High-brightness annular light source
By designing light emitting units and fill light units in the ring light source, the problem that existing ring light sources are difficult to meet the local brightness detection needs, and high-brightness lighting in key areas of the workpiece is realized, which improves the detection effect.
Patent Information
- Application Number
- CN202421297812.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The existing annular light source can only illuminate a narrow range on the workpiece, and the illumination area is generally uniform in illumination, which is difficult to meet the needs of local highlight detection, resulting in poor detection results.
A high-bright annular light source is designed, including a light emitting unit and a fill light unit. The light emitting unit is composed of a diffusion plate and a plurality of first lamp beads, which are arranged around the circumference array of the detection holes, and light rays are emitting to the detection holes through the diffusion plate. The fill light unit is composed of a plurality of second lamp beads, and light is reflected to the detection hole through the inclined reflective fill light surface, providing local bright illumination.
Through the combination of light emitting unit and fill light unit, the key areas of the workpiece are better illuminated, providing better high-bright lighting effects, and improving visual inspection effects.
Smart Images
Figure CN222578033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of light sources, in particular to a high-brightness annular light source. Background Art
[0002] The existing annular light source includes a shell and an annular light-emitting unit. The shell has a detection hole for a camera to detect a workpiece. The annular light-emitting unit generally emits light obliquely toward the detection hole, thereby illuminating the periphery of the workpiece.
[0003] The prior art has the following technical defects: the annular light-emitting unit can only illuminate a narrow range on the workpiece, and the illuminated area generally has uniform illumination, which makes it difficult to meet the needs of local highlight detection, resulting in poor detection effect.
[0004] In view of this, a high-brightness ring light source is designed to provide better lighting effects and improve detection effects.
[0005] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Utility Model Content
[0006] The utility model provides a high-brightness annular light source, which can be helpful in providing a better lighting effect to improve the detection effect.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A high-brightness ring light source, comprising:
[0009] The housing has a detection hole for the camera to detect the workpiece;
[0010] A light-emitting unit, comprising a diffusion plate and M first lamp beads, M≥3; the M first lamp beads are arranged in a circular array around the detection hole, and the light emitted by the first lamp beads passes through the diffusion plate and then radiates toward the detection hole;
[0011] The fill light unit includes N second lamp beads, N≥3; the N second lamp beads are arranged in a circular array around the detection hole, and the shell is provided with an inclined reflective fill light surface to reflect the light of the second lamp beads toward the detection hole.
[0012] Optionally, the light emitting unit is located between the fill light unit and the detection hole.
[0013] Optionally, the light-emitting unit further comprises a reflective vertical plate and a circuit board, and the circuit board is mounted on the lateral supporting portion of the housing;
[0014] The reflective vertical plate, the circuit board and the diffusion plate form an annular space, and the first lamp bead is located in the annular space.
[0015] Optionally, the diffuser plate is curved in an arc shape, and a cross section of the annular space is fan-shaped.
[0016] Optionally, a reflective mirror surface is provided on the reflective vertical plate, and the reflective mirror surface is a side surface close to the first lamp bead.
[0017] Optionally, the housing further has a vertical surrounding portion, and the vertical surrounding portion surrounds the central axis to form the detection hole, and the vertical surrounding portion is fixedly connected to the horizontal supporting portion;
[0018] The reflective fill-light surface is located on the vertical surrounding portion, the second lamp bead is installed on the circuit board, and the reflective fill-light surface is located directly above the lamp bead.
[0019] Optionally, a cooling circuit is provided in the lateral support portion, and the cooling circuit is connected to a cold water supply device through a water inlet pipe.
[0020] Optionally, the high-brightness annular light source further includes a water outlet pipe, and the water outlet pipe is connected to the cooling circuit.
[0021] Optionally, the fill light unit further includes a condenser lens, and the condenser lens is located between the reflective fill light surface and the second lamp bead.
[0022] Optionally, each of the second lamp beads is correspondingly provided with a focusing lens, and the focusing lens is a convex lens.
[0023] Compared with the prior art, the utility model has the following beneficial effects:
[0024] The high-brightness ring light source provided by the utility model illuminates the periphery of the workpiece in the detection hole through the light-emitting unit, and then the light emitted by the fill-light unit is used to fill-in the workpiece through the inclined reflected fill-light surface, so that the key areas of the workpiece are better illuminated, and a better high-brightness lighting effect can be provided for the workpiece, which is beneficial to improving the subsequent visual inspection effect.
