Detection combined light source and visual detection device

Abstract

The utility model discloses a combined light source for detection, which comprises a first light-emitting component, a second light-emitting component and a third light-emitting component which are sequentially arranged along the lighting direction, the second light-emitting component is annular, the first light-emitting component is connected with the end face of one end of the second light-emitting component, and the first light-emitting component comprises a plurality of first light-emitting bodies. The first light-emitting bodies are arranged on the outer side of the second light-emitting assembly at intervals in the circumferential direction of the second light-emitting assembly, the third light-emitting assembly is connected with the end face, back to the first light-emitting assembly, of the second light-emitting assembly, and the light emitting end of the third light-emitting assembly is located on the inner side of the second light-emitting assembly. Through the arrangement, under the illumination of the detection combined light source, the definition of the surface of a detected product can be effectively improved, the surface information of the product can be effectively and clearly reflected, the imaging reliability of the detected product can be effectively improved, the surface imaging error of the detected product is further remarkably reduced, and the product quality is improved. Therefore, the accuracy of software image analysis after image capturing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting sources, and particularly relates to a detection combined light source. Background Art

[0002] In conventional production operations, it is necessary to detect products on an inspection assembly line to meet inspection requirements before they can be put on the market, especially for products with high-precision requirements such as electronic components and circuit boards. There are various ways to detect products, and the most common one is appearance detection. Appearance detection mainly examines the appearance defects of products, such as metal surface defects, welding points of circuit boards, positions of mounted devices, etc.

[0003] With the development of industrial automation, the realization of automatic appearance detection has increasingly become the object of people's research. In the process of automatic inspection, it is necessary to use a light source to illuminate and supplement light for the product, then use a detection camera to capture an image of the product, and then use software to detect and analyze the surface of the product. Therefore, in order to clearly display the contour of the product surface, in the prior art, for products with a three-dimensional structure and rich colors, the conventional lighting source is often single, and the surface information of the product cannot be effectively and clearly reflected. Under the illumination of ordinary light sources, the defect information displayed by the product has errors, which affects the accuracy of image analysis and ultimately affects the detection accuracy. Therefore, it is urgent to make improvements. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a detection combined light source to solve the problem that the conventional lighting source is single and the surface information of the product cannot be clearly reflected in the related art.

[0005] To achieve the above purpose, the utility model proposes a detection combined light source, which includes a first light-emitting component, a second light-emitting component, and a third light-emitting component arranged in sequence along the illumination direction. The second light-emitting component is arranged in a ring shape. One end face of the first light-emitting component is connected to the second light-emitting component. The first light-emitting component includes a plurality of first light-emitting bodies, and each of the first light-emitting bodies is arranged at intervals along the circumferential direction of the second light-emitting component on the outside of the second light-emitting component. The third light-emitting component is connected to the end face of the second light-emitting component facing away from the first light-emitting component, and the light-emitting end of the third light-emitting component is located inside the second light-emitting component.

[0006] In some embodiments, each of the first light-emitting bodies is rotatably installed on the second light-emitting component, and the extending direction of the rotation central axis of each of the first light-emitting bodies is tangent to the circumferential direction of the second light-emitting component.

[0007] In some embodiments, the second light-emitting component includes a second light-emitting body, a mounting plate, and a plurality of mounting brackets. The mounting plate is provided with a projection hole therethrough. The second light-emitting body is arranged in an annular shape. The second light-emitting body is mounted at one end of the mounting plate and located inside the projection hole. Each of the mounting brackets is mounted at the other end of the mounting plate and is arranged at intervals along the circumference of the projection hole. Both ends of each of the first light-emitting bodies are rotatably mounted on two adjacent mounting brackets respectively.

[0008] In some embodiments, the mounting bracket is provided with two rotation holes. Both ends of each of the first light-emitting bodies along its rotation axis direction are provided with rotation shafts. The two rotation holes are respectively rotatably connected to the rotation shafts of two adjacent first light-emitting bodies.

[0009] In some embodiments, at least two fixing holes are further provided on the surface of the mounting bracket where the rotation hole is located. Each of the fixing holes is arranged at intervals along the circumference of the rotation hole. The first light-emitting body is provided with threaded holes corresponding to the fixing holes.

