Hemispherical light source device and visual inspection device

Abstract

The utility model relates to the field of light source structures, and discloses a semispherical light source device and a visual inspection device, comprising a semispherical cover body, the inner spherical surface of the semispherical cover body is a fully reflecting surface; the uniform diffuser is provided with a hemispherical diffusion shell parallel to the inner side spherical surface, and the hemispherical diffusion shell is surrounded by the inner side spherical surface; the annular lamp panel is arranged between the inner side spherical surface and the hemispherical diffusion shell and used for emitting light rays to the inner side spherical surface, and the light rays penetrate through the hemispherical diffusion shell to be emitted to a workpiece after being reflected by the inner side spherical surface. According to the hemispherical light source device, the assembly of the hemispherical light source device can be simplified, and the light emitting uniformity is improved.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of machine vision technology, the application scene of machine vision system will be more and more. As one of the core components of machine vision system, light source device has also developed rapidly.

[0003] The current hemispherical light source generally has multiple circuit boards installed in the hemispherical shell, and the multiple circuit boards are combined to form a hemispherical structure, and a plurality of lamp beads are arranged on the circuit boards in an array. The assembly and splicing of the multiple circuit boards into a hemispherical shape are relatively complex, and the light uniformity is poor due to the splicing skew, which is not conducive to improving the light uniformity of the hemispherical light source.

[0004] Therefore, it is necessary to design a hemispherical light source device and visual inspection device that can simplify the assembly of the hemispherical light source device and improve the light uniformity.

[0005] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or acknowledge whether any of the above content can be used as prior art with respect to the present disclosure. UTILITY MODEL CONTENT

[0006] The utility model provides a kind of hemispherical light source device and visual inspection device, can simplify the assembly of hemispherical light source device, and can be conducive to improving the light uniformity.

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

[0008] A hemispherical light source device comprises:

[0009] A hemispherical cover body, the inner side spherical surface of the hemispherical cover body is a total reflection surface;

[0010] A uniform diffuser has a hemispherical diffuser shell parallel to the inner side spherical surface, and the hemispherical diffuser shell is surrounded by the inner side spherical surface;

[0011] A ring-shaped light plate is arranged between the inner side spherical surface and the hemispherical diffuser shell, used to emit light to the inner side spherical surface, and the light is reflected by the inner side spherical surface and then passes through the hemispherical diffuser shell to the workpiece.

[0012] Optionally, the hemispherical light source device further comprises a support shell having a light-transmitting through hole for light to pass through;

[0013] The hemispherical cover, the uniform diffuser and the annular lamp plate are all mounted on the support shell, and the annular lamp plate surrounds the light transmission through hole.

[0014] Optionally, the bottom of the hemispherical diffuser shell extends a transversely extending ring, the transversely extending ring is attached to the support shell, and the transversely extending ring surrounds the light transmission through hole.

[0015] Optionally, the hemispherical light source device further comprises a compression ring.

[0016] The bottom of the hemispherical cover is provided with an annular mounting portion, the support shell is provided with an annular mounting groove matched with the annular mounting portion, and the compression ring compresses the annular mounting portion in the annular mounting groove.

[0017] Optionally, a detection hole is formed in the hemispherical cover, and the center line of the detection hole coincides with the rotation center line of the hemispherical cover.

[0018] The uniform diffuser further comprises a connecting cylinder portion connected to the hemispherical diffuser shell, the connecting cylinder portion is inserted into the detection hole, and the hemispherical diffuser shell is provided with an avoidance hole communicating with the inner hole of the connecting cylinder portion.

[0019] The outer diameter of the connecting cylinder portion matches the inner diameter of the detection hole.

[0020] Optionally, the top surface of the connecting cylinder portion is not protruded from the outer spherical surface of the hemispherical cover.

[0021] Optionally, the aperture of the avoidance hole is equal to the aperture of the inner hole of the connecting cylinder portion.

[0022] Optionally, the annular lamp plate comprises an annular circuit board and a circumferential array of lamp beads arranged on the annular circuit board.