[0025] The present invention has other characteristics and advantages, which will be apparent from the accompanying drawings and subsequent specific embodiments incorporated herein, or will be described in detail in the accompanying drawings and subsequent specific embodiments incorporated herein, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of a high-brightness annular light source provided by an embodiment of the utility model;
[0028] Figure 2 It is a top view schematic diagram of a high-brightness annular light source provided by an embodiment of the utility model.
[0029] Figure numerals: 1. Shell; 101. Detection hole; 102. Reflective fill light surface; 11. Horizontal supporting portion; 111. Water inlet pipe; 112. Water outlet pipe; 12. Vertical surrounding portion; 2. Light-emitting unit; 21. Diffuser plate; 22. First lamp bead; 23. Reflective vertical plate; 24. Circuit board; 3. Fill light unit; 31. Second lamp bead; 32. Focusing lens; 231. Reflective mirror surface. DETAILED DESCRIPTION
[0030] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.
[0031] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.
[0032] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.
[0033] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.
[0034] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.
[0035] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.
[0036] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.
[0037] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0038] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0039] In view of the defects of the existing ring light sources, the applicant has actively conducted research and innovation based on many years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of academic theories, in the hope of creating a technology that can solve the defects in the existing technology and make the ring light source more practical. After continuous research and design, and repeated trial production and improvement, the present utility model with real practical value was finally created.
[0040] Please refer to Figure 1 and Figure 2 The embodiment of the utility model provides a high-brightness ring light source, which can provide better lighting for the workpiece.
[0041] The high brightness annular light source includes: a housing 1, which has a supporting effect and has a detection hole 101 for the camera to detect the workpiece; the workpiece is generally transported to the set detection position along the direction of the detection hole 101 for detection. The light-emitting unit 2 includes a diffusion plate 21 and M first lamp beads 22, the M first lamp beads 22 are arranged in a circular array around the detection hole 101, and the light emitted by the first lamp beads 22 is emitted to the detection hole 101 after passing through the diffusion plate 21; the fill light unit 3 includes N second lamp beads 31, the N second lamp beads 31 are arranged in a circular array around the detection hole 101, and the housing 1 is provided with an inclined reflective fill light surface 102 to reflect the light of the second lamp beads 31 to the detection hole 101. M≥3, and N≥3.
[0042] In this embodiment, M first lamp beads 22 emit light, and the light is evenly emitted to the workpiece located in the detection hole 101 through the diffuser plate 21, illuminating the periphery of the workpiece, and the illuminated area is circular. At this time, the light emitted by the second lamp bead 31 is reflected to the outer column of the workpiece through the reflective fill light surface 102, thereby further illuminating the local area of the periphery of the workpiece, providing a better lighting effect for the workpiece. It should be supplemented that the improvement of the lighting effect is conducive to improving the subsequent visual inspection effect.
[0043] It should also be noted that the light emitted by the first lamp bead 22 in the light-emitting unit 2 can achieve a highly uniform shadowless annular light source illumination effect after passing through the diffuser 21, and then cooperate with the fill light of the fill light unit 3 to achieve a high-brightness annular illumination effect. Preferably, the illumination area of the fill light unit 3 and the illumination area of the light-emitting unit 2 at least partially overlap, and the illumination area here refers to the area where the workpiece is illuminated.
[0044] Optionally, the light emitting unit 2 is located between the fill light unit 3 and the detection hole 101 to avoid interference or light blocking.
[0045] Optionally, the light-emitting unit 2 further includes a reflective plate 23 and a circuit board 24, wherein the circuit board 24 is mounted on the lateral support portion 11 of the housing 1; the reflective plate 23, the circuit board 24 and the diffuser 21 enclose an annular space, which surrounds the detection hole 101, and the first lamp bead 22 is located in the annular space. The reflective plate 23 has a certain reflective effect, and reflects the light emitted by the first lamp bead 22 to the diffuser 21 and passes through the diffuser 21, thereby improving the lighting effect.
[0046] Optionally, the diffuser plate 21 is curved in an arc shape, and the cross section of the annular space is fan-shaped. The curved diffuser plate 21 can expand the range of light scattering.
[0047] Optionally, a reflective mirror surface 231 is provided on the reflective vertical plate 23, and the reflective mirror surface 231 is the side surface close to the first lamp bead 22. The provision of the reflective mirror surface 231 further improves the light output effect, so that the illumination irradiated to the periphery of the workpiece is improved to a certain extent.
