Combined light source and lens detection device
By combining a spherical integrating light source and a ring light source in the detection device, the problem of poor detection results for multi-layer lenses was solved, and flexible detection of multi-layer lenses was achieved.
Patent Information
- Application Number
- CN202511405367.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2025-11-28
AI Technical Summary
Existing light sources used for lens inspection cannot effectively detect defects in multilayer lenses, resulting in limited detection effectiveness.
A combined light source is used, including a spherical integrating light source component and a ring light source component. By integrating the spherical integrating light source and multiple ring light sources, different combinations of ring light sources are used to match the detection of lenses of different layers.
It improves the flexibility and effectiveness of lens inspection, and can effectively detect surface defects in multilayer lenses.
Smart Images
Figure CN121027119A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mirror inspection technology, and more particularly to a combined light source and lens inspection device. Background Technology
[0002] Inspecting the surface defects of lenses is a challenging task in industrial vision inspection because lenses have a multi-layered structure, and the number of layers is not fixed but depends on the type and function of the lens. Due to the reflective properties of the lens itself, defects are often masked by highlights when using traditional illumination and imaging methods; furthermore, the multi-layered structure of lenses (such as anti-reflective coatings, hardening coatings, and hydrophobic coatings) makes the types of defects and inspection methods different from those of ordinary mirrors.
[0003] Currently, the light sources used for inspecting lenses or mirrors on the market are generally equipped with only one ring light source. When applied to inspecting multi-layered lenses, the types of defects that can be detected are relatively limited, and the inspection results cannot meet expectations.
[0004] Therefore, there is an urgent need in this field for a novel light source for the detection of multilayer lenses, which can be matched to the detection of lenses with different layers.
[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. Summary of the Invention
[0006] The purpose of this invention is to provide a combined light source and lens detection device to solve or at least partially solve the technical problems existing in the prior art.
[0007] To achieve this objective, the present invention adopts the following technical solution:
[0008] In a first aspect, the present invention provides a combined light source, including a spherical integrating light source assembly and a ring light source assembly;
[0009] The ring light source assembly includes a diffuser plate and a plurality of ring light sources arranged around the diffuser plate; a frustum-shaped light emission channel is provided through the middle of the diffuser plate, and the inner diameter of the light emission channel increases sequentially along the light emission direction of the spherical integrating light source assembly; the plurality of ring light sources are arranged at intervals along the light emission direction of the spherical integrating light source assembly.
[0010] The light emitted by the spherical integrating light source assembly illuminates the surface of the workpiece to be inspected through the light output channel; the light emitted by the ring light source passes through the diffuser plate into the light output channel and illuminates the surface of the workpiece through the light output channel.
[0011] Optionally, the sphere integrating light source assembly includes a sphere integrating base, the top of which is recessed to form a light source mounting groove, and the bottom of the light source mounting groove is provided with an annular groove, in which a sphere integrating light source is installed.
[0012] The light source mounting slot is also fixedly provided with a reflector for covering the spherical integrating light source, and the inner surface of the reflector is coated with a diffuse reflection coating; a shooting window is opened at the top center of the reflector.
[0013] Optionally, a light-emitting through hole is provided through the center of the bottom of the light source mounting groove, and the top opening of the light-emitting channel is positioned directly opposite the light-emitting through hole;
[0014] The shooting window and the light-emitting aperture are both circular holes, and the reflector is hemispherical.
[0015] The central axis of the shooting window, the central axis of the light-emitting aperture, the central axis of the reflector, and the central axis of the light-emitting channel are all on the same straight line.
[0016] Optionally, the plurality of ring light sources includes a first ring light source, a second ring light source, and a third ring light source arranged sequentially along the light emission direction of the spherical integrating light source assembly;
[0017] The ring light source assembly also includes a mounting housing, which comprises a main body one, a main body two, a main body three, and a perimeter;
[0018] The top of the first main body is locked and fixedly connected to the bottom of the spherical integrating base, and the bottom of the first main body is locked and fixedly connected to the top of the second main body. The first main body and the second main body form a first mounting cavity for fixing and installing the first annular light source.
