Camera module assembly method and camera module assembly equipment

Abstract

The present invention relates to a camera module assembly method and camera module assembly equipment. The camera module assembly method, applied to the camera module assembly equipment, comprises the following steps: actively aligning a lens and a normally open image chip to obtain a first positional relationship between the lens and the normally open image chip; determining a third positional relationship between the lens and a motor based on the first positional relationship and a second positional relationship; adjusting the vertical position and tilt angle of the lens based on the third positional relationship to assemble the lens into the motor; and transferring the positional relationship using the normally open image chip as a reference, thereby determining the position and angle of the lens when it is assembled into the motor through a positional relationship transfer chain, so that the position of the lens is determined before insertion, eliminating the need to retain adjustment margin in the motor, thereby facilitating miniaturization of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field related to camera module assembly, and in particular to a camera module assembly method and camera module assembly equipment. Background Art

[0002] In the field of modern imaging technology, camera modules are widely used in various electronic devices, including smartphones, tablets, and security surveillance systems. As consumers' demand for thin, lightweight, and portable electronic devices continues to increase, miniaturization of camera modules has become an inevitable trend in the industry. To ensure that camera modules capture clear, high-quality images, active alignment (AA) technology plays a key role. This technology precisely adjusts the lens's (LENS) linear degrees of freedom (X, Y, and Z) and its rotational degrees of freedom (θx, θy, and θz) to achieve concentricity between the lens' optical axis and the vertical axis of the image sensor, effectively reducing image distortion and improving image quality.

[0003] However, existing camera module assembly processes face numerous technical bottlenecks in meeting miniaturization requirements. On the one hand, the shrinking size of camera modules has resulted in an extremely compact layout of internal components, significantly reducing the space available for active lens adjustment. Traditional adjustment equipment and methods struggle to achieve high-precision six-degree-of-freedom adjustment within this confined space. On the other hand, miniaturized camera modules require even higher assembly precision for each component. Even minor assembly errors can lead to concentricity deviations between the lens' optical axis and the image sensor's vertical axis, compromising imaging quality. Existing assembly processes struggle to maintain high precision while meeting the demands of mass production for miniaturized camera modules.

[0004] Therefore, how to improve the existing camera module assembly process so that it can meet the needs of active adjustment accuracy while also meeting the needs of miniaturization of the camera module has become a technical problem that needs to be urgently solved in this field. Summary of the Invention

[0005] Based on this, it is necessary to provide a camera module assembly method and camera module assembly equipment that require less space inside the motor to address the problems that the current module assembly process requires a large space inside the motor, which is not conducive to motor miniaturization.

[0006] The present application first provides a camera module assembly method, which is applied to a camera module assembly device. The camera module assembly method comprises the following steps:

[0007] Actively aligning the lens and the normally-open image chip to obtain a first positional relationship between the lens and the normally-open image chip, the first positional relationship including first coordinate information and first angle information of the lens after active alignment;

[0008] Determining a third positional relationship between the lens and the motor based on the first positional relationship and the second positional relationship, wherein the second positional relationship includes relative coordinate information and a relative tilt angle between the photosensitive surface of the normally-open image chip and a reference bottom surface of a motor fixture, and the third positional relationship includes second coordinate information and second angle information of the lens when the lens is assembled into the motor, and the reference bottom surface of the motor fixture is used to place the motor;

[0009] Keeping the position and tilt angle of the reference bottom surface unchanged, adjusting the horizontal position of the lens according to the second coordinate information so that the lens and the motor are located in the same vertical direction;

[0010] A vertical position and a tilt angle of the lens are adjusted based on the second coordinate information and the second angle information, so as to assemble the lens into the motor.

[0011] In one embodiment, the normally-on image chip and the motor fixture are fixed on the same multi-dimensional correction platform. Before the step of "determining a third positional relationship between the lens and the motor based on the first positional relationship and the second positional relationship", the camera module assembly method further includes:

[0012] The coordinates and tilt angles of the photosensitive surface and the reference bottom surface are calibrated using a visual laser module to obtain the second positional relationship.

[0013] In one embodiment, before the step of "actively aligning the lens and the normally-on image chip", the method further includes:

[0014] The lens is visually positioned and its posture adjusted so that the horizontal reference plane of the lens is flush with the target plate or the photosensitive surface. The horizontal reference plane is perpendicular to the optical axis of the lens. The target plate is used for active alignment between the lens and the normally open image chip.

[0015] In one embodiment, the step of "actively aligning the lens and the normally-on image chip" includes:

[0016] Moving the lens and the normally open image chip to positions corresponding to the target plate;

[0017] By adjusting the position or tilt angle of the lens or the normally-open image chip, the image of the target plate acquired by the normally-open image chip can meet the preset requirements.

[0018] In one embodiment, after the step of “adjusting the vertical position and tilt angle of the lens based on the second coordinate information and the second angle information to assemble the lens into the motor”, the step further includes:

[0019] The second coordinate information and the second angle information between the lens and the motor are maintained, and the lens and the motor are bonded and fixed to obtain a motor assembly.

[0020] In one embodiment, after the step of “maintaining the second coordinate information and the second angle information between the lens and the motor, and bonding and fixing the lens and the motor to obtain a motor assembly”, the method further includes:

[0021] curing the glue in the motor assembly by an exposure lamp;

[0022] After the exposure is completed, the motor assembly is subjected to automatic optical inspection.

[0023] In one embodiment, before the step of “adjusting the vertical position and tilt angle of the lens based on the second coordinate information and the second angle information to assemble the lens into the motor”, the method further includes:

[0024] Moving the lens and the normally-on image chip to positions corresponding to a detection light source, wherein the detection light source is used to provide multiple illumination environments;

[0025] The lens is subjected to bad pixel detection based on images captured by the normally-on image chip under the multiple illumination environments.

[0026] In one embodiment, before the step of "actively aligning the lens and the normally-on image chip", the method further includes:

[0027] Automatic optical inspection is performed on the lens.

[0028] The present application also provides a camera module assembly device, comprising:

[0029] frame;

[0030] An active alignment structure is provided on the frame, comprising a first multi-dimensional correction module and a second multi-dimensional correction module, wherein a lens pick-up and placement member for picking up and placing a lens is fixed to a first adjustment portion of the first multi-dimensional correction module, and a normally open image chip and a motor fixture for accommodating a motor are fixed to a second adjustment portion of the second multi-dimensional correction module, wherein the first multi-dimensional correction module and the second multi-dimensional correction module are configured to: respectively drive the first adjustment portion and the second adjustment portion to move along multi-dimensional directions to actively calibrate the lens extracted by the lens pick-up and placement member and the normally open image chip, determine the positional relationship between the lens and the motor when the lens is installed in the motor, and install the lens into the motor accommodated in the motor fixture based on the positional relationship; and

[0031] A glue dispensing structure is provided on the frame and is used for fixing the motor and the lens installed in the motor by glue dispensing.

