AOA multi-group lens AA equipment

Abstract

This application relates to an AOA (Optical Oriented Alignment) multi-group lens AA device for optically aligning G1 lens, G2 lens, and Prism lens. The device includes a base module, a SUT (Substrate Under Target) module slidably mounted on the base module for supporting and adjusting the orientation of the Prism lens, a Prism fixture for placing the Prism lens on the SUT module, a G1 loading module mounted on the base module and located to one side of the SUT module for adsorbing, moving, and adjusting the orientation of the G1 lens, and a G2 loading module slidably mounted on the base module and located on the SUT module opposite to the G1 loading module. The side is used to attract, move, and adjust the posture of the G2 lens; the teleconverter module is located on the base module and is set up corresponding to the Prism fixture; the G1 loading module and the G2 loading module transfer the G1 lens and the G2 lens to the Prism fixture respectively; the teleconverter module is used to acquire optical images of the Prism, G1 lens and G2 lens, and adjust their posture through the SUT module, the G1 loading module and the G2 loading module to make the optical axes of the Prism, G1 lens and G2 lens overlap and align, thereby achieving the best optical performance of the final product.

Description

Technical Field

[0001] This application relates to the field of camera assembly equipment technology, and more particularly to an AOA multi-group lens AA device. Background Technology

[0002] In the assembly process of a periscope camera, the optical system typically includes core components such as a prism, a G1 lens group, a G2 lens group, and a sensor. Its imaging quality highly depends on the precise alignment of the optical axes and the consistency of their relative positions. Traditional camera AA (Active Alignment) devices only support bidirectional active alignment between a single lens and sensor: in a calibrated system environment, using the lens or sensor as a reference, sharpness and resolution data are obtained by acquiring target images, and then a 6-DOF moving platform is driven to complete alignment, adhesive application, and UV curing.

[0003] However, when faced with a multi-component optical system containing Prism+G1+G2, traditional equipment cannot achieve synchronous alignment of the three components. It can only be assembled in steps. First, G2 is placed in the preset position through visual positioning. Then, G1 is adjusted using G2 as a reference. Finally, the Prism and the components are adapted.

[0004] This step-by-step assembly method has significant technical drawbacks: On the one hand, the G2 relies on visual positioning for mounting with limited precision, resulting in a large initial positional deviation between it and the Prism and Sensor. This not only directly affects the overall optical consistency of the Prism+G1+G2 assembly but also causes distortion and resolution reduction in the final image. On the other hand, to compensate for the mounting deviation of the G2, the G1 needs to undergo significant attitude compensation during the AA process (e.g., if the optical axis of the G2 tilts to the left, the G1 needs to tilt to the right at a larger angle). This method of adjusting by offsetting deviations can only meet the basic assembly requirements and cannot achieve precise alignment of the optical axes of each component, severely limiting the improvement of the camera's optical performance. Summary of the Invention

[0005] This application provides an AOA multi-group lens AA device, which can realize synchronous active alignment of Prism, G1 lens and G2 lens. It eliminates the cumulative error of step assembly through multi-component collaborative alignment and ensures that the optical axis centers of each component are accurately coincident.

[0006] Therefore, this application provides an AOA multi-group lens AA device for optically aligning the G1 lens, G2 lens, and Prism lens, comprising: Base module; The SUT module is slidably mounted on the base module and is used to support and adjust the posture of the Prism; the SUT module is equipped with a Prism fixture for placing the Prism. The G1 loading module is located on the base module and on one side of the SUT module. It is used to attract, move and adjust the posture of the G1 lens. The G2 loading module is slidably mounted on the base module and located on the side of the SUT module opposite to the G1 loading module. It is used to adsorb, move and adjust the posture of the G2 lens. The teleconverter module is located on the base module and is configured corresponding to the Prism fixture; The G1 loading module and the G2 loading module respectively transfer the G1 lens and the G2 lens to the Prism fixture. The teleconverter module is used to acquire optical images of the Prism, the G1 lens and the G2 lens, and to adjust their pose through the SUT module, the G1 loading module and the G2 loading module so that the optical axis centers of the Prism, the G1 lens and the G2 lens coincide at the position of the Prism fixture.

[0007] As a preferred embodiment, the G1 feeding module includes: A fixing seat is provided on the base module; The first linear module is disposed on the fixed base; The first rotary module is located at the output end of the first linear module; The first adsorber is located at the output end of the first rotating module and is used to adsorb the G1 lens.

[0008] As a preferred embodiment, the base module is provided with a first slide rail and a second slide rail along a first direction; the SUT module cooperates with the first slide rail via a first slider, and the G2 feeding module cooperates with the second slide rail via a second slider.

[0009] As a preferred embodiment, the G2 feeding module includes: The second linear module is connected to the second slider; The second rotary module is located at the output end of the second linear module; The second adsorber is located at the output end of the second rotating module and is used to adsorb the G2 lens.

[0010] As a preferred embodiment, the SUT module includes: The third linear module is connected to the first slider; The third rotary module is located at the output end of the third linear module; The Prism fixture is located at the output end of the third rotating module.

