Coaxial light source and detection device
By setting a light transmission detection plate group, including detection stripes and a diffusion plate, in the coaxial light source, the problem that existing coaxial light sources cannot form multiple lighting effects in different areas of the workpiece is solved, and efficient detection of different areas of the workpiece is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-31
AI Technical Summary
Existing coaxial light sources cannot create different lighting effects in different areas of a workpiece, making it difficult to effectively detect defects in different areas of the workpiece.
A light transmission detection plate assembly is set between the light panel and the beam splitter, including a first light transmission plate and a second light transmission plate. Detection stripes are set on the first light transmission plate, and the second light transmission plate is a diffuser plate. Different lighting effects can be formed by adjusting the position and type of the light transmission plates to meet the detection needs of different areas.
It achieves striped lighting, uniform lighting, and blurred lighting effects in different areas of the workpiece, improving the accuracy and efficiency of the inspection camera in detecting different defects.
Smart Images
Figure CN224067119U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to light source structure technical field especially, relates to a coaxial light source and detection device. BACKGROUND
[0002] The coaxial light source can provide more uniform illumination than the traditional light source, which can improve the accuracy of machine vision detection.
[0003] The coaxial light source includes a lamp panel, a beam splitter and a housing, the housing is provided with a workpiece detection opening and an imaging opening corresponding to the workpiece detection opening on both sides, the beam splitter is arranged between the workpiece detection opening and the imaging opening, the light emitted by the lamp panel can be reflected by the beam splitter and irradiated on the workpiece surface, then the detection camera can take a photo of the illuminated workpiece through the imaging opening to detect the surface defects of the workpiece.
[0004] Therefore, it is necessary to design a coaxial light source and detection device that can form different lighting effects in different areas of the workpiece to detect defects in different areas of the workpiece.
[0005] The above information is given as background information only to assist with understanding the present disclosure, and does not establish or acknowledge any of the above as prior art to the present disclosure. SUMMARY
[0006] The utility model provides a coaxial light source and detection device, can form different light effects in different areas of workpiece to facilitate the detection of defects in different areas of workpiece.
[0007] To achieve the above purpose, the utility model provides the following technical scheme:
[0008] A coaxial light source includes a housing, a lamp panel mounted in the housing and a beam splitter mounted on the light emitting side of the lamp panel; further comprising a light-transmitting detection plate group:
[0009] The light-transmitting detection plate group is installed between the lamp panel and the beam splitter, including a first light-transmitting plate and a second light-transmitting plate, the first light-transmitting plate and the second light-transmitting plate are both parallel to the lamp panel; the first light-transmitting plate is provided with detection stripes at intervals, and the second light-transmitting plate is a diffusion plate;
[0010] In the direction perpendicular to the plane of the lamp panel, the first projection area of the first light-transmitting plate projected to the lamp panel and the second projection area of the second light-transmitting plate projected to the lamp panel at least partially do not overlap.
[0011] Optionally, the first light-transmitting plate projects to a first projection area of the lamp panel and the second light-transmitting plate projects to a second projection area of the lamp panel in a direction perpendicular to a panel surface of the lamp panel, and the first projection area and the second projection area are completely non-overlapped.
[0012] Optionally, the light-transmitting detection plate set further comprises a third light-transmitting plate, and the third light-transmitting plate is a diffusion plate.
[0013] The light diffusion properties of the second light-transmitting plate and the third light-transmitting plate are different.
[0014] Optionally, the second light-transmitting plate projects to a second projection area of the lamp panel and the third light-transmitting plate projects to a third projection area of the lamp panel in a direction perpendicular to a panel surface of the lamp panel, and the second projection area and the third projection area are at least partially non-overlapped.
[0015] Optionally, the third light-transmitting plate is an opal diffusion plate.
[0016] Optionally, the shell is provided with a first insertion sliding groove and a second insertion sliding groove, the first light-transmitting plate is installed in the first insertion sliding groove, and the second light-transmitting plate is installed in the second insertion sliding groove.
[0017] The position of the first light-transmitting plate in the first insertion sliding groove is adjustable, and the position of the second light-transmitting plate in the second insertion sliding groove is adjustable.
[0018] Optionally, the first insertion sliding groove and the second insertion sliding groove are parallel to each other, and the second insertion sliding groove is parallel to the lamp panel.
[0019] Optionally, the light-transmitting detection plate set further comprises a third light-transmitting plate, and transverse stripes are arranged on the third light-transmitting plate in a spaced manner, and the transverse stripes are perpendicular to the detection stripes.