[0032] In one embodiment, the active alignment structure further includes a movable platform, which includes a fixed part fixed to the frame and a sliding part slidably connected to the fixed part, and the first multi-dimensional correction module and the second multi-dimensional correction module are both arranged on the sliding part.

[0033] In one embodiment, the dispensing structure includes a dispensing slide, a dispensing part and a glue cleaning part. The dispensing slide is fixed to the frame, the glue cleaning part is fixed to the dispensing slide, and the dispensing part is slidably connected to the dispensing slide and is located on the upper side of the glue cleaning part, so that the dispensing part can move along the dispensing slide to directly above the glue cleaning part; the movable platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to the corresponding position of the dispensing structure.

[0034] In one embodiment, the camera module assembly equipment also includes the light source target plate structure, which includes a target plate, a lifting module, a teleconverter module and a detection light source, the teleconverter module and the detection light source are arranged in the fixed part, the supporting end of the lifting module is fixed to the frame, and the target plate is fixed to the lifting end of the lifting module, so as to drive the target plate to be lifted and lowered along the third direction through the lifting module; the target plate is located on the upper side of the teleconverter module and the detection light source along the third direction, and the teleconverter module and the detection light source are arranged on the upper side of the active alignment structure along the third direction; the movable sub-platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to the positions corresponding to the teleconverter module or the detection light source.

[0035] In one embodiment, the camera module assembly equipment further includes a gantry loading and unloading structure, the gantry loading and unloading structure including a first automatic optical inspection module, a second automatic optical inspection module, an exposure light module, a slide rail module, and a nozzle module, wherein the first automatic optical inspection module, the second automatic optical inspection module, and the exposure light module are all arranged on the slide rail module, the nozzle module is slidably connected to the slide rail module, and the nozzle module and other modules of the gantry loading and unloading structure do not overlap in projection along a direction perpendicular to the third direction;

[0036] The movable platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to positions corresponding to the exposure lamp module or the suction nozzle module along the third direction.

[0037] In one embodiment, the lens picking and placing component includes a lens suction nozzle, which is provided with a first opening and a plurality of second openings located around the first opening, the first opening is used to suck the lens, and the plurality of second openings correspond to the dispensing positions of the lens.

[0038] The above-mentioned camera module assembly method uses the normally open image chip as a reference to transfer the position relationship, thereby determining the position and angle of the lens when it is inserted into the motor through the position relationship transmission chain, so that the posture of the lens is determined before insertion, and there is no need to retain adjustment margin in the motor. It can meet the needs of active adjustment accuracy while meeting the miniaturization of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A three-dimensional diagram of the camera module assembly equipment for this application;

[0040] Figure 2 for Figure 1 A three-dimensional diagram of the active alignment structure and part of the light source target structure;

[0041] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0042] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0043] Figure 5 for Figure 1 A three-dimensional diagram of the loading and unloading structure of the middle gantry;

[0044] Figure 6 for Figure 1 A three-dimensional diagram of the mid-point glue structure;

[0045] Figure 7 for Figure 1 A three-dimensional diagram of the middle frame, part of the light source target plate structure, and the silo loading and unloading structure;

[0046] Figure 8 for Figure 1 A three-dimensional diagram of the middle material tray transfer structure;

[0047] Figure 9 for Figure 8 Schematic diagram of the first tray transfer module in the absence of a tray;

[0048] Figure 10 for Figure 8 Schematic diagram of the first tray transfer module when the stop block 619 is restricted by the stop limit plate 617;

[0049] Figure 11 for Figure 8Schematic diagram of the first tray transfer module when the tray is in contact with the tray pressing block 614;

[0050] Figure 12 This is a flow chart of one embodiment of the camera module assembly method of the present application;

[0051] Figure 13 This is a partial flow chart of another embodiment of the camera module assembly method of the present application;

[0052] Figure 14 This is a partial flow chart of another embodiment of the camera module assembly method of the present application;

[0053] Figure 15 This is a partial flow chart of another embodiment of the camera module assembly method of the present application;

[0054] Figure 16 This is a partial flow chart of another embodiment of the camera module assembly method of the present application;

[0055] Figure 17 This is a partial flow chart of another embodiment of the camera module assembly method of the present application.

[0056] Figure numerals: 100, frame; 200, active alignment structure; 210, first multi-dimensional correction module; 211, first adjustment part; 211a, lens pick-up and placement member; 212, first support part; 220, second multi-dimensional correction module; 221, second adjustment part; 221a, motor clamp; 221a1, first opening; 221a2, second opening; 221b, chip fixture; 222, second support part; 230, mover platform; 240, lens transfer module; 250, visual laser module; 300, dispensing structure; 310, dispensing slide rail; 320, dispensing part; 330, dispensing cylinder; 400, gantry loading and unloading structure; 410, first automatic optical inspection module; 420, second automatic optical inspection module; 430, Exposure lamp module; 440, slide rail module; 450, nozzle module; 500, light source mark plate structure; 510, mark plate; 520, lifting module; 530, teleconverter module; 540, detection light source; 600, tray transfer structure; 610, first tray transfer module; 611, tray support plate; 612, support plate bracket; 613, moving axis; 614, tray pressure block; 615, clamping slider; 616, spring; 617, stop limit plate; 618, stop fixed bracket; 619, block; 620, second tray transfer module; 700, silo loading and unloading structure; 710, first silo loading and unloading module; 711, first silo; 712, assembly line connection part; 720, second silo loading and unloading module; 721, second silo. DETAILED DESCRIPTION

[0057] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0060] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0062] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0063] For the sake of convenience of description, in this application, two directions parallel to the horizontal plane and parallel to each other are defined as the first direction and the second direction, the direction perpendicular to the horizontal plane is defined as the third direction, and the first direction, the second direction and the third direction are defined as three-axis directions, and movement along the three-axis directions and rotation around the three-axis directions are defined as multi-dimensional motion.

[0064] Furthermore, the term "flush" in the embodiments of the present application refers to approximately flush, and process tolerances are acceptable. For example, an angle between two surfaces within ±5° falls within the "flush" range of the embodiments of the present application. Similarly, "perpendicular" in the embodiments of the present application can be understood as approximately perpendicular, for example, perpendicular in the embodiments of the present application can fall within the range of 85°-95°.