[0011] As a preferred embodiment, the teleconverter module includes: A fixing bracket is provided on the base module; The teleconverter lens is slidably mounted on the fixed frame so that its optical axis is aligned with the Prism fixture; An image sensor, connected to the optical path of the teleconverter lens, is used to acquire optical images; The visual height measurement unit is located on one side of the teleconverter lens and is configured corresponding to the Prism fixture.

[0012] As a preferred embodiment, the number of visual height measurement units is at least two, and they are arranged at intervals along the direction surrounding the teleconverter lens; each visual height measurement unit includes a visual imaging component and a laser height measurement component.

[0013] As a preferred embodiment, the SUT module further includes a PCB support platform and a PCB rotation module; the PCB support platform is used to support the image sensor and is positioned adjacent to the Prism fixture; the PCB rotation module is used to drive the PCB support platform to rotate.

[0014] As a preferred embodiment, the system also includes a UV curing module, the light outlet of which is oriented toward the Prism fixture, for curing after the optical axes of the G1 lens, the G2 lens, and the Prism are aligned.

[0015] The beneficial effects of this application are: This AOA (Optical Alignment) multi-group lens AA device is used for optical alignment of G1 lens, G2 lens, and Prism lens. It includes a base module, a SUT (Surface Mount Technology) module, a G1 loading module, a G2 loading module, and a teleconverter module. The SUT module is slidably mounted on the base module and is used to support and adjust the orientation of the Prism lens. The SUT module has a Prism fixture for placing the Prism lens. The G1 loading module is located on the base module and to one side of the SUT module, used to attract, move, and adjust the orientation of the G1 lens. The G2 loading module is slidably mounted on the base module and to the side of the SUT module opposite to the G1 loading module, used to attract, move, and adjust the orientation of the G2 lens. The teleconverter module is located on the base module and is positioned corresponding to the Prism fixture. The G1 loading module and the G2 loading module respectively transfer the G1 lens and the G2 lens to the Prism fixture. The teleconverter module is used to acquire optical images of the Prism, the G1 lens and the G2 lens, and to adjust their pose through the SUT module, the G1 loading module and the G2 loading module so that the optical axis centers of the Prism, the G1 lens and the G2 lens coincide at the position of the Prism fixture.

[0016] In this way, by pre-aligning and calibrating the Prism, the initial position and initial level of Prisms from different incoming materials can be guaranteed. Then, by using the G1 and G2 loading modules for pre-alignment and calibration, and with the cooperation of the teleconverter module, the optical axes of the G1 and G2 lenses from different incoming materials are aligned, and the initial position and angle of insertion into the Prism fixture are consistent. This ensures the initial position of the three components before AA. In this way, the cumulative error of step assembly can be eliminated through multi-component collaborative alignment, avoiding the amplification of the deviation of the initial position in the step assembly in subsequent processes, which would lead to a low yield of finished products. This reduces the rejection rate caused by AA failure, and ultimately achieves the best optical performance of the final product. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of an AOA multi-group lens AA device provided in this application; Figure 2 Another three-dimensional structural diagram of an AOA multi-group lens AA device provided in this application; Figure 3 for Figure 1 Top view; Figure 4 for Figure 1 A structural diagram of the part without the teleconverter module installed; Figure 5 for Figure 4 Top view; Figure 6 for Figure 1 Structural diagrams of the G2 loading module and the SUT module; Figure 7 for Figure 6 Side view; Figure 8 for Figure 1 Structural diagram of the G1 feeding module; Figure 9 for Figure 1 Structural diagram of the teleconverter module; Figure 10 for Figure 9 Top view.

[0019] Explanation of reference numerals in the attached figures: 10. Base module; 11. First slide rail; 12. Second slide rail; 20. SUT module; 21. Third linear module; 22. Third rotary module; 23. Prism fixture; 24. PCB rotary module; 25. PCB support platform; 30. G1 loading module; 31. Fixture; 32. First linear module; 33. First rotary module; 34. First suction unit; 40. Teleconverter module; 41. Fixture; 42. Teleconverter lens; 43. Visual height measurement unit; 50. UV curing module; 60. G2 loading module; 61. Second linear module; 62. Second rotary module; 63. Second suction unit. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0022] like Figures 1 to 10As shown, this application provides an AOA (Optical Oriented Alignment) multi-group lens AA device for optically aligning G1 lens, G2 lens, and Prism lens. It includes a base module 10, a SUT (Substrate Under Target) module 20, a G1 loading module 30, a G2 loading module 60, and a teleconverter module 40. The SUT module 20 is slidably mounted on the base module 10 and is used to support and adjust the orientation of the Prism lens. The SUT module 20 is equipped with a Prism fixture 23 for placing the Prism lens. The G1 loading module 30 is located on the base module 10 and on one side of the SUT module 20, and is used to attract, move, and adjust the orientation of the G1 lens. The G2 loading module 60 is slidably mounted on the base module 10 and is located on the side of the SUT module 20 opposite to the G1 loading module 30, and is used to attract, move, and adjust the orientation of the G2 lens. The teleconverter module 40 is located on the base module 10 and is positioned corresponding to the Prism fixture 23. The G1 loading module 30 and the G2 loading module 60 respectively transfer the G1 lens and the G2 lens to the Prism fixture 23. The teleconverter module 40 is used to acquire optical images of the Prism, the G1 lens and the G2 lens, and to perform pose adjustment through the SUT module 20, the G1 loading module 30 and the G2 loading module 60 so that the optical axis centers of the Prism, the G1 lens and the G2 lens coincide at the position of the Prism fixture 23.

