Combined light source and visual inspection device

Abstract

The utility model relates to the technical field of light source structures, and discloses a combined light source and a visual inspection device. Comprising a shell, a first lamp panel installed on the shell, a diffusion plate installed on the light emitting side of the first lamp panel, a Fresnel lens installed on the shell, a total reflection mirror rotatably installed on the shell and a second lamp panel installed on the shell, and the inclination angle of the total reflection mirror is adjustable; light emitted by the first lamp panel can penetrate through the diffusion plate to be emitted to a workpiece to be detected, light emitted by the second lamp panel penetrates through the Fresnel lens to be emitted to the total reflection mirror, and the light is reflected by the total reflection mirror to be emitted to the workpiece to be detected. According to the combined light source and the visual inspection device, the problem that the position of a high-brightness light spot is adjustable under uniform illumination is solved, and workpieces can be better detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to light source structure technical field especially relates to a combined light source and visual inspection device. BACKGROUND

[0002] Machine vision is a kind of technology using machine to replace human eye to carry out measurement and judgment, and it is a fast development branch of artificial intelligence.In machine vision detection, light source is very important, and the quality of light source will directly affect actual detection result.

[0003] Current light source includes linear light source, point light source, parallel light source, ring light source etc.These light sources are mostly fixed in the light illumination effect formed by the workpiece to be measured, and the position of light spot relative to the detection workpiece cannot be changed, and local adjustment of highlight illumination position effect cannot be achieved after forming uniform light illumination effect, therefore it is difficult to meet the detection illumination needs of part new workpiece.

[0004] Therefore, it is necessary to design a combined light source and visual inspection device to solve the problem of adjustable position of highlight light spot under uniform light illumination, and better detect the workpiece to be measured.

[0005] The above information is given as background information only to assist with understanding the present disclosure, and does not constitute admission that any of the information provided herein is applicable as prior art against the present disclosure. SUMMARY

[0006] The utility model provides a combined light source and visual inspection device, solve the problem of adjustable position of highlight light spot under uniform light illumination, and better detect the workpiece.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A combined light source, including shell, first lamp plate installed on the shell, diffusion plate installed on the light emitting side of first lamp plate, fresnel lens installed on the shell, full reflection mirror rotatably installed on the shell and second lamp plate installed on the shell, and the inclination angle of full reflection mirror is adjustable;

[0009] The light emitted by first lamp plate can pass through diffusion plate and be shot to workpiece to be measured, the light emitted by second lamp plate passes through fresnel lens and is shot to full reflection mirror, and full reflection mirror reflects light and shoots to workpiece to be measured.

[0010] Optionally, the fresnel lens and the second lamp plate are located between the first lamp plate and the diffusion plate;

[0011] The fresnel lens is located directly above the first lamp plate.

[0012] Optionally, the first lamp panel comprises a first circuit board and an array of first lamp beads mounted on the first circuit board close to the diffusion plate;

[0013] The first lamp beads are opposite to the diffusion plate, and the diffusion plate is parallel to the first circuit board.

[0014] Optionally, the second lamp panel comprises a second circuit board and a high-brightness lamp bead mounted on the second circuit board.

[0015] Optionally, the high-brightness lamp bead has a lumen output of not less than 120 lm / w.

[0016] Optionally, the housing is provided with a mounting plate on a side away from the diffusion plate, the mounting plate is connected with a mounting shaft, the mounting shaft is rotatably connected with a fixing block, and one end of the total reflection mirror is embedded in the fixing block.

[0017] Optionally, the mounting plate has an inclined surface, and the mounting shaft is connected to the inclined surface at an end thereof.

[0018] Optionally, the first lamp panel is perpendicular to the second lamp panel.

[0019] Optionally, the first lamp panel and the second lamp panel are both attached to the housing.

[0020] A visual detection device comprises the combined light source according to any one of the above.

[0021] Compared with the prior art, the combined light source has the following beneficial effects:

[0022] The combined light source and the visual detection device have the following beneficial effects:

[0023] The combined light source and the visual detection device have the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0025] Figure 1 Figure 1 is a schematic diagram of the mounting structure of the combined light source provided by the embodiments of the present application.

