Six-surface detection multi-angle light source

Abstract

The utility model relates to a six-surface detection multi-angle light source which comprises a U-shaped light path conduction box body, the top of the light path conduction box body is provided with a phase source inlet I, and the bottom of the light path conduction box body is provided with a phase source inlet II; a light source outlet is formed in the side wall of the light path conduction box body; the top surface corner coaxial light source is mounted at the top of the light path conduction box body through a fixing plate and is used for lighting the top surface of the object; the four line light sources are arranged below the fixing plate through rotary connecting pieces and used for lighting the four side faces of the object; the angle of the line light source can be adjusted by adjusting the rotary connecting piece; the four side prisms are installed on the side wall of the light path conduction box body through prism positioning pieces and located on the lower side of the line light source; the bottom face corner coaxial light source is arranged at the bottom of the light path conduction box body and used for lighting the bottom face of the object. According to the utility model, six surfaces of an object can be rapidly detected by one camera at the same station, so that the use efficiency of the camera and the time efficiency of station detection are improved.

Description

Technical Field

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

[0002] The visual inspection system uses a CCD camera to convert the inspected target into an image signal, which is then transmitted to a dedicated image processing system. Based on pixel distribution, brightness, color and other information, the signal is converted into a digital signal. The image processing system performs various operations on these signals to extract the characteristics of the target, such as area, quantity, position, and length, and then outputs the results based on the preset tolerance and other conditions, including size, angle, number, qualified / unqualified, presence / absence, etc., to achieve automatic recognition. Through appropriate light source lighting design, the target information and background information in the image can be optimally separated, which can greatly reduce the difficulty of segmentation and recognition of the image processing algorithm, while improving the positioning and measurement accuracy of the system, and improving the reliability and overall performance of the system.

[0003] Currently, LED light sources, halogen lamps (fiber optic light sources), and high-frequency fluorescent lamps are commonly used in the field of visual inspection. However, the illumination angles of the above light sources are usually fixed, with a narrow illumination range and poor adjustability. If it is necessary to shoot multiple angles of the object to be tested, multiple cameras must be used to shoot or adjust the angle of the object, resulting in high inspection costs and low efficiency of visual inspection. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a multi-angle light source for six-sided detection. The light sources are distributed on the top surface, four side surfaces and the bottom surface. At the same workstation, one camera can be used to quickly detect the six surfaces of an object, thereby improving the camera usage efficiency and the timeliness of workstation detection.

[0005] In order to solve the above technical problems, the utility model provides a six-sided detection multi-angle light source, including:

[0006] The light path conduction box has a U-shaped structure, and a phase source inlet 1 is provided on the top of the light path conduction box, and a phase source inlet 2 is provided on the bottom; a light source outlet is provided on the side wall of the light path conduction box; the light path conduction box is used to emit the light entering the phase source inlet 1 and the phase source inlet 2 from the light source outlet;

[0007] A top corner coaxial light source is installed on the top of the light path conduction box through a fixing plate, and is used to illuminate the top surface of the object; the top corner coaxial light source comprises a housing and a first LED light board, a first diffuse reflection plate, a second 45-degree beam splitter, and a second window sheet arranged in the housing; wherein the second window sheet is arranged opposite to the phase source inlet 1; the light emitted by the top corner coaxial light source enters the light path conduction box from the phase source inlet 1 after being reflected by the object;

[0008] Linear light sources, including four, are all arranged below the fixed plate through a rotating connector, and are used to illuminate the four sides of the object; the angle of the linear light sources can be adjusted by adjusting the rotating connector;

[0009] The side prisms include four side prisms, which are all mounted on the side wall of the light path transmission box through prism positioning pieces and are located at the lower side of the line light source; the light emitted by the line light source is reflected by the object, the side prism and the second 45-degree beam splitter in sequence and then enters the light path transmission box from the phase source entrance one;

[0010] The bottom corner coaxial light source is arranged at the bottom of the light path conduction box and is used to illuminate the bottom surface of the object. The light emitted by the bottom corner coaxial light source enters the light path conduction box from the second phase source entrance after being reflected by the object.

[0011] In one embodiment of the utility model, a top reflector, a first 45-degree beam splitter, a first window, a middle reflector and a bottom reflector are arranged inside the light path conduction box, and the top reflector and the first 45-degree beam splitter are arranged in parallel; the first window and the middle reflector are arranged in parallel on both sides of the first 45-degree beam splitter, and both form an angle of 45 degrees with the first 45-degree beam splitter, and the bottom reflector is arranged at the light outlet end of the second phase source entrance.

