A combined light source and detection device

Abstract

The utility model relates to light source structure technical field discloses a kind of combination light source and detection device, comprising: coaxial light source, with for the first light hole of measured workpiece;Supplementary light source, install on the coaxial light source, including the annular light-emitting lamp plate, annular diffusion plate and annular diffusion film sequentially arranged along the axis direction of the first light hole;The annular light-emitting lamp plate, the annular diffusion plate and the annular diffusion film all surround the first light hole, the light ray of the annular light-emitting lamp plate emission can sequentially pass through the annular diffusion plate and the annular diffusion film and be shot to measured workpiece, and the annular diffusion film is attached in the annular diffusion plate.The combination light source and detection device of the utility model improve the detection precision of measured workpiece.

Description

Technical Field

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

[0002] In existing coaxial light sources, the light emitted from the light-emitting component passes through a diffuser plate and then onto a beam splitter, which in turn directs the light onto the workpiece under test, forming a light spot on the workpiece surface. When this type of coaxial light source illuminates the workpiece, the brightness attenuation between the light spot and the unilluminated area is relatively rapid. This can cause interference when the inspection camera detects surface defects, affecting the actual inspection results.

[0003] Therefore, it is necessary to design a combined light source and detection device that can help improve the detection accuracy of the workpiece under test.

[0004] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0005] This invention provides a combined light source and detection device, which can help improve the detection accuracy of the workpiece under test.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A combined light source, comprising:

[0008] A coaxial light source having a first light-emitting aperture for facing the workpiece under test;

[0009] The supplementary light source, installed on the coaxial light source, includes an annular light-emitting plate, an annular diffuser plate, and an annular diffuser film arranged sequentially along the axial direction of the first light-emitting hole;

[0010] The annular light-emitting plate, the annular diffuser plate, and the annular diffuser film all surround the first light-emitting hole. The light emitted from the annular light-emitting plate can pass through the annular diffuser plate and the annular diffuser film in sequence and be directed toward the workpiece to be tested. The annular diffuser film is attached to the annular diffuser plate.

[0011] Optionally, the supplementary light source also includes a protective cover;

[0012] The protective cover is fixedly connected to the coaxial light source to form an installation space, and the supplementary light source is located in the installation space;

[0013] The protective cover is provided with a second light-emitting hole coaxial with the first light-emitting hole, and a dustproof transparent glass that is attached to the annular diffusion film is also installed in the installation space, and the dustproof transparent glass covers the second light-emitting hole.

[0014] Optionally, the coaxial light source includes a housing body;

[0015] A C-shaped air-cooling channel groove is provided on the outer side of the outer shell body. The C-shaped air-cooling channel groove surrounds the first light-emitting hole. One side of the annular light-emitting lamp plate is attached to the outer shell body, and the opening of the C-shaped air-cooling channel groove is directly opposite the annular light-emitting lamp plate.

[0016] Optionally, the annular light-emitting plate covers the opening of the C-shaped air-cooling channel groove;

[0017] The outer shell body is also provided with an air-cooling inlet hole that connects to one end of the C-shaped air-cooling channel groove and an air-cooling outlet hole that connects to the other end of the C-shaped air-cooling channel groove.

[0018] Optionally, the coaxial light source further includes a beam splitter prism and a coaxial light-emitting plate installed in the housing body;

[0019] The light emitted from the coaxial light-emitting plate can pass through the beam splitter and exit from the first light-emitting hole.

[0020] Optionally, the coaxial light source further includes a coaxial light diffuser plate installed between the coaxial light-emitting plate and the beam splitter.

[0021] Optionally, the outer casing body is further provided with a detection hole, which faces the beam splitter prism and is perpendicular to the first light-emitting hole.

[0022] Optionally, a heat sink extending into the C-shaped air-cooling channel groove is connected to the annular light-emitting plate.

[0023] Optionally, the annular diffusion film is adhered to the annular diffusion plate.

[0024] A detection device includes a detection camera and a combined light source as described in any one of the above.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The combined light source and detection device provided by this utility model, by installing a supplementary light source on a coaxial light source, and the supplementary light source including a circular annular light-emitting plate, a circular annular diffuser plate and a circular annular diffuser film, allows the light emitted from the circular annular light-emitting plate to pass through the circular annular diffuser plate and the circular annular diffuser film in sequence and be directed toward the workpiece to be tested. This results in more uniform illumination of the surface of the workpiece and less brightness attenuation between the main illuminated area of ​​the workpiece and other surfaces, effectively reducing interference and making subsequent detection more accurate. It should also be noted that the circular light-emitting plate, through the double diffusion of the circular annular diffuser plate and the circular annular diffuser film, provides more uniform illumination, which is beneficial to improving detection accuracy.