[0023] Understandably, the base module 10 serves as the installation foundation for all functional modules, providing a stable mounting plane and motion reference for the SUT module 20, G1 loading module 30, G2 loading module 60, and teleconverter module 40. This ensures that the movement and adjustment of each module are based on a unified spatial coordinate system, avoiding alignment errors caused by inconsistent references.

[0024] The SUT module 20 can slide on the base module 10, and its Prism fixture 23 can securely fix the Prism. In the initial stage of the alignment process, the SUT module 20 will drive the Prism to slide to the preset alignment position, and at the same time, the Prism's posture, such as angle and height, can be initially adjusted to ensure the initial position and initial level of the Prism of different incoming materials, laying the foundation for subsequent alignment with the G1 lens and G2 lens.

[0025] The G1 loading module 30 adsorbs the G1 lens and then moves the G1 lens to one side of the Prism fixture 23. At the same time, the translation and rotation angles of the G1 lens can be adjusted independently to achieve initial alignment with the Prism. The G2 loading module 60 is symmetrically arranged with the G1 loading module 30 on the other side of the SUT module 20. It also has adsorption, transfer and attitude adjustment functions, and moves the G2 lens to the other side of the Prism fixture 23 to complete the initial spatial arrangement of the three components.

[0026] The teleconverter module 40 corresponds to the position of the Prism fixture 23 to acquire optical images of the Prism, G1 lens, and G2 lens. The SUT module 20, G1 loading module 30, and G2 loading module 60 perform pose adjustments. Specifically, the SUT module 20 fine-tunes the Prism's pose, correcting the angle and position of the Prism's optical axis; the G1 loading module 30 adjusts the G1 lens's adsorption posture and spatial position to match the Prism's optical axis; and the G2 loading module 60 slides and adjusts the G2 lens's pose to eliminate optical axis deviations from the Prism and G1 lenses. This adjustment process is repeated until the teleconverter module 40 detects that the optical axis centers of the three lenses are completely aligned with the Prism fixture 23, thus completing optical alignment.

[0027] In this way, by pre-aligning and calibrating the Prism, the initial position and initial level of the Prism from different incoming materials can be guaranteed. Then, by pre-aligning and calibrating the G1 loading module 30 and the G2 loading module 60, and with the cooperation of the teleconverter module 40, the optical axes of the G1 lens and G2 lens from different incoming materials are aligned, and the initial position and angle of the Prism fixture 23 are consistent. This ensures the initial position of the three components before AA. In this way, the cumulative error of step assembly can be eliminated by multi-component collaborative alignment, avoiding the amplification of the deviation of the initial position in the step assembly in subsequent processes, which would lead to a low yield of finished products. This reduces the rejection rate caused by AA failure, and thus achieves the best optical performance of the final product.

[0028] like Figure 8 As shown, in this embodiment, the G1 loading module 30 includes a fixed base 31, a first linear module 32, a first rotating module 33, and a first suction device 34; the fixed base 31 is disposed on the base module 10; the first linear module 32 is disposed on the fixed base 31; the first rotating module 33 is disposed at the output end of the first linear module 32; the first suction device 34 is disposed at the output end of the first rotating module 33 and is used to suction the G1 lens.

[0029] The fixed base 31 serves as the mounting base for the G1 feeding module 30 and is rigidly connected to the base module 10, providing a stable mounting reference for the first linear module 32 and preventing shaking or offset during module operation.

[0030] The first linear module 32 undertakes the core function of linear transfer. Its output end drives the first rotary module 33 and the first suction device 34 to move linearly, so as to control the spatial translation distance of the G1 lens and transfer the suctioned G1 lens from the material handling position to the preset alignment position corresponding to the Prism fixture 23 to achieve coarse positioning of the lens.

[0031] The first rotating module 33 is installed at the output end of the first linear module 32, providing the G1 lens with the freedom to adjust its angle. It can drive the first suction unit 34 and the G1 lens to rotate around the axis, correct the circumferential angle deviation of the G1 lens, and make the optical axis direction of the G1 lens initially match the optical axis angle of Prism, thus completing the coarse adjustment of the lens's attitude and reducing the amount of subsequent fine alignment adjustments.

[0032] The first adsorber 34 uses a non-contact adsorption (usually vacuum adsorption) method to grip the G1 lens. This not only securely holds the lens to prevent it from falling off during transport, but also avoids direct contact with the optical surface of the lens, preventing scratches and contamination, and ensuring that the optical performance of the lens is not damaged.

