A detection light source and a detection device

Abstract

The utility model discloses a detection light source, this detection light source includes: base, circuit lamp board and spectrometer plate, the base is provided with the irradiation channel, the base has the first surface and with the first surface adjacent setting second surface and third surface, the first surface is provided with the hole of shooting in, the second surface and the first surface are 45 degree angle setting, the second surface is provided with the hole of shooting out, the hole of shooting in and the hole of shooting out are communicated the both ends of irradiation channel, the third surface and the first surface perpendicularly set up, circuit lamp board can be dismantled and install in the first surface and cover the hole of shooting in, the lamp pearl of circuit lamp board is located in the irradiation channel, the spectrometer plate is installed on the second surface, and the spectrometer plate covers the hole of shooting out. Such setting, namely can adopt smaller lighting light source also can obtain high definition, high accuracy's imaging picture, makes the detection light source in satisfying the demand of analysis, detection while miniaturization.

Description

Technical Field

[0001] This utility model relates to the field of optical detection technology, and in particular to a detection light source. Background Technology

[0002] Image inspection systems are a common technology used in quality inspection lines for automated product inspection. They use lighting and camera devices to capture images of the products being inspected, and then software analyzes the images to obtain information such as the product's outline, surface defects, circuit soldering, and surface color. This information is crucial for subsequent sorting and re-inspection of the products. The use of image inspection systems can improve product output and quality, and significantly reduce the cost of manual inspection.

[0003] In image inspection systems, visual imaging is performed first. At this stage, a light source is usually used to illuminate the inspected product to make the image clearer and facilitate further analysis. However, when illuminating the inspected product, a large light source is generally required to obtain a clear image. This results in a large light source that occupies a lot of space. In addition, a large light source can easily cause excessive reflection of light from the imaging surface, leading to halo effects in the image and poor representation of surface details of the inspected product. Conversely, when the light source is made smaller, the accuracy of the image cannot meet the needs of analysis and inspection. Therefore, improvements are urgently needed. Utility Model Content

[0004] The main purpose of this invention is to propose a detection light source that solves the problem that detection light sources in related technologies are large in size and cannot meet the requirements of imaging illumination.

[0005] To achieve the above objectives, this utility model proposes a detection light source, the detection light source comprising: The base has an irradiation channel, a first surface and a second and a third surface adjacent to the first surface, an injection hole on the first surface, an injection hole on the second surface at a 45° angle to the first surface, an injection hole on the second surface, the injection hole and the injection hole communicating with the two ends of the irradiation channel, and the third surface perpendicular to the first surface. A circuit light board, wherein the circuit light board is detachably mounted on the first surface and covers the injection hole, and the lamp beads of the circuit light board are located in the illumination channel; A beam splitter is mounted on the second surface and covers the ejection port.

[0006] In some embodiments, the second surface is provided with two ribs, which are located on both sides of the ejection hole, and the beam splitter is connected to the two ribs.

[0007] In some embodiments, the two sides of the beam splitter are respectively bonded to the two ribs.

[0008] In some embodiments, the detection light source further includes a diffuser plate, which is installed in the illumination channel and covers the LED arrangement of the circuit board.

[0009] In some embodiments, the first surface is provided with a groove, the inner contour of which is larger than the inner contour of the injection hole, and the diffuser plate is detachably mounted in the groove.

[0010] In some embodiments, the bottom of the groove is further provided with two first threaded holes, which are located on both sides of the diffuser plate. The detection light source also includes two screws, which are connected to the corresponding first threaded holes to fix the diffuser plate in the groove.

[0011] In some embodiments, the circuit board has two communication interfaces, which are located outside the illumination channel and are arranged opposite to each other.

[0012] In some embodiments, the third surface is provided with a plurality of second threaded holes, and each of the second threaded holes is provided on the third surface at intervals.

[0013] In some embodiments, the third surface is provided with at least one positioning hole.

[0014] This utility model also provides a detection device, which includes a controller, a detection camera, and a detection light source as described above. The controller is communicatively connected to the detection camera and the circuit light board. The detection camera is located above the detection light source, and the shooting direction of the detection camera is perpendicular to the illumination direction of the circuit light board.

[0015] The beneficial effects of this utility model's technical solution are as follows: The detection light source of this utility model is equipped with a beam splitter and a circuit light board on a base. The beam splitter and the circuit light board are set at a 45° angle, so that the light emitted by the circuit light board is divided into two parts. One part is transmitted light parallel to the light emitted by the circuit light board, which is projected onto the product being tested to provide illumination. The other part is reflected light perpendicular to the light emitted by the circuit light board, which is parallel to the shooting direction of the detection camera to brighten the shooting path of the detection camera. In addition, the beam splitter can also reflect the product being tested, so that the detection camera can capture the product being tested through the beam splitter. In this way, high-definition and high-precision imaging images can be obtained with a smaller illumination light source, so that the detection light source can meet the needs of analysis and detection while being miniaturized. Attached Figure Description

[0016] Figure 1 This is an exploded view of the detection light source according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the detection light source according to an embodiment of the present invention; Figure 3 for Figure 1 Schematic diagram of the central base; Figure 4 This is a schematic diagram of the detection device according to an embodiment of the present invention.

