A kind of surface detection device and a kind of sphere integral light source device

Abstract

This utility model relates to the field of machine vision inspection technology, and discloses a spherical integrating light source device and a surface inspection device, including a light-blocking plate, a light-emitting component, and a crescent-shaped splicing plate; a light-blocking plate is installed between two adjacent crescent-shaped splicing plates; N crescent-shaped splicing plates and N+1 light-blocking plates are combined to form a hemispherical shell structure, and adjacent crescent-shaped splicing plates are detachably connected, where N is a positive integer greater than 3; a mounting cavity is formed between two adjacent light-blocking plates, and the light-emitting component is installed in each mounting cavity and fixedly connected to the light-blocking plate; the concave surface of the crescent-shaped splicing plate is a concave diffuse reflection surface, and the light emitted by the light-emitting component is reflected by the concave surface and emitted from the bottom opening of the hemispherical shell structure. The spherical integrating light source device and surface inspection device of this utility model have low production cost and are easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection technology, and in particular to a spherical integrating light source device and a surface inspection device. Background Technology

[0002] The sphere integrating light source is one of the most classic lighting sources, capable of creating a uniform light intensity distribution. It is commonly used in machine vision inspection. When in use, the sphere integrating light source is positioned above the object being photographed, providing uniform illumination to the workpiece.

[0003] Chinese invention patent application CN202311841119.7 discloses a spherical integrating light source device, which improves the brightness of the light source, facilitates product imaging, and enhances detection accuracy. This spherical integrating light source device has multiple PCBs mounted on a hemispherical fixture, with one LED on each PCB. If one LED fails, the top cover must be completely disassembled to replace the PCB. Furthermore, deformation of the fixture or top cover significantly affects the actual light output, and the shape of the fixture or top cover is difficult to repair, generally requiring the replacement of the entire spherical integrating light source device. This type of spherical integrating light source device is difficult or even impossible to maintain, increasing production costs.

[0004] Therefore, it is necessary to design an easy-to-maintain spherical integrating light source device and a surface inspection device.

[0005] 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

[0006] This invention provides a spherical integrating light source device and a surface inspection device, which are easy to maintain and can help reduce production costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A spherical integrating light source device includes a light-blocking plate, a light-emitting component, and a crescent-shaped splicing plate;

[0009] A light-blocking plate is installed between two adjacent crescent-shaped splicing panels; N crescent-shaped splicing panels and N+1 light-blocking plates are combined to form a hemispherical shell structure, and the two adjacent crescent-shaped splicing panels are detachably connected, where N is a positive integer greater than 3;

[0010] An installation cavity is formed between two adjacent light-blocking plates, and a light-emitting component is installed in each installation cavity, and the light-emitting component is fixedly connected to the light-blocking plate;

[0011] The concave surface of the crescent-shaped splicing plate is a concave diffuse reflection surface, and the light emitted by the light-emitting component is reflected by the concave surface and emitted from the bottom opening of the hemispherical shell structure.

[0012] Optionally, two adjacent crescent-shaped splicing panels may be clamped together with one of the light-blocking panels;

[0013] The crescent-shaped splicing panel is used to closely adhere to the side of the light-blocking plate, which is a flat surface.

[0014] Optionally, the spherical integrating light source device also includes a hemispherical diffuser shell;

[0015] The end face of the light-shielding plate is attached to the diffuser shell.

[0016] Optionally, the spherical integrating light source device further includes an annular support ring, which supports the hemispherical shell structure and the diffuse shell;

[0017] The annular support ring has a first annular positioning groove and a second annular positioning groove. The bottom of the hemispherical shell structure is engaged in the first annular positioning groove, and the bottom of the diffuse shell is engaged in the second annular positioning groove.

[0018] Optionally, the depth of the second annular positioning groove is greater than that of the first annular positioning groove, and one of the light-blocking plates is attached to the bottom wall of the first annular positioning groove.

[0019] Optionally, the light-emitting component includes a circuit board mounted on the light-blocking plate, wherein a row of LED beads is spaced apart on the circuit board, and the row of LED beads is arranged at intervals along an arc.

[0020] The closer to the end of the crescent-shaped splicing plate, the greater the distance between two adjacent LED beads.

[0021] Optionally, the crescent-shaped splicing panel has strip-shaped connecting protrusions on both opposite sides.

[0022] The strip-shaped connecting protrusion is provided with a connecting through hole, and the light-blocking plate is provided with a through hole corresponding to the connecting through hole.

[0023] Optionally, one of the crescent-shaped splicing plates is provided with a detection hole, the center line of which passes through the center of the hemispherical shell structure.

[0024] Optionally, the light-shielding plate is a black insulating heat dissipation plate.

