Backlight source device and machine vision detection system

Abstract

The utility model relates to the technical field of machine vision detection, and discloses a backlight source device and a machine vision detection system, comprising: a housing, the interior of which is hollow and one end of which is open; and the lamp panel is arranged in the shell. According to the backlight source device and the machine vision detection system provided by the utility model, the backlight source device with the opening at one end of the shell is designed, so that when the backlight source device is arranged above the rotating platform, the opening end of the shell can be arranged below; therefore, the area, corresponding to the open end of the backlight source, below the workpiece on the rotating platform can be irradiated without shielding, it is ensured that light rays cover the whole area of the workpiece, global uniform illumination of the workpiece is achieved, and the quality of visual inspection or image processing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine vision detection, in particular to a backlight source device and a machine vision detection system. Background Art

[0002] Generally, the periphery of a backlight source is tightly sealed by a frame to ensure the stability and safety of the light source. However, when such a backlight source is placed above a rotating platform, it will be found that due to the specific design of the frame of the light source housing, that is, it has a certain physical thickness and the frame itself is not a light-emitting body, this causes the light of the light source to only cover the upper area of the workpiece and cannot achieve uniform illumination of the entire area of the workpiece.

[0003] More specifically, the area corresponding to the lower housing frame of the backlight source below the workpiece (such as Figure 1 the A area shown in

[0004] cannot receive direct illumination from the backlight source due to the occlusion of the frame. This phenomenon of local lack of light inevitably causes non-uniform illumination of the entire workpiece, which may in turn affect the quality of subsequent vision detection or image processing.

[0005] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or admit whether any of the above content can be used as prior art relative to the present disclosure. Summary of the Utility Model

[0006] The utility model provides a backlight source device and a machine vision detection system to solve the problems existing in the prior art.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] In a first aspect, the utility model provides a backlight source device, comprising:

[0009] A housing, the interior of the housing is hollow and one end is open;

[0010] A lamp board, the lamp board is arranged inside the housing.

[0011] Further, in the backlight source device, the housing comprises two side plates, a diffusion plate, a top plate and a back plate;

[0012] One of the side plates, the diffusion plate, the other side plate and the back plate are sequentially connected to form a rectangular frame structure with openings at both ends;

[0013] The top plate is disposed at the opening at one end of the rectangular frame structure.

[0014] Further, in the backlight source device, slots for fixing the lamp board are formed in both of the side plates.

[0015] Further, in the backlight source device, the housing further includes a bottom plate;

[0016] The bottom plate is disposed at the opening at the other end of the rectangular frame structure, and the bottom plate is a transparent plate.

[0017] Further, the backlight source device further includes heat-conducting silica gel;

[0018] The heat-conducting silica gel is located between the back surface of the lamp board and the housing.

[0019] Further, in the backlight source device, the lamp board includes a PCB and a plurality of lamp beads;

[0020] The plurality of lamp beads are disposed on the PCB.

[0021] Further, in the backlight source device, the plurality of LED lamp beads are evenly spaced.

[0022] In a second aspect, the present invention provides a machine vision detection system, including an image acquisition module and the backlight source device as described in the first aspect above.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] A backlight source device and a machine vision detection system provided by the present invention, by designing a backlight source device with an opening at one end of the housing, when placed above a rotating platform, the open end of the housing can be placed below, so that the area corresponding to the open end of the backlight source below the workpiece on the rotating platform can be irradiated without obstruction, ensuring that the light covers all areas of the workpiece, realizing uniform illumination of the entire area of the workpiece, and being beneficial to improving the quality of vision detection or image processing.

[0025] The present invention has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent specific embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent specific embodiments, and these drawings and specific embodiments are used together to explain the specific principles of the present invention. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the area below the workpiece that cannot be irradiated by the backlight source in the prior art;

[0028] Figure 2 It is a (three-dimensional) structural schematic diagram of a backlight source device provided in the first embodiment of the present invention;

[0029] Figure 3 It is a (front view) structural schematic diagram of a backlight source device provided in the first embodiment of the present invention;

[0030] Figure 4 It is a (exploded) structural schematic diagram of a backlight source device provided in the first embodiment of the present invention;

[0031] Figure 5 It is a (three-dimensional) structural schematic diagram of a machine vision inspection system provided in the second embodiment of the present invention;

[0032] Figure 6 It is a (side view) structural schematic diagram of a machine vision inspection system provided in the second embodiment of the present invention.