[0026] The figure mark: 1, the shell; 11, the mounting plate; 111, the inclined surface; 12, the mounting shaft; 13, the fixed block; 2, the first lamp plate; 21, the first circuit board; 22, the first lamp bead; 3, the diffusion plate; 4, the Fresnel lens; 5, the total reflection mirror; 6, the second lamp plate; 61, the second circuit board; 62, the high-brightness lamp bead. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0028] In this paper, the "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0029] Unless otherwise defined, the meaning of the technical terms used in this paper is the same as that generally understood by those skilled in the art to which the present application belongs; The use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0030] In the description of the present application, the word "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this paper generally represents that the associated objects before and after are a kind of "or" logical relationship.

[0031] In the present application, the terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, primary or secondary, or order relationship between the entities or operations.

[0032] In the present application, the "includes", "contains", "has", or other similar expressions used in the statements are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of additional elements in the process, method or workpiece including the elements, so that the process, method or workpiece including a series of elements can not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or workpiece.

[0033] As the same understanding as in the "Guidelines for Examination", in the present application, the expressions such as "greater than", "less than", "exceed" are understood as not including the number; the expressions such as "above", "below", "within" are understood as including the number. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times", etc., unless otherwise explicitly specified.

[0034] In the description of the embodiments of the present application, the spatial-related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. The indicated orientation or position relationship is based on the orientation or position relationship shown in the specific embodiment or the drawing, and is only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and does not indicate or imply that the indicated device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0035] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", etc. should be understood broadly. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral setting; it can be a mechanical connection, or an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] Embodiment one

[0037] In view of the defects of the existing combined light source, the applicant, based on rich practical experience and professional knowledge in designing and manufacturing such workpieces for many years, and combined with the use of theories, actively studies and innovates, in order to create a technology that can solve the defects in the prior art, so that the combined light source is more practical. After continuous research, design, and repeated trial and improvement of samples, the practical new type is finally created.

[0038] Please refer to Figure 1 The embodiment of the present application provides a combined light source, which comprises a shell 1, a first lamp plate 2 mounted on the shell 1, a diffusion plate 3 mounted on the light-emitting side of the first lamp plate 2, a Fresnel lens 4 mounted on the shell 1, a total reflector 5 rotatably mounted on the shell 1, and a second lamp plate 6 mounted on the shell 1. In this embodiment, the first lamp plate 2 is directly opposite the diffusion plate 3, and the second lamp plate 6 is directly opposite the Fresnel lens 4, and the inclination angle of the total reflector 5 is adjustable.

[0039] The light emitted by the first lamp plate 2 can pass through the diffusion plate 3 and be emitted to the workpiece to be tested, thereby forming a uniform light effect and illuminating the entire outer side of the workpiece to be tested, facilitating the detection of the entire outer periphery of the workpiece to be tested. The light emitted by the second lamp plate 6 passes through the Fresnel lens 4 and is emitted to the total reflector 5, which reflects the light to the workpiece to be tested, forming a local highlight spot on the surface of the workpiece to be tested, and the position of the highlight spot is adjustable, so that the highlight spot can accurately irradiate the testing position of the workpiece to be tested. It should be noted that the uniform light is generally used for detecting whether the overall appearance is qualified; the highlight spot is used for detecting whether the surface of the set area of the workpiece to be tested is qualified, such as detecting whether there are small surface cracks, scratches, etc. It should be further noted that the workpiece to be tested can be an assembly composed of multiple components.

[0040] Optionally, the Fresnel lens 4 and the second lamp plate 6 are located between the first lamp plate 2 and the diffusion plate 3; the Fresnel lens 4 is located directly above the first lamp plate 2. As shown in Figure 1 The Fresnel lens 4 and the second lamp plate 6 do not affect the normal light-emitting effect of the first lamp plate 2.

[0041] Optionally, the first lamp plate 2 comprises a first circuit board 21 and a plurality of first lamp beads 22 arranged in an array on one side of the first circuit board 21 close to the diffusion plate 3; the first lamp beads 22 are directly opposite the diffusion plate 3, and the diffusion plate 3 is parallel to the first circuit board 21. The plurality of first lamp beads 22 are arranged in a rectangular array, so that the light emitted by the diffusion plate 3 is more uniform.

[0042] Optionally, the second lamp panel 6 comprises a second circuit board 61 and high-brightness lamp beads 62 mounted on the second circuit board 61. The Fresnel lens 4 has a light collecting effect on the light emitted by the high-brightness lamp beads 62, then forms parallel light, and finally the total reflection mirror 5 reflects the light and forms a local high-brightness light spot on the surface of the workpiece to be detected. When the local high-brightness light spot needs to be adjusted, the inclination angle of the total reflection mirror 5 can be adjusted.