[0048] Optionally, the housing 1 further has a vertical surrounding portion 12, and the vertical surrounding portion 12 surrounds the central axis to form a detection hole 101, where the central axis is a set center line, and the set center line coincides with the center line of the detection hole 101. In addition, the vertical surrounding portion 12 is fixedly connected to the horizontal support portion 11; the reflective fill light surface 102 is located on the vertical surrounding portion 12, the second lamp bead 31 is installed on the circuit board 24, and the reflective fill light surface 102 is located directly above the lamp bead. Figure 1 As shown, the light emitting unit 2 will not block the light emitted by the fill light unit 3; in addition, the inclination angle of the reflective fill light surface 102 can be specifically set according to actual needs.
[0049] Optionally, a cooling circuit is provided in the transverse support portion 11, and the cooling circuit is connected to a cold water supply device through a water inlet pipe 111. Specifically, the transverse support portion 11 constitutes a water-cooled radiator, which can effectively cool the circuit board 24, thereby effectively solving the problem of excessive heating temperature of the light-emitting unit 2 and the fill light unit 3, and facilitating the assembly of light-emitting units 2 and fill light units 3 with greater power.
[0050] Optionally, the high-brightness annular light source further includes a water outlet pipe 112 , and the water outlet pipe 112 is connected to the cooling circuit.
[0051] Optionally, the fill light unit 3 further includes a condenser lens 32, and the condenser lens 32 is located between the reflective fill light surface 102 and the second lamp bead 31. Specifically, the arrangement of the condenser lens 32 can further improve the light intensity and better illuminate the workpiece.
[0052] Optionally, each second lamp bead 31 is provided with a corresponding condenser lens 32 , and the condenser lens 32 is a convex lens.
[0053] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.
Claims
1. A high brightness ring light source, characterized in that: include: The housing (1) has a detection hole (101) for a camera to detect a workpiece; A light-emitting unit (2) comprising a diffusion plate (21) and M first lamp beads (22), M≥3; the M first lamp beads (22) are arranged in a circular array around the detection hole (101), and light emitted by the first lamp beads (22) passes through the diffusion plate (21) and then radiates toward the detection hole (101); The fill light unit (3) comprises N second lamp beads (31), N≥3; the N second lamp beads (31) are arranged in a circular array around the detection hole (101), and an inclined reflective fill light surface (102) is provided on the housing (1) to reflect light from the second lamp beads (31) toward the detection hole (101).
2. The high brightness ring light source according to claim 1, characterized in that: The light emitting unit (2) is located between the fill light unit (3) and the detection hole (101).
3. The high brightness ring light source according to claim 1, characterized in that: The light-emitting unit (2) further comprises a reflective vertical plate (23) and a circuit board (24), wherein the circuit board (24) is mounted on the lateral supporting portion (11) of the housing (1); The reflective vertical plate (23), the circuit board (24) and the diffusion plate (21) enclose an annular space, and the first lamp bead (22) is located in the annular space.
4. The high brightness annular light source according to claim 3, characterized in that: The diffusion plate (21) is curved in an arc shape, and the cross section of the annular space is fan-shaped.
5. The high brightness ring light source according to claim 3, characterized in that: The reflective vertical plate (23) is provided with a reflective mirror surface (231), and the reflective mirror surface (231) is located on the side close to the first lamp bead (22).
6. The high brightness annular light source according to claim 3, characterized in that: The housing (1) further comprises a vertical surrounding portion (12), and the vertical surrounding portion (12) surrounds the central axis to form the detection hole (101), and the vertical surrounding portion (12) is fixedly connected to the horizontal supporting portion (11); The reflective fill-light surface (102) is located on the vertical surrounding portion (12), the second lamp bead (31) is mounted on the circuit board (24), and the reflective fill-light surface (102) is located directly above the lamp bead.
7. The high brightness annular light source according to claim 3, characterized in that: A cooling circuit is provided in the transverse support portion (11), and the cooling circuit is connected to a cold water supply device via a water inlet pipe (111).
8. The high brightness annular light source according to claim 7, characterized in that: It also includes a water outlet pipeline (112), wherein the water outlet pipeline (112) is connected to the cooling circuit.
9. The high brightness annular light source according to claim 7, characterized in that: The fill light unit (3) further comprises a condenser lens (32), and the condenser lens (32) is located between the reflective fill light surface (102) and the second lamp bead (31).
10. The high brightness annular light source according to claim 9, characterized in that: Each of the second lamp beads (31) is correspondingly provided with a condenser lens (32), and the condenser lens (32) is a convex lens.