A high-brightness compact light source module

Abstract

The present application relates to the field of optical detection technology, and in particular to a group of high-brightness compact light source modules. In order to address the shortcomings of existing light source modules, such as limited lighting brightness or bloated structure, the solution adopted is as follows: comprising a mounting base; the mounting base is equipped with a light source assembly and an optical path assembly; the optical path assembly includes an imaging channel; the imaging direction of the line scan camera is the Z axis, and the depth direction of the imaging channel is the same as the Z axis; the optical path assembly includes a receiving end group, an output end group, and a light propagation segment group; two groups of output end groups, or a shared group of receiving end groups, or a separate group of receiving end groups; along the direction perpendicular to the Z axis, the two groups of output end groups are symmetrically distributed about the imaging channel, and each group of output end groups is flat. Through the above solution, the light source module has good applicability and is suitable for all detection equipment that requires a line scan camera. It is compact and saves installation space, and can provide a sufficiently large lighting brightness for the line scan camera to ensure a good detection effect.

Description

Technical Field

[0001] The present application relates to the field of optical detection technology, and in particular to a group of high-brightness compact light source modules. Background Art

[0002] The electronics industry continues to develop, and the circuit boards used in various electronic devices are becoming increasingly diverse. These boards include printed circuit boards, flexible printed circuit boards (FPCs), and chip package carriers (IC carriers). As electronic products continue to become smaller and thinner, their components are also becoming smaller, and more circuits and electronic components are being packed into a unit area or volume. This poses significant challenges to automated optical inspection (AOI).

[0003] Regarding automatic optical inspection, it is the most important part of quality control. It must ensure that defects can be accurately detected and a certain shipment volume must be guaranteed. The imaging system of automatic optical inspection equipment is generally composed of a line scan camera and a specific light source module. The lighting center of the light source module coincides with the imaging center of the line scan camera. The light source module illuminates the surface of the product being tested, so that the line scan camera can clearly see the various features on the surface of the product. By adjusting the brightness of the light source module, the imaging effect of the line scan camera can be optimized. In order to ensure the image effect, it is necessary to ensure that there is enough light input, that is, the light source needs to have sufficient brightness. At present, in order to ensure detection efficiency, the upper and lower sides of the circuit board are generally inspected at the same time, so light sources need to be installed at both the upper and lower positions of the circuit board. More specifically, the currently commonly used light source modules can be divided into the following two categories:

[0004] 1. Multi-angle line light source, such as Figure 6 As shown, this light source provides illumination from multiple angles, helping to clearly reveal various defects on circuit boards. However, on the one hand, this light source is large, which makes installation space limited in confined areas (such as the bottom of a conveyor belt). On the other hand, the light source is located far from the product being inspected, making it difficult to provide the brightness required for line scan cameras. Therefore, higher-brightness LEDs are required. However, prolonged operation increases power consumption and can lead to poor heat dissipation, potentially damaging circuits.

[0005] 2. High-brightness linear light source, Figure 7 This is a schematic diagram of the structure of a high-brightness linear light source. This light source has sufficient brightness. However, the lighting angle is limited. To meet the requirements of multi-angle lighting, multiple high-brightness linear light sources must be combined. This combined lighting method is costly and difficult.

[0006] Therefore, there is still a need to improve the existing light source modules to solve the shortcomings of the existing light source modules, such as limited lighting brightness or bulky structure. Summary of the Invention

[0007] The present invention provides a set of compact light source modules with high brightness to solve the shortcomings of existing light source modules such as limited lighting brightness or bulky structure.

[0008] To achieve the above objectives, the present invention provides a high-brightness compact light source module, comprising a mounting base; the mounting base is mounted with a light source assembly and an optical path assembly; the optical path assembly includes an imaging channel for a line scan camera to capture images along a straight line; the imaging direction of the line scan camera is defined as the Z axis, and the depth direction of the imaging channel is the same as the Z axis;

[0009] The optical path component includes at least one group of receiving end groups, two groups of output end groups, and a light propagation segment group connecting one group of the receiving end groups and at least one group of the output end groups; the two groups of output end groups either share one group of the receiving end groups or each use a separate group of the receiving end groups; along the direction perpendicular to the Z-axis direction, the two groups of the output end groups are symmetrically distributed about the imaging channel, and each group of the output end groups is flat; wherein, the receiving end group is used to receive the illumination light emitted by the light source assembly, and the light propagation segment group is used to propagate the illumination light received by the receiving end group to at least one group of the output end groups; each group of the output end groups is used to output the illumination light propagated by the light propagation segment group, and the output illumination light is emitted along the oblique direction toward the test surface of the product to be tested.