[0033] Reference numerals:

[0034] Housing 1, lamp board 2, thermal conductive silicone 3;

[0035] Side plate 11, diffusion plate 12, top plate 13, back plate 14, card slot 15;

[0036] Image acquisition module 100, backlight source device 200. Detailed implementation manners

[0037] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, etc., the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0038] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase "embodiment" that appears in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to 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 corresponding implementable technical solutions.

[0039] Unless otherwise defined, the meanings of the technical terms used in this document are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of the relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0040] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: the existence of A, the existence of B, and the simultaneous existence of A and B. In addition, the character " / " in this document generally represents an "or" logical relationship between the associated objects before and after.

[0041] In this 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 quantitative, primary-secondary, or sequential relationship between these entities or operations.

[0042] Without further limitation, in this application, the use of "including", "comprising", "having", or other similar expressions in a statement is intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product that includes the stated elements, so that a process, method, or product that includes a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method, or product.

[0043] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "multiple" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0044] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings. It is only for the convenience of describing the specific embodiments of the present application or facilitating the understanding of the readers, rather than indicating or implying 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, it should not be construed as a limitation to the embodiments of the present application.

[0045] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms such as "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "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 directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0046] Embodiment 1

[0047] In view of the defects existing in the above-mentioned prior art, based on the rich practical experience and professional knowledge in the design and manufacture of such products for many years by the applicant, and in cooperation with the application of theory, the applicant actively conducts research and innovation in the hope of creating a technology that can solve the defects in the prior art. After continuous research, design, and repeated sample making and improvement, the applicant finally creates the present utility model with practical value.

[0048] Please refer to Figure 1-3 , the embodiments of the present utility model provide a backlight source device with a unique structural design and high efficiency, including:

[0049] A housing 1, the interior of the housing 1 is hollow to accommodate and protect the components inside. Particularly crucial is that one end of the housing 1 is designed to be open, and this unique design can solve the problem of insufficient illumination under the workpiece due to occlusion;

[0050] A lamp board 2, the lamp board 2 is arranged inside the housing 1, and the lamp board 2 serves as the light-emitting body, ensuring that the backlight source device can emit bright and uniform light.

[0051] It should be noted that in this embodiment, the convenience and practicality of the backlight source device in actual applications are particularly considered. By designing one end of the housing 1 to be open, when the device is placed above the rotating platform, the open end of the housing 1 can face down naturally. This design enables the area corresponding to the open end of the backlight source device directly below the workpiece on the rotating platform to receive light irradiation directly and unobstructed. This feature ensures that the light can fully cover every area of the workpiece, achieving uniform illumination across the entire area. This not only improves the efficiency of visual inspection but also provides clearer and more accurate original data for subsequent image processing, thereby significantly enhancing the overall quality of visual inspection or image processing.

[0052] Please refer to 2-4 again. In this embodiment, the housing 1 includes two side plates 11, a diffuser plate 12, a top plate 13, and a back plate 14;

[0053] One of the side plates 11, the diffuser plate 12, the other side plate 11, and the back plate 14 are sequentially connected to form a rectangular frame structure with openings at both ends;

[0054] The top plate 13 is disposed at the opening at one end of the rectangular frame structure.

[0055] Please refer to 2-4 again. In this embodiment, the housing 1 has a unique and delicate structural design. Specifically, the housing 1 includes the following main parts:

[0056] First, there are two side plates 11, which are located on both sides of the device respectively and play a role in supporting and fixing. These two side plates 11, together with the diffuser plate 12 and the back plate 14, constitute the main frame of the device;

[0057] Secondly, the diffuser plate 12 is located between the two side plates 11. Its design purpose is to evenly diffuse the light emitted by the lamp board 2 to ensure the same brightness in the entire illumination area. The material and surface treatment of the diffuser plate 12 are carefully selected to achieve the best diffusion effect.

[0058] Thirdly, the back plate 14 is located at the back of the device and is tightly connected to the two side plates 11; One of the side plates 11, the diffuser plate 12, the other side plate 11, and the back plate 14 are sequentially connected to form a rectangular frame structure with openings at both ends; This rectangular frame structure is not only stable and reliable but also provides a stable space for the installation of the lamp board 2.