[0010] In some embodiments, the first light-emitting body includes a housing, a diffuser plate, a condenser rod, and a first circuit light board. Both ends of the housing are respectively rotatably connected to the corresponding mounting brackets. The housing is provided with a mounting cavity with one end open. The first circuit light board is mounted at the bottom of the mounting cavity. The condenser rod is mounted in the mounting cavity and located above the first circuit light board. The diffuser plate is connected to the housing and covers the open end of the mounting cavity.

[0011] In some embodiments, the second light-emitting body is a three-color RGB annular shadowless light source.

[0012] In some embodiments, the third light-emitting component includes a mounting shell, a second circuit light board, and a beam splitter. The second circuit light board and the beam splitter are mounted in the mounting shell. Translucent holes and emission holes are respectively provided on two side surfaces of the mounting shell along the illumination direction of the detection combined light source. The beam splitter is located between the translucent hole and the emission hole. The beam splitter is arranged at an angle of 45° with the illumination direction of the detection combined light source. The illumination direction of the second circuit light board is arranged at an angle of 90° with the illumination direction of the detection combined light source.

[0013] In some embodiments, the third light-emitting component further includes a transparent plate. The transparent plate is connected to the mounting shell and covers the translucent hole.

[0014] The present utility model further provides a vision detection device. The vision detection device includes a detection camera and the above-mentioned detection combined light source. The lens facing direction of the detection camera is parallel to the illumination direction of the detection combined light source.

[0015] The beneficial effects of the technical solution of the present utility model are as follows:

[0016] The detection combined light source of the present utility model is provided with a first light-emitting component, a second light-emitting component and a third light-emitting component. The projections of these three light-emitting components in the illumination direction of the detection combined light source do not overlap. The three light-emitting components are in a three-dimensional stepped distribution, and the three light-emitting components provided can be adjusted to be provided with illumination light-emitting bodies of different wavelength bands according to the illumination requirements. Thus, under the illumination of the detection combined light source, the clarity of the surface of the product to be detected can be effectively improved, and the surface information of the product can be effectively and clearly reflected. Moreover, the reliability of imaging of the product to be detected can be effectively improved, and then the imaging error on the surface of the product to be detected can be significantly reduced, thereby improving the accuracy of software image analysis after image acquisition. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the detection combined light source according to an embodiment of the present utility model;

[0018] Figure 2 is an exploded view of the structure of the detection combined light source according to an embodiment of the present utility model;

[0019] Figure 3 is a cross-sectional view of the detection combined light source according to an embodiment of the present utility model;

[0020] Figure 4 is Figure 1 a schematic structural diagram of the first light-emitting member in

[0021] Explanation of the reference numerals in the drawings:

[0022] 100, first light-emitting component; 110, first light-emitting body; 110a, rotating shaft; 111, housing; 111a, threaded hole; 112, diffuser plate; 113, light collecting rod; 114, first circuit lamp board; 200, second light-emitting component; 210, second light-emitting body; 220, mounting plate; 221, projection hole; 230, mounting bracket; 231, rotating hole; 232, fixing hole; 300, third light-emitting component; 310, mounting shell; 311, light-transmitting hole; 312, emitting hole; 320, second circuit lamp board; 330, beam splitter; 340, transparent plate; illumination direction, A. Detailed Embodiments

[0023] The following will clearly and completely describe the solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0024] In view of the technical defects existing in the related art, the present utility model provides a detection combined light source. Please refer to Figures 1 to 3 , the detection combined light source includes a first light-emitting component 100, a second light-emitting component 200, and a third light-emitting component 300 arranged in sequence along the illumination direction A. The second light-emitting component 200 is arranged in an annular shape. The second light-emitting component 200 can be arranged in a square annular shape, a circular annular shape, or other annular shapes, and no specific limitation is made here.

[0025] One end face of the first light-emitting component 100 is connected to the second light-emitting component 200. The connection method between the first light-emitting component 100 and the second light-emitting component 200 can be a detachable connection method, such as screw locking, clamping, etc., or an inseparable connection method, such as welding, riveting, etc. The specific connection method between the first light-emitting component 100 and the second light-emitting component 200 is not specifically limited here.

[0026] Furthermore, the first light-emitting component 100 includes a plurality of first light-emitting bodies 110. Each first light-emitting body 110 is arranged at intervals along the circumferential direction of the second light-emitting component 200 on the outside of the second light-emitting component 200. That is, the first light-emitting component 100 uses a plurality of first light-emitting bodies 110 to surround the second light-emitting component 200, so that the first light-emitting component 100 is also arranged in an annular shape, and further, the projections of the first light-emitting component 100 and the second light-emitting component 200 in the illumination direction A do not overlap, and the first light-emitting component 100 and the second light-emitting component 200 are in a three-dimensional stepped distribution.