[0065] Please combine Figure 1 、 Figure 2 as well as Figure 3 As shown, the present application provides a camera module assembly device, comprising: a frame 100; an active alignment structure 200, which is arranged on the frame 100, and includes a first multi-dimensional correction module 210 and a second multi-dimensional correction module 220, wherein the first adjustment portion 211 of the first multi-dimensional correction module 210 is fixed with a lens placement member 211a for placing and taking the lens, and the second adjustment portion 221 of the second multi-dimensional correction module 220 is fixed with a normally open image chip and a motor fixture 221a for accommodating the motor, and the first multi-dimensional correction module 2 10 and the second multi-dimensional correction module 220 can respectively drive the first adjustment part 211 and the second adjustment part 221 to move in multi-dimensional directions to actively calibrate the lens extracted by the lens placement component 211a and the normally open image chip, determine the positional relationship between the lens and the motor when the lens is installed in the motor, and install the lens into the motor accommodated in the motor fixture 221a based on the positional relationship; and a glue dispensing structure 300, which is arranged on the frame 100 and is used to glue and fix the motor and the lens installed in the motor.

[0066] The always-on image chip is a sensor that continuously captures images, maintaining an "always-on" state while consuming very low power, allowing it to respond to visual information in real time. The positional relationship between the lens and motor can be found in the third positional relationship described below and will not be detailed here.

[0067] Furthermore, the active alignment structure 200 also includes a movable sub-platform 230, which includes a fixed portion fixed to the frame 100 and a sliding portion slidably connected to the fixed portion. The first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are both disposed on the sliding portion of the movable sub-platform 230, so that the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 can be moved to positions corresponding to the light source target module via the sliding portion of the movable sub-platform 230 for active alignment, or the motor fixtures 221a of the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 can be moved to positions corresponding to the dispensing structure 300. The movement of the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to positions corresponding to the light source target module refers to the movement of the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to below the light source target module. Specifically, the lens pick-up and placement component 211a, the motor fixture 221a, and the target plate and / or teleconverter of the light source target plate module are in the same vertical direction. Since the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 move to the position corresponding to the light source target plate module for active alignment, this position can also be called an active alignment station. The first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 move to the position corresponding to the dispensing structure 300, which means that the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 move to the bottom of the dispensing structure 300. Specifically, the lens pick-up and placement component 211a, the motor fixture 221a, and the dispensing head of the dispensing structure 300 are in the same vertical direction. Since the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 move to the position corresponding to the dispensing structure 300 for dispensing, this position can also be called a dispensing station.

[0068] For the convenience of description, the sliding direction of the sliding portion of the movable platform 230 is defined as a first direction, and the direction perpendicular to the first direction and the third direction is defined as a second direction.

[0069] It should be understandable that since the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are both arranged on the sliding part of the movable platform 230, the two multi-dimensional correction modules can be kept relatively fixed after the active alignment is completed, that is, the adjustment parts of the two multi-dimensional correction modules are no longer adjusted, and the sliding part of the movable platform 230 drives the two multi-dimensional correction modules to move to the dispensing station, which can ensure the consistency of the posture of the two multi-dimensional correction modules at the active alignment station and the dispensing station, avoid introducing movement deviation, and improve the installation accuracy between the lens and the motor.

[0070] In addition, the sliding portion of the movable platform 230 is used to drive the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to switch between the active alignment station and the dispensing station, thereby meeting the requirements of multi-step parallelization, reducing equipment idle time, and improving production efficiency. Furthermore, the active alignment structure 200 also includes a lens transfer module 240 and a visual laser module 250. The second multi-dimensional correction module 220, the lens transfer module 240, and the visual laser module 250 are all fixed to the sliding portion of the movable platform 230. The first multi-dimensional correction module 210 is movably disposed on the sliding portion of the movable platform 230. The second multi-dimensional correction module 220, the lens transfer module 240, and the visual laser module 250 are distributed along a first direction, so that by moving the position of the first multi-dimensional correction module 210, the lens placement member 211a is moved to the position corresponding to the lens transfer module 240, the position corresponding to the visual laser module 250, or the position corresponding to the normally open image chip. Among them, the movement of the lens pick-up and placement member 211a to the position corresponding to the lens transfer module 240 means that the lens pick-up and placement member 211a moves to the position directly above the lens transfer module 240, that is, the lens pick-up and placement member 211a and the lens transfer module 240 overlap along the third direction. The movement of the lens pick-up and placement member 211a to the position corresponding to the visual laser module 250 means that the lens pick-up and placement member 211a moves to the position directly above the visual laser module 250, that is, the lens pick-up and placement member 211a and the visual laser module 250 overlap along the third direction. The movement of the lens pick-up and placement member 211a to the position corresponding to the normally-open image chip means that the lens pick-up and placement member 211a moves to the position directly above the normally-open image chip, that is, the lens pick-up and placement member 211a and the normally-open image chip overlap along the third direction.

[0071] Please refer to Figure 3 As shown, in some embodiments, the first multi-dimensional correction module 210 includes a first supporting portion 212 and a first adjusting portion 211, the lens picking and placing component 211a is a lens nozzle, the first supporting portion 212 is slidably disposed on the movable platform 230, the first supporting portion 212 can slide along a first direction relative to the movable platform 230, the first adjusting portion 211 can move along multi-dimensional directions relative to the first supporting portion 212, and the lens nozzle is disposed on the first adjusting portion 211 to adjust the multi-dimensional parameters of the lens nozzle through the first adjusting portion 211, thereby realizing adjustment of the lens position and angle.

[0072] For details, please combine Figure 3 as well as Figure 4As shown, the lens nozzle extends along the second direction and overlaps with the second multi-dimensional correction module 220, the lens transfer module 240 or the visual laser module 250 along the third direction (i.e., the vertical direction). The lens nozzle is provided with a first opening 221a1, which can also be referred to as the middle opening of the lens nozzle. On the one hand, it is used to absorb the lens, and on the other hand, it can prevent the lens from being blocked during active alignment. In addition, the lens nozzle is further provided with a plurality of second openings 221a2 around the first opening 221a1. The plurality of second openings 221a2 correspond to the lens dispensing positions to facilitate dispensing. For example, the lens nozzle is provided with four second openings 221a2 around the first opening 221a1. These four second openings 221a2 can be evenly distributed along the circumference of the first opening 221a1. The diameter of the first opening 221a1 is larger than the diameter of the second opening. When the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are located at the dispensing station, the dispensing head of the dispensing structure 300 overlaps with the second opening 221a2 along the third direction.

[0073] Of course, in some other embodiments, the lens pick-up and placement member 211a may also be a flexible robotic arm or other parts transfer structure, as long as it can pick up and place the lens as needed without causing damage to the lens.

[0074] Please refer to Figure 3 As shown, in some embodiments, the second multi-dimensional correction module 220 includes a second support portion 222 and a second adjustment portion 221, the second support portion 222 is fixed to the movable platform 230, and the second adjustment portion 221 can move in multi-dimensional directions relative to the second support portion 222, and the second adjustment portion 221 is fixed with a chip fixture 221b and a motor fixture 221a distributed along the first direction, wherein the chip fixture 221b is provided with a normally open chip in a power-on state, and the motor fixture 221a is used to accommodate the motor to be assembled.