[0033] This enables the G1 lens to have multi-degree-of-freedom adjustment capabilities in translation and rotation during transport and attitude adjustment, allowing it to independently complete the entire process from material picking to rough alignment with high precision and no damage to the lens. This achieves stable bearing, precise transport, adjustable attitude, and non-destructive gripping of the G1 lens, providing a reliable pre-positioning guarantee for subsequent optical alignment with Prism and G2 lenses.

[0034] like Figure 1 As shown, in this embodiment, the base module 10 is provided with a first slide rail 11 and a second slide rail 12 along the first direction; the SUT module 20 cooperates with the first slide rail 11 through a first slider, and the G2 feeding module 60 cooperates with the second slide rail 12 through a second slider.

[0035] The first slide rail 11 and the first slider work together to drive the Prism fixture 23 to slide along the first direction, accurately moving it from the initial position to the alignment station. In conjunction with the adjustment mechanism of the SUT module 20, the Prism can be finely adjusted at multiple angles in three-dimensional space, providing the necessary degrees of freedom for optical axis alignment. Furthermore, the first slide rail 11 and the first slider together provide rigid support to ensure that the Prism will not shake during the adjustment process, maintaining the stability of the optical components and ensuring consistent production yield.

[0036] Furthermore, the cooperation between the second slide rail 12 and the second slider allows the G2 loading module 60 to move the adsorbed G2 lens from the material handling displacement to the other side of the Prism fixture 23, forming a symmetrical layout with the G1 lens. At the same time, the distance between the G2 lens and the Prism can be adjusted according to different lens and Prism specifications to adapt to various product models. Under the feedback control of the optical inspection system, multi-axis linkage adjustment with the SUT module 20 and the G1 loading module 30 is realized to eliminate optical axis deviation.

[0037] Thus, through the precise movement of the SUT module 20 and the G2 loading module 60 along the same slide rail direction, and in conjunction with the adjustment of the G1 loading module 30, the optical axes of the three optical elements (Prism, G1 lens and G2 lens) can be collinear in the same plane; and under the visual feedback of the teleconverter module 40, the three modules are simultaneously fine-tuned, ultimately making the optical axis centers of the three precisely coincide at the position of the Prism fixture 23.

[0038] like Figures 6 to 7 As shown, in this embodiment, the G2 loading module 60 includes a second linear module 61, a second rotating module 62, and a second suction device 63; the second linear module 61 is connected to the second slider; the second rotating module 62 is located at the output end of the second linear module 61; the second suction device 63 is located at the output end of the second rotating module 62 and is used to suction the G2 lens.

[0039] The second linear module 61 is rigidly connected to the second slider and can move in a high-precision linear motion along the second slide rail 12 of the base. On the one hand, it can drive the G2 lens to be smoothly moved from the material handling station to the corresponding side of the Prism fixture 23 to complete the coarse positioning of the lens; on the other hand, it can adjust the distance between the G2 lens and the Prism to adapt to the alignment requirements of optical components of different specifications, ensure the repeatability of the displacement, and avoid the impact of movement deviation on the subsequent optical alignment effect.

[0040] The second rotating module 62 is installed at the output end of the second linear module 61, providing the G2 lens with circumferential angle adjustment freedom. It can drive the second suction unit 63 and the lens to rotate around the axis, correct the angle deviation of the G2 lens itself, and make the optical axis direction of the G2 lens initially match the optical axis angle of the Prism and G1 lenses, reducing the amount of subsequent closed-loop fine adjustment and improving the overall alignment efficiency.

[0041] The second adsorbent 63 employs a non-contact vacuum adsorption design. On one hand, it securely adsorbs the G2 lens, preventing it from falling off or shifting during transport and orientation adjustment. On the other hand, it avoids direct contact with the lens's optical surface, eliminating scratches, contamination, and other problems, ensuring that the lens's optical performance is not damaged. Furthermore, the adsorption force of the second adsorbent 63 can be adjusted as needed to accommodate G2 lenses of different sizes and weights.

[0042] This allows the G2 lens to have multi-degree-of-freedom adjustment capabilities in linear translation and angular rotation. It can independently complete the actions from material handling to rough alignment, and, with image deviation feedback from the teleconverter module 40, it can achieve multi-module coordinated fine-tuning with the SUT module 20 (adjusting the Prism pose) and the G1 loading module 30 (adjusting the G1 lens pose). Ultimately, this ensures that the optical axis centers of the Prism, G1 lens, and G2 lens precisely coincide at the position of the Prism fixture 23. Simultaneously, the symmetrical design of the G2 module and the G1 loading module 30 further enhances the standardization and maintenance convenience of the equipment.

[0043] like Figures 6 to 7 As shown, in this embodiment, the SUT module 20 includes a third linear module 21 and a third rotary module 22; the third linear module 21 is connected to the first slider; the third rotary module 22 is located at the output end of the third linear module 21; wherein, the Prism fixture 23 is located at the output end of the third rotary module 22.

[0044] The third linear module 21 is rigidly connected to the first slider of the first slide rail 11 of the base, which can drive the Prism fixture 23 and the Prism to move linearly along the first direction. It can smoothly transfer the Prism from the initial loading station to the optical alignment station to complete the coarse positioning. It can also adjust the relative distance between the Prism and the G1 lens and the G2 lens to adapt to the alignment requirements of optical components of different specifications.