[0027] In addition, the number of the first light-emitting bodies 110 provided can be 3, 4, or more than 4. That is, the first light-emitting component 100 formed by enclosing a plurality of first light-emitting bodies 110 can be arranged in an equilateral triangle shape, a square shape, or other polygon shapes, and no specific limitation is made here.

[0028] In addition, the third light-emitting component 300 is connected to the end face of the second light-emitting component 200 facing away from the first light-emitting component 100. Similarly, the connection manner between the third light-emitting component 300 and the second light-emitting component 200 is similar to the connection manner between the first light-emitting component 100 and the second light-emitting component, and will not be elaborated one by one here.

[0029] In addition, the light-emitting end of the third light-emitting component 300 is located inside the second light-emitting component 200; that is, the projections of the third light-emitting component 300 and the second light-emitting component 200 in the illumination direction A do not overlap, and the third light-emitting component 300 and the second light-emitting component 200 are also arranged in a three-dimensional stepped manner.

[0030] Through the above technical solution, the projections of the three light-emitting components, namely the first light-emitting component 100, the second light-emitting component 200, and the third light-emitting component 300, in the illumination direction A of the detection combined light source do not overlap, the three light-emitting components are arranged in a three-dimensional stepped manner, and the three light-emitting components provided can be adjusted to be provided with illumination light-emitting bodies of different bands according to the illumination requirements. Thus, under the illumination of the detection combined light source, the clarity of the surface of the product to be detected can be effectively improved, the surface information of the product can be effectively and clearly reflected, and the reliability of the imaging of the product to be detected can be effectively improved. Furthermore, the imaging error on the surface of the product to be detected can be significantly reduced, thereby improving the accuracy of software image analysis after image acquisition.

[0031] In order to make the detection combined light source more adjustable, in this embodiment, each first light-emitting body 110 is rotatably installed on the second light-emitting component 200, and the extending direction of the rotation central axis of each first light-emitting body 110 is tangentially arranged with the circumferential direction of the second light-emitting component 200. Thus, the staff can change the irradiation focus of the first light-emitting component 100 by adjusting the rotation angle of the first light-emitting body 110, thereby improving the adjustability of the detection combined light source to meet the surface illumination requirements of different products to be detected.

[0032] For the convenience of installing the first light-emitting body 110 and setting the second light-emitting component 200, in this embodiment, the second light-emitting component 200 includes a second light-emitting body 210, a mounting plate 220, and a plurality of mounting brackets 230. The mounting plate 220 is provided with a projection hole 221 penetrating therethrough. The second light-emitting body 210 is arranged in a ring shape. The second light-emitting body 210 is installed at one end of the mounting plate 220 and located inside the projection hole 221. Each mounting bracket 230 is installed at the other end of the mounting plate 220 and is arranged at intervals along the circumferential direction of the projection hole 221. Both ends of each first light-emitting body 110 are rotatably installed on two adjacent mounting brackets 230. By providing a mounting plate 220 with a projection hole 221 and installing the second light-emitting body 210 and a plurality of first light-emitting bodies 110 on both sides of the mounting plate 220, the first light-emitting component 100 and the second light-emitting component 200 are in a three-dimensional stepped distribution; in addition, a plurality of mounting brackets 230 are provided to facilitate the installation of each first light-emitting body 110.

[0033] Furthermore, the mounting bracket 230 is provided with two rotation holes 231. Both ends of each first light-emitting body 110 along the direction of its rotation axis 110a are provided with rotation axes 110a. The two rotation holes 231 are respectively rotatably connected to the rotation axes 110a of two adjacent first light-emitting bodies 110. The first light-emitting body 110 can be rotatably installed on two adjacent mounting brackets 230.

[0034] In another embodiment, it can be that both ends of the first light-emitting body 110 along the direction of its rotation axis 110a are provided with rotation holes 231, and the mounting bracket 230 is provided with a rotation axis 110a matching the rotation holes 231.

[0035] It should be noted that the rotation axis 110a can be integrally formed with the first light-emitting body 110, or can be set by providing a plug-in groove on the first light-emitting body 110, and the rotation axis 110a exists separately and is plugged and matched with the plug-in groove of the first light-emitting body 110. The specific setting form of the rotation axis 110a is not specifically limited herein.