[0012] In one embodiment of the utility model, the line light source includes a shell, a second LED light board and a focusing rod arranged in the shell, and the focusing rod is arranged in parallel with the second LED light board in the shell.

[0013] In one embodiment of the present invention, the rotating connecting member is a rotating adjustable angle bracket, and both ends of the housing of the linear light source are mounted on the bottom of the fixing plate through the rotating adjustable angle bracket.

[0014] In one embodiment of the utility model, the bottom corner coaxial light source includes a shell and a third LED light board, a third 45-degree beam splitter, a second diffuser and a third window sheet arranged in the shell, and the third window sheet is arranged opposite to the second phase source entrance.

[0015] In an embodiment of the present invention, the prism positioning member is provided with an opening, and the inner wall of the opening is provided with four inclined surfaces connected to each other.

[0016] In one embodiment of the present invention, the angle between the inclined surface and the horizontal direction is 64 degrees, and the side prism is attached to the surface of the inclined surface.

[0017] In an embodiment of the utility model, a square hole is provided in the middle of the fixing plate to form a U-shaped structure.

[0018] In one embodiment of the present invention, a positioning ring for positioning a camera lens is provided on the side wall of the light path conduction box at the light source outlet.

[0019] In one embodiment of the present invention, the top corner coaxial light source, the line light source and the bottom corner coaxial light source are all controlled by independent coaxial light source power lines.

[0020] The above technical solution of the utility model has the following advantages compared with the prior art:

[0021] The utility model discloses a six-sided detection multi-angle light source, wherein the light sources are distributed on the top surface, four side surfaces and the bottom surface, so that during machine vision detection, the six surfaces of a square object can be detected quickly at the same workstation by using one camera, thereby improving the camera use efficiency and the timeliness of the workstation detection; and each of the above light sources can be independently controlled to cooperate with the camera to take pictures, thereby avoiding interference between light sources; the linear light source can also be adjusted in angle according to the actual thickness of the object to be detected, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the six-sided detection multi-angle light source in the preferred embodiment of the utility model;

[0024] Figure 2 yes Figure 1 The cross-sectional view of the six-sided detection multi-angle light source shown;

[0025] Figure 3 yes Figure 1 The light path diagram of the six-sided detection multi-angle light source for top surface lighting is shown;

[0026] Figure 4 yes Figure 1 The light path diagram of the six-sided detection multi-angle light source for side lighting is shown;

[0027] Figure 5 yes Figure 1 The diagram shows the optical path of the bottom surface when the six-sided detection multi-angle light source is used to illuminate the bottom surface. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1-2 As shown, the six-sided detection multi-angle light source described in the utility model includes:

[0030] The light path conduction box 1 is a U-shaped structure, wherein a phase source inlet 1 is provided on the top of the light path conduction box 1, and a phase source inlet 2 is provided on the bottom; a light source outlet is provided on the side wall of the light path conduction box 1; the light path conduction box 1 is used to emit the light entering the phase source inlet 1 and the phase source inlet 2 from the light source outlet;

[0031] The top corner coaxial light source 2 is installed on the top of the light path transmission box 1 through a fixing plate 5, and is used to illuminate the top surface of the object 100; the top corner coaxial light source 2 includes a shell and a first LED light board 21, a first diffuse reflection plate 22, a second 45-degree beam splitter 23 and a second window sheet 24 arranged in the shell; wherein the second window sheet 24 is arranged opposite to the phase source entrance 1; the light emitted by the top corner coaxial light source 2 enters the light path transmission box 1 from the phase source entrance 1 after being reflected by the object 100;

[0032] The line light sources 3 include four of them, which are all arranged below the fixing plate 5 through the rotating connecting member 4, and are used to illuminate the four sides of the object 100; the angle of the line light sources 3 can be adjusted by adjusting the rotating connecting member 4;

[0033] The side prisms 6 include four of them, which are all mounted on the side wall of the light path transmission box 1 through the prism positioning member 7 and are located at the lower side of the line light source 3; the light emitted by the line light source 3 is reflected by the object 100, the side prism 6 and the second 45-degree beam splitter 23 in sequence, and then enters the light path transmission box 1 from the phase source entrance 1;

[0034] The bottom corner coaxial light source 8 is arranged at the bottom of the light path transmission box 1 and is used to illuminate the bottom surface of the object 100. The light emitted by the bottom corner coaxial light source 8 enters the light path transmission box 1 from the second phase source entrance after being reflected by the object 100.

