Multi-view imaging detection light source and multi-view detection equipment

Abstract

The multi-view imaging detection light source comprises a shell, a plurality of first reflectors, a plurality of second reflectors and a first light source assembly, the shell is provided with a light path channel, an input end and an output end, and the input end and the output end are communicated with the two ends of the light path channel; the first reflectors are arranged at intervals along the inner peripheral wall of the light path channel, the first reflectors are arranged close to the input end, and the mirror surfaces of the first reflectors are obliquely arranged in the extending direction of the light path channel towards the inner peripheral wall deviating from the light path channel; the second reflectors are arranged at intervals along the inner peripheral wall of the light path channel, the second reflectors are arranged close to the output end, and the mirror surfaces of the second reflectors are obliquely arranged close to the inner peripheral wall of the light path channel in the extending direction of the light path channel; a detected object used for detection is located at the output end, and an image of the detected object can be reflected into the input end through the second reflectors and the first reflectors in sequence; in this way, the detection camera located at the input end can shoot images of the detected object at multiple visual angles in one-time image taking, and the image taking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection light sources, in particular to a multi-viewing angle imaging detection light source. Background Art

[0002] With the continuous deepening of industrial automation and intelligence, the application of visual inspection equipment in the industrial field has become more and more extensive. It covers the inspection of electronic circuits, product appearance and other aspects, and is widely welcomed by people because of its many advantages such as high inspection efficiency, stable results and low cost. At present, automated visual inspection equipment has begun to gradually replace manual inspection in large quantities and has been applied to various industries.

[0003] When existing visual inspection equipment takes photos and images of the outer surface of the inspected product, it is usually necessary to take photos and images of the inspected product from multiple perspectives in order to extract images of each surface of the inspected product in a three-dimensional shape. However, the visual inspection equipment cannot simultaneously take images of the inspected product from multiple perspectives in one shot. This requires the visual inspection equipment to take images multiple times, making the inspection process complicated and not conducive to the use and promotion of visual inspection equipment. Therefore, improvement is urgently needed. Utility Model Content

[0004] The main purpose of the utility model is to propose a multi-view imaging detection light source to solve the problem in the related art that visual inspection equipment cannot simultaneously capture images of multiple perspectives of the inspected product in one shot.

[0005] To achieve the above-mentioned objectives, the present invention proposes a multi-view imaging detection light source, comprising: a shell having an optical path channel and an input end and an output end connecting the two ends of the optical path channel; a plurality of first reflectors, each of which is arranged at intervals along the inner circumferential wall of the optical path channel, each of which is arranged adjacent to the input end and its mirror surface is inclined away from the inner circumferential wall of the optical path channel along the extension direction of the optical path channel; a plurality of second reflectors, each of which is arranged at intervals along the inner circumferential wall of the optical path channel, each of which is arranged adjacent to the output end and its mirror surface is inclined close to the inner circumferential wall of the optical path channel along the extension direction of the optical path channel; an object to be detected is located at the output end, and an image of the object to be detected can be reflected by each of the second reflectors and each of the first reflectors in sequence into the input end; a first light source assembly, the first light source assembly is installed in the optical path channel, and the light of the first light source assembly is projected from the output end along the extension direction of the optical path channel.

[0006] In some embodiments, the first light source assembly is located between each of the first reflectors and each of the second reflectors.

[0007] In some embodiments, the first light source assembly is arranged in a ring shape, and the central axis of the light source assembly is arranged parallel to the extension direction of the light path channel.

[0008] In some embodiments, the multi-view imaging detection light source further includes a second light source assembly, which is mounted on the housing and encloses the output port.

[0009] In some embodiments, the second light source assembly is annular in shape, and an inner contour of the second light source assembly is larger than an inner contour of the first light source assembly.

[0010] In some embodiments, the light of the second light source assembly is emitted in a radial direction.

[0011] In some embodiments, the multi-view imaging detection light source also includes a mounting base and a spectrometer, the mounting base has a first incident end and an emission end arranged along the extension direction of the optical path channel, the emission end is connected to the output end, and the spectrometer is obliquely arranged between the emission end and the first incident end.

[0012] In some embodiments, the mounting base further has a second incident end, the extension direction of the second incident end is arranged perpendicularly to the extension direction of the optical path channel, the second incident end is located between the first incident end and the emission end, and the beam splitter is arranged inclined along the extension direction of the optical path channel in a direction away from the second incident end.

[0013] In some embodiments, the multi-view imaging detection light source further includes an anti-reflection plate, which is connected to the mounting base and covers the port of the first incident end.