[0025] A surface inspection device includes a spherical integrating light source device as described in any of the preceding claims.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The spherical integrating light source device and surface detection device provided by this utility model have light-blocking plates that separate different light-emitting components to form different light-emitting areas, and the two adjacent crescent-shaped splicing plates are detachably connected. Therefore, after a crescent-shaped splicing plate is deformed, the deformed crescent-shaped splicing plate can be directly removed and replaced with a new crescent-shaped splicing plate without replacing the entire spherical integrating light source device, which effectively reduces production costs.

[0028] 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

[0029] 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.

[0030] Figure 1 This is a top view schematic diagram of the spherical integrating light source device provided in this embodiment of the utility model;

[0031] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure of the integrator light source device in the middle sphere;

[0032] Figure 3 yes Figure 1 Schematic diagram of the BB cross-sectional structure of the integrator light source device in the middle sphere;

[0033] Figure 4 This is a bottom view of the spherical integrating light source device provided in this embodiment of the utility model.

[0034] Reference numerals: 1. Light-blocking plate; 101. Mounting cavity; 2. Light-emitting component; 21. Circuit board; 22. Lamp bead; 3. Crescent-shaped splicing plate; 301. Detection hole; 31. Strip-shaped connecting protrusion; 32. Through hole; 4. Diffusing shell; 5. Annular support ring; 51. First annular positioning groove; 52. Second annular positioning groove. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Example 1

[0045] In view of the shortcomings of existing sphere integrating light source devices, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a device that could overcome the deficiencies of the existing technology and make the sphere integrating light source device more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0046] Please refer to Figures 1 to 4This utility model provides a spherical integrating light source device, including a light-blocking plate 1, a light-emitting component 2, and a crescent-shaped splicing plate 3. A light-blocking plate 1 is installed between two adjacent crescent-shaped splicing plates 3. N crescent-shaped splicing plates 3 and N+1 light-blocking plates 1 are combined to form a hemispherical shell structure, which can support the light-blocking plate 1 and the light-emitting component 2. N is a positive integer greater than 3. In this embodiment, the two adjacent crescent-shaped splicing plates 3 are detachably connected. In practical applications, people can choose buckles or connectors to achieve detachable connection according to their own needs. This utility model does not limit this. An installation cavity 101 is formed between two adjacent light-blocking plates 1. A light-emitting component 2 is installed in each installation cavity 101, and the light-emitting component 2 is fixedly connected to the light-blocking plate 1. The concave surface of the crescent-shaped splicing plate 3 is a concave diffuse reflection surface. The light emitted by the light-emitting component 2 is reflected by the concave surface and emitted from the bottom opening of the hemispherical shell structure.

[0047] In this embodiment, the light-emitting component 2 is installed between two adjacent light-blocking plates 1 and is fixedly connected to the light-emitting component 2. Therefore, it is not necessary to disassemble and fix the light-emitting component 2 again during the replacement of the crescent-shaped splicing plate 3, making maintenance simpler. The spherical integrating light source device in this embodiment can help reduce production costs.

[0048] It should also be noted that the light-shielding plate 1 and the mounting cavity 101 are arranged at intervals. When the sphere integrating light source device emits light, bright stripes and dark stripes will be formed. The light-shielding plate 1 constitutes the dark stripe. The ends of multiple dark stripes are close to each other and the middle is separated from each other, so that when the camera detects workpieces with curved surfaces and certain reflective effects, the detection accuracy can be higher and the surface defects of the workpieces can be detected more easily.

[0049] Optionally, two adjacent crescent-shaped splicing plates 3 clamp a light-blocking plate 1; the side of the crescent-shaped splicing plate 3 that is in close contact with the light-blocking plate 1 is flat. The light-blocking plate 1 is clamped and positioned by the two crescent-shaped splicing plates 3, and the installation position of the light-blocking plate 1 is fixed and not easy to shift, which can effectively maintain the stability of the light output effect.

[0050] Optionally, the spherical integrating light source device also includes a hemispherical diffuser shell 4; the bottom end face of the light-blocking plate 1 is attached to the diffuser shell 4. The diffuser shell 4 can play a role in homogenizing the light. In addition, since the bottom of the light-blocking plate 1 is attached to the diffuser shell 4, dark stripes can still be formed at the position where the light-blocking plate 1 is attached to the diffuser shell 4, so as to improve the detection effect of Bluetooth headset products.

[0051] Optionally, the spherical integrating light source device further includes an annular support ring 5, which supports the hemispherical shell structure and the diffuse shell 4; the annular support ring 5 has a first annular positioning groove 51 and a second annular positioning groove 52 formed on it, the bottom of the hemispherical shell structure is inserted into the first annular positioning groove 51, and the bottom of the diffuse shell 4 is inserted into the second annular positioning groove 52.

[0052] The annular support ring 5 can support the hemispherical shell structure and the diffuse shell 4, and can simultaneously position the hemispherical shell structure and the diffuse shell 4, reducing the assembly difficulty of the spherical integrating light source device.

