An arcuate light source and surface inspection apparatus
By dividing the reflective surface of the arched light source into a mirror surface and a diffuse reflection arc surface, and combining it with a variety of light-emitting components, the problem of the small detection range of existing arched light sources is solved, achieving a wider detection capability and reduced cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG AOPUTE TECH CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-08-04
AI Technical Summary
The existing arched light source reflector is a single-piece structure, which has a limited range of applications and requires an auxiliary light source, increasing costs.
The reflective surface of the arched light source is divided into a specular reflection arc surface and a diffuse reflection arc surface. Combined with the first and second light-emitting components, they form a linear light spot and uniform illumination, respectively, thereby enhancing the detection capability.
This expands the application range of the arched light source, enabling it to detect both dimensional deviations and minute defects in workpieces, thus reducing inspection costs.
Smart Images
Figure CN224593134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of light source structure, and in particular to an arched light source and a surface detection device. Background Technology
[0002] An arched light source is a light source device with an arched shape used to provide uniform illumination. It is suitable for various inspection and imaging tasks and is widely used in fields such as visual inspection in precision manufacturing and medical imaging.
[0003] Existing arched light sources typically have a single, arched reflector. The light-emitting component emits light towards the reflector, which then reflects the emitted light, uniformly illuminating the top surface of the workpiece located at the bottom of the arched light source. However, existing arched light sources offer limited illumination, generally only able to uniformly illuminate workpieces of specific dimensions, resulting in a narrow range of applications. This necessitates the use of additional detection light sources at the rear of the arched light source to assist in detecting other surface defects (such as minor scratches), thus increasing the cost of the detection device.
[0004] Therefore, it is necessary to design an arched light source and surface inspection device to improve the applicability of the arched light source and reduce the inspection cost.
[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 an arched light source and a surface inspection device to improve the applicability of the arched light source and reduce inspection costs.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] An arched light source includes an arched reflector, a first light-emitting component, and a second light-emitting component;
[0009] The arched reflector has a spaced-apart mirrored arc surface and a diffused arc surface, the mirrored arc surface and the diffused arc surface forming the reflective surface of the arched reflector;
[0010] The first light-emitting component is installed on the bottom side of the specular reflective arc surface to emit light into the specular reflective arc surface, and the specular reflective arc surface reflects the light from the first light-emitting component to form a linear light spot on the surface of the workpiece to be tested; the second light-emitting component is installed on the bottom side of the diffuse reflective arc surface to emit light into the diffuse reflective arc surface.
[0011] Optionally, the mirror reflection arc surface includes a plurality of arc-shaped mirrors, with the edges of two adjacent arc-shaped mirrors joined together, and all the arc-shaped mirrors are arranged in an arc around the first light-emitting component.
[0012] Optionally, the arched light source also includes a control device, which is electrically connected to the first light-emitting component and the second light-emitting component, respectively.
[0013] Optionally, the arched reflector includes a support shell, a first reflective assembly installed in the support shell, and a second reflective assembly installed in the support shell;
[0014] The first reflective component forms the specular reflective arc surface, and the second reflective component forms the diffuse reflective arc surface.
[0015] Optionally, the second reflective component includes a hollow elastic cover, the elastic cover having an adjustable air cavity formed inside, and the adjustable air cavity being connected to a gas suction device.
[0016] The elastic cover has an arc-shaped surface, and a diffuse reflection layer is attached to the arc-shaped surface to form the diffuse reflection arc surface.
[0017] Optionally, the cross-section of the regulating air chamber is crescent-shaped, and the top surface of the elastic cover is attached to the top wall of the support shell, and the side surface of the elastic cover is attached to the side wall of the support shell.
[0018] The regulating air chamber is composed of a concave arc surface and a convex arc surface, with the concave arc surface facing the diffuse reflection arc surface and the convex arc surface facing the concave arc surface.
[0019] Optionally, the further away from the center of the convex arc surface, the closer the point on the convex arc surface is to the diffuse reflection arc surface.
[0020] Optionally, the diffuse reflection layer includes a diffuse reflection film and a flexible transparent layer;
[0021] The diffuse reflective film is attached to the arc-shaped surface of the elastic cover, and the flexible transparent layer is disposed on the side of the diffuse reflective film away from the elastic cover.