[0059] Finally, the top plate 13 is disposed at the opening at one end of the rectangular frame structure. The design of the top plate 13 is such that only one end of the housing 1 is in an open state. When the backlight source device is placed above the rotating platform, the open end is placed downward, so that the area below the workpiece on the rotating platform corresponds to the open end of the housing 1, thus achieving unobstructed illumination.

[0060] Such a design not only ensures that the light can cover the entire area of the workpiece, achieves uniform illumination of the entire area of the workpiece, improves the quality of visual inspection or image processing, but also makes the structure of the entire device more compact and reasonable, and is easy to install and maintain.

[0061] Please refer to 4 again. In this embodiment, both of the two side plates 11 are provided with card slots 15 for fixing the lamp board 2.

[0062] It should be noted that the design of the card slot 15 ensures that the lamp board 2 can be firmly installed inside the backlight source device, avoiding the possible shaking or falling off during the working process. The shape and size of the card slot 15 are customized according to the specific specifications and dimensions of the lamp board 2 to ensure that the lamp board 2 can be tightly and stably embedded therein.

[0063] Through this design, we can not only ensure the stability and reliability of the lamp board 2, but also improve the assembly efficiency and convenience of the entire backlight source device. At the same time, this way of fixing with card slots also makes the replacement and maintenance of the lamp board 2 simpler and more convenient, further enhancing the use value and user experience of the backlight source device.

[0064] In another embodiment, the backlight source device of the present utility model is further optimized and improved. Specifically, in addition to the original side plates 11, diffusion plate 12, top plate 13 and back plate 14 of the housing 1, a bottom plate is newly added.

[0065] This bottom plate is cleverly disposed at the opening at the other end of the rectangular frame structure, and together with the side plates 11, diffusion plate 12 and back plate 14, it forms a completely enclosed box structure. Importantly, this bottom plate is made of a transparent plate material, such as glass or transparent plastic, etc., to ensure that the light can penetrate the bottom plate smoothly and irradiate the workpiece.

[0066] By adding the bottom plate and using a transparent material, while maintaining the uniform diffusion of light, the backlight source device also enhances the stability and dust-proof ability of the entire device. In addition, the transparent bottom plate can make the light softer, reduce the generation of glare and shadows, and further improve the quality of visual inspection or image processing.

[0067] In summary, this backlight source device with an additional bottom plate not only has a more complete and stable structure, but also has more comprehensive and powerful functions, and can meet the usage requirements in more different scenarios.

[0068] Please refer to 4 again. In this embodiment, the backlight source device is further optimized, and in particular, thermal conductive silicone 3 is introduced as a key component. The thermal conductive silicone 3 is carefully placed between the back of the lamp board 2 and the housing 1, playing an important role in heat conduction and fixation.

[0069] As a high-performance thermal conductive material, the thermal conductive silicone 3 has excellent thermal conductivity and good insulation performance. It can effectively transfer the heat generated by the lamp board 2 to the housing 1, and then dissipate the heat to the surrounding environment through the heat dissipation structure of the housing 1, thereby ensuring that the lamp board 2 can operate stably at a lower temperature and improving the service life and reliability of the entire backlight source device.

[0070] In addition, the thermal conductive silicone 3 also has good adhesiveness and compressibility, and can closely adhere between the lamp board 2 and the housing 1, playing a role in fixation and buffering. This can not only prevent the lamp board 2 from being displaced or damaged during vibration or impact, but also reduce the noise and vibration interference generated by vibration or impact, further improving the stability and reliability of the backlight source device.

[0071] In summary, by introducing the thermal conductive silicone 3 as a key component, the backlight source device of this embodiment not only maintains uniform light diffusion, but also has better thermal conduction and fixation performance, and can meet the higher requirements of industrial application scenarios.

[0072] In this embodiment, the lamp board 2 of the backlight source device has a more detailed structure. Specifically, the lamp board 2 is composed of a PCB (printed circuit board) and several lamp beads, and these lamp beads are precisely arranged on the PCB.

[0073] As the substrate of the lamp board 2, the PCB provides the basis for electrical connection. Its design ensures the stable transmission of current and the uniformity of distribution, providing the necessary support for the normal operation of the lamp beads.

[0074] As for the lamp beads, as the light-emitting elements, they directly determine the lighting effect of the backlight source device. These lamp beads can be LEDs (light-emitting diodes) or other suitable light-emitting elements. In order to ensure the uniformity of light distribution and the stability of the lighting effect, these LED lamp beads are evenly spaced on the PCB. Such a layout not only ensures that the light can evenly illuminate the workpiece, but also avoids the brightness difference and shadow caused by uneven distribution of the lamp beads.

