Lens assembling and detecting integrated system

Abstract

The utility model relates to the technical field of machine vision detection, and discloses a lens assembly and detection integrated system which is characterized in that an image acquisition module, a middle hole surface light source, a first annular shadowless diffusion light source and a second annular shadowless diffusion light source are sequentially arranged in the vertical direction from top to bottom; a lens positioning and assembling system can be formed by the image acquisition module and the mesopore surface light source, so that each lens can be effectively positioned in the lens assembling process, and a lens defect detection system can be formed by the image acquisition module, the first annular shadowless diffused light source and the second annular shadowless diffused light source, according to the lens defect detection device, the defect is prevented from being covered by the reflective lamp beads in the lens defect detection process, so that the assembly accuracy and efficiency are greatly improved, various defects on the lens can be accurately recognized, and the popularization of machine vision detection is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of machine vision detection, in particular to a comprehensive lens assembly detection system. Background Art

[0002] In modern automated production processes, machine vision detection systems have been widely applied in industries such as electronics, semiconductors, automobiles, lithium battery photovoltaics, etc. However, due to the diverse shapes of workpieces, their complexity poses significant challenges to the lighting imaging technology for vision detection.

[0003] Currently, the lens detection faces two major problems that need to be solved urgently:

[0004] Firstly, a lens is composed of multiple lenses with different shapes, and these lenses need to be precisely installed layer by layer in height during assembly. Therefore, how to effectively locate each lens is the key to ensuring the detection accuracy.

[0005] Secondly, when detecting the assembled lens, the high transparency and strong reflective characteristics of the lens cause reflection of the light source lamp beads. This reflection phenomenon may obscure the defect features of the lens, especially when the defect is exactly located in the illumination area of the reflective lamp beads, and the normal detection process will be severely disrupted. In addition, due to the differences in the refractive indices of different-shaped lenses, the size and position of the light spots generated by the reflective lamp beads will also vary, and the height of the light source will directly affect the specific position of the reflected light spot.

[0006] In view of the above problems, it is particularly urgent to optimize and improve the existing technology.

[0007] The above information is given as background information only to assist in understanding the present disclosure, and it is not determined or admitted whether any of the above content can be used as prior art relative to the present disclosure. Summary of the Utility Model

[0008] The utility model provides a comprehensive lens assembly detection system to solve the problems existing in the prior art.

[0009] To achieve the above object, the utility model provides the following technical solutions:

[0010] A comprehensive lens assembly detection system includes an image acquisition module, a middle-hole surface light source, a first annular shadowless diffused light source, and a second annular shadowless diffused light source; wherein,

[0011] The image acquisition module, the middle-hole surface light source, the first annular shadowless diffused light source, and the second annular shadowless diffused light source are arranged in sequence from top to bottom in the vertical direction;

[0012] Through holes are provided at the centers of the middle-hole surface light source, the first annular shadowless diffused light source, and the second annular shadowless diffused light source;

[0013] The image acquisition module, the through holes of the first annular shadowless diffused light source, the through holes of the first annular shadowless diffused light source, and the through holes of the second annular shadowless diffused light source are coaxially arranged in the vertical direction;

[0014] The image acquisition module has an automatic zoom function;

[0015] The image acquisition module and the middle-hole surface light source form a lens positioning and assembly system;

[0016] The image acquisition module, the first annular shadowless diffused light source, and the second annular shadowless diffused light source form a lens defect detection system, and the first annular shadowless diffused light source and the second annular shadowless diffused light source are turned on separately.

[0017] Further, in the lens assembly and detection integrated system, the distance between the image acquisition module and the workpiece to be detected is 211 ± 5 mm.

[0018] Further, in the lens assembly and detection integrated system, the distance between the middle-hole surface light source and the workpiece to be detected is 150 ± 5 mm.

[0019] Further, in the lens assembly and detection integrated system, the distance between the first annular shadowless diffused light source and the workpiece to be detected is 110 ± 5 mm.