[0014] A multi-view detection device, which includes a detection camera and the multi-view imaging detection light source as described above. The lens of the detection camera is facing the input end, and the image of the object to be measured can be reflected by each of the second reflectors and each of the first reflectors in sequence into the lens of the detection camera.

[0015] The beneficial effects of the technical solution of this utility model are:

[0016] The multi-view imaging detection light source of the present invention arranges multiple first reflectors and multiple second reflectors in the optical path channel within the shell, so that the circumferential side image of the object to be measured at the output end can be reflected by each of the second reflectors and each of the first reflectors into the input end in sequence. In this way, the detection camera at the input end can capture images of the object to be measured from multiple perspectives in one imaging. In addition, a first light source component is also provided in the optical path channel. The light of the first light source component is irradiated on the object to be measured, so that the image of the object to be measured is clear after being imaged, ensuring that the images of the detection camera at each perspective after one imaging meet the detection requirements. In this way, the use of the multi-view imaging detection light source can make the detection camera quickly capture images and improve imaging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a multi-view imaging detection light source according to an embodiment of the present utility model;

[0018] Figure 2 This is an exploded diagram of the structure of the multi-view imaging detection light source according to an embodiment of the present utility model;

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

[0020] Figure 4 for Figure 1 Structural explosion diagram of the first light source component.

[0021] Description of Figure Numbers:

[0022] 100, housing; 110, optical path; 111, input end; 112, output end; 200, first reflector; 300, second reflector; 400, first light source assembly; 410, mounting housing; 420, circuit light board; 430, diffuser; 500, second light source assembly; 600, mounting base; 610, first incident end; 620, second incident end; 630, output end; 700, beam splitter; 800, antireflection film; 10, detection camera; 20, object to be measured. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the schemes in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0024] In view of the technical defects in the related art, this utility model provides a multi-view imaging detection light source, please refer to Figures 1 to 4 The multi-view imaging detection light source includes: a shell 100, multiple first reflectors 200, multiple second reflectors 300 and a first light source assembly 400. The shell 100 serves as a supporting part for the various components of the multi-view imaging detection light source. It can be made of plastic material, or it can be made of metal material after machining and splicing, or it can be made of sheet metal material by bending and welding. The specific method of making the shell 100 is not limited here.

[0025] The housing 100 has an optical path channel 110 and an input end 111 and an output end 112 connecting the two ends of the optical path channel 110 ; that is, external light can enter from the input end 111 of the housing 100 along the optical path channel and be emitted from the output end 112 of the optical path channel 110 .

[0026] Furthermore, each first reflector 200 is arranged at intervals along the inner wall of the optical path channel 110, and each first reflector 200 is arranged adjacent to the input end 111 and its mirror surface is inclined along the extension direction of the optical path channel 110 toward the inner wall of the optical path channel 110; the number of first reflectors 200 arranged can be three, four, five or more. Since each first reflector 200 is arranged at an angle, each first reflector 200 forms a polygonal shape. In order to enable each first reflector 200 to reflect the image more comprehensively, each first reflector 200 is arranged in a trapezoidal shape, so that the gap between each first reflector 200 at the connection position of adjacent edges is small, and a larger area of image can be reflected.

[0027] The second reflectors 300 are arranged at intervals along the inner circumferential wall of the optical path channel 110. Each second reflector 300 is arranged adjacent to the output end 112 and its mirror surface is inclined along the extension direction of the optical path channel 110 and close to the inner circumferential wall of the optical path channel 110. The number of second reflectors 300 can be three, four, five or more. In this embodiment, the number of second reflectors 300 is consistent with the number of first reflectors 200, so that the image of the object to be measured 20 is reflected by the first reflector 200 corresponding to the second reflector 300 after passing through the second reflector 300.

[0028] Similarly, since each second reflector 300 is arranged at an angle, each second reflector 300 forms a polygonal shape. In order to enable each second reflector 300 to reflect the image more comprehensively, each second reflector 300 is arranged in a trapezoidal shape, so that the gap between the adjacent edges of each second reflector 300 is smaller, and a larger area of image can be reflected.

[0029] In this way, the object 20 to be inspected is located at the output end 112 , and the image of the object 20 can be reflected by the second reflectors 300 and the first reflectors 200 in sequence and enter the input end 111 .

[0030] In addition, the first light source assembly 400 is installed in the optical path 110, and the light of the first light source assembly 400 is projected from the output end 112 along the extension direction of the optical path 110. The first light source assembly 400 can provide supplementary light for the object to be measured, so that the inspection camera 10 can obtain a clear image of the surface of the object to be measured 20.