[0075] Please refer to Figure 6 As shown, in some embodiments, the glue dispensing structure 300 includes a glue dispensing slide 310, a glue dispensing unit 320 and a glue cleaning unit. The glue dispensing slide 310 is fixed to the frame 100, the glue cleaning unit is fixed to the glue dispensing slide 310, and the glue dispensing unit 320 is slidably connected to the glue dispensing slide 310 and is located on the upper side of the glue cleaning unit, so that the glue dispensing unit 320 can move along the glue dispensing slide 310 to directly above the glue cleaning unit.

[0076] Specifically, the glue dispensing structure 300 also includes a glue dispensing cylinder 330, which is slidably connected to the glue dispensing slide rail 310, and the glue dispensing part 320 is arranged at the moving end of the glue dispensing cylinder 330 to drive the glue dispensing part 320 to move along the third direction and perform glue dispensing when the lens nozzle reaches the glue dispensing position (the glue dispensing part 320, the motor clamp 221a and the lens nozzle overlap along the third direction), so as to glue and bond the motor and lens to be assembled to obtain a motor assembly.

[0077] In addition, the dispensing structure 300 further includes a dispensing vision module to enable the dispensing head of the dispensing portion 320 to be aligned with the dispensing position of the lens (or the second opening 221a2 on the lens nozzle).

[0078] For ease of description, in this application, the tray for placing the motor to be assembled is defined as the first tray, the tray for placing the lens is defined as the second tray, and the tray for placing the assembled motor assembly is defined as the third tray. It should be understood that the first tray, the second tray, and the third tray in this application are used to distinguish the products carried by the trays. The first tray, the second tray, and the third tray can be different names for the same tray when it carries different products. For example, when a tray is equipped with a motor to be assembled, it can be called the first tray; when all the motors in the tray are replaced with assembled motor assemblies, it can be called the third tray; when the tray carries both the motor and the motor assembly, it can be called the first tray or the third tray, or it can have other names, and this application does not limit this.

[0079] Please combine Figure 5 、 Figure 7 as well as Figure 8 As shown, the camera module assembly equipment also includes:

[0080] The gantry loading and unloading structure 400 is used to perform automatic optical inspection on the motor and lens to be assembled, transfer the motor and lens to the active alignment structure 200 for active alignment, expose and cure the assembled motor assembly after dispensing glue, and transfer the cured motor assembly to the first tray transfer module 610. The light source target plate structure 500 is used to determine the relative position and angle (i.e., the first positional relationship) between the lens to be assembled and the normally open image chip, and perform bad pixel detection on the lens.

[0081] The tray transfer structure 600 includes a first tray transfer module 610 and a second tray transfer module 620. The first tray transfer module 610 is used to transfer a first tray from the first silo loading and unloading module 710 to the gantry loading and unloading structure 400, and to transfer a third tray to the first silo loading and unloading module 710. The first tray is used to place a motor to be assembled. The second tray transfer module 620 is used to transfer a second tray from the second silo loading and unloading module to the gantry loading and unloading structure 400.

[0082] The silo loading and unloading structure 700 includes a first silo loading and unloading module 710 and a second silo loading and unloading module 720. The first silo loading and unloading module 710 is used to transfer the motor to be assembled to the camera module assembly equipment of the present application, and to transfer the assembled motor assembly to the next equipment. The second silo loading and unloading module 720 is used to transfer the lens to be assembled to the camera module assembly equipment of the present application.

[0083] The gantry loading and unloading structure 400 , the light source target plate structure 500 , the tray transfer structure 600 , and the silo loading and unloading structure 700 are all disposed on the frame 100 .

[0084] Please refer to Figure 7 As shown, in some embodiments, the silo loading and unloading structure 700 includes a first silo loading and unloading module 710 and a second silo loading and unloading module 720, wherein the first silo loading and unloading module 710 includes a first silo 711, and the first silo 711 includes at least one first material tray and / or at least one third material tray; the second silo loading and unloading module 720 includes a second silo 721, and the second silo 721 includes at least one second material tray.

[0085] Furthermore, the first silo loading and unloading module 710 also includes an assembly line connection part 712. The first silo 711 and the assembly line connection part 712 are distributed along the third direction. The assembly line connection part 712 is used to connect the first tray transfer module 610 so as to remove the first tray equipped with a motor from the first silo 711 through the first tray transfer module 610, and place the third tray equipped with a motor assembly into the first silo 711.

[0086] Please refer to Figure 8As shown, in some embodiments, the tray transfer structure 600 includes a first tray transfer module 610 and a second tray transfer module 620, and the first tray transfer module 610 includes a tray pallet 611, a pallet bracket 612 and a movable shaft 613, wherein the tray pallet 611 is fixed to the upper end of the pallet bracket 612 along the third direction, and the lower end of the pallet bracket 612 along the third direction is slidingly connected to the movable shaft 613, and the pallet bracket 612 drives the tray pallet 611 to move along the extension direction of the movable shaft 613 to take the first tray out of the first silo 711, or place the third tray into the first silo 711.

[0087] When the support plate bracket 612 is located at the first position of the movable shaft 613, the projection of the tray support plate 611 and the first hopper 711 in the third direction at least partially overlaps, so that the tray support plate 611 can take out the first tray from the first hopper 711 and place the third tray into the first hopper 711;

[0088] When the tray support 612 is located in the second position of the movable axis 613, the material tray tray 611 and the projection of the gantry loading and unloading structure 400 in the third direction at least partially overlap, so that the gantry loading and unloading structure 400 can absorb the motor from the first material tray on the material tray tray 611, or the gantry loading and unloading structure 400 can place the assembled motor assembly into the third material tray on the material tray tray 611.

[0089] Specifically, the first tray transfer module 610 also includes a tray pressure block 614, a clamping slider 615, a spring 616, a stop limit plate 617 and a stop fixed bracket 618, wherein the clamping slider 615 is slidably connected to the tray support plate 611 along the extension direction of the movable shaft 613, the two ends of the spring 616 are respectively connected to the clamping slider 615 and the tray support plate 611, the stop fixed bracket 618 is fixed on the movable shaft 613, and the stop limit plate 617 is fixed on the stop fixed bracket 618.

[0090] Please refer to Figure 9 As shown, when there is no tray, the spring 616 exerts a force on the pressing slider 615 in the left direction as shown in the figure, and the stopper 619 of the pressing slider 615 is blocked by the limiting surface below the tray support plate 611, so that the pressing slider 615 slides to the left together with the tray support plate 611;

[0091] Please refer to Figure 10 As shown, after the tray support plate 611 slides to a specific position, the stopper 619 of the pressing slider 615 is restricted by the stop plate 617, and the tray support plate 611 continues to slide to the left. Therefore, the spring 616 is further compressed, and the tray pressing block 614 moves to the right relative to the tray along with the pressing slider 615, thereby reserving more space on the tray support plate 611 for placing trays;

[0092] After the tray is placed on the tray support plate 611, the tray support plate 611 drives the tray and the limiting surface below the tray support plate 611 to move rightward, and the spring 616 gradually relaxes as the tray support plate 611 moves rightward.