[0027] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the combined light source provided in an embodiment of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the combined light source provided in an embodiment of the present invention;

[0031] Figure 3 This is a three-dimensional structural diagram of the outer shell body provided in an embodiment of the present utility model;

[0032] Figure 4 This is a three-dimensional structural diagram of the protective cover provided in this embodiment of the utility model;

[0033] Figure 5 This is a schematic diagram of the installation structure of the detection device provided in this embodiment of the utility model;

[0034] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure of the combined light source along line AA.

[0035] Reference numerals: 1. Coaxial light source; 101. First light-emitting aperture; 102. External detection aperture; 11. Main body of the outer shell; 111. C-shaped air-cooled flow channel; 12. Beam splitter prism; 13. Coaxial light-emitting lamp plate; 14. Coaxial light diffuser plate; 2. Supplementary light source; 21. Circular light-emitting lamp plate; 22. Circular diffuser plate; 23. Circular diffuser film; 24. Protective cover; 241. Second light-emitting aperture; 25. Dustproof transparent glass; 200. Detection camera. Detailed Implementation

[0036] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0037] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0038] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0039] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0040] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0041] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0042] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0043] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0044] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0045] Example 1

[0046] In view of the aforementioned deficiencies in existing combined light sources, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a solution that overcomes the shortcomings of existing technologies and makes the combined light source more practical. Through continuous research and design, and after repeated prototype production and improvements, this utility model, which possesses genuine practical value, has finally been created.

[0047] Please refer to Figures 1 to 6 This utility model embodiment provides a combined light source, including: a coaxial light source 1 having a first light-emitting hole 101 for facing the workpiece to be measured; and a supplementary light source 2, mounted on the coaxial light source 1, including an annular light-emitting plate 21, an annular diffuser plate 22, and an annular diffuser film 23 arranged sequentially along the axial direction of the first light-emitting hole 101. In this embodiment, light is emitted towards the workpiece to be measured through the coaxial light source 1, and supplementary light source 2 emits light to provide supplementary illumination.

[0048] The annular light-emitting plate 21, the annular diffuser plate 22, and the annular diffuser film 23 all surround the first light-emitting hole 101. The light emitted from the annular light-emitting plate 21 can pass through the annular diffuser plate 22 and the annular diffuser film 23 in sequence and be directed toward the workpiece to be measured. The annular diffuser film 23 is attached to the annular diffuser plate 22.

[0049] In this embodiment, the combined light source, by installing a supplementary light source 2 on the coaxial light source 1, includes a circular annular light-emitting plate 21, a circular annular diffuser plate 22, and a circular annular diffuser film 23. The light emitted from the circular annular light-emitting plate 21 passes sequentially through the circular annular diffuser plate 22 and the circular annular diffuser film 23 and is directed towards the workpiece under test. This results in more uniform illumination of the workpiece surface and a smaller brightness attenuation rate between the main illuminated area and other surfaces, effectively reducing interference and improving subsequent detection accuracy. Furthermore, the light emitted from the circular annular light-emitting plate 21 undergoes double-layer diffusion through the circular annular diffuser plate 22 and the circular annular diffuser film 23, resulting in more uniform illumination, which also significantly improves detection accuracy. Additionally, the light from the circular annular light-emitting plate 21 also provides supplementary illumination to the main illuminated area.

[0050] Optionally, the supplementary light source 2 also includes a protective cover 24; the protective cover 24 is fixedly connected to the coaxial light source 1 to form an installation space, in which the supplementary light source 2 is located; the protective cover 24 is provided with a second light-emitting hole 241 coaxial with the first light-emitting hole 101, and a dustproof transparent glass 25 fitted to the annular diffusion film 23 is also installed in the installation space, covering the second light-emitting hole 241. In this embodiment, the protective cover 24 and the dustproof transparent glass 25 form a sealed and dustproof installation space, thereby preventing dust from adhering to the annular diffusion film 23 and the annular diffusion plate 22. In addition, the dustproof transparent glass 25 can also prevent dust from entering the interior of the coaxial light source 1 from the first light-emitting hole 101.

[0051] Optionally, the coaxial light source 1 includes a housing body 11; a C-shaped air-cooled channel groove 111 is provided on the outer side of the housing body 11, the C-shaped air-cooled channel groove 111 surrounds the first light-emitting hole 101, and one side of the annular light-emitting lamp plate 21 is attached to the housing body 11, and the opening of the C-shaped air-cooled channel groove 111 faces the annular light-emitting lamp plate 21. In this embodiment, by providing the C-shaped air-cooled channel groove 111, a local area of ​​the annular light-emitting lamp plate 21 is cooled, thereby avoiding the annular light-emitting lamp plate 21 from overheating.

[0052] The installation space is also fitted with dustproof transparent glass that is attached to the annular diffusion membrane.

[0053] Optionally, the annular light-emitting plate 21 covers the opening of the C-shaped air-cooled channel groove 111; the outer shell body 11 is also provided with an air-cooled inlet hole communicating with one end of the C-shaped air-cooled channel groove 111 and an air-cooled outlet hole communicating with the other end of the C-shaped air-cooled channel groove 111. Generally, low-temperature gas is introduced into the air-cooled inlet hole, and the low-temperature gas exchanges heat with the annular light-emitting plate 21 and is heated up. The heated low-temperature gas is discharged along the air-cooled outlet hole.

