Annular light source and detection device

Abstract

The utility model relates to the field of light source structures, and discloses an annular light source and a detection device. The annular lamp panel is mounted in the annular shell; the annular lamp panel comprises an annular circuit board and a plurality of lamp beads mounted on the annular circuit board, and the side surface of the annular circuit board is parallel to the center line of the detection hole; the annular eccentric lens is mounted on the light emitting side of the annular lamp panel; light emitted by the annular lamp panel penetrates through the annular eccentric lens and then obliquely and downwards irradiates the surface of a to-be-detected workpiece. According to the annular light source and the detection device, the installation steps can be effectively simplified, and the installation yield is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of light source structure especially relates to a ring light source and detection device. BACKGROUND

[0002] The ring light source is commonly used in machine vision detection and is widely used in various shooting and inspection occasions.

[0003] The current ring light source comprises a ring shell and a ring lamp panel, the ring lamp panel is spliced into a ring structure by a plurality of lamp panels that tilt downward to emit light, the assembly accuracy between the lamp panels is poor, and the position of the lamp panel needs to be adjusted multiple times during the assembly of the ring lamp panel, which increases the assembly difficulty and is not conducive to improving the assembly efficiency and yield.

[0004] Therefore, it is necessary to design a ring light source and detection device that can effectively simplify the installation steps and improve the installation yield.

[0005] The above information is given as background information only to assist with understanding the present disclosure, and does not establish or admit that any of the above is available as prior art with respect to the present disclosure. SUMMARY

[0006] The utility model provides a ring light source and detection device, can effectively simplify the installation step, improve installation yield.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A ring light source comprises:

[0009] A ring shell has a detection hole;

[0010] A ring lamp panel is installed in the ring shell; the ring lamp panel comprises a ring circuit board and a plurality of lamp beads installed on the ring circuit board, and the side surface of the ring circuit board is parallel to the center line of the detection hole;

[0011] A ring eccentric lens is installed on the light-emitting side of the ring lamp panel; the light emitted by the ring lamp panel passes through the ring eccentric lens and is inclined downward to irradiate on the surface of the workpiece to be detected.

[0012] Optionally, the lamp beads are arranged in a circumferential array around the center line of the detection hole, and the light-emitting optical axis of the lamp beads is perpendicular to the center line of the detection hole.

[0013] Optionally, the light entrance surface of the ring eccentric lens is arc-shaped, and the light exit surface of the ring eccentric lens is an inclined plane facing the workpiece.

[0014] Optionally, the light entrance surface comprises a first light entrance arc surface, a second light entrance arc surface and a third light entrance arc surface; the first light entrance arc surface, the second light entrance arc surface and the third light entrance arc surface are sequentially and continuously connected.

[0015] The second light entrance arc surface is a circular arc surface, and the center of the circular arc surface is lower than the light exit optical axis of the lamp bead.

[0016] Optionally, the annular shell comprises a bottom shell and a top shell, the annular lamp plate is installed between the top shell and the bottom shell, and the annular eccentric lens is installed between the top shell and the bottom shell.

[0017] The annular eccentric lens has a first horizontal surface for abutting the bottom surface of the top shell, and the annular eccentric lens also has a second horizontal surface for abutting the top surface of the bottom shell.

[0018] Optionally, the annular shell is formed with a mounting groove, the mounting groove comprises a mounting recess with a rectangular cross section and a light exit groove communicating with the mounting recess.

[0019] In the direction of the center line of the detection hole, the width of the mounting recess is greater than the width of the light exit groove; the annular circuit board is installed in the mounting recess, and the width of the annular circuit board is greater than the width of the light exit groove.

[0020] Optionally, the lamp bead at least partially extends into the light exit groove.

[0021] Optionally, the lamp bead is an LED lamp bead.

[0022] Optionally, an annular groove is formed on the bottom shell, and the annular groove constitutes part of the mounting recess.

[0023] A detection device comprises the annular light source according to any one of the above.

