenly receive the reflected light formed by the incident light generated by each lighting unit 110 .

[0097] Figure 8 It is a flow chart corresponding to an embodiment of the detection method of the present invention.

[0098] refer to Figure 8 The detection method performed by the lighting system in the aforementioned embodiment includes:

[0099] Execute step S1: perform one or more lighting tests;

[0100] The step S1 of illumination detection includes: executing step S11: generating incident light through an illumination unit, and the incident light forms reflected light after passing through the object to be detected; executing step S12: receiving the reflected light through a receiving component.

[0101] It should be noted that, in this embodiment, the detailed description of the lighting system refers to the aforementioned embodiment and will not be repeated here.

[0102] In this embodiment, in the lighting assembly, incident light generated by multiple lighting units converges at the same point.

[0103] The incident light generated by the multiple lighting units converges at the same point, so that the multiple lighting units can illuminate the same object to be tested, that is, for each object to be tested, illumination in different directions can be achieved.

[0104] Accordingly, in this embodiment, before performing one or more illumination tests, the object to be tested is placed at a point where the incident light converges.

[0105] In this embodiment, before performing one or more lighting tests, the method further includes: setting some or all lighting units in the lighting assembly as preset lighting units.

[0106] When performing subsequent lighting inspections, different ranges or quantities of lighting units need to be turned on according to different actual needs. In this case, some or all of the lighting units required in the lighting assembly are set as preset lighting units to prepare for the subsequent lighting inspections, which is beneficial to reduce unnecessary waste caused by the subsequent turning on of unnecessary lighting units.

[0107] In this embodiment, step S1 is executed: performing one or more lighting detections.

[0108] In this embodiment, the detection method is used to irradiate the object to be detected in various directions, so as to detect the object to be detected in various directions.

[0109] In this embodiment, step S1 of illumination detection includes: executing step S11: generating incident light through an illumination unit, and the incident light forms reflected light after passing through the object to be detected; executing step S12: receiving the reflected light through a receiving component.

[0110] The incident light is used to illuminate the object to be tested, forming reflected light, so that the receiving component receives the reflected light to complete the detection of the object to be tested.

[0111] In this embodiment, the lighting assembly includes a plurality of lighting rings arranged in parallel along the longitudinal direction. The lighting ring includes a plurality of lighting units in a circular array. Each lighting unit can emit incident light individually, thereby realizing lighting of the object to be measured in different directions. Moreover, the circular array of lighting units in the lighting ring can realize 360° all-round illumination of the object to be measured.

[0112] In the detection method provided in this embodiment, one or more lighting detections are performed, and the lighting detection includes: generating incident light through a lighting unit, the incident light forms reflected light after passing through the object to be detected, and receiving the reflected light through a receiving component; in the embodiment of the present invention, the lighting component includes a plurality of lighting rings arranged in parallel along the longitudinal direction, and the lighting ring includes a plurality of lighting units in a circular array, that is, the lighting units in the lighting component are distributed at different heights in the longitudinal direction and are distributed in a circular manner in the transverse direction. Then, the lighting units in the lighting component do not need to be controlled by a mechanical motion mechanism, that is, more lighting directions (that is, the direction of incident light) can be achieved, and the lighting system is simple and reliable. By performing one or more lighting detections, the object to be detected can be detected in more directions, which is conducive to realizing a multi-directional lighting detection solution.

[0113] In this embodiment, in the steps of performing multiple lighting detections, each lighting detection corresponds to one or more preset lighting units, and the lighting detections are performed sequentially, and the corresponding preset lighting units in each lighting detection are controlled respectively.

[0114] In the steps of performing multiple lighting tests, each lighting test corresponds to one or more preset lighting units, and the lighting tests are performed in sequence, and the corresponding preset lighting units in each lighting test are controlled separately. That is to say, each time the lighting test is performed, the preset lighting unit required for the current lighting test is turned on separately, and the preset lighting units used in each lighting test are controlled independently of each other, so that the object to be tested can be independently tested at all angles.

[0115] As an example, a preset lighting unit is turned on separately for each lighting detection, and each preset lighting unit is turned on in sequence until all the preset lighting units are turned on to complete the detection of the object to be detected.

[0116] As another example, multiple preset lighting units are individually turned on for each lighting detection, and multiple lighting detections are performed in sequence until all the preset lighting units are turned on to complete the detection of the object to be detected.

[0117] Specifically, in this embodiment, multiple lighting units can be independently controlled, that is, each lighting unit has an individually controlled switching circuit for individually controlling the switch of each lighting unit, so that each lighting unit can be individually controlled to illuminate the object to be tested, specifically, the switch of each lighting unit and the energy of each incident light generated can be individually controlled.

[0118] Multiple lighting units can be controlled independently, so that the lighting units can be controlled individually according to needs to obtain the angle at which the object to be tested needs to be illuminated, so that the object to be tested can be independently tested at various angles.