[0036] In addition, in order to facilitate fixing the angle after the first light-emitting body 110 is rotationally adjusted, in this embodiment, the mounting bracket 230 is provided with at least two fixing holes 232 on the surface where the rotation hole 231 is located. The fixing holes 232 are arranged at intervals along the circumference of the rotation hole 231. The first light-emitting body 110 is provided with threaded holes 111a corresponding to the fixing holes 232. In this way, after the first light-emitting body 110 rotates to a suitable direction, the screw can be locked. After passing through the fixing hole 232, the screw is threadedly connected to the threaded hole 111a, so that the first light-emitting body 110 and the mounting bracket 230 are relatively fixed, and the angle of the first light-emitting body 110 can be fixed after rotation adjustment. In addition, in this embodiment, the mounting bracket 230 is made of sheet metal. Through sheet metal folding, two mounting surfaces can be formed. The rotation hole 231 and each fixing hole 232 are respectively arranged through the two mounting surfaces, so that each mounting bracket 230 can provide reliable and effective support for the first light-emitting body 110.

[0037] Please refer to Figure 4 , in some embodiments, the first light-emitting body 110 includes a housing 111, a diffuser plate 112, a light collecting rod 113, and a first circuit light board 114. Both ends of the housing 111 are rotatably connected to the corresponding mounting brackets 230. The housing 111 is provided with a mounting cavity with one end open. The first circuit light board 114 is installed at the bottom of the mounting cavity. The light collecting rod 113 is installed in the mounting cavity and above the first circuit light board 114. The diffuser plate 112 is connected to the housing 111 and covers the open end of the mounting cavity. By providing the diffuser plate 112 in front of the light collecting rod 113, the light emitted by the first circuit light board 114 after being concentrated by the light collecting rod 113 can be diffused, so as to form a uniform light distribution on the illumination surface. Such illumination can effectively reduce light spots and glare, improve the utilization efficiency of the light source, and make the illumination effect softer and more comfortable.

[0038] In addition, in some embodiments, the second light-emitting body 210 is a three-color RGB ring shadowless light source. The three-color RGB ring shadowless light source is a special visual light source. It combines the RGB color mode and provides the ability to mix three colors: red, green, and blue, so as to be able to produce a rich variety of color effects, can simulate and display any color, and provides a wider color recognition ability for the machine vision system. And through special optical path design and diffuse reflection technology, uniform illumination of the object surface is achieved, and the shadow generated by direct illumination of the light source is eliminated, that is, shadowlessness is achieved. In this way, the details on the surface of the detected product can be seen more clearly, the clarity and contrast of the image are improved, and thus the accuracy and efficiency of detection are improved.

[0039] In some embodiments, the third light-emitting component 300 includes a mounting shell 310, a second circuit light board 320, and a beam splitter 330. The second circuit light board 320 and the beam splitter 330 are installed in the mounting shell 310. Light-transmitting holes 311 and light-emitting holes 312 are respectively provided on two side surfaces of the mounting shell 310 along the illumination direction A of the detection combined light source. The beam splitter 330 is located between the light-transmitting hole 311 and the light-emitting hole 312, and the beam splitter 330 is arranged at an angle of 45° with the illumination direction A of the detection combined light source. The illumination direction of the second circuit light board 320 is arranged at an angle of 90° with the illumination direction A of the detection combined light source. With such an arrangement, the light emitted by the second circuit light board 320 can be reflected by the beam splitter 330 and irradiated out from the light-emitting hole 312, so that the light emitted by the second circuit light board 320 is located inside the second light-emitting body 210. That is to say, the projections of the third light-emitting component 300 and the second light-emitting component 200 in the illumination direction A do not overlap, and the third light-emitting component 300 and the second light-emitting component 200 are also in a three-dimensional stepped distribution.

[0040] In addition, the third light-emitting component 300 further includes a transparent plate 340. The transparent plate 340 is connected to the mounting shell 310 and covers the light-transmitting hole 311. The detection camera for imaging the product to be detected can be located above the transparent plate 340. That is to say, the detection camera images the product to be detected located under the illumination position of the detection combined light source through the transparent mirror and the beam splitter 330.

[0041] The present utility model also provides a vision detection device. The vision detection device includes a detection camera and the above-mentioned detection combined light source. The direction of the lens of the detection camera is parallel to the illumination direction A of the detection combined light source. For the specific structure of the detection combined light source, refer to the above embodiments. Since the vision detection device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0042] The above are only partial or preferred embodiments of the present utility model. Whether in terms of words or drawings, the protection scope of the present utility model cannot be limited thereby. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the overall concept of the present utility model, or any direct / indirect application in other related technical fields is included in the protection scope of the present utility model.