[0054] Optionally, the coaxial light source 1 also includes a beam splitter 12 and a coaxial light-emitting plate 13 installed in the housing body 11; the light emitted from the coaxial light-emitting plate 13 can pass through the beam splitter 12 and be emitted from the first light-emitting hole 101.

[0055] Optionally, the coaxial light source 1 also includes a coaxial light diffuser plate 14 installed between the coaxial light-emitting plate 13 and the beam splitter 12. The coaxial light diffuser plate 14 can effectively improve the uniformity of light output.

[0056] Optionally, the outer casing 11 is further provided with a detection hole 102, which faces the beam splitter 12 and is perpendicular to the first light-emitting hole 101. The detection camera 200 takes pictures of the workpiece under test through the first light-emitting hole 101. It should be noted that the image of the workpiece under test is reflected into the detection camera 200 by the beam splitter 12.

[0057] Optionally, a heat sink extending into the C-shaped air-cooling channel groove 111 is connected to the annular light-emitting plate 21. In this embodiment, the heat sink is installed on the annular light-emitting plate 21, which can improve the heat conduction efficiency and enhance the cooling effect on the annular light-emitting plate 21. The heat sink is made of a material with good thermal conductivity, such as copper or silver. One end of the heat sink is connected to the annular light-emitting plate 21, and the other end extends into the C-shaped air-cooling channel groove 111.

[0058] Optionally, the annular diffusion film 23 is attached to the annular diffusion plate 22.

[0059] Example 2

[0060] A detection device includes a detection camera 200 and a combined light source as described in any one of the embodiments.

[0061] 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, include: A coaxial light source (1) has a first light-emitting aperture (101) for facing the workpiece to be measured; The supplementary light source (2) is installed on the coaxial light source (1) and includes an annular light-emitting plate (21), an annular diffuser plate (22) and an annular diffuser film (23) arranged sequentially along the axial direction of the first light-emitting hole (101). The annular light-emitting plate (21), the annular diffuser plate (22), and the annular diffuser film (23) all surround the first light-emitting hole (101). The light emitted from the annular light-emitting plate (21) can pass through the annular diffuser plate (22) and the annular diffuser film (23) in sequence and be directed toward the workpiece to be tested. The annular diffuser film (23) is attached to the annular diffuser plate (22).

2. The combined light source according to claim 1, characterized in that, The supplementary light source (2) also includes a protective cover (24); The protective cover (24) is fixedly connected to the coaxial light source (1) to form an installation space, and the supplementary light source (2) is located in the installation space; The protective cover (24) is provided with a second light-emitting hole (241) coaxial with the first light-emitting hole (101). A dustproof transparent glass (25) that fits the annular diffusion film (23) is also installed in the installation space, and the dustproof transparent glass (25) covers the second light-emitting hole (241).

3. The combined light source according to claim 1, characterized in that, The coaxial light source (1) includes a housing body (11); A C-shaped air-cooling channel groove (111) is provided on the outer side of the outer shell body (11). The C-shaped air-cooling channel groove (111) surrounds the first light-emitting hole (101), and one side of the annular light-emitting lamp plate (21) is attached to the outer shell body (11), and the groove opening of the C-shaped air-cooling channel groove (111) is directly opposite the annular light-emitting lamp plate (21).

4. The combined light source according to claim 3, characterized in that, The circular light-emitting plate (21) covers the opening of the C-shaped air-cooled flow channel groove (111); The outer shell body (11) is also provided with an air-cooling inlet hole that connects to one end of the C-shaped air-cooling channel groove (111) and an air-cooling outlet hole that connects to the other end of the C-shaped air-cooling channel groove (111).

5. The combined light source according to claim 3, characterized in that, The coaxial light source (1) also includes a beam splitter (12) and a coaxial light-emitting plate (13) installed in the housing body (11); The light emitted from the coaxial light-emitting plate (13) can pass through the beam splitter (12) and be emitted from the first light-emitting hole (101).

6. The combined light source according to claim 5, characterized in that, The coaxial light source (1) also includes a coaxial light diffuser plate (14) installed between the coaxial light-emitting plate (13) and the beam splitter (12).

7. The combined light source according to claim 5, characterized in that, The outer shell body (11) is also provided with a detection hole (102), which is directly opposite the beam splitter (12) and is perpendicular to the first light-emitting hole (101).

8. The combined light source according to claim 3, characterized in that, The annular light-emitting plate (21) is connected to a heat sink that extends into the C-shaped air-cooling channel groove (111).

9. The combined light source according to claim 1, characterized in that, The annular diffusion film (23) is attached to the annular diffusion plate (22).

10. A detection device, characterized in that, It includes a detection camera (200) and a combined light source as described in any one of claims 1 to 9.

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