Light source and visual inspection module

Abstract

The utility model relates to the technical field of light source structures, and discloses a light source and visual inspection module which comprises a supporting cylinder, a light-emitting lamp panel, a diaphragm and a condensing lens assembly, and the aperture of the diaphragm is adjustable; the diaphragm and the condensing lens assembly are both installed in the supporting cylinder, the light emitting lamp panel is installed at one end of the supporting cylinder so as to emit light to one side of the diaphragm, and the condensing lens assembly is installed on the side, away from the light emitting lamp panel, of the diaphragm; the center line of the supporting cylinder, the center line of the diaphragm and the center line of the condensing lens assembly coincide with one another. According to the light source and the visual detection module, the light emitting angle can be changed through the diaphragm, and the detection requirement of high-reflection workpieces can be met.

Description

Technical Field

[0001] This utility model relates to the field of light source structure technology, and in particular to a light source and a visual inspection module. Background Technology

[0002] Currently, the market demands increasingly stringent product quality standards. During the manufacturing process, products need to be inspected from multiple aspects to eliminate defective items and improve overall quality. Based on these objectives, product defect detection technology is widely used across various industries. The light source, as a key component of the detection system, significantly impacts the quality of inspection. Among the parameters of the light source, the incident light angle refers to the angle at which light strikes the workpiece surface. Highly reflective workpieces have stringent requirements for the incident light angle during defect detection, and existing light sources generally cannot meet these needs. Therefore, it is necessary to design a new light source and vision inspection module.

[0003] 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

[0004] This invention provides a light source and a visual inspection module that can change the light output angle through an aperture, thereby meeting the inspection needs of highly reflective workpieces.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A light source includes a support cylinder, a light-emitting plate, an aperture, and a focusing lens assembly, wherein the aperture of the aperture is adjustable;

[0007] Both the aperture and the condenser lens assembly are installed in the support cylinder. The light-emitting lamp plate is installed at one end of the support cylinder to emit light towards one side of the aperture, and the condenser lens assembly is installed on the side of the aperture away from the light-emitting lamp plate.

[0008] The centerline of the support cylinder, the centerline of the aperture, and the centerline of the condenser lens assembly coincide with each other.

[0009] Optionally, a diffuser plate is also installed in the support cylinder, and the diffuser plate is located between the aperture and the light-emitting lamp plate.

[0010] Optionally, a first stepped hole and a first mounting threaded hole are formed in sequence in the support cylinder;

[0011] The aperture is installed in the first stepped hole, and an annular clamping ring for pressing and fixing the aperture is installed in the first mounting threaded hole.

[0012] Optionally, the diffuser plate is fitted to the stepped surface of the first stepped hole;

[0013] The diffuser plate and the annular clamping ring respectively clamp the opposite sides of the aperture.

[0014] Optionally, the focusing lens assembly includes a first positioning ring, a first lens, a second positioning ring, a second lens, and a third positioning ring arranged sequentially in a direction away from the light-emitting lamp plate;

[0015] The first positioning ring and the second positioning ring clamp the first lens, the second positioning ring and the third positioning ring clamp the second lens, and the second positioning ring is located on the side of the first positioning ring away from the aperture.

[0016] Optionally, the support cylinder further includes a second stepped hole communicating with the first mounting threaded hole;

[0017] The second stepped hole includes a first hole segment, a second hole segment, a third hole segment, and a second mounting threaded hole segment, wherein the first hole segment, the second hole segment, the third hole segment, and the second mounting threaded hole segment are sequentially connected;

[0018] The diameter of the second hole segment is larger than the diameter of the first hole segment, the diameter of the third hole segment is larger than the diameter of the second hole segment, and the diameter of the second mounting threaded hole segment is larger than the diameter of the third hole segment;

[0019] The first positioning ring is pressed against the first positioning step surface between the first hole segment and the second hole segment, the second positioning ring is pressed against the second positioning step surface between the second hole segment and the third hole segment, and the third positioning ring is screwed into the second mounting threaded hole segment.

[0020] Optionally, the support cylinder includes a first cylinder section and a second cylinder section, the first cylinder section forming the first stepped hole and the first mounting threaded hole, and the second cylinder section forming a second stepped hole for mounting the condenser lens assembly;

[0021] The first cylindrical section and the second cylindrical section are detachably connected.