[0022] Optionally, the first light-emitting component includes a plurality of first LEDs arranged at intervals along a first direction; the second light-emitting component includes a plurality of second LEDs arranged at intervals along a first direction.
[0023] A surface inspection device includes an arched light source as described in any of the preceding claims.
[0024] Compared with the prior art, the present invention has the following beneficial effects:
[0025] The arched light source and surface inspection device provided by this utility model divide the reflective surface of the arched reflector into a mirror-reflecting arc surface and a diffuse-reflecting arc surface that are spaced apart and opposite to each other. The light emitted by the first light-emitting component can form a linear light spot on the surface of the workpiece after passing through the mirror-reflecting arc surface, and the light emitted by the second light-emitting component can be reflected by the diffuse-reflecting arc surface and uniformly projected onto the surface of the workpiece to be tested, thereby further expanding the application range of the arched light source. The arched light source and surface inspection device can not only detect the deviation of the size and shape of the workpiece to be tested normally, but also detect the small defects on the surface of the workpiece to be tested more accurately.
[0026] 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
[0027] 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.
[0028] Figure 1 This is a schematic diagram of the installation structure of the arched light source provided in this embodiment of the utility model;
[0029] Figure 2 This is a cross-sectional structural diagram of the arched light source provided in an embodiment of the present utility model;
[0030] Figure 3 This is a schematic diagram of the structure of the diffuse reflection layer provided in an embodiment of the present invention;
[0031] Figure 4 yes Figure 3 A magnified schematic diagram of the intermediate diffuse reflector layer at position A.
[0032] Reference numerals: 1. Arched reflector; 101. Specular reflective arc surface; 102. Diffuse reflective arc surface; 103. Camera observation port; 11. Support shell; 12. First reflective component; 13. Second reflective component; 131. Elastic cover; 132. Adjustable air cavity; 1301. Diffuse reflective layer; 13001. Diffuse reflective film; 13002. Flexible transparent layer; 2. First light-emitting component; 3. Second light-emitting component. Detailed Implementation
[0033] 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.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] Example 1
[0043] In view of the aforementioned defects in existing arched 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 solution to the defects in the existing technology and make the arched light source more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.
[0044] Please refer to Figures 1 to 4 This utility model embodiment provides an arched light source, including an arched reflector 1, a first light-emitting component 2, and a second light-emitting component 3, wherein the arched reflector 1 serves to position and support the first light-emitting component 2 and the second light-emitting component 3; as Figure 1 and Figure 2As shown, the arched reflector 1 has a mirrored reflective arc surface 101 and a diffuse reflective arc surface 102 spaced apart from each other, and the mirrored reflective arc surface 101 and the diffuse reflective arc surface 102 constitute the reflective surface of the arched reflector 1.
[0045] The first light-emitting component 2 is installed on one side of the bottom of the mirror-reflecting arc surface 101 to emit light into the mirror-reflecting arc surface 101. The mirror-reflecting arc surface 101 reflects the light emitted by the first light-emitting component 2 to form a linear light spot on the surface of the workpiece to be tested. The second light-emitting component 3 is installed on one side of the bottom of the diffuse reflection arc surface 102 to emit light into the diffuse reflection arc surface 102. The diffuse reflection arc surface 102 reflects the light to uniformly illuminate the surface of the workpiece. In the actual testing process, the movement direction of the workpiece to be tested is perpendicular to the linear light spot, so that the linear light plate can sweep across the top surface of the workpiece to be tested.
[0046] In this embodiment, the arched light source divides the reflective surface of the arched reflector 1 into two spaced-apart, opposing specular reflective arc surfaces 101 and diffuse reflective arc surfaces 102. Light emitted from the first light-emitting component 2 passes through the specular reflective arc surface 101 and forms a linear light spot on the workpiece surface, while light emitted from the second light-emitting component 3 is reflected by the diffuse reflective arc surface 102 and uniformly projected onto the surface of the workpiece. Therefore, the arched light source can not only detect dimensional deviations and surface bubbles in the workpiece, but also detect minor surface defects through the linear light spot formed by the first light-emitting component 2 and the specular reflective arc surface 101. This embodiment of the arched light source has a wider range of applications.