[0019] The bottom of the second main body and the top of the third main body are snapped together and fixedly connected. The second main body and the third main body are arranged to form a second mounting cavity for fixing and installing the second annular light source.
[0020] The bottom of the main body three and the top of the periphery are snapped together and fixedly connected, and the main body three and the periphery form a third mounting cavity for fixing and installing the third annular light source.
[0021] Optionally, the bottom of the perimeter is provided with a plurality of plate connection holes; the bottom edge of the diffuser plate extends outward to form a mounting ring, and a through hole is provided on the mounting ring corresponding to the position of the plate connection hole; the ring light source assembly also includes a plurality of plate connectors that match the plate connection holes;
[0022] Each of the plate connectors passes through the corresponding through hole and is fixedly connected to the corresponding plate connection hole.
[0023] Optionally, the spherical integrating light source assembly further includes a pressure ring and multiple connectors, and the bottom of the light source mounting groove is provided with multiple fixing holes that match the connectors;
[0024] The bottom edge of the reflector extends outward to form an annular mounting portion, and the mounting portion has a through hole corresponding to the position of the fixing hole. The pressure ring has a mounting hole corresponding to the position of the through hole.
[0025] The connector passes through the mounting hole and the connecting through hole in sequence and is fixedly connected to the fixing hole. The reflector is then tightly installed in the light source mounting groove using the pressure ring.
[0026] Optionally, the distance between the spherical integrating light source and the first annular light source is 30±5mm;
[0027] The first ring light source, the second ring light source, and the third ring light source are arranged at equal intervals along the light emission direction of the spherical integrating light source assembly.
[0028] Optionally, the outer diameter of the first annular light source and the outer diameter of the spherical integrating light source are the same, both being 120 mm.
[0029] Optionally, the inner diameter of the light-emitting through-hole is larger than the inner diameter of the top opening of the light-emitting channel.
[0030] In a second aspect, the present invention provides a lens detection device, including an imaging component and an auxiliary light source, wherein the auxiliary light source adopts a combined light source as described above;
[0031] The lens of the shooting component is positioned directly opposite the shooting window of the spherical integrator light source component.
[0032] Compared with the prior art, the present invention has the following beneficial effects:
[0033] The combined light source proposed in this invention integrates a spherical integrating light source and multiple ring light sources into one unit. In use, the ring light sources can be used individually or in combination with the spherical integrating light source to match the detection of lenses of different layers, which greatly improves the flexibility of detection.
[0034] The present invention has other features and advantages, which 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 the invention. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a front view structural diagram of a lens detection device provided in an embodiment of the present invention.
[0037] Figure 2 for Figure 1 AA-direction cross-section diagram.
[0038] Figure 3 This is an exploded structural diagram of a lens detection device provided in an embodiment of the present invention.
[0039] Figure 4 for Figure 3 FF section view.
[0040] In the picture:
[0041] 10. Shooting components; 11. Camera; 12. Lens;
[0042] 20. Integrating sphere light source assembly; 201. Integrating sphere base; 2010. Light source mounting slot; 2011. Annular groove; 2012. Light exit hole; 21. Integrating sphere light source; 22. Reflector; 221. Imaging window; 23. Pressure ring;
[0043] 30. Ring light source assembly; 301. Main body one; 302. Main body two; 303. Main body three; 304. Peripheral; 31. First ring light source; 32. Second ring light source; 33. Third ring light source; 34. Diffuser plate; 341. Light emission channel;
[0044] 100. Workpiece. Detailed Implementation
[0045] 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.
[0046] 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.
[0047] 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.
[0048] 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.
[0049] 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.
[0050] 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.
[0051] 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.
[0052] 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.
[0053] 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.