[0022] Optionally, the light-emitting board includes a circuit board and an array of LED beads mounted on the circuit board, the LED beads being arranged in a circumferential array around the center line of the support cylinder.

[0023] Optionally, the light source also includes a heat dissipation device, and the light-emitting plate is mounted on the heat dissipation device.

[0024] A visual inspection module includes a light source as described in any of the preceding claims.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The light source and vision inspection module provided by this utility model emit light from the light-emitting board, which passes through the aperture and then shines on the condenser lens assembly. Finally, the light passes through the condenser lens assembly and shines on the highly reflective workpiece. The user can adjust the aperture of the aperture to adjust the angle of the light that finally shines on the highly reflective workpiece, so that the angle of the light shining on the workpiece meets the inspection requirements of the highly reflective workpiece, thereby accurately detecting whether the surface of the highly reflective workpiece is qualified.

[0027] 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

[0028] 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.

[0029] Figure 1 This is a three-dimensional schematic diagram of the light source provided in an embodiment of the present utility model;

[0030] Figure 2 This is a side view of the light source provided in an embodiment of the present invention;

[0031] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure of the light source.

[0032] Reference numerals in the attached drawings: 1. Support cylinder; 101. First cylinder section; 102. Second cylinder section; 11. First stepped hole; 12. First mounting threaded hole; 13. First hole section; 14. Second hole section; 15. Third hole section; 16. Second mounting threaded hole section; 2. Light output plate; 3. Aperture; 4. Condensing lens assembly; 41. First positioning ring; 42. First lens; 43. Second positioning ring; 44. Second lens; 45. Third positioning ring; 7. Heat dissipation device. 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 deficiencies of existing light sources, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a light source that can overcome the shortcomings of existing technologies and make the light source more practical for inspecting highly reflective workpieces. After continuous research, design, and repeated prototype production and improvements, this utility model with real practical value has finally been created.

[0044] Please refer to Figures 1 to 3 This utility model provides a light source, including a support cylinder 1, a light-emitting plate 2, an aperture 3, and a condenser lens assembly 4. The aperture of the aperture 3 is adjustable. The support cylinder 1 provides support and positioning for the light-emitting plate 2, the aperture 3, and the condenser lens assembly 4.

[0045] In this embodiment, both the aperture 3 and the condenser lens assembly 4 are installed in the inner hole of the support cylinder 1. The light-emitting plate 2 is installed at one end of the support cylinder 1 to emit light towards one side of the aperture 3, and the condenser lens assembly 4 is installed on the side of the aperture 3 away from the light-emitting plate 2; that is, the light-emitting plate 2, the aperture 3, and the condenser lens assembly 4 are arranged sequentially, as shown below. Figure 3 As shown, the center lines of the support cylinder 1, the aperture 3, and the condenser lens assembly 4 coincide, so that the light emitted from the light-emitting plate 2 can pass through the aperture 3 and the condenser lens assembly 4 in sequence, and finally be directed onto the surface of the highly reflective workpiece.

[0046] It should be noted that highly reflective workpieces refer to workpieces with high surface reflectivity. The reflectivity of highly reflective workpieces is usually above 70%, and in extreme cases (such as mirror metal or coated surfaces), it can reach 90%-98%.

[0047] In this embodiment, the light emitted from the light-emitting plate 2 passes through the aperture 3 and then shines onto the condenser lens assembly 4. Finally, it shines onto the highly reflective workpiece through the condenser lens assembly 4. The user can adjust the aperture of the aperture 3 to adjust the angle of the light that finally shines onto the highly reflective workpiece, so that the angle of the light shining onto the workpiece meets the detection requirements of the highly reflective workpiece, thereby accurately detecting whether the surface of the highly reflective workpiece is qualified.

[0048] In this embodiment, the aperture of the aperture 3 can be adjusted to filter out light rays with low incident angles at the edges, thereby adjusting the incident angle and better meeting the actual detection needs. It should be noted that the aperture 3 is a component in the prior art, therefore its specific structure will not be described in detail. In this embodiment, the continuously adjustable aperture range of the aperture 3 is 5-20mm. Of course, different specifications of aperture 3 can be selected according to actual needs.

