High-uniformity annular light source device and visual inspection device
By setting first and second annular light-emitting components in the annular light source device, and utilizing an arc-shaped diffuser plate and a uniform diffuser cover, the problem of uneven illumination around the workpiece is solved, achieving better illumination effect and detection accuracy.
Patent Information
- Application Number
- CN202520202226.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Existing ring light sources provide poor illumination on the outer periphery of the workpiece during illumination, which is insufficient to meet inspection requirements.
A highly uniform annular light source device is designed, comprising a cylindrical shell, a first annular light-emitting component, and a second annular light-emitting component. The first annular light-emitting component is used to illuminate the top side of the workpiece, and the second annular light-emitting component is used to illuminate the outer periphery of the workpiece. The uniformity of light is achieved through an arc-shaped diffuser plate and a uniform diffuser cover.
The workpiece receives better illumination, improving the accuracy and effectiveness of the inspection, especially revealing surface defects on the outer periphery.
Smart Images
Figure CN223726151U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to light source structure technical field especially relates to a kind of high-uniform annular light source device and visual inspection device. BACKGROUND
[0002] Annular light source is commonly used light source in machine vision detection, is widely used in various shooting and inspection occasions.The existing annular light source is generally more uniform when illuminating the light of the top side of workpiece, but the light effect of the outer circumferential side of workpiece is poor, so it is difficult to meet the detection needs of part products.
[0003] Therefore, it is necessary to design a high-uniform annular light source device and visual inspection device to provide better light effect for workpieces.
[0004] The above information is given as background information only to assist with an understanding of the present disclosure, and does not constitute admission or recognition that any of the above information constitutes prior art with respect to the present disclosure. SUMMARY
[0005] The utility model provides a kind of high-uniform annular light source device and visual inspection device, can make workpiece obtain better light effect.
[0006] To achieve the above object, the utility model provides the following technical scheme:
[0007] A kind of high-uniform annular light source device, including cylindrical shell, first annular light emitting component and second annular light emitting component;The cylindrical shell has the detection hole for workpiece to pass through, the first annular light emitting component and the second annular light emitting component are all installed on the inner wall of the detection hole around the center line of the detection hole;
[0008] The first annular light emitting component includes first annular lamp plate and arc-shaped diffusion plate, and the second annular light emitting component includes second annular lamp plate and uniform diffusion cover body, and the second annular lamp plate is located on the light emitting side of the first annular lamp plate;
[0009] The first annular lamp plate is perpendicular to the center line of the detection hole, the arc-shaped diffusion plate is located on the light emitting side of the first annular lamp plate, the second annular lamp plate is attached to the inner wall of the cylindrical shell, and the light emitting side of the second annular lamp plate is provided with the uniform diffusion cover body.
[0010] Optionally, the first annular light emitting component further includes a support annular plate, the support annular plate is fixedly connected with the top end of the cylindrical shell, and the first annular lamp plate is installed on the bottom surface of the support annular plate.
[0011] The support annular plate has a center hole, and the center line of the center hole coincides with the center line of the detection hole.
[0012] Optionally, the support ring-shaped plate, the cylindrical shell and the arc-shaped diffusion plate form a sealed annular space, the first annular lamp plate is installed in the annular space and emits light downward.
[0013] The cylindrical shell has an annular inner wall surface for constituting a side wall of the annular space, and the annular inner wall surface is a total reflection surface.
[0014] Optionally, the uniform diffusion cover body has an annular groove, and the second annular lamp plate is located in the annular groove.
[0015] Optionally, a stepped groove is arranged on an inner wall of the cylindrical shell, and the second annular light-emitting assembly is installed in the stepped groove.
[0016] The second annular lamp plate does not protrude from the annular inner wall surface.
[0017] Optionally, one end of the arc-shaped diffusion plate is sealingly connected with the support ring-shaped plate, and the other end of the arc-shaped diffusion plate extends into the annular groove.
[0018] The other end of the arc-shaped diffusion plate is located between the first annular lamp plate and the second annular lamp plate.
[0019] Optionally, the other end of the arc-shaped diffusion plate is clamped by a groove wall of the annular groove and the uniform diffusion cover body.
[0020] Optionally, the first annular lamp plate comprises a first annular circuit board and a plurality of lamp beads installed on the first annular circuit board, and the plurality of lamp beads are arranged in a circular array around a center line of the detection hole.