[0043] Optionally, the lumen output of the high-brightness lamp beads 62 is not less than 120 lm / w.

[0044] Optionally, the side of the shell 1 away from the diffusion plate 3 is provided with a mounting plate 11, the mounting plate is connected with a mounting shaft 12, the mounting shaft 12 is rotatably provided with a fixed block 13, and one end of the total reflection mirror 5 is embedded in the fixed block 13. Figure 1 As shown in the figure, the mounting plate 11 is provided with the mounting shaft 12, and the fixed block 13 can adjust the rotation angle relative to the mounting shaft 12 and can keep the current inclination angle, so that the total reflection mirror 5 is at different inclination angles.

[0045] Optionally, the mounting plate 11 has an inclined surface 111, and the end of the mounting shaft 12 is connected to the inclined surface 111, so that the inclination angle range of the total reflection mirror 5 is larger and easier to adjust, and the relative rotation angle between the fixed block 13 and the mounting shaft 12 can be reduced, thereby reducing the possibility of damage to the mounting shaft 12 or the fixed block 13.

[0046] In this embodiment, the first lamp panel 2 is perpendicular to the second lamp panel 6.

[0047] Optionally, the first lamp panel 2 and the second lamp panel 6 are attached to the shell 1, so that the shell 1 has a good heat dissipation effect and avoids damage caused by overheating of the first lamp panel 2 or the second lamp panel 6. Preferably, the shell 1, the Fresnel lens 4 and the diffusion plate 3 form a vacuum space, and the first lamp panel 2 and the second lamp panel 6 are mounted in the vacuum space. The existence of the vacuum space can effectively reduce light scattering and improve the light output effect.

[0048] Embodiment two

[0049] This embodiment discloses a visual detection device, which comprises the combined light source as described in embodiment one.

[0050] Generally, the visual detection device further comprises at least a detection camera, which is arranged on one side of the combined light source and performs photographing detection on the surface of the workpiece to be detected.

[0051] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A combined light source, characterized in that, It includes a housing (1), a first lamp plate (2) mounted on the housing (1), a diffuser plate (3) mounted on the light-emitting side of the first lamp plate (2), a Fresnel lens (4) mounted on the housing (1), a total reflection mirror (5) rotatably mounted on the housing (1), and a second lamp plate (6) mounted on the housing (1), and the tilt angle of the total reflection mirror (5) is adjustable; The light emitted from the first lamp plate (2) can pass through the diffuser plate (3) and be directed toward the workpiece to be tested. The light emitted from the second lamp plate (6) passes through the Fresnel lens (4) and is directed toward the total reflection mirror (5). The total reflection mirror (5) reflects the light toward the workpiece to be tested.

2. The combined light source according to claim 1, characterized in that, The Fresnel lens (4) and the second lamp plate (6) are both located between the first lamp plate (2) and the diffuser plate (3); The Fresnel lens (4) is located directly above the first lamp plate (2).

3. The combined light source according to claim 1, characterized in that, The first lamp board (2) includes a first circuit board (21) and an array of first lamp beads (22) mounted on the side of the first circuit board (21) near the diffuser plate (3); The first LED bead (22) is directly opposite the diffuser plate (3), and the diffuser plate (3) is parallel to the first circuit board (21).

4. The combined light source according to claim 1, characterized in that, The second lamp board (6) includes a second circuit board (61) and high-brightness LED beads (62) mounted on the second circuit board (61).

5. The combined light source according to claim 4, characterized in that, The high-brightness LED (62) has a lumen output of not less than 120 lm / w.

6. The combined light source according to claim 1, characterized in that, A mounting plate (11) is installed on the side of the housing (1) away from the diffuser plate (3). A mounting shaft (12) is connected to the mounting plate (11). A fixing block (13) is rotatably mounted on the mounting shaft (12). One end of the total reflection mirror (5) is embedded in the fixing block (13).

7. The combined light source according to claim 6, characterized in that, The mounting plate (11) has an inclined surface (111), and the end of the mounting shaft (12) extends and connects to the inclined surface (111).

8. The combined light source according to claim 1, characterized in that, The first lamp panel (2) is perpendicular to the second lamp panel (6).

9. The combined light source according to claim 1, characterized in that, Both the first lamp plate (2) and the second lamp plate (6) are attached to the housing (1).

10. A visual inspection device, characterized in that, It includes a combined light source as described in any one of claims 1 to 9.

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