[0010] Optionally, along the Z-axis direction, the imaging channel includes an entrance end and an exit end arranged in sequence; compared with the exit end, the entrance end is farther away from the product to be tested; the mounting base is also equipped with a coaxial light source; the coaxial light source is used to provide compensation light to the test surface of the product to be tested; the coaxial light source includes a first light outlet and a second light outlet that are opposite to each other and arranged in sequence along the Z-axis direction; the first light outlet is located between the second light outlet and the imaging channel; the first light outlet is directly opposite to the entrance end; wherein, the first light outlet is for the compensation light to be emitted outward toward the test surface of the product to be tested, and the second light outlet is for the light reflected by the test surface of the product to be tested to be emitted outward toward the lens of the line scan camera.

[0011] Optionally, the two groups of output end groups each use a separate group of receiving end groups; the light propagation segment group connects a group of receiving end groups and a group of output end groups; the optical path component is composed of two groups of rigid light guide plate groups; each group of rigid light guide plate groups is composed of a group of receiving end groups, a group of output end groups and a group of light propagation segment groups; along the direction perpendicular to the Z-axis direction, the two groups of rigid light guide plate groups are distributed laterally and cooperate to form the imaging channel.

[0012] Optionally, the arrangement direction of the two groups of rigid light guide plate groups is the Y-axis direction; the light source assembly includes two groups of light-emitting side groups distributed transversely along the Y-axis direction; the light-emitting side groups correspond one to one with the rigid light guide plate groups;

[0013] Among the two groups of the light-emitting side groups and the two groups of the hard light guide plate groups, one group of the light-emitting side groups and the corresponding group of the hard light guide plate groups constitute a first unit, and the other group of the light-emitting side groups and the corresponding group of the hard light guide plate groups constitute a second unit; the mounting seat includes two groups of sub-base bodies that are laterally distributed along the Y-axis direction; the upper ends of the two groups of sub-base bodies are fixed to the coaxial light source; the first light outlet is located between the two groups of sub-base bodies; one of the opposite side surfaces of the two groups of sub-base bodies is installed with the first unit, and the other is installed with the second unit.

[0014] Optionally, each group of the rigid light guide plate groups is composed of multiple groups of rigid light guide plates distributed along the Z-axis direction; each group of the receiving end groups is composed of multiple groups of receiving ends; each group of the output end groups is composed of multiple groups of output ends; each group of the light propagation segment groups is composed of multiple groups of light propagation segments; each group of the rigid light guide plates is composed of a group of the receiving ends, a group of the light propagation segments and a group of the output ends; each group of the rigid light guide plates constituting the same group of the rigid light guide plate groups extends to the test surface of the product to be tested at different angles.

[0015] Optionally, the hard light guide plate is made of any one of acrylic material, light-conducting grade polymer, aerogel, and optical fiber material.

[0016] Optionally, there are multiple groups of optical path components; each group of optical path components has a different lighting area and / or lighting brightness from any other group of optical path components; the lighting area is formed by the lighting light output by the two groups of output end groups, and the lighting area is located on the test surface of the product to be tested, and the lighting brightness is the brightness of the lighting area; all the optical path components correspond to the light source components; all the optical path components are detachably connected to the mounting base.

[0017] Optionally, along a direction perpendicular to the Z-axis, the mounting base is further equipped with a heat dissipation assembly opposite to the light source assembly; the heat dissipation assembly is used to dissipate heat conducted from the light source assembly to the mounting base.

[0018] Optionally, the heat dissipation assembly includes a fan group and a fin group located between the fan group and the mounting base; the fan group, the fin group and the mounting base are fixedly connected as one; the fin group is used to absorb the heat conducted from the light source assembly to the mounting base, and dissipate the absorbed heat outward; the fan group is used to perform air cooling on the fin group.