[0021] Optionally, opposite ends of the uniform diffusion cover body are sealingly connected with the cylindrical shell.
[0022] A sealing installation space is formed between the uniform diffusion cover body and the cylindrical shell, and the second annular lamp plate is located in the installation space.
[0023] A visual detection device comprises the high-uniform annular light source device according to any one of the above.
[0024] Compared with the prior art, the high-uniform annular light source device has the following beneficial effects:
[0025] The high-uniform annular light source device and the visual detection device have the following beneficial effects: the first annular light-emitting assembly and the second annular light-emitting assembly are ingeniously arranged in the cylindrical shell, light emitted by the first annular lamp plate can be transmitted through the arc-shaped diffusion plate and irradiate one side of a top of a workpiece, and light emitted by the second annular lamp plate can be transmitted through the uniform diffusion cover body and irradiate a peripheral side surface of the workpiece, so that the workpiece has a better illumination effect, and the detection effect of the workpiece can be improved.
[0026] The present application has other characteristics and advantages, which will be apparent from the accompanying drawings and detailed description incorporated herein, or will be set forth in the accompanying drawings and detailed description incorporated herein, which together serve to explain the specific principles of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying 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 from these drawings without any creative effort.
[0028] Fig. 1 is a top view schematic diagram of the high-uniform annular light source device provided by the embodiments of the present application;
[0029] Fig. 2 is an A-A cross-sectional view schematic diagram of the high-uniform annular light source device provided by the embodiments of the present application.
[0030] Reference signs: 1, cylindrical shell; 101, detection hole; 102, annular inner wall surface; 110, stepped groove; 2, first annular light-emitting component; 21, first annular lamp plate; 211, first annular circuit board; 212, lamp bead; 22, arc-shaped diffusion plate; 23, supporting annular plate; 3, second annular light-emitting component; 301, annular groove; 31, second annular lamp plate; 32, uniform diffusion cover body. DETAILED DESCRIPTION
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying 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 from these drawings without any creative effort.
[0032] In this paper, the term "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 term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.
[0033] 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.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] Unless otherwise clearly indicated or implied to the contrary by context, as used herein the terms "mount", "connected", "connecting", "fixed", "set", etc., should be construed in a broad sense, and can encompass fixed connections, detachable connections, or integrally formed connections, mechanical connections, electrical connections, communication connections, direct connections, or indirect connections via intermediate media, or connections between internal parts of elements, or interactions between elements. Those skilled in the art should understand the specific meanings of the above terms in the context of the embodiments of the present application.
[0040] Embodiment One
[0041] In view of the defects of the existing annular light source, the present applicant, based on years of rich practical experience and professional knowledge in designing and manufacturing such products, and with the application of theories, actively conducts research and innovation in the hope of creating a technology that can solve the defects in the prior art, so that the high-uniform annular light source device is more practical. After continuous research, design, and repeated trial and improvement of samples, the present utility model has finally been created.
[0042] Please refer to Figs. 1-2 The embodiment of the present utility model provides a high-uniform annular light source device, which comprises a cylindrical shell 1, a first annular light-emitting component 2, and a second annular light-emitting component 3.
[0043] The cylindrical shell 1 has a detection hole 101 for a workpiece to pass through, and the first annular light-emitting component 2 and the second annular light-emitting component 3 are both mounted on the inner wall of the detection hole 101 around the center line of the detection hole 101. In this embodiment, the first annular light-emitting component 2 is located on one side of the top of the second annular light-emitting component 3, and is mainly used for illuminating one side of the top of the workpiece, while the second annular light-emitting component 3 is used for illuminating the outer periphery of the workpiece.
[0044] The first annular light-emitting component 2 comprises a first annular lamp panel 21 and an arc-shaped diffusion plate 22, and the second annular light-emitting component 3 comprises a second annular lamp panel 31 and a uniform diffusion cover body 32, with the second annular lamp panel 31 being located on the light-emitting side of the first annular lamp panel 21. The uniform diffusion cover body 32 has the effect of uniformizing the light emission, so that the light received by the outer periphery of the workpiece is more uniform, thereby better displaying the surface defects of the workpiece.
[0045] The first annular lamp panel 21 is perpendicular to the center line of the detection hole 101, the arc-shaped diffusion plate 22 is located on the light-emitting side of the first annular lamp panel 21, the second annular lamp panel 31 is attached to the inner wall of the cylindrical shell 1, and the light-emitting side of the second annular lamp panel 31 is provided with the uniform diffusion cover body 32.