[0075] In addition, the selection of LED lamp beads has also been carefully considered. They have the advantages of high efficiency, energy saving, long lifespan, etc., and can meet the requirements of the backlight source device for long-term stable operation. At the same time, through reasonable circuit design and lamp bead layout, precise control and adjustment of light can also be achieved to adapt to different workpieces and lighting requirements.

[0076] In summary, the lamp board 2 in this embodiment realizes efficient, stable, and uniform lighting effects by using a PCB and LED lamp beads evenly spaced, making an important contribution to the improvement of the overall performance of the backlight source device.

[0077] Although terms such as housing, lamp board, heat-conducting silicone, etc. are used more frequently in this application, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

[0078] A backlight source device provided by the present utility model, by designing a backlight source device with one end of the housing open, when placed above the rotating platform, the open end of the housing can be placed below, so that the area corresponding to the open end of the backlight source below the workpiece on the rotating platform can be irradiated without obstruction, ensuring that the light covers the entire area of the workpiece and realizing uniform illumination of the entire area of the workpiece, which is beneficial to improving the quality of visual inspection or image processing.

[0079] Embodiment 2

[0080] Please refer to Figure 5-6 , the embodiment of the present utility model provides a machine vision inspection system, which mainly includes two core components: an image acquisition module 100 and a backlight source device 200, wherein the backlight source device 200 adopts the design in the first embodiment above.

[0081] In this machine vision inspection system, the design of the backlight source device 200 is particularly crucial. Through the carefully designed structure with one end of the housing open, when the backlight source device 200 is placed above the rotating platform, the open end of the housing can be placed downward. Such a design makes the area below the workpiece on the rotating platform correspond to the open end of the backlight source device 200, thus realizing unobstructed illumination. This unobstructed illumination method ensures that the light can cover the entire area of the workpiece and realizes uniform illumination of the entire area of the workpiece.

[0082] Uniform illumination of the entire area is crucial for improving the quality of visual inspection or image processing. The uniform light distribution can ensure that the images captured by the image acquisition module 100 are clear and accurate, avoiding shadows or bright spots caused by uneven light, thereby improving the accuracy and efficiency of subsequent image processing.

[0083] As another important component of the machine vision inspection system, the image acquisition module 100 is responsible for capturing the images of the workpieces. By working in coordination with the backlight source device 200, the image acquisition module 100 can obtain high-quality and high-definition images, providing reliable data support for subsequent image processing and analysis.

[0084] In summary, the machine vision inspection system provided by the present utility model realizes the global uniform illumination of the workpieces through the design of the backlight source device 200 with one end open, improving the quality of vision inspection or image processing. This system has broad application prospects in the fields of industrial automation, quality inspection, etc.

[0085] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the substantial concept of this application, using the content recorded in the text and drawings of the specification of this application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. A backlight light source device, characterized in that, Comprising: A housing (1), the interior of the housing (1) being hollow and having an opening at one end; A lamp board (2), the lamp board (2) being disposed inside the housing (1); The housing (1) includes two side plates (11), a diffusion plate (12), a top plate (13) and a back plate (14); One of the side plates (11), the diffusion plate (12), the other side plate (11) and the back plate (14) are sequentially connected to form a rectangular frame structure with openings at both ends; The top plate (13) is disposed at the opening at one end of the rectangular frame structure.

2. The backlight light source device according to claim 1, characterized in that, Both of the two side plates (11) are provided with card slots (15) for fixing the lamp board (2).

3. The backlight light source device according to claim 1, wherein The housing (1) further includes a bottom plate; The bottom plate is disposed at the opening at the other end of the rectangular frame structure, and the bottom plate is a transparent plate.

4. The backlight light source device according to claim 1, characterized in that, Also included is thermal conductive silica gel (3); The thermal conductive silica gel (3) is located between the back surface of the lamp board (2) and the housing (1).

5. The backlight light source device according to claim 1, characterized in that, The lamp board (2) includes a PCB and a plurality of lamp beads; The plurality of lamp beads are disposed on the PCB.

6. The backlight light source device according to claim 5, wherein The plurality of lamp beads are evenly spaced.

7. A machine vision inspection system, characterized in that, Including an image acquisition module (100) and a backlight source device (200) according to any one of claims 1-6.

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