[0047] It should be noted that the arched light source in this embodiment can activate either the first light-emitting component 2 or the second light-emitting component 3 individually, or it can activate both the first light-emitting component 2 and the second light-emitting component 3 simultaneously, so as to create more diverse lighting effects and meet more detection needs.
[0048] Optionally, the mirror-reflecting arc surface 101 includes a plurality of arc-shaped mirrors, with the edges of adjacent arc-shaped mirrors abutting each other, and all arc-shaped mirrors arranged in an arc around the first light-emitting component 2. In this embodiment, the arc-shaped mirrors arranged in an arc better focus the light from the first light-emitting component 2 into a linear light spot, resulting in a higher intensity of the formed linear light spot.
[0049] Optionally, the arched light source also includes a control device, which is electrically connected to the first light-emitting component 2 and the second light-emitting component 3. In this embodiment, the control device controls the first light-emitting component 2 and the second light-emitting component 3 to be lit or turned off.
[0050] Optionally, the arched reflector 1 includes a support shell 11, a first reflective component 12 installed in the support shell 11, and a second reflective component 13 installed in the support shell 11; the first reflective component 12 forms a specular reflective arc surface 101, and the second reflective component 13 forms a diffuse reflective arc surface 102. Both the first reflective component 12 and the second reflective component 13 are individually detachable, thus facilitating disassembly and assembly.
[0051] Optionally, the second reflective component 13 includes a hollow elastic cover 131, with an adjusting air cavity 132 formed inside the elastic cover 131, and the adjusting air cavity 132 is connected to a gas suction device; the elastic cover 131 has an arc-shaped surface, and a diffuse reflection layer 1301 is attached to the arc-shaped surface to form a diffuse reflection arc surface 102. It should be noted that when a certain amount of gas is filled into the adjusting air cavity 132, the elastic cover 131 will maintain a certain shape, so that the diffuse reflection arc surface 102 can be put into normal operation. In this embodiment, the elastic cover 131 can be made of silicone, rubber and plastic insulation cotton, or other elastic materials. The elastic cover 131 should generally not be too soft or too hard.
[0052] In this embodiment, by injecting gas of different pressures into the regulating air chamber 132, the curvature of the arc surface of the elastic cover 131 can be changed, thereby changing the curvature of the diffuse reflection arc surface 102, and ultimately altering the diffuse reflection light emission effect, resulting in a significant change in the light focusing effect. For diffuse reflection lighting requiring higher brightness, the curvature of the arc surface can be increased to enhance the intensity of diffuse reflection light emission; conversely, for diffuse reflection lighting requiring lower brightness, the curvature of the arc surface can be reduced.
[0053] Optionally, the regulating air chamber 132 has a crescent-shaped cross-section, and the top surface of the elastic cover 131 is attached to the top wall of the supporting shell 11, while the side surface of the elastic cover 131 is attached to the side wall of the supporting shell 11. The crescent-shaped regulating air chamber 132 is composed of a concave arc surface 134 and a convex arc surface 133, with the concave arc surface 134 facing the diffuse reflection arc surface 102 and the convex arc surface 133 facing the concave arc surface 134. Figure 3 The crescent-shaped regulating air chamber 132 can better adapt to the deformation effect of the arc surface, avoid excessive irregular deformation of the arc surface, and make the overall bending deformation of the arc surface more reasonable.
[0054] Optionally, the further away from the center of the convex arc surface 133, the closer the point on the convex arc surface 133 is to the diffuse reflection arc surface 102. By adjusting the pressure change within the air cavity 132, combined with the strength and elastic deformation capability of the elastic cover 131 itself, the curvature of the arc surface can be adjusted more appropriately. That is, the deformation of the arc surface is relatively smaller the further away from the center of the concave wall, and the deformation is relatively larger the closer to the center of the concave wall, thereby maintaining the overall arc shape of the arc surface and avoiding a situation where one end of the arc surface is extremely curved while the other end is very slightly curved.