[0019] Optionally, the high-brightness compact light source module also includes a cleaning component; the cleaning component includes a water storage box for storing water, a rubber sheet, and multiple groups of cleaning cotton sheets distributed in a matrix; a water outlet trough connected to the interior of the water storage box is provided on one side of the water storage box; the rubber sheet is adapted to the notch of the water outlet trough; the four sides of the rubber sheet are respectively fixed and sealed to the four sides of the water outlet trough; the middle of each group of the cleaning cotton sheets is fixed to the rubber sheet; the cleaning cotton sheets are used to clean the output end group, the receiving end group and the light source assembly; the cleaning component also includes two groups of sub-components; each group of the sub-components includes a water bag for storing water, a hose, and a pipe clamp corresponding to the hose; one end of the hose penetrates into the interior of the water storage box and is sealed and fixed thereto, and the other end of the hose penetrates into the interior of the water bag and is sealed and fixed thereto; the two groups of the sub-components are distributed on both sides of the water storage box; the rubber sheet and the hose are installed on different side surfaces of the water storage box.

[0020] The light source module provided by the present invention has good applicability and is suitable for all detection equipment that requires a line scan camera. It is compact and saves installation space, and can provide a sufficiently large lighting brightness for the line scan camera to ensure a good detection effect. Specifically, when in use, the product to be tested is placed on a belt conveyor, and the belt conveyor conveys the product to be tested forward. Light source modules are provided on both the upper and lower sides of the belt conveyor. The light source assembly emits illumination light, and the receiving end group receives the illumination light emitted by the light source assembly. The light propagation section group propagates the illumination light received by the receiving end group to at least one group of output end groups; each group of output end groups outputs the illumination light propagated by the light propagation section group, and the output illumination light is directed toward the test surface of the product to be tested in an oblique direction, thereby providing the line scan camera with the light required for imaging. The line scan camera can image the test surface of the product to be tested through the imaging channel for subsequent defect analysis. In addition, each set of output terminals is flat, which can adapt well to narrow places (such as the bottom of a belt conveyor), leaving good plasticity for adding other structures. It can also be very close to the product to be tested, so the use of low-power light source components can provide sufficient lighting brightness, reduce power consumption, and avoid poor heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is an axonometric diagram of a high-brightness compact light source module provided by an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the use of a high-brightness compact light source module provided by an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 A1 in the middle is an enlarged view;

[0025] Figure 4 yes Figure 2 A2 in the middle is an enlarged view;

[0026] Figure 5 This is a top view of a cleaning component in a high-brightness compact light source module provided by an embodiment of the present invention;

[0027] Figure 6 It is a top view of the existing multi-angle line light source;

[0028] Figure 7 It is an axonometric drawing of the existing high brightness linear light source. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, combined, or partially merged, so the actual execution order may vary depending on the actual situation.

[0031] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0033] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0034] This embodiment provides a high-brightness compact light source module, such as Figure 1-Figure 5 As shown ( Figure 1 The cleaning component is hidden), including a mounting base 10; the mounting base 10 is equipped with a light source component and an optical path component 12; the optical path component 12 includes an imaging channel 180 for the line scan camera 3 to capture images along a straight line direction; the imaging direction of the line scan camera 3 is the Z axis, and the depth direction of the imaging channel 180 is the same as the Z axis;

[0035] The optical path component 12 includes at least one group of receiving end groups 13, two groups of output end groups 14, and a light propagation segment group 15 connecting one group of receiving end groups 13 and at least one group of output end groups 14; the two groups of output end groups 14 either share one group of receiving end groups 13 or each uses a separate group of receiving end groups 13; along the direction perpendicular to the Z-axis direction, the two groups of output end groups 14 are symmetrically distributed about the imaging channel 180, and each group of output end groups 14 is flat; wherein, the receiving end group 13 is used to receive the illumination light emitted by the light source assembly, and the light propagation segment group 15 is used to propagate the illumination light received by the receiving end group 13 to at least one group of output end groups 14; each group of output end groups 14 is used to output the illumination light propagated by the light propagation segment group 15, and the output illumination light is emitted along the oblique direction toward the test surface 280 of the product 2 to be tested.