[0054] Example 1:
[0055] Please see Figures 1-4 , Figure 1 This is a front view structural diagram of a lens detection device provided in an embodiment of the present invention. Figure 2 for Figure 1 AA-direction cross-section diagram, Figure 3 This is an exploded structural diagram of a lens testing device provided in an embodiment of the present invention. Figure 4 for Figure 3 FF section view.
[0056] like Figure 1 As shown, this embodiment provides a lens inspection device, including an imaging component 10 and a combined light source; the combined light source is located between the imaging component 10 and the workpiece 100 to be inspected;
[0057] The shooting component 10 includes a camera 11 and a lens 12 used in conjunction with the camera 11;
[0058] The combined light source includes a spherical integrating light source assembly 20 and a ring light source assembly 30;
[0059] like Figure 2 and Figure 3 As shown, the ring light source assembly 30 includes a diffuser plate 34 and a plurality of ring light sources disposed around the diffuser plate 34;
[0060] like Figure 4 As shown, a frustum-shaped light-emitting channel 341 is provided through the middle of the diffuser plate 34, and the inner diameter of the light-emitting channel 341 increases sequentially along the light-emitting direction of the sphere integrating light source assembly 20; multiple ring light sources are arranged at intervals along the light-emitting direction of the sphere integrating light source assembly 20.
[0061] The light energy emitted by the sphere integrating light source assembly 20 is irradiated on the surface of the workpiece 100 through the light output channel 341; the light energy emitted by the ring light source enters the light output channel 341 through the diffuser plate 34 and is irradiated on the surface of the workpiece 100 through the light output channel 341.
[0062] The ring light source is used to highlight surface defects (such as scratches, dents, etc.), while the spherical integrating light source provides diffuse illumination to eliminate reflections and highlight the surface itself (such as color, texture, patterns, etc.). This combined light source integrates a spherical integrating light source and multiple ring light sources into one unit. Multiple ring light sources are placed at different heights to form different light-emitting surfaces. In use, the ring light sources can be used individually or in combination with the spherical integrating light source to match the inspection of different lens layers, greatly improving the flexibility of inspection and enriching inspection needs.
[0063] Furthermore, such as Figure 3 As shown, the sphere integrating light source assembly 20 includes a sphere integrating base 201. The top of the sphere integrating base 201 is recessed to form a light source mounting groove 2010. An annular groove 2011 is formed at the bottom of the light source mounting groove. A sphere integrating light source 21 is installed in the annular groove 2011.
[0064] The light source mounting slot 2010 is also fixedly provided with a reflector 22 for covering the spherical integrating light source 21. The inner surface of the reflector 22 is coated with a diffuse reflection coating. A shooting window 221 is opened at the center of the top of the reflector 22.
[0065] More specifically, such as Figure 4 As shown, a light-emitting through hole 2012 is provided through the center of the bottom of the light source mounting groove 2010, and the top opening of the light-emitting channel 341 is set directly opposite the light-emitting through hole 2012.
[0066] Both the imaging window 221 and the light-emitting aperture 2012 are circular holes, and the reflector 22 is hemispherical.
[0067] The central axis of the shooting window 221, the central axis of the light exit hole 2012, the central axis of the reflector 22, and the central axis of the light exit channel 341 are on the same straight line.
[0068] Lens 12 is positioned directly opposite the shooting window 221 of the spherical integrating light source assembly 20.
[0069] Specifically, such as Figure 3As shown, the multiple ring light sources include a first ring light source 31, a second ring light source 32 and a first ring light source 33 arranged sequentially along the light output direction of the spherical integrating light source assembly 20;
[0070] The ring light source assembly 30 also includes a mounting housing, which includes a main body 301, a second main body 302, a third main body 303, and a perimeter 304;
[0071] The top of the main body 301 is fixedly connected to the bottom of the spherical integrator base 201, and the bottom of the main body 301 is fixedly connected to the top of the main body 302. The main body 301 and the main body 302 form a first mounting cavity for fixing the first annular light source 31.