[0020] Optionally, the lamp panel comprises a circuit board attached to the shell and lamp beads arranged in a rectangular array on the circuit board.
[0021] A detection device comprises the coaxial light source according to any one of the above.
[0022] Compared with the prior art, the coaxial light source and the detection device have the following beneficial effects:
[0023] The coaxial light source and the detection device provided by the coaxial light source and the detection device have the following beneficial effects:
[0024] 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
[0025] 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.
[0026] Figure 1 This is a cross-sectional structural schematic diagram of the coaxial light source provided in an embodiment of the present utility model;
[0027] Figure 2 This is a schematic diagram of the lighting effect on the workpiece provided in this embodiment of the utility model.
[0028] Reference numerals: 1. Housing; 101. First insertion groove; 102. Second insertion groove; 2. Lamp panel; 3. Beam splitter; 41. First light-transmitting plate; 42. Second light-transmitting plate; 43. Third light-transmitting plate. Detailed Implementation
[0029] 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.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] Example 1
[0039] In view of the aforementioned defects in existing coaxial light sources, the applicant, based on years of rich 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 technology that can solve the defects in the existing technology and make the coaxial light source more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.
[0040] Please refer to Figures 1-2 This utility model embodiment provides a coaxial light source, including a housing 1, a lamp plate 2 installed in the housing 1, and a beam splitter 3 installed on the light-emitting side of the lamp plate 2, the beam splitter 3 being tilted at 45°; it also includes a light transmission detection plate group, which is used to change the light emission effect of the lamp plate 2.
[0041] The light transmission detection plate assembly is installed between the lamp plate 2 and the beam splitter 3, including a first light transmission plate 41 and a second light transmission plate 42. Both the first light transmission plate 41 and the second light transmission plate 42 are parallel to the lamp plate 2, and the light passing through the first light transmission plate 41 is reflected by the beam splitter 3 and then directed toward the workpiece; similarly, the light passing through the second light transmission plate 42 is reflected by the beam splitter 3 and then directed toward the workpiece; the first light transmission plate 41 is provided with detection stripes at intervals, and the second light transmission plate 42 is a diffuser plate.
[0042] Along a direction perpendicular to the surface of the lamp panel 2, the first projection area of the first light-transmitting plate 41 projected onto the lamp panel 2 and the second projection area of the second light-transmitting plate 42 projected onto the lamp panel 2 do not overlap at least partially.
[0043] In this embodiment, the coaxial light source has a light transmission detection plate assembly between the lamp plate 2 and the beam splitter 3. This light transmission detection plate assembly includes a first light transmission plate 41 and a second light transmission plate 42. Light emitted from the lamp plate 2 passes through the first light transmission plate 41 and is reflected by the beam splitter 3, forming a striped lighting effect 100 in the first area of the workpiece. Light emitted from the lamp plate 2 passes through the second light transmission plate and is reflected by the beam splitter 3, forming a uniform lighting effect 200 in the second area of the workpiece. This facilitates camera detection of defects in different areas. The striped lighting effect 100 can be used to detect surface distortion (such as protrusions or depressions) in the first area of the workpiece, while the uniform lighting effect 200 is more effective at detecting surface scratches and other defects on the workpiece.
[0044] It should also be noted that a new and unique lighting effect will be formed in the overlapping area of the first and second projection areas, which can also be used to inspect the surface of the workpiece.
[0045] Optionally, along the direction perpendicular to the surface of the lamp plate 2, the first projection area of the first light-transmitting plate 41 projected onto the lamp plate 2 and the second projection area of the second light-transmitting plate 42 projected onto the lamp plate 2 do not overlap at all, which can help reduce interference and improve the accuracy of detection.
[0046] Optionally, the light transmission detection plate assembly also includes a third light-transmitting plate 43, which is a diffuser plate; the second light-transmitting plate 42 and the third light-transmitting plate 43 have different light diffusion properties. For example, the light emitted from the lamp plate 2 passes through the second light-transmitting plate 42 and is reflected by the beam splitter 3, forming a relatively more directional blurred lighting effect in the second region of the workpiece. The third light-transmitting plate 43 is a milky white diffuser plate. The light emitted from the lamp plate 3 passes through the third light-transmitting plate 43 and is reflected by the beam splitter 3, forming a specific uniform lighting effect 300 in the third region of the workpiece, that is, uniform light intensity, and making the lighting effect more uniform.