[0045] The third rotating module 22 is installed at the output end of the third linear module 21, providing Prism with a degree of freedom for circumferential angle adjustment. It can drive Prism fixture 23 and Prism to rotate around the axis, correcting Prism's own angular deviation, such as optical axis tilt or circumferential deflection, so that Prism's optical reference plane is initially matched with the optical axis direction of G1 lens and G2 lens.

[0046] Prism fixture 23 is located at the output end of the third rotating module 22 to clamp the Prism and prevent it from loosening or shifting during linear movement and angle adjustment, thus avoiding vibration interference with optical detection. The corresponding Prism fixture 23 can also be replaced according to different sizes and models of Prism, improving the flexible production capability of the equipment and enabling it to be compatible with multiple products without modifying the module body.

[0047] This gives Prism multi-degree-of-freedom adjustment capabilities for linear translation and angular rotation, enabling it to form a three-axis linkage adjustment system with G1 loading module 30 (for translating and rotating the G1 lens) and G2 loading module 60 (for translating and rotating the G2 lens). Furthermore, based on feedback from optical image deviation data acquired by teleconverter module 40, the three modules can be simultaneously driven to fine-tune, precisely eliminating optical axis position and angular deviations, ultimately achieving high-precision alignment of the optical axis centers of Prism, G1 lens, and G2 lens at position 23 of the Prism fixture.

[0048] Meanwhile, the cooperation with the base slide rail ensures the stability and repeatability of the Prism adjustment process, providing precision assurance for long-term continuous production and effectively improving product yield.

[0049] like Figures 9 to 10 As shown, in this embodiment, the teleconverter module 40 includes a mounting bracket 41, a teleconverter lens 42, an image sensor, and a visual height measurement unit 43; the mounting bracket 41 is disposed on the base module 10; the teleconverter lens 42 is slidably disposed on the mounting bracket 41 so as to align its optical axis with the Prism fixture 23; the image sensor is optically connected to the teleconverter lens 42 and is used to acquire optical images; the visual height measurement unit 43 is located on one side of the teleconverter lens 42 and is disposed corresponding to the Prism fixture 23.

[0050] The mounting bracket 41 is rigidly connected to the base module 10, ensuring that the relative positions of the teleconverter lens 42, image sensor, and visual height measurement unit 43 are fixed, avoiding detection errors caused by installation reference offset; it also provides guidance for the sliding of the teleconverter lens 42, ensuring the straightness and stability of the lens adjustment process, and laying the foundation for the subsequent precise alignment of the optical axis with the Prism fixture 23.

[0051] The teleconverter lens 42 is slidably mounted on the mounting bracket 41, which can magnify the optical details of the Prism, G1 lens and G2 lens, allowing the image sensor to clearly capture the edges, scribing lines or optical axis reference marks of the three, improving the recognition accuracy of minute deviations; at the same time, by sliding and adjusting its own position, the optical axis of the lens is precisely aligned with the center position of the Prism fixture 23, ensuring that the detection field of view covers the core area, and adapting to the detection needs of different specifications of optical components, such as lenses with different focal lengths and Prism of different sizes.

[0052] The image sensor is optically connected to the teleconverter lens 42, which can convert the optical image transmitted by the teleconverter lens 42 into an electrical signal and transmit it to the device controller to capture the two-dimensional pose deviation of the three in real time, including the horizontal offset of the optical axis and the angle deflection, so as to provide the controller with quantitative data for translation and rotation adjustment.

[0053] The visual height measurement unit 43 is located on one side of the teleconverter lens 42 and is set in relation to the Prism fixture 23. It can independently detect the height direction deviation of the Prism, G1 lens and G2 lens, so as to realize the full-dimensional detection of three-dimensional pose deviation and greatly improve the alignment reliability of the equipment.

[0054] During the alignment process, the teleconverter lens 42 first slides to align with the Prism fixture 23, the image sensor collects two-dimensional deviation data, and the visual height measurement unit 43 simultaneously collects height deviation data. After the control system integrates these data, it drives the SUT module 20, G1 loading module 30, and G2 loading module 60 to adjust the translation, rotation, and height positions of the Prism, G1 lens, and G2 lens, respectively, and finally achieves high-precision spatial alignment of the optical axis centers of the three lenses at the position of the Prism fixture 23.

[0055] like Figures 9 to 10 As shown, in this embodiment, the number of visual height measurement units 43 is at least two, and they are arranged at intervals along the direction surrounding the teleconverter lens 42; each visual height measurement unit 43 includes a visual imaging component and a laser height measurement component.