Claims

1. A detection combined light source, characterized in that, The detection combined light source includes a first light-emitting component (100), a second light-emitting component (200), and a third light-emitting component (300) sequentially arranged along the illumination direction. The second light-emitting component (200) is arranged in an annular shape. One end face of the first light-emitting component (100) is connected to the second light-emitting component (200). The first light-emitting component (100) includes a plurality of first light-emitting bodies (110), and each of the first light-emitting bodies (110) is arranged at intervals along the circumferential direction of the second light-emitting component (200) on the outside of the second light-emitting component (200). The third light-emitting component (300) is connected to the end face of the second light-emitting component (200) facing away from the first light-emitting component (100), and the light-emitting end of the third light-emitting component (300) is located inside the second light-emitting component (200).

2. The detection combined light source according to claim 1, wherein Each of the first light-emitting bodies (110) is rotatably mounted on the second light-emitting component (200), and the extending direction of the rotation central axis of each of the first light-emitting bodies (110) is tangential to the circumferential direction of the second light-emitting component (200).

3. The detection combined light source according to claim 2, wherein The second light-emitting component (200) includes a second light-emitting body (210), a mounting plate (220), and a plurality of mounting brackets (230). The mounting plate (220) is provided with a projection hole (221) penetrating therethrough. The second light-emitting body (210) is arranged in an annular shape, and the second light-emitting body (210) is mounted on one end of the mounting plate (220) and located inside the projection hole (221). Each of the mounting brackets (230) is mounted on the other end of the mounting plate (220) and arranged at intervals along the circumferential direction of the projection hole (221). Both ends of each of the first light-emitting bodies (110) are rotatably mounted on two adjacent mounting brackets (230).

4. The detection combined light source according to claim 3, characterized in that The mounting bracket (230) is provided with two rotation holes (231). Both ends of each of the first light-emitting bodies (110) along the direction of its rotation axis (110a) are provided with rotation axes (110a), and the two rotation holes (231) are respectively rotationally connected to the rotation axes (110a) of two adjacent first light-emitting bodies (110).

5. The detection combined light source according to claim 4, wherein On the surface of the mounting bracket (230) where the rotation hole (231) is provided, at least two fixing holes (232) are further provided. Each of the fixing holes (232) is arranged at intervals along the circumferential direction of the rotation hole (231), and the first light-emitting body (110) is provided with threaded holes (111a) corresponding to the fixing holes (232).

6. The detection combined light source according to claim 3, wherein The first light emitter (110) includes a housing (111), a diffuser plate (112), a condenser rod (113), and a first circuit light board (114). Both ends of the housing (111) are rotatably connected to the corresponding mounting brackets (230). The housing (111) is provided with a mounting cavity with one end open. The first circuit light board (114) is mounted on the bottom of the mounting cavity. The condenser rod (113) is mounted in the mounting cavity and is located above the first circuit light board (114). The diffuser plate (112) is connected to the housing (111) and covers the open end of the mounting cavity.

7. The detection combined light source according to claim 3, wherein, The second light emitter (210) is a three-color RGB ring shadowless light source.

8. The detection combined light source according to claim 1, characterized in that The third light emitting assembly (300) includes a mounting shell (310), a second circuit light board (320), and a beam splitting plate (330). The second circuit light board (320) and the beam splitting plate (330) are mounted in the mounting shell (310). Translucent holes (311) and emission holes (312) are respectively provided on both side surfaces of the mounting shell (310) along the illumination direction of the detection combined light source. The beam splitting plate (330) is located between the translucent hole (311) and the emission hole (312). The beam splitting plate (330) is arranged at an angle of 45° with the illumination direction of the detection combined light source. The illumination direction of the second circuit light board (320) is arranged at an angle of 90° with the illumination direction of the detection combined light source.

9. The detection combined light source according to claim 8, characterized in that, The third light emitting assembly (300) further includes a transparent plate (340). The transparent plate (340) is connected to the mounting shell (310) and covers the translucent hole (311).

10. A visual detection device, characterized in that, The vision detection device includes a detection camera and the detection combined light source according to any one of claims 1 to 9. The lens facing direction of the detection camera is parallel to the illumination direction of the detection combined light source.

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