[0047] Optionally, along the direction perpendicular to the surface of the lamp panel 2, the second projection area of the second light-transmitting plate 42 projected onto the lamp panel 2 and the third projection area of the third light-transmitting plate 43 projected onto the lamp panel 2 do not overlap at least partially, which can effectively reduce the training time of the algorithm.
[0048] Optionally, the housing 1 is provided with a first insertion slide 101 and a second insertion slide 102. A first light-transmitting plate 41 is installed in the first insertion slide 101, and a second light-transmitting plate 42 is installed in the second insertion slide 102. The position of the first light-transmitting plate 41 in the first insertion slide 101 is adjustable, and the position of the second light-transmitting plate 42 in the second insertion slide 102 is adjustable. In this embodiment, the first light-transmitting plate 41 and the second light-transmitting plate 42 of different sizes can be appropriately adjusted according to the size of different areas of the workpiece, and the positions of the first light-transmitting plate 41 and the second light-transmitting plate 42 can be changed to meet the actual detection needs.
[0049] Optionally, the first insertion slide 101 and the second insertion slide 102 are parallel to each other, and the second insertion slide 102 is parallel to the lamp plate 2, so as to better adjust the relative position of the first light-transmitting plate 41 and the second light-transmitting plate 42.
[0050] Optionally, the light transmission detection plate assembly also includes a third light transmission plate 43, on which horizontal stripes are spaced apart and perpendicular to the detection stripes.
[0051] Optionally, the lamp board 2 includes a circuit board that fits into the housing 1 and a rectangular array of lamp beads disposed on the circuit board.
[0052] Example 2
[0053] This embodiment discloses a detection device, including a coaxial light source as described in any one of the embodiments. The detection device also includes a detection camera. Figure 1 As shown, the detection camera is positioned on the top side of the beam splitter.
[0054] 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 coaxial light source comprising a housing (1), a lamp panel (2) mounted in the housing (1), and a light splitter (3) mounted on the light exit side of the lamp panel (2); characterized in that, The light-transmitting detection plate set comprises: The light-transmitting detection plate set is installed between the lamp plate (2) and the light splitter (3), and comprises a first light-transmitting plate (41) and a second light-transmitting plate (42), both of which are parallel to the lamp plate (2); the first light-transmitting plate (41) is provided with detection stripes at intervals; and the second light-transmitting plate (42) is a diffusion plate. In a direction perpendicular to the surface of the lamp plate (2), the first projection area of the first light-transmitting plate (41) and the second projection area of the second light-transmitting plate (42) on the lamp plate (2) at least partially do not overlap.
2. The coaxial light source of claim 1, wherein, In a direction perpendicular to the surface of the lamp plate (2), the first projection area of the first light-transmitting plate (41) and the second projection area of the second light-transmitting plate (42) on the lamp plate (2) completely do not overlap.
3. The coaxial light source of claim 1, wherein, The light-transmitting detection plate set further comprises a third light-transmitting plate (43), which is a diffusion plate. The light diffusion properties of the second light-transmitting plate (42) and the third light-transmitting plate (43) are different.
4. The coaxial light source of claim 3, wherein, In a direction perpendicular to the surface of the lamp plate (2), the second projection area of the second light-transmitting plate (42) and the third projection area of the third light-transmitting plate (43) on the lamp plate (2) at least partially do not overlap.
5. The coaxial light source of claim 3, wherein, The third light-transmitting plate (43) is a milky white diffusion plate.
6. The coaxial light source of claim 1, wherein, The housing (1) is provided with a first insertion sliding groove (101) and a second insertion sliding groove (102), the first light-transmitting plate (41) is installed in the first insertion sliding groove (101), and the second light-transmitting plate (42) is installed in the second insertion sliding groove (102). The position of the first light-transmitting plate (41) in the first insertion sliding groove (101) is adjustable, and the position of the second light-transmitting plate (42) in the second insertion sliding groove (102) is adjustable.
7. The coaxial light source of claim 6, wherein, The first insertion sliding groove (101) and the second insertion sliding groove (102) are parallel to each other, and the second insertion sliding groove (102) is parallel to the lamp plate (2).
8. The coaxial light source of claim 1, wherein, The light-transmitting detection plate set further comprises a third light-transmitting plate (43), which is provided with transverse stripes at intervals, and the transverse stripes are perpendicular to the detection stripes.
9. The coaxial light source of claim 1, wherein, The lamp plate (2) comprises a circuit board attached to the housing (1) and lamp beads arranged in a rectangular array on the circuit board.
10. A detection device, characterized in that The coaxial light source comprises the light-transmitting detection plate set.