[0035] A top reflector 13, a first 45-degree beam splitter 14, a first window 15, a middle reflector 16 and a bottom reflector 17 are arranged inside the light path conduction box 1. The top reflector 13 and the first 45-degree beam splitter 14 are arranged in parallel; the first window 15 is arranged at the light source outlet of the light path conduction box 1; the middle reflector 16 is arranged in parallel with the first window 15, and the middle reflector 16 and the first window 15 are respectively located on both sides of the first 45-degree beam splitter 14, and the bottom reflector 17 is arranged at the light outlet end of the second phase source entrance.

[0036] Preferably, the line light source 3 comprises a shell, a second LED light board 31 and a focusing rod 32 arranged in the shell, and the focusing rod 32 is arranged in parallel with the second LED light board 31 in the shell.

[0037] In this embodiment, the rotating connecting member 4 is a rotatable adjustable angle bracket, and both ends of the housing of the linear light source 3 are mounted on the bottom of the fixing plate 5 through the rotatable adjustable angle bracket.

[0038] Preferably, the bottom corner coaxial light source 8 comprises a shell and a third LED light board 81, a third 45-degree beam splitter 82, a second diffuser plate 83 and a third window sheet 84 arranged in the shell, and the third window sheet 84 is arranged opposite to the second phase source inlet.

[0039] In addition, the prism positioning member 7 is provided with an opening 71 , and the inner wall of the opening 71 is provided with four inclined surfaces connected to each other. The angle between the inclined surface and the horizontal direction is 64 degrees, and the side prism 6 is attached to the surface of the inclined surface 72 .

[0040] Preferably, a square hole is provided in the middle of the fixing plate 5 to form a U-shaped structure. The top surface corner coaxial light source 2 is fixed by an angle code above the fixing plate 5, and four line light sources 3 are fixed by a rotatable adjustable angle code below the fixing plate 5.

[0041] In this embodiment, a positioning ring 18 for positioning the camera lens is provided on the side wall of the light path conducting box 1 at the light source outlet.

[0042] Furthermore, the top corner coaxial light source 2, line light source 3 and bottom corner coaxial light source 8 are controlled by three independent coaxial light source power lines. The second LED light board 31 and the third LED light board 81 of the top corner coaxial light source 2 and the bottom corner coaxial light source 8 are both provided with RGB lamp beads, which can emit various colors and full color system lights to meet the needs of complementary colors for the object under test to highlight the defective traces of the object, and the line light sources 3 on the four sides are white light; the above three light sources at different positions are controlled by independent coaxial light source power lines, which can avoid interference between them.

[0043] When in use, the lens 101 and the camera 102 are mounted on the positioning ring 18, the object 100 to be detected is placed on the glass stage 103, and the object 100 is ensured to be in a vertical position relative to the opening 71 on the prism positioning member 7, and the top corner coaxial light source 2, the line light source 3 and the bottom corner coaxial light source 8 are controlled by the coaxial light source power line to illuminate the object 100 from six directions, as follows:

[0044] The top surface is illuminated, and the four-sided adjustable line light source 3 and the bottom corner coaxial light source 8 are turned off to avoid interference, such as Figure 3 As shown; the top surface angle coaxial light source 2 illuminates the top surface of the object 100, and the image passes through the top surface angle coaxial light source beam splitter, turns right 90 degrees, reaches the top surface reflector 13 of the light path transmission box 1, turns downward 90 degrees again, reaches the first 45-degree beam splitter 14 of the light path transmission box 1, and turns right 90 degrees to reach the lens 101 and the camera 102.

[0045] Lighting is applied from all sides, and the top corner coaxial light source 2 and the bottom corner coaxial light source 8 are turned off to avoid interference, such as Figure 4 As shown, the light emitted by the four-sided angle-adjustable line light source 3 irradiates the side of the object 100, and the image passes through the top angle coaxial light source beam splitter, turns right 90 degrees, reaches the top reflector 13 of the light path transmission box 1, turns downward 90 degrees again, reaches the first 45-degree beam splitter 14 of the light path transmission box 1, and turns right 90 degrees to reach the lens 101 and the camera 102.