[0023] The lamp beads are located on the top surface of the annular circuit board close to the hemispherical cover.

[0024] Optionally, the transversely extending ring is fixed on the support shell by gluing.

[0025] A visual detection device comprises the hemispherical light source device according to any one of the above.

[0026] Compared with the prior art, the hemispherical light source device has the following beneficial effects:

[0027] The hemispherical light source device and the visual inspection device provided by the utility model have the characteristics and advantages that will be apparent from and / or will be set forth in the accompanying drawings and the subsequent detailed description, which are incorporated herein and serve to explain the specific principles of the utility model.

[0028] The utility model has other characteristics and advantages, which will be apparent from and / or will be set forth in the accompanying drawings and the subsequent detailed description, which are incorporated herein and serve to explain the specific principles of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the accompanying drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other accompanying drawings according to these accompanying drawings without creative labor.

[0030] Figure 1 It is the top view schematic diagram of the hemispherical light source device provided by the utility model embodiment;

[0031] Figure 2 It is Figure 1 It is the A-A cross section structure schematic diagram of the hemispherical light source device in;

[0032] Figure 3 It is the three-dimensional schematic diagram of the hemispherical light source device provided by the utility model embodiment;

[0033] Figure 4 It is the explosion schematic diagram of the hemispherical light source device provided by the utility model embodiment.

[0034] Sign significance: 1, hemispherical cover;101, inner spherical surface;11, annular mounting portion;12, detection hole;2, uniform diffuser;21, hemispherical diffuser shell;22, transversely extending ring;23, connecting barrel portion;3, annular lamp plate;31, annular circuit board;32, lamp pearl;4, support shell;41, light transmission through hole;5, compression ring. DETAILED DESCRIPTION

[0035] To explain possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects of the present application in detail, the following embodiments are described 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 therefore only serve as examples, and cannot limit the protection scope of the present application.

[0036] In this paper, the term "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various places in the specification does not necessarily refer to the same embodiment, and does not 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, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0037] Unless otherwise defined, the meaning of the technical terms used herein is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms herein is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0038] 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 paper generally represents that the associated objects before and after are a "or" logical relationship.

[0039] In the present application, terms such as "first" and "second" 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.

[0040] In the present 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 elements inherent to such process, method or product.

[0041] As the same understanding in the "Examination Guidelines", in this application, "greater than", "less than", "exceed" and so on are understood as not including the number; "above", "below", "within" and so on are understood as including the number. In addition, in the description of the embodiments of the application, the meaning of "multiple" 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 specified.

[0042] In the description of the embodiments of the application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing, and are only for the convenience of describing the specific embodiments of the application or for the reader to understand, and do not indicate or imply that the indicated 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 application.

[0043] Unless otherwise explicitly specified or limited, in the description of the embodiments of the application, the terms "mount", "connect", "connect", "fix", "set" and the like should be understood broadly. For example, the "connection" can be fixed connection, or detachable connection, or integrated setting; it can be mechanical connection, or electrical connection, or communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art to which the application belongs, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0044] Embodiment one

[0045] In view of the defects of the existing hemispherical light source device, the applicant, based on many years of rich practical experience and professional knowledge in designing and manufacturing such products, and with the use of theory, actively researches and innovates, in order to create a technology that can solve the defects in the prior art, so that the hemispherical light source device is more practical. After continuous research, design, and repeated trial of samples and improvement, the practical new type is finally created.

[0046] Please refer to Figures 1 to 4 The embodiment of the present application provides a hemispherical light source device, which comprises a hemispherical cover 1, a uniform diffuser 2 and a ring-shaped lamp panel 3.

[0047] The inner side spherical surface 101 of the half-spherical cover 1 is a total reflection surface, the uniform diffuser 2 has a half-spherical diffusion shell 21 parallel to the inner side spherical surface 101, and the half-spherical diffusion shell 21 is surrounded by the inner side spherical surface 101; the annular lamp plate 3 is arranged between the inner side spherical surface 101 and the half-spherical diffusion shell 21, and is used for emitting light to the inner side spherical surface 101, and the light is reflected by the inner side spherical surface 101 and then passes through the half-spherical diffusion shell 21 to be emitted to the workpiece.