[0072] The bottom of the second main body 302 and the top of the third main body 303 are snapped together and fixedly connected. The second main body 302 and the third main body 303 form a second mounting cavity for fixing the second annular light source 32.
[0073] The bottom of the main body 303 and the top of the perimeter 304 are snapped together and fixedly connected. The main body 303 and the perimeter 304 form a third mounting cavity for fixing and installing the third annular light source 33.
[0074] More specifically, the bottom of the perimeter 304 is provided with multiple plate connection holes; the bottom edge of the diffuser plate 34 extends outward to form a mounting ring, and a through hole is provided on the mounting ring at the position corresponding to the plate connection hole; the ring light source assembly 30 also includes multiple plate connectors that match the plate connection holes;
[0075] Each plate connector passes through its corresponding through hole and is fixedly connected to the corresponding plate connection hole.
[0076] For example, in this embodiment, the plate connection hole is a threaded hole, and the plate connector is a screw that matches the plate connection hole.
[0077] More specifically, the sphere integrating light source assembly 20 also includes a pressure ring 23 and multiple connectors, and the bottom of the light source mounting groove 2010 is provided with multiple fixing holes that match the connectors;
[0078] The bottom edge of the reflector 22 extends outward to form an annular mounting portion, and a connecting through hole is provided through the mounting portion at the position corresponding to the fixing hole. The pressure ring 23 is provided with a mounting hole at the position corresponding to the connecting through hole.
[0079] The connector passes through the mounting hole and the connecting through hole in sequence and is fixedly connected to the fixing hole. The reflector 22 is tightly installed in the light source mounting groove 2010 by the pressure ring 23.
[0080] For example, in this embodiment, the fixing hole is a threaded hole, and the connector is a screw that matches the connecting hole of the plate.
[0081] More specifically, the distance between the spherical integrating light source 21 and the first annular light source 31 is 30±5mm;
[0082] The first ring light source 31, the second ring light source 32, and the third ring light source 33 are arranged at equal intervals along the light emission direction of the spherical integrating light source assembly 20.
[0083] For example, in this embodiment, the first ring light source 31, the second ring light source 32 and the third ring light source 33 are all LED light boards. The outer diameter of the first ring light source 31 is 75mm, the outer diameter of the second ring light source 32 is 100mm, and the outer diameter of the first ring light source 31 and the outer diameter of the spherical integrating light source 21 are the same, both being 120mm.
[0084] It should be noted that, in this embodiment, the inner diameter of the light-emitting through-hole 2012 needs to be larger than the inner diameter of the top opening of the light-emitting channel 341, which is beneficial to increasing the light transmission of the spherical integrating light source.
[0085] In summary, the lens inspection device proposed in this embodiment, equipped with a combined light source, can be effectively applied to the inspection of multi-layer lenses. Furthermore, the combination of multiple ring light sources can be adjusted to match the inspection requirements of different lens layers, greatly improving the flexibility of the inspection.
[0086] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A combined light source, characterized in that, It includes a spherical integrating light source assembly (20) and a ring light source assembly (30); The ring light source assembly (30) includes a diffuser plate (34) and a plurality of ring light sources arranged around the diffuser plate (34); a frustum-shaped light emission channel (341) is provided through the middle of the diffuser plate (34), and the inner diameter of the light emission channel (341) increases sequentially along the light emission direction of the spherical integrating light source assembly (20); the plurality of ring light sources are arranged at intervals along the light emission direction of the spherical integrating light source assembly (20). The light emitted by the spherical integrating light source assembly (20) is directed onto the surface of the workpiece (100) to be inspected through the light output channel (341); the light emitted by the ring light source passes through the diffuser plate (34) into the light output channel (341) and is directed onto the surface of the workpiece (100) through the light output channel (341).