[0046] Light the bottom surface, turn off the four-sided adjustable line light source 3 and the top corner coaxial light source 2 to avoid interference, such as Figure 5 As shown, the bottom corner coaxial light source 8 illuminates the bottom surface of the object, and the image passes through the second 45-degree beam splitter 23 of the bottom corner coaxial light source 2, turns right 90 degrees, reaches the bottom reflector 17 of the light path transmission box 1, and then turns upward 90 degrees to reach the first 45-degree beam splitter 14 of the light path transmission box 1. At this time, the first 45-degree beam splitter 14 will reflect the image to the left, turn left 90 degrees in time, reach the middle reflector 16, and return the image vertically to the original path to reach the lens 101 and the camera 102.

[0047] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A six-sided detection multi-angle light source, characterized in that: include: The light path conduction box has a U-shaped structure, and a phase source inlet 1 is provided on the top of the light path conduction box, and a phase source inlet 2 is provided on the bottom; a light source outlet is provided on the side wall of the light path conduction box; the light path conduction box is used to emit the light entering the phase source inlet 1 and the phase source inlet 2 from the light source outlet; A top corner coaxial light source is installed on the top of the light path conduction box through a fixing plate, and is used to illuminate the top surface of the object; the top corner coaxial light source comprises a housing and a first LED light board, a first diffuse reflection plate, a second 45-degree beam splitter, and a second window sheet arranged in the housing; wherein the second window sheet is arranged opposite to the phase source inlet 1; the light emitted by the top corner coaxial light source enters the light path conduction box from the phase source inlet 1 after being reflected by the object; Linear light sources, including four, are all arranged below the fixed plate through a rotating connector, and are used to illuminate the four sides of the object; the angle of the linear light sources can be adjusted by adjusting the rotating connector; The side prisms include four side prisms, which are all mounted on the side wall of the light path transmission box through prism positioning pieces and are located at the lower side of the line light source; the light emitted by the line light source is reflected by the object, the side prism and the second 45-degree beam splitter in sequence and then enters the light path transmission box from the phase source entrance one; The bottom corner coaxial light source is arranged at the bottom of the light path conduction box and is used to illuminate the bottom surface of the object. The light emitted by the bottom corner coaxial light source enters the light path conduction box from the second phase source entrance after being reflected by the object.

2. The six-sided detection multi-angle light source according to claim 1, characterized in that: A top reflector, a first 45-degree beam splitter, a first window, a middle reflector and a bottom reflector are arranged inside the light path conduction box. The top reflector and the first 45-degree beam splitter are arranged in parallel; the first window and the middle reflector are arranged in parallel on both sides of the first 45-degree beam splitter, and both form an angle of 45 degrees with the first 45-degree beam splitter, and the bottom reflector is arranged at the light outlet end of the second phase source entrance.

3. The six-sided detection multi-angle light source according to claim 1, characterized in that: The line light source comprises a shell, a second LED light board and a focusing rod arranged in the shell, and the focusing rod is arranged in parallel with the second LED light board in the shell.

4. The six-sided detection multi-angle light source according to claim 3, characterized in that: The rotating connecting piece is a rotating adjustable angle bracket, and both ends of the housing of the linear light source are mounted on the bottom of the fixing plate through the rotating adjustable angle bracket.

5. The six-sided detection multi-angle light source according to claim 1, characterized in that: The bottom corner coaxial light source comprises a shell and a third LED light board, a third 45-degree beam splitter, a second diffuser and a third window sheet arranged in the shell. The third window sheet is arranged opposite to the second phase source inlet.

6. The six-sided detection multi-angle light source according to claim 1, characterized in that: The prism positioning piece is provided with an opening, and the inner wall of the opening is provided with four inclined surfaces which are connected to each other.

7. The six-sided detection multi-angle light source according to claim 6, characterized in that: The angle between the inclined surface and the horizontal direction is 64 degrees, and the side prism is attached to the surface of the inclined surface.

8. The six-sided detection multi-angle light source according to claim 1, characterized in that: A square hole is arranged in the middle of the fixing plate to form a U-shaped structure.

9. The six-sided detection multi-angle light source according to claim 1, characterized in that: A positioning ring for positioning a camera lens is provided on the side wall of the light path conduction box at the light source outlet.

10. The six-sided detection multi-angle light source according to claim 1, characterized in that: The top corner coaxial light source, the line light source and the bottom corner coaxial light source are respectively controlled by independent coaxial light source power lines.

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