[0024] Compared with the prior art, the annular light source has the following beneficial effects:

[0025] The annular light source and the detection device provided by the utility model have the advantages that the side surface of the annular lamp plate is parallel to the center line of the detection hole, the side surface of the annular lamp plate does not need to be inclined, the inclination angle of the annular lamp plate is not difficult to control during installation, and the light emitted by the annular lamp plate is inclined downward on the surface of the workpiece to be detected after being focused by the annular eccentric lens.

[0026] The present application has other characteristics and advantages, which will be apparent from the accompanying drawings and the detailed description that follows, or will be set forth in the accompanying drawings and the detailed description that follows, which together serve to explain the specific principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0028] Figure 1 is a top view schematic diagram of the annular light source provided by the embodiment of the present application;

[0029] Figure 2 is Figure 1 is a L-L cross-sectional structure schematic diagram of the annular light source in the embodiment;

[0030] Figure 3 is Figure 2 is an enlarged schematic diagram of the annular light source at the A position in the embodiment;

[0031] Figure 4 is a three-dimensional schematic diagram of the annular light source provided by the embodiment of the present application;

[0032] Figure 5 is an exploded schematic diagram of the annular light source provided by the embodiment of the present application.

[0033] Reference signs: 1, annular shell; 101, detection hole; 102, mounting groove; 103, light outlet groove; 11, bottom shell; 12, top shell; 2, annular lamp plate; 21, annular circuit board; 22, lamp bead; 3, annular eccentric lens; 31, light inlet surface; 32, light outlet surface; 311, first light inlet arc surface; 312, second light inlet arc surface; 313, third light inlet arc surface; 33, first horizontal surface; 34, second horizontal surface. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings and the detailed description that follows, or will be set forth in the accompanying drawings and the detailed description that follows, which together serve to explain the specific principles of the present application.

[0035] The term "embodiment" is mentioned in this document means that the specific features, structures or characteristics described in connection with the embodiment can 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 this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0036] Unless otherwise defined, the meaning of technical terms used in this document is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this document is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0037] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this document generally represents that the associated objects before and after are a "or" logical relationship.

[0038] In this application, such as "first" and "second", the terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0039] In this application, without more limitation, the "includes", "contains", "has" or other similar expressions used in the sentence are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include the elements inherent in such process, method or product.

[0040] As the same understanding as in the "Guidelines for Examination", in this application, "greater than", "less than", "exceed" and other expressions are understood as not including the number; "above", "below", "within" and other expressions are understood as including the number. In addition, the meaning of "multiple" in the description of the embodiments of the present application is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly limited.

[0041] In the description of the embodiments of the present application, the spatially relative terms, such as "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship shown in the specific embodiment or the accompanying drawings, and are only used to facilitate the description of the specific embodiments of the present application or to facilitate the understanding of the reader, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0042] Unless otherwise expressly specified or limited, the terms "mount", "connect", "connection", "fixed", "set", and the like used in the description of the embodiments of the present application should be interpreted broadly. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral set; it can be a mechanical connection, or an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be a communication or interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0043] Embodiment one

[0044] In view of the defects of the existing annular light source, the applicant, based on years of rich practical experience and professional knowledge in designing and manufacturing such products, and with the application of theory, actively researches and innovates, in the hope of creating a technology that can solve the defects in the prior art, so that the annular light source is more practical. After continuous research, design, and repeated trial of samples and improvement, the present utility model is finally created, which has practical value.

[0045] Please refer to Figures 1 to 5 The embodiment of the present application provides an annular light source, which comprises an annular shell 1, an annular lamp panel 2 and an annular eccentric lens 3.

[0046] The annular shell 1 has a detection hole 101; the annular lamp panel 2 is installed in the annular shell 1; the annular lamp panel 2 comprises an annular circuit board 21 and a plurality of lamp beads 22 installed on the annular circuit board 21, and the side surface of the annular circuit board 21 is parallel to the center line of the detection hole 101; the annular eccentric lens 3 is installed on the light emitting side of the annular lamp panel 2; the light emitted by the annular lamp panel 2 passes through the annular eccentric lens 3 and is obliquely downward on the surface of the workpiece to be detected.