[0093] Please refer to Figure 11 As shown, after the tray support plate 611 slides to a specific position, the right side of the tray contacts the tray pressing block 614, driving the pressing slider 615 to move rightward, thereby pressing the tray. The length of the spring 616 then remains unchanged. The speed at which the tray support plate 611 moves between the two specific positions can be determined by the thickness of the tray. For example, if the tray is thin, the speed needs to be slower. Conversely, if the tray is thick, the speed can be relatively faster to prevent the tray from popping out due to excessive speed before being pressed by the pressing block.

[0094] Furthermore, since the position of the limiting plate limits the maximum length of the tray and the position of the limiting surface limits the minimum length of the tray, the lengths of the two limiting plates can also be adjusted according to the length of the tray.

[0095] In addition, the second tray transfer module 620 is used to take out the second tray containing the lens from the second hopper 721. The structure of the second tray transfer module 620 is the same as that of the first tray transfer module 610, and will not be repeated here in this application.

[0096] Please refer to Figure 5 As shown, in some embodiments, the gantry loading and unloading structure 400 includes a first automatic optical inspection module 410, a second automatic optical inspection module 420, an exposure light module 430, a slide rail module 440 and a nozzle module 450, wherein the first automatic optical inspection module 410 is used to inspect the assembled motor assembly (such as stain detection, etc.) and visually locate the motor to be assembled, the second automatic optical inspection module 420 is used to perform automatic optical inspection (such as stain detection, etc.) on the lens to be assembled, the exposure light module 430 is used to solidify the glue in the motor assembly, the nozzle module 450 is used to suck and transfer the lens, motor or motor assembly, and the slide rail module 440 is used to provide the structure required for the movement of the nozzle module 450.

[0097] Specifically, the nozzle module 450 is slidably connected to the slide rail module 440 and is capable of reciprocating along the extension direction of the slide rail module 440. The exposure light module 430 is slidably connected or fixedly connected to the slide rail module 440, and the horizontal projections of the exposure light module 430 and the nozzle module 450 do not overlap to prevent the nozzle module 450 from colliding with the exposure light module 430 during movement. For example, the position of the exposure light module 430 on the slide rail module 440 along the third direction may be higher or lower than the height of the nozzle module 450.

[0098] More specifically, the nozzle module 450 includes a first nozzle, a second nozzle, and a third nozzle, wherein the second nozzle is used to suck the motor, the first nozzle is used to suck the lens, and the third nozzle is used to suck the motor assembly. Optionally, the nozzle module 450 may also include a fourth nozzle, which is used to suck the lens that fails the automatic optical inspection.

[0099] Combine Figure 3 as well as Figure 5 As shown, when the mover platform 230 is located at a specific position, the motor fixture 221a on the second multi-dimensional correction module 220 and the projection of the exposure light module of the gantry loading and unloading structure 400 in the third direction at least partially overlap, so that the glue can be solidified by the exposure light module. When the second suction nozzle is located at a certain position of the slide rail module 440, the projection of the second suction nozzle and the motor fixture 221a in the third direction overlap, so that the second suction nozzle can place the sucked motor on the motor fixture 221a. When the first suction nozzle is located at a certain position of the slide rail module 440, the projection of the first suction nozzle and the lens transfer module 240 in the third direction overlap, so that the first suction nozzle can place the sucked lens on the lens transfer module 240.

[0100] In this embodiment of the present application, the exposure light module 430 is mounted on the gantry loading and unloading structure 400. While the exposure light module 430 is exposing the glue within the motor assembly, the first suction nozzle of the gantry loading and unloading structure 400 can simultaneously pick up the next lens, perform automatic optical inspection on the next lens, and load the next lens onto the lens transfer module 240. Furthermore, the second suction nozzle can pick up the next motor to be assembled and perform initial posture calibration on the next motor to be assembled. After the exposure of the motor assembly is completed, the lens suction nozzle can release the lens of the motor assembly. The lens suction nozzle then moves to pick up the next lens from the lens transfer module 240. The third suction nozzle picks up the motor assembly from the motor fixture 221a, and the second suction nozzle places the next motor to be assembled onto the motor fixture. The third suction nozzle moves the motor assembly above the first automatic optical inspection module 410 for automatic optical inspection. After the inspection is completed, the motor assembly is placed onto the third material tray. At this time, the motor assembly can be unloaded, the next motor to be assembled can be loaded, and the next lens can be sucked up from the lens transfer module 240 and then initially corrected, thereby improving the assembly production efficiency of the motor assembly.

[0101] Furthermore, when the support bracket 612 in the first tray transfer module 610 is located at the second position of the movable axis 613 and the second suction nozzle is located at the third position on the slide rail module 440, the second suction nozzle and the projection of the tray support plate 611 in the first tray transfer module 610 in the third direction at least partially overlap, so that the second suction nozzle can suck the motor to be assembled from the tray held on the first tray transfer module 610; after the second suction nozzle sucks the motor, it drives the motor to move to the top of the first automatic optical inspection module 410, and performs visual positioning and posture adjustment on the motor so that the lower bottom surface of the motor is roughly flush with the reference bottom surface of the motor fixture 221a in the active alignment structure 200 for placing the motor; after the adjustment is completed, the motor is placed in the motor fixture 221a.

[0102] The tray bracket 612 in the second tray transfer module 620 is located at a certain position of the movable axis 613. When the first suction nozzle is located at the fourth position on the slide rail module 440, the projection of the first suction nozzle and the second tray transfer module 620 on the tray tray 611 in the third direction at least partially overlaps, so that the first suction nozzle can pick up the lens from the tray tray 611; the first suction nozzle can pick up the lens from the second tray held by the second tray transfer module 620, and drive the lens to move above the second automatic optical inspection module 420, and perform automatic optical inspection (such as stain detection) on the lens based on the second automatic optical inspection module 420; after the inspection passes, the first suction nozzle places the lens on the lens transfer module 240 of the active alignment structure 200; when performing automatic optical inspection on the lens, the lens posture can also be preliminarily adjusted so that the lower surface of the lens and the upper surface of the lens transfer module 240 in the active alignment structure 200 are roughly flush.

[0103] Please combine Figure 1 as well as Figure 3 As shown, in some embodiments, the light source target plate structure 500 includes a target plate 510, a lifting module 520, a teleconverter module 530 and a detection light source 540. The teleconverter module 530 and the detection light source 540 are arranged at the fixed part of the movable platform 230, the supporting end of the lifting module 520 is fixed to the frame 100, and the target plate 510 is fixed to the lifting end of the lifting module 520 so as to drive the target plate 510 to move up and down along the third direction through the lifting module 520; the target plate 510 is located above the teleconverter module 530 and the detection light source 540 along the third direction, and the teleconverter module 530 and the detection light source 540 are arranged above the active alignment structure 200 along the third direction. The active alignment structure 200 can move to the lower side of the teleconverter module 530 for active alignment, and the active alignment structure 200 can move to the lower side of the detection light source 540 for stain and bad pixel detection.