[0049] Optionally, a diffuser plate is also installed in the support cylinder 1, located between the aperture 3 and the light-emitting plate 2. In this embodiment, the light is diffused by the diffuser plate, changing the original light emission direction. Then, the light is adjusted and suppressed by the aperture 3, allowing the useful light to pass through the aperture 3. Finally, the useful light is oriented after the light direction is corrected by the focusing lens assembly 4 and then directed onto the surface of the highly reflective workpiece.

[0050] Optionally, a first stepped hole 11 and a first threaded mounting hole 12 are formed in sequence in the support cylinder 1; the aperture 3 is installed in the first stepped hole 11, and an annular clamping ring for pressing and fixing the aperture 3 is installed in the first threaded mounting hole 12. In this embodiment, the outer shell of the aperture 3 is pressed and fixed by the annular clamping ring, thereby ensuring that the aperture 3 can be installed in a suitable position.

[0051] Optionally, the diffuser plate is fitted to the stepped surface of the first stepped hole 11; the diffuser plate and the annular clamping ring clamp the opposite sides of the aperture 3 respectively, and at this time the stepped surface of the first stepped hole 11 and the aperture 3 clamp and fix the diffuser plate. In this installation structure, only one annular clamping ring needs to be fixed to fix the diffuser plate and the aperture 3 at the same time, further simplifying the installation.

[0052] Optionally, the focusing lens assembly 4 includes a first positioning ring 41, a first lens 42, a second positioning ring 43, a second lens 44, and a third positioning ring 45 arranged sequentially in a direction away from the light-emitting lamp plate 2. The first positioning ring 41 and the second positioning ring 43 clamp the first lens 42, and the second positioning ring 43 and the third positioning ring 45 clamp the second lens 44. The second positioning ring 43 is located on the side of the first positioning ring 41 away from the aperture 3. In this embodiment, both the first lens 42 and the second lens 44 are convex lenses, which can further correct the direction of light emission and improve the focusing effect, thereby meeting the needs of actual detection.

[0053] Optionally, the support cylinder 1 further includes a second stepped hole communicating with the first mounting threaded hole 12; the second stepped hole includes a first hole segment 13, a second hole segment 14, a third hole segment 15, and a second mounting threaded hole segment 16, which are sequentially connected; the diameter of the second hole segment 14 is larger than the diameter of the first hole segment 13, the diameter of the third hole segment 15 is larger than the diameter of the second hole segment 14, and the diameter of the second mounting threaded hole segment 16 is larger than the diameter of the third hole segment 15; the first positioning ring 41 is pressed against the first positioning stepped surface between the first hole segment 13 and the second hole segment 14, the second positioning ring 43 is pressed against the second positioning stepped surface between the second hole segment 14 and the third hole segment 15, and the third positioning ring 45 is screwed into the second mounting threaded hole segment 16.

[0054] In this embodiment, simply tightening the third positioning ring 45 is sufficient to simultaneously fix the first positioning ring 41, the first lens 42, the second positioning ring 43, and the second lens 44. Generally, during installation, the larger opening of the second stepped hole faces upwards, allowing the first positioning ring 41, the first lens 42, the second positioning ring 43, and the second lens 44 to gradually slide into the second stepped hole and complete positioning. Finally, tightening the third positioning ring 45 is sufficient.

[0055] The outer periphery of the third positioning ring 45 is provided with external threads that match the second mounting threaded hole section 16.

[0056] Optionally, the support cylinder 1 includes a first cylinder section 101 and a second cylinder section 102. The first cylinder section 101 forms a first stepped hole 11 and a first mounting threaded hole 12, and the second cylinder section 102 forms a second stepped hole for mounting the condenser lens assembly 4. The first cylinder section 101 and the second cylinder section 102 are detachably connected, making it easier for the aperture 3 to be installed into the first cylinder section 101, that is, the aperture 3 can enter the first cylinder section 101 without passing through the second cylinder section 102.