[0056] At least two visual height measurement units 43 are arranged around the teleconverter lens 42. Specifically, one visual height measurement unit 43 is slidably mounted on the mounting bracket 41 to cover the Prism fixture 23 from the side; the other visual height measurement unit 43 is mounted on the mounting bracket 41 to cover the Prism fixture 23 from the top. This allows the core alignment area of ​​the Prism fixture 23 to be covered from different directions, ensuring that the height measurement area completely overlaps with the imaging area of ​​the teleconverter lens 42 and the image sensor. This ensures that the height measurement data and the two-dimensional deviation data are for the same alignment position, avoiding adjustment deviations caused by misalignment of the detection position. In addition, another visual height measurement unit 43 is set to correspond with the UV curing module to assist the UV curing module in dispensing and curing, resulting in better curing effect.

[0057] Preferably, the visual imaging component and the laser height measurement component are arranged with a common optical path, so that the detection optical paths of the visual imaging component and the laser height measurement component are completely consistent. The visual imaging component can first identify the characteristic reference point of the measured object, and then guide the laser height measurement component to accurately hit the reference point, so as to achieve a seamless connection between accurate positioning and fixed-point height measurement, and avoid the height measurement failure caused by the laser hitting the non-target area.

[0058] During the alignment process, multiple sets of common-path height measurement units work together with the teleconverter lens 42 and the image sensor to synchronously output all key deviation parameters such as horizontal offset, angle deflection, height difference, and tilt angle of the three components. This drives the SUT module 20, G1 loading module 30, and G2 loading module 60 to perform targeted translation, rotation, and height adjustment, ultimately achieving high-precision alignment of the optical axes of the three components at the same point in space, significantly improving the optical alignment accuracy of the equipment and the product yield.

[0059] like Figure 7 As shown, in this embodiment, the SUT module 20 further includes a PCB support platform 25 and a PCB rotation module 24; the PCB support platform 25 is used to support the image sensor and is disposed adjacent to the Prism fixture 23; the PCB rotation module 24 is used to drive the PCB support platform 25 to rotate.

[0060] The PCB support platform 25 is used to support the image sensor and is positioned adjacent to the Prism fixture 23. This significantly shortens the optical path length between the image sensor and the Prism, G1 lens, and G2 lens, reducing energy loss and stray light interference during optical transmission. This allows the image sensor to capture clearer optical images with a higher signal-to-noise ratio. Simultaneously, it provides a rigid mounting reference for the image sensor, preventing displacement or shaking due to vibration or module adjustments during equipment operation, thus ensuring the stability and repeatability of the detection data.

[0061] Furthermore, the PCB rotation module 24 can drive the PCB carrier platform 25 and the image sensor to rotate, adjusting the optical receiving angle of the image sensor to precisely match the reflected light path angle of the Prism. Since the reflection angle of the Prism changes with its slight orientation adjustments, the image sensor, through synchronous rotation, can always maintain perpendicular alignment with the reflected light path or the optimal receiving angle, avoiding image blurring and data distortion caused by light path misalignment. Moreover, for Prisms with different reflection characteristics (such as prisms with different apex angles), there is no need to replace the image sensor or adjust the teleconverter module 40; simply adjusting the sensor angle via the PCB rotation module 24 is sufficient to adapt to different optical path schemes, reducing equipment changeover costs.

[0062] It is known that the PCB support platform 25 and the rotating module are integrated with the original third linear module 21 and third rotating module 22 of the SUT module 20, realizing the linkage control of Prism attitude adjustment and image sensor angle adjustment. When the controller drives the SUT module 20 to fine-tune the Prism pose, the PCB rotating module 24 can synchronously adjust the image sensor angle to ensure that the detection optical path is always in the optimal state, greatly reducing the adjustment lag or error caused by optical path mismatch.

[0063] like Figure 9 and Figure 10 As shown, in this embodiment, a UV curing module is also included. The light outlet of the UV curing module is arranged facing the Prism fixture 23, and is used to perform curing after the optical axis alignment of the G1 lens, the G2 lens and the Prism is completed.

[0064] After the G1 and G2 lenses are precisely aligned with the Prism and their optical axes are aligned, and the pre-AA process is completed, the SUT module 20 moves the Prism to the dispensing position. After dispensing height measurement, dispensing is performed on the G1 and G2 glue slots on the Prism fixture 23, followed by visual inspection of the glue pattern by taking a photograph. After the glue application is complete, the SUT module 20 transfers the Prism back to the pre-AA position and takes another image to check its AA effect. The UV lamp of the UV curing module is turned on to illuminate the two sets of glue bonding surfaces of G1 and Prism, and G2 and Prism, for UV curing. After curing, the relative spatial positions of the three components are permanently locked to prevent displacement or loosening during subsequent handling and assembly. Then, the G1 loading module 30 and G2 loading module 60 are removed, and the AA-finished product remains on the SUT module 20 and is unloaded by the automatic unloading mechanism.

[0065] In this embodiment, the Prism fixture 23 includes a positioning base, which is integrally formed with a Prism groove for accommodating the Prism, a G1 lens groove for accommodating the G1 lens, and a G2 lens groove for accommodating the G2 lens.

[0066] The three integrated grooves have their relative positional accuracy determined during the manufacturing stage, ensuring that the initial placement of the Prism, G1 lens, and G2 lens is based on the same rigid reference. This avoids the cumulative errors caused by the assembly of multiple parts in a separate fixture, thus guaranteeing the consistency of their spatial relative positions. This significantly reduces the difficulty of optical alignment adjustments, improves alignment accuracy and stability, and lays a high-precision foundation for subsequent optical axis fine-tuning.