[0031] The first light source assembly 400 can be installed on a side of the shell 100 adjacent to the output end 112, or can be installed in the optical path channel 110 of the shell 100. The position where the first light source assembly 400 is installed on the shell 100 only needs to be able to provide fill light to the object under test 20, and no specific limitation is made here.

[0032] Through the above technical solution, the multi-view imaging detection light source is provided with multiple first reflectors 200 and multiple second reflectors 300 in the optical path channel 110 in the shell 100, so that the circumferential side image of the object to be measured 20 located at the output end 112 can be reflected into the input end 111 through each of the second reflectors 300 and each of the first reflectors 200 in sequence. In this way, the detection camera 10 located at the input end 111 can capture images of multiple perspectives of the object to be measured 20 in one imaging. In addition, a first light source component 400 is also provided in the optical path channel 110. The light of the first light source component 400 is irradiated on the object to be measured 20, which can make the image of the object to be measured 20 clear after being imaged, ensuring that the images at each perspective of the detection camera 10 meet the detection requirements after one imaging. In this way, the use of the multi-view imaging detection light source can make the detection camera 10 quickly capture images and improve the imaging efficiency.

[0033] In order to improve the clarity of the image of the object 20 captured by the detection camera 10, in this embodiment, the first light source assembly 400 is located between each first reflector 200 and each second reflector 300, so that the optical path 110 can be illuminated by the first light source assembly 400. In addition, the first light source assembly 400 is arranged in a ring shape, and the central axis of the light source assembly is arranged parallel to the extension direction of the optical path 110. The light emitted by the first light source assembly 400 arranged in a ring shape can be relatively uniform and can illuminate along the direction of the optical path 110. When the object 20 at the output end 112 is reflected by each second reflector 300, the object 20 is illuminated by the light source at each viewing angle, thereby ensuring that the image captured by the detection camera 10 at each viewing angle is clear.

[0034] To further improve the clarity of images captured by the inspection camera 10 of the object 20, in some embodiments, the multi-view imaging inspection light source further includes a second light source assembly 500, which is mounted on the housing 100 and encloses the output port 112. Thus, adding the second light source assembly 500 to the illumination of the first light source assembly 400 can provide supplemental light for the object 20, further improving the clarity of images captured by the inspection camera 10 of the object 20.

[0035] Furthermore, the second light source assembly 500 is annular in shape, and the inner contour of the second light source assembly 500 is larger than the inner contour of the first light source assembly 400. This can prevent the second light source assembly 500 from blocking the light emitted by the first light source assembly 400.

[0036] In order to ensure that the image obtained by the detection camera 10 is of high clarity when taking an image of the side of the object to be measured 20, in this embodiment, the light of the second light source component 500 is irradiated in its radial direction. In this way, the side of the object to be measured 20 located on the inner side of the second light source component 500 can be better illuminated by the light of the second light source component 500 to prevent shadows, thereby ensuring that the object to be measured 20 can obtain better graphic imaging when being imaged by the detection camera 10.

[0037] See also Figure 3 and Figure 4 The first light source assembly 400 and the second light source assembly 500 both include a mounting shell 410, a circuit light board and a diffusion plate 430. The mounting shell 410 has a mounting cavity with an open end. The circuit light board is installed in the mounting cavity. The circuit light board is used to provide a light source. The diffusion plate 430 is connected to the mounting shell 410 and covers the opening of the mounting shell 410. The diffusion plate 430 is used to make the light emitted from the circuit light board more uniform.

[0038] Please continue reading Figures 1 to 3 In this embodiment, the multi-view imaging detection light source further includes a mounting base 600 and a beam splitter 700. The mounting base 600 has a first incident end and an emission end 630, which are arranged along the extension direction of the optical path 110. The emission end 630 is connected to the output end 112. The beam splitter 700 is arranged at an angle between the emission end 630 and the first incident end. In addition, the mounting base 600 also has a second incident end, which extends perpendicularly to the extension direction of the optical path 110 and is located between the first incident end and the emission end 630. The beam splitter 700 is arranged at an angle along the extension direction of the optical path 110, away from the second incident end.

[0039] The surface of the beam splitter 700 is coated with a beam splitter film, which enables the beam splitter 700 to change the penetration ratio of light and reflect part of the incident light. A detection camera 10 can be set at the first incident end and the second incident end respectively. The detection camera 10 located at the first incident end can directly capture the upper surface of the object under test 20 located at the output end 112 through the beam splitter 700, while the detection camera 10 located at the second incident end can capture the side of the object under test 20 located at the output end 112 under the reflection action of the beam splitter 700, each first reflector 200 and each second reflector 300. In this way, images of the side and top surfaces of the object under test can be collected simultaneously, which is convenient for subsequent detection and analysis of the object under test 20.