[0048] In the half-spherical light source device, the half-spherical diffusion shell 21 is arranged inside the half-spherical cover 1, and the half-spherical diffusion shell 21 is parallel to the inner side spherical surface 101 of the half-spherical cover 1, so that the light emitted by the annular lamp plate 3 can be reflected by the inner side spherical surface 101 to the half-spherical diffusion shell 21, and the light passing through the half-spherical diffusion shell 21 is diffused to the workpiece, and the workpiece is more uniformly illuminated. In the embodiment, the circuit board in the form of an arc does not need to be spliced, and the installation is simpler, and the light passing through the half-spherical diffusion shell can be uniformly projected on the workpiece.

[0049] Optionally, the half-spherical light source device further comprises a support shell 4, the support shell 4 has a light-transmitting through hole 41 through which the light passes; the half-spherical cover 1, the uniform diffuser 2 and the annular lamp plate 3 are all mounted on the support shell 4, and the annular lamp plate 3 surrounds the light-transmitting through hole 41. Specifically, after the light passes through the half-spherical diffusion shell 21, the light is irradiated on the surface of the workpiece through the light-transmitting through hole 41, so that the top of the workpiece is uniformly irradiated.

[0050] The support shell 4 supports the half-spherical cover 1, the uniform diffuser 2 and the annular lamp plate 3. It should be further pointed out that the bottom of the support shell 4 supporting the annular lamp plate 3 is not light-transmitting, so as to avoid the light of the annular lamp plate 3 directly leaking out and irradiating on the surface of the workpiece.

[0051] Optionally, the bottom of the half-spherical diffusion shell 21 extends a transversely extending ring 22, the transversely extending ring 22 is attached to the support shell 4, and the transversely extending ring 22 surrounds the light-transmitting through hole 41. Specifically, the transversely extending ring 22 can make the uniform diffuser 2 more stably mounted on the support shell 4.

[0052] Optionally, the half-spherical light source device further comprises a pressing ring 5; the bottom of the half-spherical cover 1 is provided with an annular mounting portion 11, the support shell 4 is provided with an annular mounting groove matching the annular mounting portion 11, and the pressing ring 5 presses the annular mounting portion 11 in the annular mounting groove. Specifically, the annular mounting groove can better position the annular mounting portion 11, so that the annular mounting portion 11 can be accurately mounted at the set position. In addition, by providing the pressing ring 5, the mounting stability of the half-spherical cover 1 can be further improved.

[0053] Optionally, the hemispherical cover 1 is provided with a detection hole 12, and the center line of the detection hole 12 coincides with the rotation center line of the hemispherical cover 1; the uniform diffuser 2 further comprises a connecting cylinder part 23 connected to the hemispherical diffuser shell 21, the connecting cylinder part 23 is inserted into the detection hole 12, and the hemispherical diffuser shell 21 is provided with an avoiding hole communicating with the inner hole of the connecting cylinder part 23. The outer diameter of the connecting cylinder part 23 matches the inner diameter of the detection hole 12. Specifically, the connecting cylinder part 23 is directly inserted into the detection hole 12 for positioning, so that the position between the hemispherical cover 1 and the uniform diffuser 2 is easier to position. It should be further pointed out that the connecting cylinder part 23 and the hemispherical diffuser shell 21 are both materials that can diffuse light, and these materials have good optical performance and diffuse reflection characteristics.

[0054] Optionally, the top surface of the connecting cylinder part 23 is not protruded from the outer spherical surface of the hemispherical cover 1.

[0055] Optionally, the hole diameter of the avoiding hole is equal to the hole diameter of the inner hole of the connecting cylinder part 23.