[0067] The size and shape of each tank are precisely matched with the corresponding components (Prism, G1 lens, G2 lens), which can not only stably support the components, but also appropriately constrain the translational and rotational degrees of freedom of the components. This prevents the components from becoming loose or shifting during the positioning adjustment of the SUT module 20, G1 loading module 30 and G2 loading module 60, as well as during the waiting stage before UV curing, thus eliminating alignment failures caused by component displacement.

[0068] Meanwhile, the preset tank positions provide clear target workstations for the G1 loading module 30 and G2 loading module 60. The two loading modules only need to move the lens to the corresponding tank position to complete coarse positioning, eliminating the need for extensive position searching and adjustments. Furthermore, the guiding effect of the tank allows components to quickly fall into the preset positions, significantly shortening the coarse positioning time for a single product and improving the overall processing efficiency of the equipment. Moreover, the fixed positions of each component within the tank result in more uniform coating area and thickness of the adhesive layer during UV curing. The shrinkage stress generated during curing is dispersed by the limiting effect of the tank, preventing micro-deformation or positional drift of components due to stress concentration.

[0069] In addition, the positioning base is an integrated structure with stronger rigidity, which is not easily deformed due to repeated clamping of components and can maintain the positional accuracy of the tank for a long time. At the same time, when it is necessary to adapt to different specifications of Prism, G1 and G2 lenses, only the overall positioning base needs to be replaced, without adjusting other parts of the fixture, which greatly reduces the time cost and maintenance difficulty of equipment changeover.

[0070] In this way, by improving the initial positioning accuracy of each tank, the detection difficulty of the teleconverter module 40 and the fine adjustment range of each adjustment module are reduced, allowing the optical axes of the three to achieve precise alignment more quickly; at the same time, the stable placement effect ensures the stability of the UV curing process.

[0071] In this embodiment, a controller is also included, which is electrically connected to the image sensor and the visual height measurement unit 43 respectively. The controller is configured to generate control commands based on the optical axis coincidence information collected by the image sensor and the height information collected by the visual height measurement unit 43, and drive the SUT module 20, the G1 loading module 30 and the G2 loading module 60 to perform linkage pose adjustment.

[0072] The controller is also electrically connected to the UV curing module, and the controller is also configured to automatically start the UV curing module after confirming, based on feedback from the image sensor, that the optical axis center coincides with a preset accuracy.

[0073] When assembling multiple groups of lenses using this AOA (Automatic Anchoring) multi-group lens AA equipment, the specific steps are as follows: The Prism (optical prism) is mounted on the Prism fixture 23, and the G1 lens and G2 lens are respectively attached to the first suction device 34 and the second suction device 63, corresponding to the Prism fixture 23. The Prism surface is visually positioned by a top camera, and the Prism upper surface is multi-point height measured by a top laser sensor. With the help of vision and laser, the initial position and angle offset after different Prisms are loaded can be measured and fed back to the SUT module 20 for compensation. The SUT module 20, the G1 loading module 30, and the G2 loading module 60 slide to allow the Prism, the G1 lens, and the G2 lens to initially meet in space. The G1 light-transmitting aperture is visually positioned using a side-mounted visual imaging component (e.g., a camera), and the G1 side reference plane is measured at multiple points using a side-mounted laser height measurement component (e.g., a laser sensor). Through visual and laser measurements, the initial position and angular offset of different G1 lenses after loading can be measured and fed back to the G1 loading module 30 for compensation. The side vision imaging component (such as a camera) is used to visually locate the light-transmitting hole of G2, and the side laser height measurement component (such as a laser sensor) is used to measure the height of the side reference surface of G2 at multiple points. With the help of vision and laser, the initial position and angle deviation of different G2 lenses after loading can be measured and fed back to the G2 loading module 60 for compensation. The attitude of the Prism, G1 lens, and G2 lens is adjusted by the linear and rotary modules in the G1 loading module 30, G2 loading module 60, and SUT module 20, so that the three are in a relatively optimal assembly position. Then, the teleconverter module 40 acquires images and moves back and forth to scan the TF curve to obtain the optical path information of the Prism, G1 lens, and G2 lens, so as to achieve six degrees of freedom active alignment of the Prism, G1 lens, and G2 lens. The G1 loading module 30, G2 loading module 60, and SUT module 20 are adjusted back and forth multiple times to make the Prism, G1 lens, and G2 lens in the best imaging position on the Prism fixture 23, achieving the best optical effect. It can be seen that during AA, the dynamic independent adjustment of the G1 loading module 30, G2 loading module 60, and SUT module 20 can be performed simultaneously to achieve the assembly with the best optical performance. By pre-aligning and calibrating the Prism, the initial position and initial level of the Prism from different incoming materials can be guaranteed. Then, by pre-aligning and calibrating the lenses G1 and G2, the optical axes of the lenses from different incoming materials are aligned, and the initial position and angle of the Prism fixture 23 are consistent. This ensures the initial position of the three components before AA. In this way, the cumulative error of step assembly can be eliminated through multi-component collaborative alignment. This avoids the deviation of the initial position in step assembly from being amplified in subsequent processes, resulting in a low yield of finished products, thereby reducing the rejection rate caused by AA failure.