[0040] Furthermore, to prevent light energy loss due to reflection from the lens element surface during imaging by the detection camera 10 located at the first incident end, in this embodiment, the multi-view imaging detection light source further includes an anti-reflection film 800. This anti-reflection film 800 is connected to the mounting base 600 and covers the port at the first incident end. The addition of the anti-reflection film 800 reduces light reflection from the lens element surface, increases light transmittance, and thus improves image quality.

[0041] The present invention also provides a multi-view detection device, which includes a detection camera 10 and a multi-view imaging detection light source. The lens of the detection camera 10 is facing the input end 111, and the image of the object to be measured 20 can be reflected in sequence through each second reflector 300 and each first reflector 200 into the lens of the detection camera 10.

[0042] It should be noted that after the mounting bracket 600 and the beam splitter 700 are set up with a multi-view imaging detection light source, there can be two detection cameras 10 for taking images of the object to be measured 20, one located at the first incident end for taking images of the top surface of the object to be measured 20, and the other located at the second incident end for taking images of the surrounding side of the object to be measured 20.

[0043] The specific structure of the multi-view imaging detection light source refers to the above embodiment. Since the multi-view detection device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0044] The above description is only part or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A multi-view imaging detection light source, characterized in that: The multi-view imaging detection light source includes: A housing (100), the housing (100) having an optical path channel (110) and an input end (111) and an output end (112) communicating with both ends of the optical path channel (110); a plurality of first reflectors (200), each of the first reflectors (200) being arranged at intervals along the inner peripheral wall of the optical path (110), each of the first reflectors (200) being arranged adjacent to the input end (111) and having a mirror surface inclined away from the inner peripheral wall of the optical path (110) along an extension direction of the optical path (110); A plurality of second reflectors (300), each of the second reflectors (300) being arranged at intervals along the inner peripheral wall of the optical path (110), each of the second reflectors (300) being arranged adjacent to the output end (112), and its mirror surface being arranged obliquely along the extension direction of the optical path (110) and close to the inner peripheral wall of the optical path (110); an object to be detected is located at the output end (112), and an image of the object to be detected can be reflected sequentially by each of the second reflectors (300) and each of the first reflectors (200) and enter the input end (111); A first light source assembly (400) is installed in the light path channel (110), and light from the first light source assembly (400) is projected from the output end (112) along an extension direction of the light path channel (110).

2. The multi-view imaging detection light source according to claim 1, characterized in that: The first light source assembly (400) is located between each of the first reflectors (200) and each of the second reflectors (300).

3. The multi-view imaging detection light source according to claim 2, characterized in that: The first light source assembly (400) is arranged in a ring shape, and the central axis of the light source assembly is arranged in parallel with the extension direction of the light path channel (110).

4. The multi-view imaging detection light source according to claim 3, characterized in that: The multi-view imaging detection light source further includes a second light source assembly (500), which is mounted on the housing (100) and encloses the port of the output end (112).

5. The multi-view imaging detection light source according to claim 4, characterized in that: The second light source assembly (500) is annular in shape, and the inner contour of the second light source assembly (500) is larger than the inner contour of the first light source assembly (400).

6. The multi-view imaging detection light source according to claim 5, characterized in that: The light of the second light source assembly (500) is emitted in a radial direction thereof.

7. The multi-view imaging detection light source according to claim 1, characterized in that: The multi-view imaging detection light source further comprises a mounting base (600) and a beam splitter (700); the mounting base (600) comprises a first incident end and an emission end (630) arranged along the extension direction of the optical path channel (110); the emission end (630) is connected to the output end (112); and the beam splitter (700) is arranged obliquely between the emission end (630) and the first incident end.

8. The multi-view imaging detection light source according to claim 7, characterized in that: The mounting seat (600) further comprises a second incident end, the extension direction of the second incident end being perpendicular to the extension direction of the optical path channel (110), the second incident end being located between the first incident end and the emission end (630), and the beam splitter (700) being tilted in a direction away from the second incident end along the extension direction of the optical path channel (110).

9. The multi-view imaging detection light source according to claim 7, characterized in that: The multi-view imaging detection light source further comprises an anti-reflection plate (800), wherein the anti-reflection plate (800) is connected to the mounting seat (600) and covers the port of the first incident end.

10. A multi-view detection device, characterized in that: The multi-view detection device comprises a detection camera and a multi-view imaging detection light source as described in any one of claims 1 to 9, wherein the lens of the detection camera faces the input end (111), and the image of the object to be detected can be reflected by each of the second reflectors (300) and each of the first reflectors (200) in sequence into the lens of the detection camera.

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