[0020] Further, in the lens assembly and detection integrated system, the distance between the second annular shadowless diffused light source and the workpiece to be detected is 62 ± 5 mm.

[0021] Further, in the lens assembly and detection integrated system, the distance between the first annular shadowless diffused light source and the second annular shadowless diffused light source is 10 ± 2 mm.

[0022] Further, in the lens assembly and detection integrated system, the image acquisition module includes a area array camera and a liquid lens.

[0023] Further, in the lens assembly and detection integrated system, the light source lines of the middle-hole surface light source, the first annular shadowless diffused light source, and the second annular shadowless diffused light source are all provided with straight plugs, and plugs are inserted on the straight plugs.

[0024] Compared with the prior art, the present utility model has the following beneficial effects:

[0025] A comprehensive lens assembly detection system provided by the present utility model, by sequentially arranging an image acquisition module, a middle-hole surface light source, a first annular shadowless diffused light source, and a second annular shadowless diffused light source from top to bottom in the vertical direction, enables the image acquisition module and the middle-hole surface light source to form a lens positioning and assembly system to effectively position each lens during the lens assembly process. The image acquisition module, along with the first annular shadowless diffused light source and the second annular shadowless diffused light source that are turned on in sequence, can form a lens defect detection system to avoid the situation of missed detection caused by defects being covered by reflective lamp beads during the lens defect detection process. Thus, it not only greatly improves the accuracy and efficiency of assembly but also can accurately identify various defects on the lens, which is beneficial to the popularization of machine vision detection.

[0026] The present utility model has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent detailed implementation manners, or will be described in detail in the accompanying drawings incorporated herein and the subsequent detailed implementation manners. These accompanying drawings and detailed implementation manners are jointly used to explain the specific principles of the present utility model. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0028] Figure 1 It is a schematic (three-dimensional) view of the structure of a comprehensive lens assembly detection system provided by an embodiment of the present utility model;

[0029] Figure 2 It is a schematic (side view) of the structure of a comprehensive lens assembly detection system provided by an embodiment of the present utility model;

[0030] Figure 3 It is a schematic (side view) of the structure of a comprehensive lens assembly detection system provided by an embodiment of the present utility model;

[0031] Figure 4 It is a schematic (three-dimensional) view of the structure of the middle-hole surface light source provided by an embodiment of the present utility model;

[0032] Figure 5 It is a schematic (three-dimensional) view of the structure of the first annular shadowless diffused light source provided by an embodiment of the present utility model;

[0033] Figure 6 It is a schematic (three-dimensional) view of the structure of the second annular shadowless diffused light source provided by an embodiment of the present utility model.

[0034] Reference Numerals:

[0035] Image acquisition module 1, middle-hole surface light source 2, first annular shadowless diffused light source 3, second annular shadowless diffused light source 4, through hole 5, light source line 6, workpiece to be detected 7;

[0036] Area array camera 11, liquid lens 12. Detailed Embodiments

[0037] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects, etc. of the present application, the following will be described in detail with reference to the specific examples listed and 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 are only examples and cannot be used to limit the protection scope of the present application.

[0038] Reference to "embodiment" in this document means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" that appears in various positions 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 the present 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 generally understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms in this document is only for describing specific embodiments and is not intended to limit the present application.

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

[0041] 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 or secondary, or order relationship between these entities or operations.

[0042] Without further limitations, in this application, the terms "including", "comprising", "having" or other similar expressions used in a statement are 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 including the said elements. Thus, in a process, method or product including a series of elements, it may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0043] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the base number; expressions such as "above", "below", "within" are understood to include the base number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). 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 this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "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 embodiment or drawing. It is only for the convenience of describing the specific embodiments of this application or for the reader's understanding, 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 this application.

[0045] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the said "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 internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this 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 manufacturing of this field for many years, and in cooperation with the application of academic theory, the applicant has actively carried out 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, a truly practical and valuable utility model has finally been created.