[0104] In some embodiments, the camera module assembly equipment includes multiple sets of active alignment structures 200, the glue dispensing structure 300 includes multiple glue dispensing units 320 and multiple glue cleaning units, and the gantry loading and unloading structure 400 includes multiple exposure light modules 430. In other words, the camera module assembly equipment includes multiple production lines for active alignment, glue dispensing, and exposure. It should be understood that since the time required for loading and unloading on the assembly line is less than the time required for alignment, glue dispensing, and exposure, by setting up multiple production lines for active alignment, glue dispensing, and exposure, the loading and unloading structure (i.e., the slide rail module 440 and the nozzle module 450) in the gantry loading and unloading structure 400 can be shared, thereby effectively improving production efficiency.

[0105] Exemplarily, the camera module assembly equipment includes two production lines for active alignment, gluing and exposure. The two production lines are arranged in parallel. The slide rail module 440 divides the two production lines into loading and unloading + exposure area, active alignment area and gluing area in turn. Correspondingly, the gantry loading and unloading structure 400 is located in the loading and unloading + exposure area, the active alignment structure 200 is located in the active alignment area, and the gluing structure 300 is located in the gluing area, so that some steps can be carried out simultaneously to improve assembly efficiency.

[0106] Please refer to Figure 12 As shown, the present application provides a camera module assembly method, which is applied to the aforementioned camera module assembly device. The specific description of the camera module assembly device can be referred to the above and will not be repeated here. The camera module assembly method includes the following steps:

[0107] S200, actively aligning the lens and the normally-open image chip to obtain a first positional relationship between the lens and the normally-open image chip, the first positional relationship including first coordinate information and first angle information of the lens after the active alignment;

[0108] S400, determining a third positional relationship between the lens and the motor based on the first positional relationship and the second positional relationship, wherein the second positional relationship includes relative coordinate information and a relative tilt angle between the photosensitive surface of the normally-open image chip and the reference bottom surface of the motor fixture, and the third positional relationship includes second coordinate information and second angle information of the lens when the lens is assembled into the motor, and the reference bottom surface of the motor fixture is used to place the motor;

[0109] S500: Keeping the position and tilt angle of the reference bottom surface unchanged, adjust the horizontal position of the lens according to the second coordinate information so that the lens and the motor are located in the same vertical direction;

[0110] S700 , adjusting the vertical position and tilt angle of the lens based on the second coordinate information and the second angle information, so as to assemble the lens into the motor.

[0111] Among them, the first position relationship, the second position relationship and the third position relationship all include the relative coordinate relationship of the three-axis direction and the relative tilt angle of the three-axis direction. Specifically, in step S200, the target plate, the lens and the normally open image chip are distributed along the third direction, and the normally open image chip in the power-on state is used as the optical reference. The pattern is projected through the target plate, and the light is imaged to the normally open image chip through the lens. The image data captured by the normally open image chip is used to reversely infer the posture deviation between the lens and the chip. The camera module assembly equipment can absorb the lens through the lens pick-and-place component and move the lens to the top of the normally open image chip. The camera module assembly equipment adjusts the position or angle of the lens through the first multi-dimensional correction module, or the camera module assembly equipment adjusts the position or angle of the normally open image chip through the second multi-dimensional correction module, so that the image captured by the normally open image chip meets the requirements.

[0112] When the image captured on the normally-open image chip meets the requirements, the first multi-dimensional correction module and the second multi-dimensional correction module stop adjusting the position or angle of the lens and / or the normally-open image chip, and obtain the first coordinate information and first angle information of the lens. For example, the first coordinate information of the lens is expressed as (X1, Y1, Z1), and the first angle information can be expressed as (θx1, θy1, θz1).

[0113] The second positional relationship can include a coordinate offset and an angular offset between the reference bottom surface of the motor fixture and the photosensitive surface (i.e., the top surface) of the normally-on chip. The second positional relationship can be expressed as (ΔX, ΔY, ΔZ, Δθx, Δθy, Δθz).

[0114] The second coordinate information can be obtained by adding the first coordinate information and the coordinate offset. For example, the second coordinate information can be obtained by adding the first coordinate information and the coordinate offset, and the second coordinate information can be expressed as (X1+ΔX, Y1+ΔY, Z1+ΔZ). The second angle information can be obtained by adding the first angle information and the angle offset. For example, the second angle information can be obtained by adding the first angle information and the angle offset, and the second angle information can be expressed as (θx1+Δθx, θy1+Δθy, θz1+Δθz).

[0115] After the camera module assembly equipment obtains the second coordinate information and the second angle information, it keeps the adjustment part of the second multi-dimensional correction module stationary, and moves the lens through the first multi-dimensional correction module so that the position and angle of the lens correspond to the second multi-dimensional correction data, thereby successfully assembling the lens into the motor chip assembly.

[0116] Specifically, the camera module assembly equipment first adjusts the horizontal position of the lens according to the second coordinate information, aligning the lens and the motor chip assembly in the same vertical direction. In other words, the camera module assembly equipment uses the first multi-dimensional correction module to move the lens above the motor chip assembly. At this point, the lens's XY coordinates satisfy (X1+ΔX, Y1+ΔY). The camera module can adjust the lens's angle information first, then its vertical position.

[0117] For example, in order to avoid collision between the lens and the motor chip assembly when adjusting the horizontal position of the lens, the camera module assembly equipment can move the lens in the vertical direction before adjusting the horizontal position of the lens, and then adjust the horizontal position of the lens.

[0118] As another example, to prevent the lens and the motor chip assembly from colliding with each other when adjusting the horizontal position of the lens, the position of the motor chip assembly can be lower than the position of the normally-open image chip, that is, the position of the reference bottom surface of the motor fixture is lower than the position of the photosensitive surface of the normally-open image chip (that is, ΔZ < 0). For example, the height difference between the reference surface of the motor fixture and the photosensitive surface of the normally-open image chip is greater than the height of the motor chip assembly, that is, the absolute value of ΔZ is greater than the height of the motor chip assembly. In this way, after active alignment between the lens and the normally-open image chip is completed, there is a height difference between the lens and the motor chip assembly. When the camera module assembly equipment adjusts the horizontal position of the lens on the XY plane, the lens and the motor chip assembly will not collide with each other.