[0017] Explanation of icon numbers: 100, Base; 110, Irradiation channel; 120, Injection hole; 130, Injection hole; 140, First surface; 141, Groove; 142, First threaded hole; 150, Second surface; 151, Rib; 160, Third surface; 170, Positioning hole; 180, Second threaded hole; 200, Circuit board; 210, Communication interface; 300, Beam splitter; 400, Diffuser; 500, Screw; 10, Detection light source; 20, Detection camera; 30, Product under test. Detailed Implementation

[0018] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. In addition, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0019] To address the technical deficiencies in related technologies, this utility model provides a detection light source 10. Please refer to [link / reference needed]. Figures 1 to 4 The detection light source 10 includes: a base 100, a circuit lamp board 200, and a beam splitter 300. The base 100 serves as a supporting component for each part of the detection light source 10. The base 100 can be made of plastic injection molding or machined for imaging, and no specific limitation is made here.

[0020] The base 100 is provided with an illumination channel 110, and the base 100 has a first surface 140 and a second surface 150 and a third surface 160 adjacent to the first surface 140. The first surface 140 is provided with an injection hole 120, the second surface 150 is set at a 45° angle to the first surface 140, and the second surface 150 is provided with an emission hole 130. The injection hole 120 and the emission hole 130 communicate with the two ends of the illumination channel 110, and the third surface 160 is set perpendicular to the first surface 140. The circuit lamp board 200 is detachably installed on the first surface 140 and covers the injection hole 120. The lamp beads of the circuit lamp board 200 are located in the illumination channel 110. The beam splitter 300 is installed on the second surface 150 and covers the emission hole 130.

[0021] It should be noted that the LEDs on the circuit board 200 are rectangular in shape. In order to ensure that the light emitted by the LEDs is large, the injection hole 120 is square and matches the outer contour of the rectangular part of the LED, so as to ensure that the light can be fully irradiated to the emission hole 130 along the direction of the injection hole 120.

[0022] In addition, there are several ways to detachably mount the circuit light board 200 on the first surface 140. The circuit light board 200 can be mounted on the first surface 140 by snap-fit ​​mounting; the circuit light board 200 can also be mounted on the first surface 140 by plug-in mounting; the circuit light board 200 can also be mounted on the first surface 140 by screw 500 locking mounting. The specific detachable mounting method used for the circuit light board 200 on the first surface 140 is not specifically limited here.

[0023] To facilitate maintenance and replacement of the circuit light board 200, in this embodiment, the circuit light board 200 is installed on the first surface 140 using a detachable installation method with screw fastening.

[0024] In addition, the surface of the beam splitter 300 is coated with a beam splitting film, which allows the beam splitter 300 to change the light transmission ratio and reflect part of the incident light, so that the incident light can be half reflected and half transmitted, thereby splitting the light emitted by the circuit light board 200 into a reflected beam and a transmitted beam, so that the reflected beam illuminates the detection camera 20 and the transmitted beam illuminates the product under test 30.

[0025] Through the above technical solution, a beam splitter 300 and a circuit lamp board 200 are set on the base 100. The beam splitter 300 and the circuit lamp board 200 are set at a 45° angle, so that the light emitted by the circuit lamp board 200 is divided into two parts. One part is transmitted light parallel to the light emitted by the circuit lamp board 200. This transmitted light is projected onto the product being tested to provide illumination. The other part is reflected light perpendicular to the light emitted by the circuit lamp board 200. This reflected light is parallel to the shooting direction of the detection camera 20 to brighten the shooting path of the detection camera 20. In addition, the beam splitter 300 can also reflect the product being tested 30, so that the detection camera 20 can capture the product being tested 30 through the beam splitter. With this setting, high-definition and high-precision imaging images can be obtained even with a smaller illumination source, so that the detection light source 10 can be miniaturized while meeting the needs of analysis and detection.

[0026] Considering that the surface of the beam splitter 300 is coated with a beam-splitting film, the connection between the beam splitter 300 and the second surface 150 must avoid damaging the beam-splitting film. Therefore, in this embodiment, the second surface 150 is provided with two protruding ribs 151, located on both sides of the emission hole 130. The beam splitter 300 is connected to the two protruding ribs 151, and both sides of the beam splitter 300 are respectively bonded to the two protruding ribs 151. With this arrangement, the beam splitter 300 is bonded to the two protruding ribs 151 on its two sides, avoiding damage to the beam-splitting film on the upper surface of the beam splitter 300, ensuring reliable installation of the beam splitter 300 and achieving its beam-splitting function.

[0027] To ensure that the light emitted from the circuit light board 200 is evenly distributed onto the beam splitter 300, in this embodiment, the detection light source 10 also includes a diffuser plate 400. The diffuser plate 400 is installed within the illumination channel 110 and covers the LEDs of the circuit light board 200. The diffuser plate 400 improves the diffusion effect of the light source, thereby obtaining uniform illumination. By adding a diffuser plate 400 in front of the circuit light board 200, the uniformity of illumination can be increased, the directivity of the light source can be reduced, and the final acquired image can be clearer and more accurate.