2. The combined light source according to claim 1, characterized in that, The sphere integrating light source assembly (20) includes a sphere integrating base (201), the top of which is recessed to form a light source mounting groove (2010), and the bottom of the light source mounting groove is provided with an annular groove (2011), in which a sphere integrating light source (21) is installed. The light source mounting slot (2010) is also fixedly provided with a reflector (22) for covering the spherical integrating light source (21), and the inner surface of the reflector (22) is coated with a diffuse reflection coating; a shooting window (221) is provided at the top center of the reflector (22).
3. A combined light source according to claim 2, characterized in that, A light-emitting through hole (2012) is provided through the center of the bottom of the light source mounting groove (2010), and the top opening of the light-emitting channel (341) is set directly opposite the light-emitting through hole (2012). The shooting window (221) and the light-emitting aperture (2012) are both circular holes, and the reflector (22) is hemispherical; The central axis of the shooting window (221), the central axis of the light-emitting aperture (2012), the central axis of the reflector (22), and the central axis of the light-emitting channel (341) are on the same straight line.
4. A combined light source according to claim 2, characterized in that, The plurality of ring light sources include a first ring light source (31), a second ring light source (32) and a third ring light source (33) arranged sequentially along the light output direction of the spherical integrating light source assembly (20); The ring light source assembly (30) also includes a mounting housing, which includes a main body (301), a main body (302), a main body (303), and a perimeter (304); The top of the first main body (301) is snapped and fixedly connected to the bottom of the spherical integrator base (201), and the bottom of the first main body (301) is snapped and fixedly connected to the top of the second main body (302). The first main body (301) and the second main body (302) form a first mounting cavity for fixing the first annular light source (31). The bottom of the second main body (302) and the top of the third main body (303) are snapped together and fixedly connected. The second main body (302) and the third main body (303) form a second mounting cavity for fixing and installing the second ring light source (32). The bottom of the main body (303) and the top of the periphery (304) are snapped together and fixedly connected. The main body (303) and the periphery (304) form a third mounting cavity for fixing the third annular light source (33).
5. A combined light source according to claim 4, characterized in that, The bottom of the perimeter (304) is provided with a plurality of plate connection holes; the bottom edge of the diffuser plate (34) extends outward to form a mounting ring, and a through hole is provided on the mounting ring corresponding to the position of the plate connection hole; the ring light source assembly (30) also includes a plurality of plate connectors that match the plate connection holes; Each of the plate connectors passes through the corresponding through hole and is fixedly connected to the corresponding plate connection hole.
6. A combined light source according to claim 2, characterized in that, The sphere integrating light source assembly (20) also includes a pressure ring (23) and multiple connectors. The bottom of the light source mounting groove (2010) is provided with multiple fixing holes that match the connectors. The bottom edge of the reflector (22) extends outward to form an annular mounting portion, and the mounting portion has a through hole corresponding to the position of the fixing hole. The pressure ring (23) has a mounting hole corresponding to the position of the through hole. The connector passes through the mounting hole and the connecting through hole in sequence and is fixedly connected to the fixing hole. The reflector (22) is tightly installed in the light source mounting groove (2010) by the pressure ring (23).
7. A combined light source according to claim 4, characterized in that, The distance between the spherical integrating light source (21) and the first annular light source (31) is 30±5mm; The first ring light source (31), the second ring light source (32) and the third ring light source (33) are arranged at equal intervals along the light emission direction of the spherical integrating light source assembly (20).
8. A combined light source according to claim 7, characterized in that, The outer diameter of the first ring light source (31) and the outer diameter of the spherical integrating light source (21) are the same, both being 120 mm.
9. A combined light source according to claim 3, characterized in that, The inner diameter of the light-emitting through-hole (2012) is larger than the inner diameter of the top opening of the light-emitting channel (341).
10. A lens detection device, comprising an imaging component (10) and an auxiliary light source, characterized in that, The auxiliary light source is a combined light source as described in any one of claims 1-9; The lens (12) of the shooting component (10) is positioned directly opposite the shooting window (221) of the spherical integrator light source component (20).