[0048] Please refer to Figures 1-6 , the embodiment of the present utility model provides a comprehensive lens assembly detection system. Through elaborate module configuration and light source layout, the system realizes the efficient assembly and precise detection of lenses. The following is a detailed description of the composition and functions of the system:

[0049] This system mainly includes an image acquisition module 1, a central hole surface light source 2, a first annular shadowless diffused light source 3, and a second annular shadowless diffused light source 4. These modules and light sources are arranged in sequence from top to bottom in the vertical direction, ensuring the smoothness of light propagation and the accuracy of image acquisition.

[0050] Through holes 5 are designed at the centers of the central hole surface light source 2, the first annular shadowless diffused light source 3, and the second annular shadowless diffused light source 4. These through holes 5 enable light to penetrate and evenly irradiate the workpiece 7 to be detected, that is, the lens, while allowing the image acquisition module 1 to capture a clear image of the lens from above.

[0051] It is particularly worth mentioning that the through holes 5 of the image acquisition module 1, the first annular shadowless diffused light source 3, and the second annular shadowless diffused light source 4 are coaxially arranged in the vertical direction. This design not only optimizes the light propagation path but also ensures the accuracy and stability of image acquisition.

[0052] In addition, the image acquisition module 1 has an automatic zoom function, which enables the system to automatically adjust the focal length according to different detection requirements, thereby obtaining a clearer and more accurate lens image.

[0053] This system cleverly utilizes the combination and cooperation among modules to realize two major functions: lens positioning and assembly, and defect detection. Specifically, for the lens positioning and assembly system:

[0054] By cleverly integrating the central hole surface light source 2 and the image acquisition module 1 with an automatic zoom function, an efficient and precise lens positioning and assembly system is constructed. During the lens assembly process, the central hole surface light source 2 plays a key role. It provides stable and uniform illumination, enabling the image acquisition module 1 to clearly capture the outer contour features of the lens. By accurately grasping the stable contour features of each lens, the system can ensure the precise alignment of the lenses during the assembly process, laying a solid foundation for subsequent assembly work.

[0055] It is particularly worth mentioning that due to the height difference generated during the layer-by-layer assembly of the lens, the traditional fixed-focus image acquisition method may not be able to meet the requirements of precise detection. Therefore, this system adopts an image acquisition module 1 with an automatic zoom function. This module can automatically adjust the focal length according to the height change of the lens to achieve fast and accurate focusing detection. This function not only improves the accuracy and efficiency of assembly but also greatly reduces the workload of manual intervention and debugging.

[0056] For the lens defect detection system:

[0057] An all-round and reliable lens defect detection system is constructed by using the image acquisition module 1 and two annular shadowless diffused light sources, namely the first annular shadowless diffused light source 3 and the second annular shadowless diffused light source 4. The characteristics of the shadowless diffused light source enable the light to irradiate the lens surface evenly and softly, reducing the interference of light spots and shadows on the detection results. By comparing the lens images under different light sources, these two light sources can accurately identify various defects on the lens, such as scratches, dirt, black spots, dust, etc., providing a strong guarantee for quality control.

[0058] However, due to the high transparency and strong reflectivity characteristics of the lens, the light spots emitted by the light source may be reflected on the lens, resulting in the covering or blurring of defect features. To solve this problem, this system adopts the strategy of turning on the two annular shadowless diffused light sources in sequence. Specifically, the image acquisition module 1 needs to take two shots: the first shot is taken when the first annular shadowless diffused light source 3 is on and the second annular shadowless diffused light source 4 is off; the second shot is taken when the second annular shadowless diffused light source 4 is on and the first annular shadowless diffused light source 3 is off. In this way, the system can obtain two sets of different image data, thus more comprehensively revealing the defect features on the lens.

[0059] In addition, in order to detect different thicknesses of the same lens or different lenses at different heights, the image acquisition module 1 also needs to adjust the focal plane. This step ensures that the system can comprehensively detect all potential defects on the lens, regardless of their position or height on the lens.

[0060] To sum up, through the collaborative work of the lens positioning and assembly system and the lens defect detection system, this system can achieve efficient assembly and precise detection of the lens. This not only improves the accuracy and efficiency of assembly but also can accurately identify various defects on the lens, providing strong support for the popularization and application of machine vision detection.