[0028] To facilitate the installation of the diffuser plate 400, in some embodiments, the first surface 140 of the base 100 is provided with a groove 141, the inner contour of which is larger than the inner contour of the injection hole 120. The diffuser plate 400 is detachably installed in the groove 141. The bottom of the groove 141 is also provided with two first threaded holes 142, located on both sides of the diffuser plate 400. The detection light source 10 also includes two screws 500, which are connected to the corresponding first threaded holes 142 to fix the diffuser plate 400 in the groove 141. At this time, the nuts of the screws 500 abut against the edge of the diffuser plate 400, so that the two sides of the diffuser plate 400 are clamped by the nuts and the bottom of the groove 141, making the diffuser plate 400 relatively fixed to the bottom of the groove 141. Thus, the diffuser plate 400 can be installed in the groove 141 and located in front of the LED beads of the circuit light board 200.

[0029] In some embodiments, the circuit light board 200 has two communication interfaces 210 located outside the illumination channel 110, with the ports of the two communication interfaces 210 facing away from each other. This allows communication cables to be connected to both sides of the circuit light board 200, facilitating user connection.

[0030] On the quality inspection production line, the detection light source 10 needs to be positioned and fixed to provide good illumination. Therefore, in this embodiment, the third surface 160 is provided with a plurality of second threaded holes 180, which are spaced apart on the third surface 160. In addition, the third surface 160 is provided with at least one positioning hole 170. This facilitates the positioning and fixing of the detection light source 10.

[0031] Please see Figure 4 The present invention also provides a detection device, which includes a controller (not shown), a detection camera 20 and a detection light source 10 as described above. The controller is communicatively connected to the detection camera 20 and the circuit light board 200. The detection camera 20 is located above the detection light source 10, and the shooting direction of the detection camera 20 is perpendicular to the illumination direction of the circuit light board 200.

[0032] The controller is used to control the operation of the inspection camera 20 and the circuit light board 200. When the product under test 30 is sent to the inspection station, the controller can control the circuit light board 200 to turn on the illumination, and then the inspection camera 20 will take pictures to acquire images.

[0033] It should be noted that the controller can be an electrical component that can receive external signals and output execution command signals, such as a microcontroller, PWM controller, PLC controller, or microprocessor, and no specific limitation is made here.

[0034] Furthermore, the specific structure of the detection light source 10 is as described in the above embodiments. Since the detection device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0035] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A detection light source, characterized in that, The detection light source includes: A base (100) is provided with an irradiation channel (110). The base (100) has a first surface (140) and a second surface (150) and a third surface (160) disposed adjacent to the first surface (140). The first surface (140) is provided with an injection hole (120). The second surface (150) is disposed at a 45° angle to the first surface (140). The second surface (150) is provided with an emission hole (130). The injection hole (120) and the emission hole (130) communicate with the two ends of the irradiation channel (110). The third surface (160) is disposed perpendicular to the first surface (140). A circuit light board (200) is detachably mounted on the first surface (140) and covers the injection hole (120). The lamp beads of the circuit light board (200) are located in the illumination channel (110). A beam splitter (300) is mounted on the second surface (150) and covers the ejection port (130).

2. The detection light source according to claim 1, characterized in that, The second surface (150) is provided with two ribs (151), which are located on both sides of the ejection hole (130), and the beam splitter (300) is connected to the two ribs (151).

3. The detection light source according to claim 2, characterized in that, The two sides of the beam splitter (300) are respectively bonded to the two ribs (151).

4. The detection light source according to claim 1, characterized in that, The detection light source also includes a diffuser plate (400), which is installed in the illumination channel (110) and covers the lamp beads of the circuit lamp board (200).

5. The detection light source according to claim 4, characterized in that, The first surface (140) is provided with a groove (141), the inner contour of the groove (141) is larger than the inner contour of the injection hole (120), and the diffuser plate (400) is detachably installed in the groove (141).

6. The detection light source according to claim 5, characterized in that, The bottom of the groove (141) is also provided with two first threaded holes (142), which are located on both sides of the diffuser plate (400). The detection light source also includes two screws (500), which are connected to the corresponding first threaded holes (142) to fix the diffuser plate (400) in the groove (141).

7. The detection light source according to claim 1, characterized in that, The circuit board (200) has two communication interfaces (210), which are located outside the illumination channel (110) and are arranged opposite to each other.

8. The detection light source according to claim 1, characterized in that, The third surface (160) is provided with a plurality of second threaded holes (180), and each of the second threaded holes (180) is provided on the third surface (160) at intervals.

9. The detection light source according to claim 1, characterized in that, The third surface (160) is provided with at least one positioning hole (170).

10. A detection device, characterized in that, The detection device includes a controller, a detection camera (20), and a detection light source as described in any one of claims 1 to 9. The controller is communicatively connected to the detection camera (20) and the circuit light board (200). The detection camera (20) is located above the detection light source, and the shooting direction of the detection camera (20) is perpendicular to the illumination direction of the circuit light board (200).

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