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

Abstract

The utility model relates to machine vision detection technical field discloses a kind of sphere integral light source device and surface defect detection device, including hemispherical shell structure and light-emitting lamp plate, the hemispherical shell structure is combined by N piece crescent splicing plate and N+1 piece light barrier plate, two adjacent The crescent splicing plate clamps a light barrier plate, N is greater than 3 positive integer;Formed with light-emitting cavity between two adjacent The light barrier plate, the light barrier plate is close to the side of the light-emitting cavity and is equipped with accommodating recess, and the inner wall surface of the crescent splicing plate close to the light-emitting cavity is diffuse reflection surface;The light-emitting lamp plate is installed in the accommodating recess, and the light-emitting lamp plate does not protrude to the side plate surface of the light barrier plate.The sphere integral light source device and surface defect detection device of the utility model reduce the complexity of installation, and can also guarantee light-emitting effect well.

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 defect detection device. Background Technology

[0002] The sphere integral light source is one of the most classic lighting sources and is widely used in the field of machine vision inspection technology.

[0003] Current spherical integrating light sources generally consist of a hemispherical support housing and multiple smaller light-emitting panels distributed along the surface of the hemispherical support housing. LEDs are mounted on the light-emitting panels, extending into through-holes in the hemispherical support housing and emitting light through these holes to uniformly illuminate the workpiece on one side of the bottom. Existing spherical integrating light sources require each light-emitting panel to be fixed individually, and the number of light-emitting panels typically exceeds 30, making installation complex and prone to misalignment of the LEDs with the through-holes.

[0004] In view of this, it is necessary to design a spherical integrating light source device and a surface defect detection device that can reduce the complexity of installation while ensuring the light output effect.

[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 defect detection device, which can reduce the complexity of installation while ensuring good light output effect.

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

[0008] A spherical integrating light source device includes a hemispherical shell structure and a light-emitting plate. The hemispherical shell structure is composed of N crescent-shaped splicing plates and N+1 light-blocking plates. Two adjacent crescent-shaped splicing plates clamp one light-blocking plate. N is a positive integer greater than 3.

[0009] A light-emitting cavity is formed between two adjacent light-blocking plates. A receiving groove is provided on the side of the light-blocking plate near the light-emitting cavity, and the inner wall surface of the crescent-shaped splicing plate near the light-emitting cavity is a diffuse reflection surface.

[0010] The light-emitting plate is installed in the receiving groove, and the light-emitting plate does not protrude from the side surface of the light-blocking plate.

[0011] Optionally, the receiving groove is a trapezoidal groove;

[0012] The bottom wall of the receiving groove and the side wall of the receiving groove have a smooth transition, and the side wall of the receiving groove and one side surface of the light-blocking plate have a smooth transition.

[0013] Optionally, the surface of the light-blocking plate is a diffuse reflective surface.

[0014] Optionally, the central symmetry plane of each of the light-blocking plates includes a predetermined central axis passing through the center of the hemispherical shell structure, the predetermined central axis being parallel to the horizontal plane.

[0015] Optionally, the thickness of the light-emitting lamp plate at one end near the crescent-shaped splicing plate is greater than the thickness of the light-emitting lamp plate at the other end away from the crescent-shaped splicing plate.

[0016] Optionally, in the hemispherical shell structure, one of the crescent-shaped splicing plates has an image detection hole;

[0017] The centerline of the image detection aperture passes through the center of the hemispherical shell structure.

[0018] Optionally, the spherical integrating light source device also includes an annular support ring;

[0019] The hemispherical shell structure is mounted on the annular support ring, and the center line of the annular support ring passes through the center of the hemispherical shell structure.

[0020] Optionally, the spherical integrating light source device further includes a hemispherical diffuser shell, which is mounted on the annular support ring, and the top surface of the diffuser shell abuts against the light-blocking plate.

[0021] Optionally, the number of crescent-shaped splicing panels is odd, and the topmost crescent-shaped splicing panel has an image detection hole.