[0061] Please refer to again Figure 3, this embodiment provides the specific distance parameters between each module in the lens assembly detection integrated system and the workpiece 7 to be detected, as well as the distance parameters between the two annular shadowless diffused light sources. The setting of these parameters is crucial for ensuring the detection accuracy and stability of the system.

[0062] First, the distance between the image acquisition module 1 and the workpiece 7 to be detected is set to 211 ± 5 mm. The selection of this distance takes into account the clarity of image acquisition and the focal length range, ensuring that the image acquisition module 1 can capture clear and accurate lens images.

[0063] Second, the distance between the middle-hole surface light source 2 and the workpiece 7 to be detected is 150 ± 5 mm. This distance ensures that the light source can evenly illuminate the lens surface, providing sufficient light intensity so that the image acquisition module 1 can capture the contour features of the lens.

[0064] Next, the distances between the first annular shadowless diffused light source 3 and the second annular shadowless diffused light source 4 and the workpiece 7 to be detected are 110 ± 5 mm and 62 ± 5 mm respectively. The selection of these two distances takes into account the illumination range and intensity distribution of the light sources to ensure that the light sources can fully cover the lens surface and reduce the influence of light spots and shadows on the detection results.

[0065] Finally, the distance between the first annular shadowless diffused light source 3 and the second annular shadowless diffused light source 4 is 10 ± 2 mm. The setting of this distance helps to avoid interference and overlap between the two light sources, ensuring that clear lens images can be obtained separately when turned on in sequence.

[0066] In summary, the setting of these parameters is based on a deep understanding of the system performance requirements and the results of actual test verification. They jointly constitute the key components of the lens assembly detection integrated system, providing a strong guarantee for the efficient assembly and precise detection of lenses. In practical applications, these parameters can be fine-tuned according to specific requirements and conditions to achieve the best detection effect.

[0067] Please refer to again Figure 3 , in this embodiment, the image acquisition module 1 includes an area array camera 11 and a liquid lens 12, and this combination brings significant advantages to the lens assembly detection integrated system.

[0068] The area array camera 11, with its high resolution and fast imaging ability, ensures that the system can capture the fine features and changes on the lens surface. Its application enables the system to obtain more accurate and comprehensive image data during the lens positioning assembly and defect detection processes.

[0069] The liquid lens 12 is an innovative optical element that adjusts the refractive index by changing the surface morphology between liquid materials and the deformation generated by the electrodes. This characteristic enables the liquid lens 12 to achieve rapid electronic focusing and image imaging effects without divergence and distortion. In the lens assembly detection system, the application of the liquid lens 12 greatly improves the autofocus ability and image performance of the system, thus ensuring the accurate detection of the lens. The number of autofocus times of the liquid lens 12 = lens thickness / depth of field value in the current state of this hardware configuration.

[0070] The combination of the liquid lens 12 and the area array camera 11 enables the image acquisition module 1 to not only have the capabilities of high resolution and rapid imaging, but also possess excellent autofocus and image performance. This combination method not only improves the overall performance of the system, but also brings higher accuracy and reliability to lens assembly detection.

[0071] In addition, the dynamic adjustment ability of the liquid lens 12 enables the system to adjust the focal length and optical parameters in real time according to the characteristics of different lenses and detection requirements, thereby achieving the accurate detection of different lenses. This flexibility enables the system to adapt to a wider range of lens types and detection scenarios.

[0072] Refer again to Figures 1-2 In this embodiment, the light source lines 6 of the middle-hole surface light source 2, the first annular shadowless diffused light source 3, and the second annular shadowless diffused light source 4 are all provided with straight plugs, and plugs are inserted into the straight plugs.

[0073] It should be noted that this design brings the following several significant advantages:

[0074] First of all, by connecting the power supply through the plug, the power-on operation of the corresponding light source can be easily achieved. Once the plug is inserted into the straight plug and connected to the power supply, the corresponding light source will immediately light up and emit the required light. This method is not only easy to operate, but also can ensure the stability and reliability of the power connection.