[0055] Optionally, the diffuse reflection layer 1301 includes a diffuse reflection film 13001 and a flexible transparent layer 13002; the diffuse reflection film 13001 conforms to the arcuate surface of the elastic cover 131, and the flexible transparent layer 13002 is disposed on the side of the diffuse reflection film 13001 away from the elastic cover 131. Specifically, the diffuse reflection film 13001 serves to reflect the second light-emitting component 3, and the elasticity of the flexible transparent layer itself allows the diffuse reflection film 13001 to better maintain its conformity to the arcuate surface after the curvature of the arcuate surface changes.
[0056] Optionally, a camera viewing port 103 is formed between the specular reflection arc surface 101 and the diffuse reflection arc surface 102.
[0057] Optionally, the first light-emitting component 2 includes a plurality of first LEDs arranged at intervals along a first direction; the second light-emitting component 3 includes a plurality of second LEDs arranged at intervals along a first direction.
[0058] Example 2
[0059] This embodiment discloses a surface inspection device, including an arched light source 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. An arcuate light source, characterized in that, It includes an arched reflector (1), a first light-emitting assembly (2), and a second light-emitting assembly (3); The arched reflector (1) has a spaced-apart mirrored arc surface (101) and a diffused arc surface (102), which together form the reflective surface of the arched reflector (1). The first light-emitting component (2) is installed on the bottom side of the specular reflective arc surface (101) to emit light into the specular reflective arc surface (101), and the specular reflective arc surface (101) reflects the light emitted by the first light-emitting component (2) to form a linear light spot on the surface of the workpiece to be tested; the second light-emitting component (3) is installed on the bottom side of the diffuse reflective arc surface (102) to emit light into the diffuse reflective arc surface (102).
2. An arcuate light source as claimed in claim 1, characterized in that The mirror reflection arc surface (101) includes a plurality of arc-shaped mirrors, with the edges of two adjacent arc-shaped mirrors joined together, and all the arc-shaped mirrors are arranged in an arc around the first light-emitting component (2).
3. An arcuate light source as claimed in claim 1, characterized in that It also includes a control device, which is electrically connected to the first light-emitting component (2) and the second light-emitting component (3) respectively.
4. An arcuate light source as claimed in claim 1, characterized in that The arched reflector (1) includes a support shell (11), a first reflective assembly (12) installed in the support shell (11), and a second reflective assembly (13) installed in the support shell (11); The first reflective component (12) forms the specular reflective arc surface (101), and the second reflective component (13) forms the diffuse reflective arc surface (102).
5. An arcuate light source as claimed in claim 4, characterized in that The second reflective component (13) includes a hollow elastic cover (131), the elastic cover (131) having an adjustable air cavity (132) inside, and the adjustable air cavity (132) being connected to a gas suction device; The elastic cover (131) has an arc-shaped surface, on which a diffuse reflection layer (1301) is attached to form the diffuse reflection arc surface (102).
6. An arcuate light source as claimed in claim 5, characterized in that The cross-section of the regulating air chamber (132) is crescent-shaped, and the top surface of the elastic cover (131) is attached to the top wall of the support shell (11), and the side surface of the elastic cover (131) is attached to the side wall of the support shell (11). The regulating air chamber (132) is composed of a concave arc surface (134) and a convex arc surface (133), with the concave arc surface (134) facing the diffuse reflection arc surface (102) and the convex arc surface (133) facing the concave arc surface (134).
7. An arcuate light source according to claim 6, characterized in that The further away from the center of the convex arc surface (133), the closer the point on the convex arc surface (133) is to the diffuse arc surface (102).
8. An arcuate light source as claimed in claim 5, characterized in that The diffuse reflection layer (1301) includes a diffuse reflection film (13001) and a flexible transparent layer (13002); The diffuse reflection film (13001) is attached to the arc-shaped surface of the elastic cover (131), and the flexible transparent layer (13002) is disposed on the side of the diffuse reflection film (13001) away from the elastic cover (131).
9. An arcuate light source as claimed in claim 1, characterized in that The first light-emitting component (2) comprises a plurality of first lamp beads arranged at intervals along a first direction; and the second light-emitting component (3) comprises a plurality of second lamp beads arranged at intervals along the first direction.
10. A surface inspection apparatus characterized by comprising: An arch-shaped light source comprising any one of the light sources according to claims 1 to 9.