[0022] A surface defect detection device includes a spherical integrating light source device as described in any of the preceding claims.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The spherical integrating light source device and surface defect detection device provided by this utility model are composed of a hemispherical shell structure made up of multiple crescent-shaped splicing plates and multiple light-shielding plates. The light-emitting lamp plate is supported and installed by the light-shielding plates. The light-emitting lamp plate does not need to be installed on the arc surface but can be directly installed on the side of the light-shielding plate, which simplifies the installation and reduces the number of light-emitting lamp plates, thus significantly reducing the complexity of the installation. In addition, the light-emitting lamp plate is provided with a receiving groove to accommodate the light-emitting lamp plate. The light-emitting lamp plate does not protrude from the side of the light-shielding plate, and the light-emitting lamp plate has a smaller blocking effect on the light reflected from the inner wall of the crescent-shaped splicing plate, allowing more light to pass through the light-emitting cavity and shine on the workpiece at the bottom, which can well ensure the light emission effect.

[0025] 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

[0026] 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.

[0027] Figure 1 This is a top view schematic diagram of the spherical integrating light source device provided in this embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the integrator light source device along line AA;

[0029] Figure 3 yes Figure 2 An enlarged view of position A in the middle;

[0030] Figure 4 This is a schematic diagram of another installation structure of the light-blocking plate provided in this embodiment of the utility model.

[0031] Reference numerals: 1. Hemispherical shell structure; 101. Light-emitting cavity; 11. Crescent-shaped splicing plate; 12. Light-blocking plate; 121. Receiving groove; 2. Light-emitting plate; 3. Annular support ring; 4. Diffusing shell; 100. Setting the central axis; 200. Image detection hole. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Example 1

[0042] 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.

[0043] Please refer to Figures 1 to 3 This utility model provides a spherical integrating light source device, including a hemispherical shell structure 1 and a light-emitting plate 2. The hemispherical shell structure 1 is composed of N crescent-shaped splicing plates 11 and N+1 light-blocking plates 12, as shown below. Figure 1 and Figure 2 As shown, two adjacent crescent-shaped splicing panels 11 clamp a light-blocking plate 12, and the two adjacent crescent-shaped splicing panels 11 are detachably connected. Similarly, a crescent-shaped splicing panel 11 is provided between two adjacent light-blocking plates 12. N is a positive integer greater than 3; in this embodiment, N = 9.

[0044] A light-emitting cavity 101 is formed between two adjacent light-blocking plates 12. A receiving groove 121 is formed on the side of the light-blocking plate 12 near the light-emitting cavity 101, and the inner wall surface of the crescent-shaped splicing plate 11 near the light-emitting cavity 101 is a diffuse reflective surface. The light-emitting lamp plate 2 is installed in the receiving groove 121, and the light-emitting lamp plate 2 does not protrude from the side surface of the light-blocking plate 12. The light emitted by the light-emitting lamp plate 2 is diffusely reflected by the diffuse reflective surface and then emitted from the light-emitting end of the light-emitting cavity 101, thereby illuminating the workpiece. The diffuse reflective surface softens the light emitted by the light-emitting lamp plate 2, making the illumination effect more uniform.

[0045] Furthermore, since the light-emitting plate 2 is installed in the receiving groove 121 and does not protrude from the side plate of the light-blocking plate 12, the light-emitting plate 2 has a smaller blocking effect on the diffused light, allowing more light to pass through the light-emitting cavity 100 and be directed to the workpiece at the bottom, which can well ensure the light-emitting effect, that is, ensure the light intensity and light uniformity.

[0046] Optionally, the receiving groove 121 is a trapezoidal groove; the bottom wall of the receiving groove 121 and the side wall of the receiving groove 121 are smoothly transitioned, and the side wall of the receiving groove 121 and one side of the light-blocking plate 12 are smoothly transitioned, thereby avoiding the production of local high bright spots and improving the uniformity of light output.

[0047] Optionally, the surface of the light-blocking plate 12 is a diffuse reflective surface, which can further diffuse the light and thus further improve the uniformity of light output.

[0048] Optionally, the central symmetry plane of each light-blocking plate 12 includes a set central axis 100 passing through the center of the hemispherical shell structure 1, and the set central axis 100 is parallel to the horizontal plane. Therefore, a crescent-shaped light-emitting area is formed between every two light-blocking plates 12. Generally, the light-emitting lamp plate 2 in each light-emitting area can be opened and closed individually, thereby forming different light-emitting effects.