[0036] The light source module provided above has good applicability and is suitable for all inspection equipment that requires a line scan camera 3. It is compact and saves installation space, and can provide sufficiently large lighting brightness for the line scan camera 3 to ensure a good inspection effect. Specifically, when in use, the product 2 to be tested is placed on the belt conveyor 4, and the belt conveyor 4 conveys the product 2 to be tested forward. Light source modules are provided on both the upper and lower sides of the belt conveyor 4. The light source assembly emits illumination light, and the receiving end group 13 receives the illumination light emitted by the light source assembly. The light propagation segment group 15 propagates the illumination light received by the receiving end group 13 to at least one group of output end groups 14; each group of output end groups 14 outputs the illumination light propagated by the light propagation segment group 15, and the output illumination light is directed along an oblique direction toward the test surface 280 of the product 2 to be tested, thereby providing the line scan camera 3 with the light required for imaging. The line scan camera 3 can image the test surface 280 of the product 2 to be tested via the imaging channel 180 for subsequent defect analysis. In addition, each output terminal group 14 is flat, which can be well adapted to a small place (such as the bottom of the belt conveyor 4), leaving good plasticity for adding other structures, and can be very close to the product to be tested 2, so the use of low-power light source components can provide sufficient lighting brightness, reduce power consumption, and avoid poor heat dissipation.

[0037] Optionally, along the Z-axis, the imaging channel 180 includes an inlet end 181 and an outlet end 182, which are sequentially arranged. The inlet end 181 is further away from the product 2 under test than the outlet end 182. The mounting base 10 is further mounted with a coaxial light source 16. The coaxial light source 16 is used to provide compensating light to the test surface 280 of the product 2 under test. The coaxial light source 16 includes a first light outlet (not shown) and a second light outlet 184, which are arranged in opposite directions and sequentially along the Z-axis. The first light outlet is located between the second light outlet 184 and the imaging channel 180. The first light outlet is directly opposite the inlet end 181. The first light outlet allows compensating light to be emitted outward toward the test surface 280 of the product 2 under test, while the second light outlet 184 allows light reflected from the test surface 280 of the product 2 under test to be emitted outward toward the lens of the line scan camera 3. The addition of the coaxial light source 16 can provide compensating light to the test surface 280 of the product 2 under test, thereby optimizing the imaging effect of the line scan camera 3. The coaxial light source 16 can use light sources of various wavelengths (such as infrared light) to meet the imaging requirements of different products.

[0038] Optionally, each of the two output end groups 14 uses a dedicated receiving end group 13; the light propagation segment group 15 connects one receiving end group 13 and one output end group 14; the optical path assembly 12 comprises two rigid light guide plate groups 17; each rigid light guide plate group 17 comprises a receiving end group 13, an output end group 14, and a light propagation segment group 15; the two rigid light guide plate groups 17 are arranged transversely along a direction perpendicular to the Z-axis and cooperate to form an imaging channel 180. The selected rigid light guide plate group 17 has the advantages of simple structure and easy installation.

[0039] Optionally, the arrangement direction of the two groups of rigid light guide plate groups 17 is the Y-axis direction; the light source assembly includes two groups of light-emitting side groups 18 distributed horizontally along the Y-axis direction; the light-emitting side groups 18 correspond one to one with the rigid light guide plate groups 17; compared with the one-to-many method, the one-to-one method is used to reduce the difficulty of design and processing; among the two groups of light-emitting side groups 18 and the two groups of rigid light guide plate groups 17, one group of light-emitting side groups 18 and the corresponding group of rigid light guide plate groups 17 constitute a first unit 19, and the other group of light-emitting side groups 18 and the corresponding group of rigid light guide plate groups 17 constitute a second unit 20; the mounting base 10 includes two groups of light-emitting side groups 18 distributed horizontally along the Y-axis direction; the light-emitting side groups 18 correspond one to one with the rigid light guide plate groups 17; compared with the one-to-many method, the one-to-one method is used to reduce the difficulty of design and processing; Two groups of sub-base bodies 21 are distributed laterally; the upper ends of the two groups of sub-base bodies 21 are fixed to the coaxial light source 16; the first light outlet is located between the two groups of sub-base bodies 21; one of the opposite side surfaces of the two groups of sub-base bodies 21 is installed with the first unit 19, and the other is installed with the second unit 20; the coaxial light source 16 and the two groups of sub-base bodies 21 form a semi-enclosed structure, hiding the two groups of light-emitting side groups 18 therein, which can better concentrate the light of the light-emitting side group 18; in addition, compared with the previous combined stacking design of linear light sources, the combination of the hard light guide plate group 17 and the light-emitting side group 18 adopted in the present invention reduces the volume of the overall light source module and has a compact structure. Optionally, the light-emitting side group 18 is a light bar group, wherein the number of light bars contained in the light bar group is not limited and can be increased or decreased as needed. At the same time, the number of hard light guide plates 22 of the hard light guide plate group 17 is adjusted accordingly according to the number of light bars; the type of light bar is not limited, and other color light sources such as red light and green light can be used in addition to white light; optionally, the light output direction of the light bar group is horizontal.