[0053] Optionally, the depth of the second annular positioning groove 52 is greater than that of the first annular positioning groove 51, and one of the light-shielding plates 1 is attached to the bottom wall of the first annular positioning groove 51. In this embodiment, the depth of the second annular positioning groove 52 is greater than that of the first annular positioning groove 51, thereby enabling differentiated installation of the hemispherical shell structure and the diffuser shell 4, further reducing the possibility of installation errors.

[0054] Optionally, the light-emitting component 2 includes a circuit board 21 mounted on the light-blocking plate 1. A row of LED beads 22 is installed on the circuit board 21 at intervals. The row of LED beads 22 is arranged at intervals along an arc. The closer to the end of the crescent-shaped splicing plate 3, the greater the distance between two adjacent LED beads 22, so that the light emission in the entire mounting cavity 101 is more uniform and avoids the situation of local high brightness and local dimness.

[0055] Optionally, each of the two opposite edges of the crescent-shaped splicing panel 3 is provided with a strip-shaped connecting protrusion 31; the strip-shaped connecting protrusion 31 is provided with a connecting through hole, and the light-blocking plate 1 is provided with a through hole 32 corresponding to the connecting through hole. Figure 3 As shown, two strip-shaped connecting protrusions 31 approach each other and are then connected and clamped together by a connector to form a light-blocking plate 1.

[0056] Optionally, one of the crescent-shaped splicing plates 3 is provided with a detection hole 301, the center line of which passes through the center of the hemispherical shell structure. A camera takes pictures of the workpiece through the detection hole 301. Preferably, two detection holes 301 can be provided, and the included angle between the center lines of the two detection holes 301 is 30°, so as to better detect the condition of the opposite two side surfaces of the workpiece.

[0057] Optionally, the light-blocking plate 1 is a black insulating heat dissipation plate. The light-blocking plate 1 not only serves to block and absorb light, but also improves heat dissipation by transferring heat to the crescent-shaped splicing plate 3, thus preventing overheating.

[0058] Example 2

[0059] This embodiment discloses a surface detection device, including a spherical integrating light source device as described in any of the preceding embodiments.

[0060] 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 spherical integrating light source device, characterized in that, It includes a light-blocking plate (1), a light-emitting component (2), and a crescent-shaped splicing plate (3); A light-blocking plate (1) is installed between two adjacent crescent-shaped splicing plates (3); N crescent-shaped splicing plates (3) and N+1 light-blocking plates (1) are combined to form a hemispherical shell structure, and two adjacent crescent-shaped splicing plates (3) are detachably connected, where N is a positive integer greater than 3; An installation cavity (101) is formed between two adjacent light-blocking plates (1), and the light-emitting component (2) is installed in each installation cavity (101), and the light-emitting component (2) is fixedly connected to the light-blocking plate (1); The concave surface of the crescent-shaped splicing plate (3) is a concave diffuse reflection surface, and the light emitted by the light-emitting component (2) is reflected by the concave surface and emitted from the bottom opening of the hemispherical shell structure.

2. The spherical integrating light source device according to claim 1, characterized in that, Two adjacent crescent-shaped splicing panels (3) clamp one light-blocking plate (1); The crescent-shaped splicing plate (3) is used to closely adhere to the side of the light-blocking plate (1), which is a flat surface.

3. The spherical integrating light source device according to claim 1, characterized in that, It also includes a hemispherical diffuse shell (4); The end face of the light shield (1) is attached to the diffuser shell (4).

4. The spherical integrating light source device according to claim 3, characterized in that, It also includes an annular support ring (5), which supports the hemispherical shell structure and the diffuse shell (4); The annular support ring (5) has a first annular positioning groove (51) and a second annular positioning groove (52). The bottom of the hemispherical shell structure is inserted into the first annular positioning groove (51), and the bottom of the diffuse shell (4) is inserted into the second annular positioning groove (52).

5. The spherical integrating light source device according to claim 4, characterized in that, The second annular positioning groove (52) is deeper than the first annular positioning groove (51), and one of the light-blocking plates (1) is attached to the bottom wall of the first annular positioning groove (51).

6. The spherical integrating light source device according to claim 1, characterized in that, The light-emitting component (2) includes a circuit board (21) mounted on the light-blocking plate (1), and a row of LED beads (22) are spaced apart on the circuit board (21), with the row of LED beads (22) arranged at intervals along an arc. The closer to the end of the crescent-shaped splicing plate (3), the greater the distance between two adjacent LED beads (22).

7. The spherical integrating light source device according to claim 1, characterized in that, The crescent-shaped splicing plate (3) has strip-shaped connecting protrusions (31) on both opposite sides; The strip-shaped connecting protrusion (31) is provided with a connecting through hole, and the light-blocking plate (1) is provided with a through hole (32) corresponding to the connecting through hole.

8. The spherical integrating light source device according to claim 1, characterized in that, One of the crescent-shaped splicing plates (3) is provided with a detection hole (301), the center line of which passes through the center of the hemispherical shell structure.

9. The spherical integrating light source device according to claim 1, characterized in that, The light-blocking plate (1) is a black insulating heat dissipation plate.

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

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