[0056] Optionally, the annular lamp panel 3 comprises an annular circuit board 31 and a plurality of lamp beads 32 arranged in a circumferential array on the annular circuit board 31; the lamp beads 32 are located on the top surface of the annular circuit board 31 close to the hemispherical cover 1.

[0057] Optionally, the transversely extending ring 22 is glued and fixed on the support shell 4, and the installation is simpler and more convenient.

[0058] Embodiment two

[0059] A visual detection device comprises the hemispherical light source device as described in embodiment one.

[0060] Finally, it should be pointed out that although the above embodiments have been described in the specification and drawings of the present application, it does not limit the patent protection scope of the present application. Any equivalent structure or equivalent flow replacement or modification based on the essential concept of the present application, using the content described in the specification and drawings, 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. A semi-spherical light source arrangement, characterized by The application relates to a half-spherical light source device. The application comprises: a half-spherical cover (1), the inner side of which is a total reflection surface; a uniform diffuser (2) with a half-spherical diffusing shell (21) parallel to the inner side of the half-spherical cover (1), and the half-spherical diffusing shell (21) is surrounded by the inner side of the half-spherical cover (1); 2. The half-spherical light source apparatus according to claim 1, characterized by a ring-shaped lamp panel (3) arranged between the inner side of the half-spherical cover (1) and the half-spherical diffusing shell (21) for emitting light to the inner side of the half-spherical cover (1), and the light is reflected by the inner side of the half-spherical cover (1) and then emitted to a workpiece through the half-spherical diffusing shell (21). The application further comprises a support shell (4) with a light-transmitting through hole (41) for the light to pass through; 3. The half-spherical light source apparatus according to claim 2, characterized by the half-spherical cover (1), the uniform diffuser (2) and the ring-shaped lamp panel (3) are all mounted on the support shell (4), and the ring-shaped lamp panel (3) surrounds the light-transmitting through hole (41).

4. The half-spherical light source apparatus according to claim 2, characterized by The bottom of the half-spherical diffusing shell (21) extends a transversely extending ring (22) which is attached to the support shell (4), and the transversely extending ring (22) surrounds the light-transmitting through hole (41). The application further comprises a compression ring (5); 5. The half-spherical light source apparatus according to claim 1, characterized by the bottom of the half-spherical cover (1) is provided with a ring-shaped mounting part (11), the support shell (4) is provided with a ring-shaped mounting groove matched with the ring-shaped mounting part (11), and the compression ring (5) compresses the ring-shaped mounting part (11) in the ring-shaped mounting groove. a detection hole (12) is arranged on the half-spherical cover (1), and the center line of the detection hole (12) coincides with the rotation center line of the half-spherical cover (1); the uniform diffuser (2) further comprises a connecting cylinder part (23) connected to the half-spherical diffusing shell (21), the connecting cylinder part (23) is inserted into the detection hole (12), and the half-spherical diffusing shell (21) is provided with an avoiding hole communicating with the inner hole of the connecting cylinder part (23); 6. The half-spherical light source apparatus according to claim 5, characterized by the outer diameter of the connecting cylinder part (23) matches the inner diameter of the detection hole (12).

7. The half-spherical light source apparatus according to claim 5, wherein the top surface of the connecting cylinder part (23) is not protruded from the outer side of the half-spherical cover (1).

8. The half-spherical light source apparatus according to claim 1, characterized by the hole diameter of the avoiding hole is equal to the hole diameter of the inner hole of the connecting cylinder part (23). the ring-shaped lamp panel (3) comprises a ring-shaped circuit board (31) and lamp beads (32) arranged in a circumferential array on the ring-shaped circuit board (31); 9. The half-spherical light source apparatus according to claim 3, characterized by the lamp beads (32) are located on the top surface of the ring-shaped circuit board (31) close to the half-spherical cover (1).

10. A vision inspection apparatus characterized by comprising: the transversely extending ring (22) is fixed on the support shell (4) by gluing. The application further comprises the half-spherical light source device as claimed in any one of claims 1 to 9.

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