[0049] Optionally, such as Figure 4 As shown, the thickness of the light-emitting panel 2 at the end near the crescent-shaped splicing plate 11 is greater than the thickness of the other end of the light-emitting panel 2 away from the crescent-shaped splicing plate 11. This structure allows more light emitted from the light-emitting panel 2 to reach the inner wall surface of the crescent-shaped splicing plate 11, while also reducing the light-blocking effect at the tail end of the crescent-shaped splicing plate 11 and increasing the light intensity.

[0050] Optionally, in the hemispherical shell structure 1, a crescent-shaped splicing plate 11 has an image detection hole 200; the center line of the image detection hole 200 passes through the center of the hemispherical shell structure 1. The camera takes pictures of the workpiece for inspection through the image detection hole 200.

[0051] Optionally, the spherical integrating light source device also includes an annular support ring 3, which mainly serves a supporting function; the hemispherical shell structure 1 is mounted on the annular support ring 3, and the center line of the annular support ring 3 passes through the center of the hemispherical shell structure 1.

[0052] Optionally, the spherical integrating light source device also includes a hemispherical diffuser shell 4, which is mounted on the annular support ring 3, and the top surface of the diffuser shell 4 abuts against the light-blocking plate 12. The diffuser shell 4 can further improve the diffusion effect and further improve the uniformity of light output.

[0053] Optionally, the number of crescent-shaped splicing plates 11 is odd, and the top crescent-shaped splicing plate 11 has an image detection hole 200, which can be located directly above the workpiece.

[0054] Example 2

[0055] This embodiment discloses a surface defect detection device, including a spherical integrating light source device as described in Embodiment 1.

[0056] 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 hemispherical shell structure (1) and a light-emitting plate (2). The hemispherical shell structure (1) is composed of N crescent-shaped splicing plates (11) and N+1 light-blocking plates (12). Two adjacent crescent-shaped splicing plates (11) clamp one light-blocking plate (12). N is a positive integer greater than 3. A light-emitting cavity (101) is formed between two adjacent light-blocking plates (12). A receiving groove (121) is provided on the side of the light-emitting plate (12) near the light-emitting cavity (101), and the inner wall surface of the crescent-shaped splicing plate (11) near the light-emitting cavity (101) is a diffuse reflection surface. The light-emitting plate (2) is installed in the receiving groove (121), and the light-emitting plate (2) does not protrude from the side plate surface of the light-blocking plate (12).

2. The spherical integrating light source device according to claim 1, characterized in that, The receiving groove (121) is a trapezoidal groove; The bottom wall of the receiving groove (121) and the side wall of the receiving groove (121) are smoothly transitioned, and the side wall of the receiving groove (121) and one side of the light shield (12) are smoothly transitioned.

3. The spherical integrating light source device according to claim 1, characterized in that, The surface of the light-blocking plate (12) is a diffuse reflective surface.

4. The spherical integrating light source device according to claim 1, characterized in that, Each of the light-blocking plates (12) has a central symmetry plane containing a set central axis (100) passing through the center of the hemispherical shell structure (1), the set central axis (100) being parallel to the horizontal plane.

5. The spherical integrating light source device according to claim 1, characterized in that, The thickness of the light-emitting lamp plate (2) at one end near the crescent-shaped splicing plate (11) is greater than the thickness of the light-emitting lamp plate (2) at the other end away from the crescent-shaped splicing plate (11).

6. The spherical integrating light source device according to claim 1, characterized in that, In the hemispherical shell structure (1), one of the crescent-shaped splicing plates (11) is provided with an image detection hole (200); The centerline of the image detection aperture (200) passes through the center of the hemispherical shell structure (1).

7. The spherical integrating light source device according to claim 6, characterized in that, It also includes a ring-shaped support ring (3); The hemispherical shell structure (1) is mounted on the annular support ring (3), and the center line of the annular support ring (3) passes through the center of the hemispherical shell structure (1).

8. The spherical integrating light source device according to claim 7, characterized in that, It also includes a hemispherical diffuser shell (4), which is mounted on the annular support ring (3), and the top surface of the diffuser shell (4) abuts against the light-blocking plate (12).

9. The spherical integrating light source device according to claim 6, characterized in that, The number of crescent-shaped splicing plates (11) is odd, and the topmost crescent-shaped splicing plate (11) has an image detection hole (200).

10. A surface defect detection 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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