[0119] It should be noted that the detection method of this embodiment is particularly suitable for the field of material research applied to microscopes. Microscopes are important tools used in the field of material research. Since metal materials are opaque, they need to be observed with reflective lighting. At the same time, since many properties of metal materials are closely related to the crystallographic orientation of surface grains, it is necessary to illuminate in different directions, extract information in different directions, and then perform comprehensive processing, so as to quickly evaluate the microstructure and performance of metal materials. For example, the crystallographic orientation of surface grains of metal materials is an important microstructural feature, which has an important impact on the mechanical, corrosion and other properties of the material. By using multi-directional illumination of an optical microscope, the different characteristic morphologies of grains with different orientations on the metal surface can be used to obtain the reflected light generated by grains with different orientations in various directions in a very short time. Combined with the algorithm, the surface grain orientation distribution of the metal can be accurately drawn. In the detection method of this embodiment, multiple lighting units can be independently controlled. When detecting the object to be tested of the metal material, each lighting unit is controlled separately, and each direction of the object to be tested of the metal material is illuminated separately, and the full-range scanning of the object to be tested of the metal material is completed, so as to obtain the surface grain orientation distribution of the object to be tested of the metal material.

[0120] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A lighting system, characterized in that: include: An illumination assembly, comprising a plurality of illumination rings arranged in parallel along the longitudinal direction, wherein the illumination ring comprises a plurality of illumination units in a circular array, wherein the illumination units are used to generate incident light, and the incident light forms reflected light after passing through the object to be measured; A receiving component is located inside the topmost lighting ring, and is used to receive the reflected light.

2. The lighting system according to claim 1, characterized in that In the lighting assembly, incident light generated by a plurality of the lighting units converges at the same point; The object to be tested is arranged at the point where the incident light converges.

3. The lighting system according to claim 2, characterized in that The centers of the plurality of lighting rings are located on the same straight line; The object to be tested is arranged on a straight line where the centers of the plurality of illumination rings are located.

4. The lighting system according to claim 2, characterized in that The diameters of the plurality of lighting rings gradually decrease from bottom to top.

5. The lighting system according to claim 4, characterized in that The plurality of lighting units are distributed on the same spherical surface.

6. The lighting system according to claim 5, characterized in that The lighting system further comprises: a loading cover for loading the lighting assembly, the loading cover being in a hollow hemispherical shape, having an opening at the top thereof, and covering the object to be tested; A plurality of the lighting units are distributed on the inner surface of the loading cover; The object to be tested is arranged at the spherical center of the loading cover; The receiving component is arranged above the opening.

7. The lighting system according to claim 6, characterized in that The angle between the line connecting any point on the loading cover and the center of the loading cover and the horizontal direction is taken as the set angle, and the plurality of lighting units are distributed on the loading cover within the range of the set angle being greater than 0° and less than 90°.

8. The lighting system according to claim 7, characterized in that The plurality of lighting units are distributed on the loading cover within a range of a set angle of 15° to 65°.

9. The lighting system according to claim 7 or 8, characterized in that: In the lighting assembly, the differences in the set angles between adjacent lighting rings are all equal.

10. The lighting system according to claim 9, characterized in that The difference between the set angles of adjacent lighting rings is 5° to 10°.

11. The lighting system according to claim 7, characterized in that In each of the lighting rings, a plurality of the lighting units are evenly distributed.

12. The lighting system according to claim 11, characterized in that In each of the lighting rings, the angle between the lines connecting the adjacent lighting units and the spherical center of the loading cover is 10° to 30°.

13. The lighting system according to claim 7, characterized in that The diameter of the bottom of the loading cover is 100 mm to 300 mm.

14. The lighting system according to claim 7, characterized in that The diameter of the top opening of the loading cover is 40 mm to 100 mm.

15. The lighting system according to claim 7, characterized in that The inner surface of the loading cover is subjected to blackening treatment.

16. The lighting system according to claim 1, characterized in that The incident light is a collimated light beam.

17. The lighting system according to claim 1, characterized in that The plurality of lighting units can be controlled independently.

18. A detection method using the lighting system according to any one of claims 1 to 17, characterized in that: include: Conduct one or more lighting tests; The illumination detection comprises: generating incident light by the illumination unit, and the incident light forms reflected light after passing through the object to be detected; The reflected light is received by the receiving component.

19. The detection method according to claim 18, characterized in that: In the lighting assembly, incident light generated by a plurality of the lighting units converges at the same point; Before performing one or more illumination tests, the object to be tested is placed at a point where the incident light converges.

20. The detection method according to claim 18, characterized in that: Before performing one or more lighting tests, the method further includes: setting some or all lighting units in the lighting assembly as preset lighting units; In the step of performing the lighting detection multiple times, each lighting detection corresponds to one or more preset lighting units, and the lighting detection is performed sequentially, and the corresponding preset lighting units in each lighting detection are controlled respectively.

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