[0047] The side of the annular light board 2 in the embodiment is parallel to the center line of the detection hole 101, and the annular light board 2 horizontally emits light. The annular eccentric lens 3 plays a role of condensing light and making the light obliquely downward, so the side of the annular light board 2 does not need to be obliquely arranged, avoiding the situation that the oblique angle of the annular light board is not well controlled in the installation process, and making the installation of the annular light source more simple and convenient. In addition, the light emitted by the annular light board 2 is obliquely downward after being condensed, and is shot on the surface of the workpiece to be detected. The annular light source of the embodiment does not need to adjust the oblique angle of the light board for many times, but only needs to normally install the annular light board 2 in the annular shell 1, and install the annular eccentric lens 3 on the light-emitting side of the annular light board 2, which simplifies the installation steps of the annular light source, and is beneficial to improving the assembly efficiency and yield of the annular light source.

[0048] Optionally, the lamp beads 22 are arranged in a circumferential array around the center line of the detection hole 101, and the light-emitting optical axis of the lamp beads 22 is perpendicular to the center line of the detection hole 101, thereby being beneficial to improving the uniformity of light emission.

[0049] Optionally, the light-incident surface 31 of the annular eccentric lens 3 is arc-shaped, and the light-emitting surface 32 of the annular eccentric lens 3 is an oblique plane facing the workpiece. It should be noted that the annular light board 2 emits light to the light-incident surface 31, the light is deflected downward to the light-emitting surface 32, and finally passes through the light-emitting surface 32 to the surface of the workpiece. The light-incident surface 31 is arc-shaped, thereby playing a role of condensing light and making the light obliquely downward to the light-emitting surface.

[0050] In the embodiment, the light-incident surface 31 includes a first light-incident arc surface 311, a second light-incident arc surface 312, and a third light-incident arc surface 313; the first light-incident arc surface 311, the second light-incident arc surface 312, and the third light-incident arc surface 313 are sequentially and continuously connected; the second light-incident arc surface 312 is a circular arc surface, and the center of the circular arc surface is lower than the light-emitting optical axis of the lamp beads 22.

[0051] In the embodiment, the circular arc surface plays the most important role of condensing light. The arc-shaped bending curvature of the first light-incident arc surface 311, the second light-incident arc surface 312, and the third light-incident arc surface 313 can be set according to actual needs.

[0052] Optionally, the annular shell 1 includes a bottom shell 11 and a top shell 12, the annular light board 2 is installed between the top shell 12 and the bottom shell 11, and the annular eccentric lens 3 is installed between the top shell 12 and the bottom shell 11; the annular eccentric lens 3 has a first horizontal surface 33 for abutting the bottom surface of the top shell 12, and the annular eccentric lens 3 also has a second horizontal surface 34 for abutting the top surface of the bottom shell 11.

[0053] Specifically, the first horizontal surface 33 of the annular eccentric lens 3 abuts the bottom surface of the top shell 12, and the second horizontal surface 34 abuts the top surface of the bottom shell 11, making the installation of the annular eccentric lens 3 more simple, and further improving the installation efficiency of the annular light source.

[0054] Optionally, the annular housing 1 is formed with a mounting groove, the mounting groove comprising a mounting groove 102 with a rectangular cross section and a light outlet groove 103 communicating with the mounting groove 102; along the center line direction of the detection hole 101, the width of the mounting groove 102 is greater than the width of the light outlet groove 103; the annular circuit board 21 is mounted in the mounting groove 102, and the width of the annular circuit board 21 is greater than the width of the light outlet groove 103. Specifically, the mounting groove 102 can limit the annular circuit board 21, making the installation of the annular circuit board 21 more simple.

[0055] Optionally, the lamp beads 22 at least partially extend into the light outlet groove 103.

[0056] Optionally, the lamp beads 22 are LED lamp beads. LED lamp beads have the advantages of long service life, energy saving, and easy control.