[0057] Optionally, the light-emitting board 2 includes a circuit board and an array of LED beads mounted on the circuit board, with the LED beads arranged in a circumferential array around the center line of the support cylinder 1.

[0058] Optionally, the light source also includes a heat dissipation device 7, and the light-emitting plate 2 is mounted on the heat dissipation device 7.

[0059] Example 2

[0060] This embodiment discloses a visual detection module, including a light source as described in any of the preceding embodiments.

[0061] 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 light source, characterized by The application relates to a light-emitting lamp, which comprises a supporting cylinder (1), a light-emitting lamp plate (2), an aperture diaphragm (3) and a condensing lens assembly (4), wherein the aperture of the aperture diaphragm (3) is adjustable. The aperture diaphragm (3) and the condensing lens assembly (4) are both installed in the supporting cylinder (1), the light-emitting lamp plate (2) is installed at one end of the supporting cylinder (1) to emit light to one side of the aperture diaphragm (3), and the condensing lens assembly (4) is installed at the side of the aperture diaphragm (3) far away from the light-emitting lamp plate (2). The center line of the supporting cylinder (1), the center line of the aperture diaphragm (3) and the center line of the condensing lens assembly (4) coincide with each other.

2. The light source of claim 1, wherein A diffusion plate is also installed in the supporting cylinder (1), and the diffusion plate is located between the aperture diaphragm (3) and the light-emitting lamp plate (2).

3. The light source of claim 2, wherein A first stepped hole (11) and a first mounting threaded hole (12) are sequentially communicated in the supporting cylinder (1). The aperture diaphragm (3) is installed in the first stepped hole (11), and an annular compression ring for compressing and fixing the aperture diaphragm (3) is installed in the first mounting threaded hole (12).

4. The light source of claim 3, wherein The diffusion plate is attached to the stepped surface of the first stepped hole (11). The diffusion plate and the annular compression ring clamp the opposite sides of the aperture diaphragm (3) respectively.

5. The light source of claim 3, wherein The condensing lens assembly (4) comprises a first positioning ring (41), a first lens (42), a second positioning ring (43), a second lens (44) and a third positioning ring (45) which are sequentially arranged in the direction far away from the light-emitting lamp plate (2). The first positioning ring (41) and the second positioning ring (43) clamp the first lens (42), the second positioning ring (43) and the third positioning ring (45) clamp the second lens (44), and the second positioning ring (43) is located at the side of the first positioning ring (41) far away from the aperture diaphragm (3).

6. The light source of claim 5, wherein, The supporting cylinder (1) further comprises a second stepped hole which communicates with the first mounting threaded hole (12). The second stepped hole comprises a first hole section (13), a second hole section (14), a third hole section (15) and a second mounting threaded hole section (16), and the first hole section (13), the second hole section (14), the third hole section (15) and the second mounting threaded hole section (16) are sequentially communicated. The diameter of the second hole section (14) is greater than that of the first hole section (13), the diameter of the third hole section (15) is greater than that of the second hole section (14), and the diameter of the second mounting threaded hole section (16) is greater than that of the third hole section (15). The first positioning ring (41) is compressed on the first positioning stepped surface between the first hole section (13) and the second hole section (14), the second positioning ring (43) is compressed on the second positioning stepped surface between the second hole section (14) and the third hole section (15), and the third positioning ring (45) is screwed into the second mounting threaded hole section (16).

7. The light source of claim 3, wherein The support cylinder (1) comprises a first cylinder segment (101) and a second cylinder segment (102), the first cylinder segment (101) forms the first stepped hole (11) and the first mounting threaded hole (12), and the second cylinder segment (102) forms a second stepped hole for mounting the condenser lens assembly (4); The first cylinder segment (101) and the second cylinder segment (102) are detachably connected.

8. The light source of claim 1, wherein, The light-emitting lamp panel (2) comprises a circuit board and a lamp bead group mounted on the circuit board, and the lamp bead group is arranged in a circle around the center line of the support cylinder (1).

9. The light source of claim 1, wherein, Further comprising a heat dissipation device (7), and the light-emitting lamp panel (2) is mounted on the heat dissipation device (7).

10. A vision inspection module, characterized by, The light source comprises the light source as claimed in any one of claims 1 to 9.

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