[0040] Optionally, each group of rigid light guide plates 17 is composed of multiple groups of rigid light guide plates 22 distributed along the Z-axis direction; each group of receiving end groups 13 is composed of multiple groups of receiving ends; each group of output end groups 14 is composed of multiple groups of output ends; each group of light propagation segment groups 15 is composed of multiple groups of light propagation segments; each group of rigid light guide plates 22 is composed of a group of receiving ends, a group of light propagation segments and a group of output ends; each group of rigid light guide plates 22 constituting the same group of rigid light guide plate groups 17 extends toward the test surface 280 of the product to be tested 2 at different angles, thereby providing illumination light at multiple angles. Among them, (1) the lower end of the hard light guide plate 22 can be extended into a relatively small space, and the overall width can be controlled at about 20 mm, so that the output end of the hard light guide plate 22 is closer to the product to be tested 2 to ensure sufficient lighting brightness; (2) the shape, thickness, and light output angle of the hard light guide plate 22 are flexible and can be designed according to actual use requirements to ensure that the output end of the hard light guide plate 22 is close to the product to be tested 2; (3) the hard light guide plate 22 is generally processed by mold opening.

[0041] Optionally, the hard light guide plate 22 is made of any one of acrylic materials, optical grade polymers, aerogels, and optical fiber materials. Using high light transmittance materials to make the hard light guide plate 22 can ensure that the illumination light is lost as little as possible during the transmission process.

[0042] Optionally, multiple groups of optical path assemblies 12 are provided; each group of optical path assemblies 12 has a different illumination area and / or illumination brightness than any other group of optical path assemblies 12; the illumination area is formed by the illumination light output by the two groups of output terminal groups 14, and the illumination area is located on the test surface 280 of the product 2 to be tested, and the illumination brightness is the brightness of the illumination area; all optical path assemblies 12 correspond to light source assemblies, and all optical path assemblies 12 are detachably connected to the mounting base 10. With the above structure, when different angles of illumination are required, the optical path assemblies 12 can be replaced.

[0043] Optionally, along a direction perpendicular to the Z axis, the mounting base 10 is further equipped with a heat dissipation component 23 opposite to the light source component; the heat dissipation component 23 is used to dissipate the heat conducted from the light source component to the mounting base 10 .

[0044] Optionally, the heat dissipation assembly 23 includes a fan group 24 and a fin group 25 located between the fan group 24 and the mounting base 10; the fan group 24, the fin group 25 and the mounting base 10 are fixedly connected as one; the fin group 25 is used to absorb the heat conducted from the light source assembly to the mounting base 10, and dissipate the absorbed heat outward; the fan group 24 is used to perform air cooling on the fin group 25.

[0045] Optionally, the high-brightness compact light source module further includes a cleaning component 26; the cleaning component 26 includes a water storage box 27 for storing water, a rubber sheet 28, and a plurality of cleaning cotton sheets 29 distributed in a matrix; a water outlet 185 connected to the interior of the water storage box 27 is provided on one side; the rubber sheet 28 is adapted to the notch of the water outlet trough 185; the four sides of the rubber sheet 28 are respectively fixed and sealed to the four sides of the water outlet trough 185; the middle of each group of cleaning cotton sheets 29 is fixed to the rubber sheet 28; the cleaning cotton sheets 29 are used to clean the output End group 14, receiving end group 13 and light source assembly; the cleaning assembly 26 also includes two groups of sub-assemblies 30; each group of sub-assemblies 30 includes a water bag 31 for storing water, a hose 32, and a pipe clamp 33 corresponding to the hose 32; one end of the hose 32 penetrates into the interior of the water storage box 27 and is sealed and fixed thereto, and the other end of the hose 32 penetrates into the interior of the water bag 31 and is sealed and fixed thereto; the two groups of sub-assemblies 30 are distributed on both sides of the water storage box 27; the rubber sheet 28 and the hose 32 are installed on different side surfaces of the water storage box 27.