[0046] For example, Fig. 2As shown, the first annular light-emitting component 2 is located on one side of the top of the second annular light-emitting component 3, the light emitted by the first annular light-emitting component 2 is uniformly irradiated on the top surface of the workpiece, and the light emitted by the second annular light-emitting component 3 can uniformly illuminate the outer periphery of the workpiece. Even if there is a part of the workpiece that is concave or convex, the detection camera can take a photograph of the workpiece from the bottom or obliquely to detect the surface defects of the workpiece. In this embodiment, the workpiece can be more comprehensively illuminated, which is beneficial to improve the accuracy of subsequent photographing detection.
[0047] Optionally, the first annular light-emitting component 2 further comprises a supporting annular plate 23, the supporting annular plate 23 is fixedly connected with the top end of the cylindrical shell 1, and the first annular lamp plate 21 is installed on the bottom surface of the supporting annular plate 23; the supporting annular plate 23 has a central hole, and the center line of the central hole coincides with the center line of the detection hole 101. In this embodiment, the first annular lamp plate 21 is attached to the bottom surface of the supporting annular plate 23, so that the heat can be better transferred to the supporting annular plate 23, and the situation that the temperature of the first annular lamp plate 21 is too high can be avoided. In addition, the first annular lamp plate 21 emits light downward, and the emitted light is transmitted to the workpiece through the arc-shaped diffusion plate 22, and the arc-shaped diffusion plate 22 can effectively homogenize the light.
[0048] Optionally, the supporting annular plate 23, the cylindrical shell 1 and the arc-shaped diffusion plate 22 form a sealed annular space, and the first annular lamp plate 21 is installed in the annular space and emits light downward; the cylindrical shell 1 has an annular inner wall surface 102 for constituting the side wall of the annular space, and the annular inner wall surface 102 is a total reflection surface.
[0049] It should be particularly pointed out that the first annular lamp plate 21 is horizontally arranged, so that part of the emitted light is projected on the annular inner wall surface 102. The annular inner wall surface 102 is a total reflection surface, which can reflect the light to the arc-shaped diffusion plate 22 and then to the workpiece through the arc-shaped diffusion plate 22, thereby effectively improving the utilization rate of the workpiece. Preferably, the first annular lamp plate 21 comprises a first annular circuit board 211 and a plurality of lamp beads 212 installed on the first annular circuit board 211, the plurality of lamp beads 212 are arranged in a circumferential array around the center line of the detection hole 101, and the bottom surface of the first annular circuit board 211 is a total reflection surface.
[0050] Optionally, the uniform diffusion cover body 32 has an annular groove 301, and the second annular lamp plate 31 is located in the annular groove 301. In this way, the overall thickness of the second annular light-emitting component 3 can be effectively reduced, and the overall volume of the high-uniform annular light source device can be reduced.
[0051] Optionally, the inner wall of the cylindrical shell 1 is provided with a stepped groove 110, and the second annular light-emitting assembly 3 is installed in the stepped groove 110; the second annular light plate 31 does not protrude from the annular inner wall surface 102. Specifically, this can effectively reduce the light emitted by the second annular light-emitting assembly 3 towards the arc-shaped diffusion plate 22, and reduce the possibility of local bright spots on the workpiece.
[0052] Optionally, one end of the arc-shaped diffusion plate 22 is sealingly connected with the supporting annular plate 23, and the other end extends into the annular groove 301; the other end of the arc-shaped diffusion plate 22 is located between the first annular light plate 21 and the second annular light plate 31. The arc-shaped diffusion plate 22 only diffusely reflects the light emitted by the first annular light plate 21.
[0053] Optionally, the other end of the arc-shaped diffusion plate 22 is clamped by the groove wall of the annular groove 301 and the uniform diffusion cover body 32. In this embodiment, when the uniform diffusion cover body 32 is installed, the other end of the arc-shaped diffusion plate 22 is clamped, so that the relative position between the uniform diffusion cover body 32 and the arc-shaped diffusion plate 22 is accurately maintained. In addition, the above structure is also beneficial to simplify the installation steps.