[0057] Optionally, the bottom shell 11 is formed with an annular groove, the annular groove constituting part of the mounting groove 102. In the assembly process, the annular circuit board 21 can be placed in the annular groove first, and then the top shell 12 is assembled to the bottom shell 11, so that the annular circuit board 21 is easier to install.

[0058] Embodiment two

[0059] The embodiment provides a detection device comprising the annular light source according to any one of the above embodiments.

[0060] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the present application, they should not limit the patent protection scope of the present application. Any equivalent structure or equivalent process substitution or modification based on the essential concept of the present application, using the content described in the specification and drawings of the present application, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. An annular light source, characterized by, The application relates to a ring-shaped light source. The application comprises: a ring-shaped shell (1) with a detection hole (101); a ring-shaped lamp panel (2) installed in the ring-shaped shell (1); the ring-shaped lamp panel (2) comprises a ring-shaped circuit board (21) and a plurality of lamp beads (22) installed on the ring-shaped circuit board (21), and the side of the ring-shaped circuit board (21) is parallel to the center line of the detection hole (101); 2. Ring-shaped light source according to claim 1, characterized in that a ring-shaped eccentric lens (3) installed on the light-emitting side of the ring-shaped lamp panel (2); the light emitted by the ring-shaped lamp panel (2) is inclined downward on the surface of a workpiece to be detected after passing through the ring-shaped eccentric lens (3).

3. Ring-shaped light source according to claim 1, characterized in that The lamp beads (22) are arranged in a circumferential array around the center line of the detection hole (101), and the light-emitting optical axis of the lamp beads (22) is perpendicular to the center line of the detection hole (101).

4. Ring-shaped light source according to claim 3, characterized in that The light-incident surface (31) of the ring-shaped eccentric lens (3) is arc-shaped, and the light-emitting surface (32) of the ring-shaped eccentric lens (3) is an inclined plane facing the workpiece. The light-incident surface (31) comprises a first light-incident arc surface (311), a second light-incident arc surface (312) and a third light-incident arc surface (313); the first light-incident arc surface (311), the second light-incident arc surface (312) and the third light-incident arc surface (313) are sequentially and continuously connected; 5. Ring-shaped light source according to claim 1, characterized in that The second light-incident arc surface (312) is a circular arc surface, and the center of the circular arc surface is lower than the light-emitting optical axis of the lamp beads (22). The ring-shaped shell (1) comprises a bottom shell (11) and a top shell (12), the ring-shaped lamp panel (2) is installed between the top shell (12) and the bottom shell (11), and the ring-shaped eccentric lens (3) is installed between the top shell (12) and the bottom shell (11); 6. Ring-shaped light source according to claim 5, characterized in that The ring-shaped eccentric lens (3) has a first horizontal surface (33) used for abutting the bottom surface of the top shell (12), and the ring-shaped eccentric lens (3) also has a second horizontal surface (34) used for abutting the top surface of the bottom shell (11). The ring-shaped shell (1) is formed with a mounting groove, the mounting groove comprises a mounting recess (102) with a rectangular cross section and a light-emitting groove (103) communicating with the mounting recess (102); 7. Ring-shaped light source according to claim 6, characterized in that In the direction of the center line of the detection hole (101), the width of the mounting recess (102) is greater than the width of the light-emitting groove (103); the ring-shaped circuit board (21) is installed in the mounting recess (102), and the width of the ring-shaped circuit board (21) is greater than the width of the light-emitting groove (103).

8. Ring-shaped light source according to claim 2, characterized in that The lamp beads (22) at least partially extend into the light-emitting groove (103).

9. Ring-shaped light source according to claim 6, characterized in that The lamp beads (22) are LED lamp beads.

10. A detection device, characterized in that The bottom shell (11) is formed with a ring-shaped groove, and the ring-shaped groove constitutes part of the mounting recess (102). The application comprises the ring-shaped light source as claimed in any one of claims 1 to 9.

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