[0074] At the AA alignment position, the lens assembly is glued and cured. After pre-AA, the SUT module 20 moves the Prism to the glue dispensing position. After glue dispensing height measurement, glue is dispensed at the G1 and G2 glue tank positions on the Prism fixture 23, followed by visual imaging to check the glue pattern after glue dispensing. After glue dispensing, the SUT module 20 transfers the Prism back to the pre-AA position, takes another image, and checks the AA effect. Then, the SUT module 20 returns to the glue dispensing position, turns on the UV lamp, and illuminates the two sets of glue bonding surfaces of the G1 lens and Prism, and the G2 lens and Prism, for UV curing. After curing, the G1 loading module 30 and G2 loading module 60 are removed, and the AA-finished product remains on the SUT module 20 and is unloaded by the automatic unloading mechanism. Thus, by assembling the Prism, G1, and G2 lenses simultaneously via AA (Automatic Assembly), the assembly process is effectively shortened, the impact of cumulative errors from step-by-step assembly on precision is reduced, and the optical performance of the camera is further improved. Furthermore, simultaneous AA assembly of all three components reduces assembly steps, significantly reduces the space required, increases UPH output per unit area, and lowers production costs.

[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0077] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0079] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0080] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An AOA (Optical Alignment) multi-group lens AA device for optically aligning G1 lens, G2 lens, and Prism lens, characterized in that, include: Base module; The SUT module is slidably mounted on the base module and is used to support and adjust the posture of the Prism. The SUT module is equipped with a Prism fixture for placing Prism; The G1 loading module is located on the base module and on one side of the SUT module. It is used to attract, move and adjust the posture of the G1 lens. The G2 loading module is slidably mounted on the base module and located on the side of the SUT module opposite to the G1 loading module. It is used to adsorb, move and adjust the posture of the G2 lens. A teleconverter module is disposed on the base module and is configured corresponding to the Prism fixture; the teleconverter module includes a teleconverter lens and an image sensor for acquiring optical images, as well as at least two visual height measurement units arranged at intervals along the direction surrounding the teleconverter lens. The controller is electrically connected to the image sensor and each of the visual height measurement units, respectively. The G1 loading module and the G2 loading module respectively transfer the G1 lens and the G2 lens to the Prism fixture. The controller is configured to drive the SUT module, the G1 loading module and the G2 loading module to perform coordinated pose adjustment based on the optical axis coincidence information reflected by the optical image collected by the image sensor and the height information collected by the visual height measurement unit, so that the optical axis centers of the Prism, the G1 lens and the G2 lens coincide at the position of the Prism fixture.

2. The AOA multi-group lens AA device according to claim 1, characterized in that, The G1 feeding module includes: A fixing seat is provided on the base module; The first linear module is disposed on the fixed base; The first rotary module is located at the output end of the first linear module; The first adsorber is located at the output end of the first rotating module and is used to adsorb the G1 lens.

3. The AOA multi-group lens AA device according to claim 1, characterized in that, The base module is provided with a first slide rail and a second slide rail along a first direction; the SUT module cooperates with the first slide rail through a first slider, and the G2 feeding module cooperates with the second slide rail through a second slider.

4. The AOA multi-group lens AA device according to claim 3, characterized in that, The G2 feeding module includes: The second linear module is connected to the second slider; The second rotary module is located at the output end of the second linear module; The second adsorber is located at the output end of the second rotating module and is used to adsorb the G2 lens.

5. The AOA multi-group lens AA device according to claim 3, characterized in that, The SUT module includes: The third linear module is connected to the first slider; The third rotary module is located at the output end of the third linear module; The Prism fixture is located at the output end of the third rotating module.

6. The AOA multi-group lens AA device according to claim 1, characterized in that, The teleconverter module includes: A fixing bracket is provided on the base module; The teleconverter lens is slidably mounted on the fixed frame so that its optical axis is aligned with the Prism fixture; An image sensor, connected to the optical path of the teleconverter lens, is used to acquire optical images; The visual height measurement unit is located on one side of the teleconverter lens and is configured corresponding to the Prism fixture.

7. The AOA multi-group lens AA device according to claim 6, characterized in that, Each of the visual height measurement units includes a visual imaging component and a laser height measurement component.

8. The AOA multi-group lens AA device according to claim 6, characterized in that, The SUT module also includes a PCB support platform and a PCB rotation module; The PCB carrier platform is used to carry the image sensor and is located adjacent to the Prism fixture; the PCB rotation module is used to drive the PCB carrier platform to rotate.

9. The AOA multi-group lens AA device according to claim 1, characterized in that, It also includes a UV curing module, the light outlet of which is positioned facing the Prism fixture, and is used to perform curing after the optical axes of the G1 lens, the G2 lens and the Prism are aligned.

Images