[0046] The cleaning assembly 26 provided above is multi-purpose and easy to use. Specifically:

[0047] When the output end group 14 needs to be cleaned, (1) first, the water storage box 27 is pushed between the output end group 14 and the belt conveyor 4. At this time, the rubber sheet 28 is not stretched, that is, the rubber sheet 28 is in a flat state, so it can be easily inserted and will not be stuck; (2) Then, the user holds the two sets of water bags 31 with both hands and squeezes the water bags 31 so that the water in the water bags 31 is squeezed into the hose 32 and finally enters the water storage box 27. At this time, the rubber sheet 28 is stretched, that is, the rubber sheet 28 is in a bulging state, and the multiple sets of cleaning cotton sheets 29 also bulge and are connected with the water storage box 27. The output end group 14 is fitted; (3) Then, after the water in the two water bags 31 is squeezed into the water storage box 27, two sets of pipe clamps 33 are used to clamp the ends of the two hoses 32 connected to the water storage box 27, so that after the user lets go, the water in the water storage box 27 will not flow back to the water bags 31; (4) Then, use the two water bags 31 as two sets of handles to pull the water storage box 27 to wipe off the dust attached to the output end group 14; (5) After cleaning is completed, remove the two sets of pipe clamps 33, so that the water in the water storage box 27 flows back into the two water bags 31, and the water storage box 27 is pulled out.

[0048] When the receiving end group 13 or the light source assembly needs to be cleaned, the water storage box 27 is used as a handle. Since the cleaning cotton sheet 29 is only fixed to the rubber sheet 28 in the middle, that is, the edge of the cleaning cotton sheet 29 can move freely, the dust attached to the receiving end group 13 or the light source assembly is wiped with the edge or middle of the cleaning cotton sheet 29. During this process, the rubber sheet 28 is in a flat state.

[0049] When auxiliary heat dissipation is required, two sets of water bags 31 are used to fit different positions of the mounting base 10 (preferably on both sides), and the hose 32 is clamped on the mounting base 10 through the pipe clamp 33, so that the water bag 31 can be stably fitted on the mounting base 10.

[0050] Therefore, the additional cleaning component 26, on the one hand, can clean the output end group 14, the receiving end group 13 and the light source component to make the light output effect better, especially after the mounting base 10 is fixed to the frame of the belt conveyor 4, the space between the output end group 14 and the belt conveyor 4 is small, and the long and retractable cleaning component 26 can adapt well to this use environment. On the other hand, it can assist in heat dissipation of the mounting base 10.

[0051] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A high-brightness compact light source module, comprising a mounting base; characterized in that: The mounting base is equipped with a light source assembly and an optical path assembly; the optical path assembly includes an imaging channel for a line scan camera to capture images along a straight line direction; the imaging direction of the line scan camera is the Z axis, and the depth direction of the imaging channel is the same as the Z axis; The optical path assembly is composed of two groups of rigid light guide plate groups; each group of the rigid light guide plate groups is composed of a group of receiving end groups, a group of output end groups and a group of light propagation segment groups; the light propagation segment groups connect one group of the receiving end groups and one group of the output end groups; the two groups of the output end groups each use a separate group of the receiving end groups; along the direction perpendicular to the Z-axis, the two groups of the output end groups are symmetrically distributed about the imaging channel, and each group of the output end groups is flat; wherein, the receiving end group is used to receive the illumination light emitted by the light source assembly, and each group of the output end groups is used to output the illumination light propagated by the light propagation segment group, and the output illumination light is emitted along an oblique direction toward the surface to be tested of the product to be tested; Along the Z-axis direction, the imaging channel includes an entrance end and an exit end arranged in sequence; compared with the exit end, the entrance end is farther away from the product to be tested; the mounting base is also equipped with a coaxial light source; the coaxial light source is used to provide compensation light to the test surface of the product to be tested; the coaxial light source includes a first light outlet and a second light outlet arranged in sequence in opposite directions along the Z-axis direction; the first light outlet is located between the second light outlet and the imaging channel; the first light outlet is directly opposite to the entrance end; wherein, the first light outlet is used for the compensation light to be emitted outwardly toward the test surface of the product to be tested, and the second light outlet is used for the light reflected by the test surface of the product to be tested to be emitted outwardly toward the lens of the line scan camera; Along a direction perpendicular to the Z-axis, the two groups of hard light guide plates are distributed laterally and cooperate to form the imaging channel; The arrangement direction of the two sets of rigid light guide plate groups is the Y-axis direction; the light source assembly includes two sets of light-emitting side groups distributed transversely along the Y-axis direction; the light-emitting side groups correspond one to one with the rigid light guide plate groups; Among the two groups of light-emitting side groups and the two groups of rigid light guide plate groups, one group of light-emitting side groups and the corresponding group of rigid light guide plate groups constitute a first unit, and the other group of light-emitting side groups and the corresponding group of rigid light guide plate groups constitute a second unit; the mounting base includes two groups of sub-base bodies distributed transversely along the Y-axis direction; the upper ends of the two groups of sub-base bodies are fixed to the coaxial light source; the first light outlet is located between the two groups of sub-base bodies; the first unit is installed on one of the opposite side surfaces of the two groups of sub-base bodies, and the second unit is installed on the other side surface; The coaxial light source and the two groups of sub-base bodies form a semi-enclosed structure.