[0119] In this application, the camera module assembly equipment first adjusts the horizontal position of the lens, and then adjusts the vertical position and angle of the lens, which can avoid collision between the lens and the motor chip assembly during assembly. At the same time, the lens is assembled to the motor chip assembly according to the determined coordinate information and angle information, which can allow a smaller space to be reserved in the motor chip assembly to assemble the lens. The lens and the motor chip assembly can be assembled with a smaller gap, which is conducive to the miniaturization of the motor chip assembly and the camera module.

[0120] In the present application, the positional relationship is transmitted through a normally open image chip as a reference, thereby determining the position and angle (i.e., the third positional relationship) of the lens when it is inserted into the motor through a positional relationship transmission chain (first positional relationship - second positional relationship - third positional relationship), so that the posture of the lens is determined before insertion, and there is no need to retain adjustment margin in the motor, which is conducive to miniaturization of the motor.

[0121] Specifically, the first position relationship (lens-normally-open image chip) is dynamically acquired through active alignment optical detection;

[0122] The second position relationship (normally open image chip-motor fixture) is obtained through pre-calibration of the visual laser module, recording the multi-dimensional correction parameter relationship between the surface of the normal open image chip and the motor support surface (motor);

[0123] The third positional relationship (lens-motor) performs coordinate transformation based on the first and second positional relationships, mapping the position and posture of the lens to the motor assembly coordinate system to ensure precise alignment of the lens when inserted into the motor.

[0124] In addition, it should be understood that by using the always-on image chip as an intermediate reference, it is also possible to separate the error sources of lens optical calibration and motor mechanical assembly, avoiding the secondary deviation caused by internal adjustment of the motor in the traditional method, and improving the accuracy of active calibration. Figure 13 As shown, the normally open chip and the motor fixture are fixed on the same multi-dimensional correction platform (such as the second multi-dimensional correction module described above). In some embodiments, before step S400, the following steps are further included:

[0125] S300: Use a visual laser module to calibrate the coordinates and tilt angles of the photosensitive surface and the reference bottom surface to obtain a second positional relationship.

[0126] Specifically, the second positional relationship may include the offset of the multi-dimensional correction data between the resting surface of the motor fixture and the top surface (photosensitive surface) of the normally-open image chip. The second positional relationship can be expressed as (ΔX, ΔY, ΔZ, Δθx, Δθy, Δθz).

[0127] Please refer to Figure 15 As shown, in some embodiments, after step S700, the method further includes:

[0128] S800 , maintaining the second coordinate information and the second angle information between the lens and the motor, and bonding and fixing the lens and the motor to obtain a motor assembly.

[0129] Specifically, the camera module assembly equipment adjusts the position or angle of the lens through the first multidimensional correction module so that the lens and motor satisfy the third position relationship. Then, the first and second multidimensional correction modules stop adjusting the position and angle of the lens and motor to maintain the relative position between the lens and motor. The camera module assembly equipment then moves the lens and motor to the glue dispensing station by moving the sub-platform. The lens and motor are bonded and fixed using the glue dispensing structure to obtain a motor assembly.

[0130] It can be understood that in this application, the lens is first inserted and assembled into the motor, and then the two are fixed by gluing. Compared with the traditional method of gluing first and then adjusting, on the one hand, it can avoid the influence of glue adhesion and stress generated by curing, improve the active alignment accuracy while ensuring that the relative position of the lens and the motor remains unchanged; on the other hand, it can also avoid glue overflow, improve the uniformity of glue fixation, and improve the quality of gluing.

[0131] In addition, since the precise relative position of the lens and the motor (i.e., the third position relationship) is first determined in the present application, and then assembly is performed directly according to the data of the third position relationship, it is possible to suppress the position offset caused by active alignment adjustment in the traditional method and reduce the uncertainty caused by dynamic adjustment.

[0132] Of course, in some other embodiments, the lens and the motor may also be fixed using other commonly used fixing methods, which are not listed one by one in this application.

[0133] Please refer to Figure 15 As shown, in some embodiments, after step S800, the method further includes:

[0134] S910, curing the glue in the motor assembly using an exposure lamp;

[0135] S920: After the exposure is completed, the motor assembly is subjected to automated optical inspection (AOI).

[0136] Specifically, after glue dispensing is complete, the camera module assembly equipment uses the movable platform to move the first and second multi-dimensional correction modules to the loading and unloading station. The exposure light module on the gantry loading and unloading structure cures the glue in the motor assembly. After exposure is complete, the lens nozzle releases the lens, and the third nozzle of the gantry loading and unloading structure removes the motor assembly from the motor fixture. The motor assembly is then moved above the first automated optical inspection module for automated optical inspection.

[0137] The automatic optical inspection in step S920 is used to detect whether there is residual fluorescent glue on the motor assembly, whether there are stains on the surface, etc.

[0138] Please refer to Figure 14 As shown, in some embodiments, before step S200, the method further includes:

[0139] S100a, visually positioning and adjusting the posture of the lens so that the horizontal reference plane of the lens is flush with the target plate or the photosensitive surface, and the horizontal reference plane is perpendicular to the optical axis of the lens. The target plate is used for active alignment between the lens and the normally open image chip.

[0140] In step S100a, the camera module assembly equipment uses the first multi-dimensional correction module and the visual laser module to visually position and adjust the lens's posture. Specifically, the camera module assembly equipment uses the first multi-dimensional correction module to move the lens above the visual laser module, where it performs visual positioning to determine the lens's posture. The first adjustment unit then adjusts the lens's angle so that its horizontal reference plane is approximately flush with the target plate.

[0141] Please refer to Figure 14 As shown, in some embodiments, step S200 includes:

[0142] S210, moving the lens and the normally open image chip to positions corresponding to the target plate;

[0143] S220: Adjust the position or tilt angle of the lens or the normally-open image chip so that the image of the target plate obtained by the normally-open image chip meets the preset requirements.

[0144] Specifically, in step S210, the lens and the normally open image chip are moved to positions corresponding to the target plate and the teleconverter by the first multi-dimensional correction module and the second multi-dimensional correction module. That is, the lens and the normally open image chip are moved to positions corresponding to the target plate, the teleconverter, the lens, and the normally open image chip in the vertical direction.

[0145] In addition, in step S220, the lens position and / or angle is adjusted through the first multi-dimensional correction module, or the position and / or angle of the normally open image chip is adjusted through the second multi-dimensional correction module, so that the image of the target plate obtained by the normally open image chip meets the preset requirements; by selecting and adjusting the first multi-dimensional correction module or the second multi-dimensional correction module to complete active alignment, the best calibration method can be selected according to the product characteristics to match diverse production needs. For example, when the mass of the normally open image chip is large, the lens adjustment method can be adopted, and vice versa, to optimize energy consumption and structural life.