[0054] Optionally, the opposite ends of the uniform diffusion cover body 32 are sealingly connected with the cylindrical shell 1; a sealed installation space is formed between the uniform diffusion cover body 32 and the cylindrical shell 1, and the second annular light plate 31 is located in the installation space.
[0055] Embodiment two
[0056] This embodiment discloses a visual detection device comprising the high-uniform annular light source device as described in embodiment one.
[0057] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the present application, they should not limit the patent protection scope of the present application. Any equivalent structure or equivalent process substitution or modification based on the essential concept of the present application, using the content described in the specification and drawings, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of the present application.
Claims
1. A highly uniform ring light source device, characterized in that, The application relates to a light-emitting device for a workpiece detection device, which comprises a cylindrical shell (1), a first annular light-emitting component (2) and a second annular light-emitting component (3); the cylindrical shell (1) has a detection hole (101) for the workpiece to pass through, and the first annular light-emitting component (2) and the second annular light-emitting component (3) are both mounted on the inner wall of the detection hole (101) around the center line of the detection hole (101). The first annular light-emitting component (2) comprises a first annular lamp plate (21) and an arc-shaped diffusion plate (22), the second annular light-emitting component (3) comprises a second annular lamp plate (31) and a uniform diffusion cover (32), and the second annular lamp plate (31) is located on the light-emitting side of the first annular lamp plate (21). The first annular lamp plate (21) is perpendicular to the center line of the detection hole (101), the arc-shaped diffusion plate (22) is located on the light-emitting side of the first annular lamp plate (21), the second annular lamp plate (31) is attached to the inner wall of the cylindrical shell (1), and the light-emitting side of the second annular lamp plate (31) is provided with the uniform diffusion cover (32).
2. The high-uniformity ring-shaped light source apparatus according to claim 1, wherein The first annular light-emitting component (2) further comprises a supporting annular plate (23), the supporting annular plate (23) is fixedly connected to the top end of the cylindrical shell (1), and the first annular lamp plate (21) is mounted on the bottom surface of the supporting annular plate (23). The supporting annular plate (23) has a center hole, and the center line of the center hole coincides with the center line of the detection hole (101).
3. The high-uniformity ring-shaped light source apparatus according to claim 2, wherein The supporting annular plate (23), the cylindrical shell (1) and the arc-shaped diffusion plate (22) form a sealed annular space, and the first annular lamp plate (21) is mounted in the annular space and emits light downward. The cylindrical shell (1) has an annular inner wall surface (102) for constituting the side wall of the annular space, and the annular inner wall surface (102) is a total reflection surface.
4. The high-uniformity ring-shaped light source apparatus according to claim 3, wherein The uniform diffusion cover (32) has an annular groove (301), and the second annular lamp plate (31) is located in the annular groove (301).
5. The high-uniformity ring-shaped light source apparatus according to claim 4, wherein The inner wall of the cylindrical shell (1) is provided with a stepped groove (110), and the second annular light-emitting component (3) is mounted in the stepped groove (110). The second annular lamp plate (31) does not protrude from the annular inner wall surface (102).
6. The high-uniformity ring-shaped light source apparatus according to claim 4, wherein One end of the arc-shaped diffusion plate (22) is sealingly connected to the supporting annular plate (23), and the other end of the arc-shaped diffusion plate (22) extends into the annular groove (301). The other end of the arc-shaped diffusion plate (22) is located between the first annular lamp plate (21) and the second annular lamp plate (31).
7. The high-uniformity ring-shaped light source apparatus according to claim 6, wherein The other end of the arc-shaped diffusion plate (22) is clamped by the groove wall of the annular groove (301) and the uniform diffusion cover (32).
8. The high-uniformity ring-shaped light source apparatus according to claim 1, wherein The first annular lamp plate (21) comprises a first annular circuit board (211) and a plurality of lamp beads (212) mounted on the first annular circuit board (211), and the plurality of lamp beads (212) are arranged in a circumferential array around the center line of the detection hole (101).
9. The high-uniformity ring-shaped light source apparatus according to claim 1, wherein, The opposite ends of the uniform diffusion cover (32) are sealingly connected to the cylindrical shell (1). A sealed mounting space is formed between the uniform diffusion cover (32) and the cylindrical shell (1), and the second annular lamp panel (31) is located in the mounting space.
10. A vision inspection apparatus characterized by comprising: The high-uniform annular light source device as claimed in any one of claims 1 to 9 is included.