2. A high-brightness compact light source module according to claim 1, characterized in that: Each group of the rigid light guide plate groups is composed of multiple groups of rigid light guide plates distributed along the Z-axis direction; each group of the receiving end groups is composed of multiple groups of receiving ends; each group of the output end groups is composed of multiple groups of output ends; each group of the light propagation segment groups is composed of multiple groups of light propagation segments; each group of the rigid light guide plates is composed of a group of the receiving ends, a group of the light propagation segments and a group of the output ends; the groups of rigid light guide plates constituting the same group of the rigid light guide plate groups extend toward the test surface of the product to be tested at different angles.

3. The high-brightness compact light source module according to claim 2, characterized in that: The hard light guide plate is made of any one of acrylic material, light-conducting grade polymer, aerogel, and optical fiber material.

4. The high-brightness compact light source module according to claim 1, characterized in that: The optical path components are provided in multiple groups; each group of the optical path components has a different illumination area and / or illumination brightness from any other group of the optical path components; the illumination area is formed by the illumination light output by the two groups of the output end groups, and the illumination area is located on the test surface of the product to be tested, and the illumination brightness is the brightness of the illumination area; all the optical path components correspond to the light source components; and all the optical path components are detachably connected to the mounting base.

5. The high-brightness compact light source module according to claim 1, characterized in that: Along the direction perpendicular to the Z axis, the mounting base is further equipped with a heat dissipation component opposite to the light source component; the heat dissipation component is used to dissipate the heat conducted from the light source component to the mounting base.

6. The high-brightness compact light source module according to claim 5, characterized in that: The heat dissipation assembly includes a fan group and a fin group located between the fan group and the mounting base; the fan group, the fin group and the mounting base are fixedly connected as one body; the fin group is used to absorb the heat conducted from the light source assembly to the mounting base and dissipate the absorbed heat outward; the fan group is used to perform air cooling on the fin group.

7. A high-brightness compact light source module according to any one of claims 1 to 6, characterized in that: The high-brightness compact light source module also includes a cleaning component; The cleaning component includes a water storage box for storing water, a rubber sheet, and multiple groups of cleaning cotton sheets distributed in a matrix; a water outlet groove connected to the interior of the water storage box is provided on one side of the water storage box; the rubber sheet is adapted to the notch of the water outlet groove; the four sides of the rubber sheet are respectively fixed and sealed to the four sides of the water outlet groove; the middle part of each group of the cleaning cotton sheets is fixed to the rubber sheet; the cleaning cotton sheets are used to clean the output end group, the receiving end group and the light source assembly; the cleaning component also includes two groups of sub-assemblies; each group of the sub-assemblies includes a water bag for storing water, a hose, and a pipe clamp corresponding to the hose; one end of the hose penetrates into the interior of the water storage box and is sealed and fixed thereto, and the other end of the hose penetrates into the interior of the water bag and is sealed and fixed thereto; the two groups of the sub-assemblies are distributed on both sides of the water storage box; the rubber sheet and the hose are installed on different side surfaces of the water storage box.

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