[0075] Secondly, the combination of the straight plug and the plug makes the entire system more modular and detachable. This means that the light source can be easily replaced or adjusted according to needs without complex disassembly and reinstallation of the entire system. This not only improves the flexibility of the system, but also reduces the maintenance cost.

[0076] In addition, this design also takes into account the scalability of the system. If more light source units need to be added in the future, only the corresponding light source lines, straight plugs, and plugs need to be added, without large-scale modification of the entire system.

[0077] Although terms such as image acquisition module, mesoporous surface light source, and first annular shadowless diffused light source are used more frequently in this application, the possibility of using other terms is not excluded. The use of 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 comprehensive lens assembly detection system provided by the present utility model, by sequentially arranging an image acquisition module, a mesoporous surface light source, a first annular shadowless diffused light source, and a second annular shadowless diffused light source from top to bottom in the vertical direction, enables the image acquisition module and the mesoporous surface light source to form a lens positioning and assembly system to effectively position each lens during the lens assembly process. The image acquisition module, the first annular shadowless diffused light source, and the second annular shadowless diffused light source that are turned on in batches can form a lens defect detection system to avoid the situation of missed detection caused by defects being covered by reflective lamp beads during the detection of lens defects. Thus, it not only greatly improves the accuracy and efficiency of assembly, but also can accurately identify various defects on the lens, which is beneficial to the popularization of machine vision detection.

[0079] 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 essential concept of this application and 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 comprehensive lens assembly inspection system, characterized in that: It comprises an image acquisition module (1), a central hole surface light source (2), a first annular shadowless diffuse light source (3) and a second annular shadowless diffuse light source (4); wherein: The image acquisition module (1), the central hole surface light source (2), the first annular shadowless diffuse light source (3) and the second annular shadowless diffuse light source (4) are arranged in sequence from top to bottom in the vertical direction; The centers of the central hole surface light source (2), the first annular shadowless diffuse light source (3) and the second annular shadowless diffuse light source (4) are all provided with through holes (5); The image acquisition module (1), the through hole (5) of the first annular shadowless diffuse light source (3), the through hole (5) of the first annular shadowless diffuse light source (3), and the through hole (5) of the second annular shadowless diffuse light source (4) are coaxially arranged in a vertical direction; The image acquisition module (1) has an automatic zoom function; The image acquisition module (1) and the central hole surface light source (2) form a lens positioning assembly system; The image acquisition module (1), the first annular shadowless diffuse light source (3) and the second annular shadowless diffuse light source (4) form a lens defect detection system, and the first annular shadowless diffuse light source (3) and the second annular shadowless diffuse light source (4) are turned on in sequence.

2. The lens assembly inspection integrated system according to claim 1, characterized in that: The distance between the image acquisition module (1) and the workpiece to be detected is 211±5 mm.

3. The lens assembly inspection integrated system according to claim 1, characterized in that: The distance between the central hole surface light source (2) and the workpiece to be detected is 150±5 mm.

4. The lens assembly inspection integrated system according to claim 1, characterized in that: The distance between the first annular shadowless diffuse light source (3) and the workpiece to be inspected is 110±5 mm.

5. The lens assembly inspection integrated system according to claim 1, characterized in that: The distance between the second annular shadowless diffuse light source (4) and the workpiece to be inspected is 62±5 mm.

6. The lens assembly inspection integrated system according to claim 1, characterized in that: The distance between the first annular shadowless diffuse light source (3) and the second annular shadowless diffuse light source (4) is 10±2 mm.

7. The lens assembly inspection integrated system according to claim 1, characterized in that: The image acquisition module (1) comprises an area array camera (11) and a liquid lens (12).

8. The lens assembly inspection integrated system according to claim 1, characterized in that: The light source lines (6) of the central hole surface light source (2), the first annular shadowless diffuse light source (3) and the second annular shadowless diffuse light source (4) are all provided with direct plugs, and a plug is plugged into the direct plugs.

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