[0146] Specifically, active alignment is completed by adjusting the lens, that is, adjusting the lens position and inclination through the first multi-dimensional correction module, using the normally-open image chip to obtain the target plate image, and when the image obtained by the normally-open image chip meets the requirements, determining the position and inclination of the lens and the normally-open image chip; active alignment is completed by adjusting the normally-open image chip, that is, adjusting the position and inclination of the normally-open image chip through the second multi-dimensional correction module, using the normally-open image chip to obtain the target plate image, and when the image obtained by the chip meets the requirements, determining the position and inclination of the lens and the chip.

[0147] Of course, in some other embodiments, active alignment can also be achieved by adjusting the lens and the normally-on image chip simultaneously, that is, by adjusting the first multi-dimensional correction module and the second multi-dimensional correction module simultaneously. The specific adjustment process will not be repeated here.

[0148] In some embodiments, before step S200, the camera module assembly method further includes:

[0149] The posture of the lens is adjusted through the vision module and the first multi-dimensional correction module so that the horizontal reference plane of the lens is flush with the target plate and the horizontal reference plane is perpendicular to the optical axis of the lens; or the lens is visually positioned and the posture is adjusted through the vision module so that the horizontal reference plane of the lens is flush with the surface of the normally open image chip and the horizontal reference plane is perpendicular to the optical axis of the lens.

[0150] It should be understandable that by adjusting the horizontal reference plane of the lens, the initial posture error of the lens can be eliminated, ensuring that it is parallel to the horizontal plane of the target or the normally open image chip before active alignment, providing a more accurate starting point for subsequent active alignment steps.

[0151] It is worth mentioning that in the actual production process, lens leveling can be performed once after multiple rounds of assembly steps to eliminate the accumulated errors in the production process and ensure assembly accuracy.

[0152] Please refer to Figure 16 As shown, in some embodiments, before step S700, the method further includes:

[0153] S610, moving the lens and the normally-on image chip to positions corresponding to the detection light source, where the detection light source is used to provide multiple illumination environments;

[0154] S620: Perform bad pixel detection on the lens based on images captured by the always-on image chip under multiple illumination environments.

[0155] It should be understandable that dust, scratches, bubbles or coating defects on the lens surface may cause fixed dark spots, blurred areas or abnormal reflections in the picture, that is, bad pixels. By detecting the optical defects of the lens in advance before the lens and the motor are assembled and fixed, the losses caused by disassembly and scrapping due to optical problems after the subsequent camera module is assembled can be avoided, thereby reducing the defective rate.

[0156] Please refer to Figure 17 As shown, in some embodiments, before step S200, the method further includes:

[0157] S100b, performing automatic optical inspection on the lens.

[0158] Specifically, the automated optical inspection in step S100b includes, but is not limited to, detecting stains and scratches on the lens surface. It should be understood that by performing automated optical inspection before active alignment, defective lenses can be eliminated in advance, avoiding waste in subsequent processes. In other words, it ensures that the lenses participating in active alignment are flawless, preventing defective products from entering the active alignment step, and reducing rework rates.

[0159] For example, the automated optical inspection (AOI) requires that the diameter of any stain or scratch on the lens surface be less than 20 microns (μm). In other words, if the diameter of any stain or scratch on the lens surface is greater than or equal to 20 μm, the lens is confirmed to have failed the AOI. The lens can then be picked up by the fourth nozzle and placed in the waste tray. If the stain on the lens surface is less than 20 μm, the lens is confirmed to have passed the AOI and placed on the lens transfer module for subsequent lens assembly.

[0160] In step S100b, the camera module assembly equipment can suck the lens from the first material tray through the first suction nozzle, move the lens to above the second automatic optical inspection module, and use the second automatic optical inspection module to perform automatic optical inspection on the lens.

[0161] It is worth mentioning that the present application does not limit the order of step S100a and step S100b, as long as both are before step S200.

[0162] In addition, in some embodiments, the following steps are included between step S100b and step S200:

[0163] The lens that has passed the automatic optical inspection is placed on the lens transfer module;

[0164] The position of the lens in the lens transfer module is obtained through the visual module;

[0165] The lens is taken in from the lens transfer module through the first multi-dimensional correction module.

[0166] It is not difficult to understand that the position parameters of the lens are obtained through the vision module, so that the suction nozzle can be actively aligned to pick up the lens from the lens transfer module. This reduces the possibility of suction failure, improves automation stability, and at the same time reduces the error introduced by suction deviation, further improving installation accuracy.

[0167] In some embodiments, before step S200, the method further includes the following steps: sucking the motor from the second tray and placing it on the motor fixture; further, the method includes:

[0168] Suction motor from the second tray;

[0169] Adjusting the posture of the motor so that the lower surface of the motor is flush with the sinking surface of the motor fixture of the second multi-dimensional correction module;

[0170] Place the motor into the motor fixture.

[0171] For example, the camera module assembly equipment can suck the motor from the second material tray through the second suction nozzle, move the motor to above the first automatic optical inspection module, and adjust the posture of the motor through the first automatic optical inspection.

[0172] As another example, the gantry loading and unloading module may also include a vision module. After the camera module assembly equipment sucks the motor from the second material tray through the second suction nozzle, it moves the motor to the position corresponding to the vision module and adjusts the motor posture through the vision module.

[0173] In the embodiment of the present application, by adjusting the position of the motor, it is possible to ensure that the lower surface of the motor after insertion matches the sinking surface (i.e., the contact surface) of the motor fixture, thereby improving the consistency of the reference surface of subsequent active alignment and reducing mechanical assembly errors.

[0174] It is worth mentioning that the first automatic optical inspection module can not only be used for visual positioning of the motor to be assembled, but also for automatic optical inspection of the camera module after assembly. It is highly versatile and effectively reduces equipment costs.

[0175] Furthermore, in some embodiments, during the process of curing the glue in the motor assembly by the exposure lamp, the camera module assembly equipment can absorb the next lens from the first tray for automatic optical inspection, that is, step S600 in the previous round of assembly process can be at least partially parallel with step S100b in the next round of assembly process; similarly, the step of "placing the lens after automatic optical inspection on the lens transfer module" in the previous round of assembly process can be at least partially parallel with the step of "absorbing the motor from the second tray and placing it on the motor fixture" in the next round of assembly process.

[0176] It should be understandable that by adopting a multi-step parallel design, exposure and curing can be carried out in parallel with lens loading, and motor loading and lens transfer can be carried out in parallel, which can reduce the idle and waiting time of the equipment, optimize the production rhythm, and improve production efficiency.

[0177] Of course, if the equipment allows, other steps in the assembly process of the same wheel or different wheels can also be carried out in parallel to optimize production efficiency. This application does not give examples one by one here.

[0178] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0179] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A camera module assembly method, characterized in that: Applied to camera module assembly equipment, the camera module assembly method includes the steps of: Actively aligning the lens and the normally-open image chip to obtain a first positional relationship between the lens and the normally-open image chip, the first positional relationship including first coordinate information and first angle information of the lens after active alignment; Determining a third positional relationship between the lens and the motor based on the first positional relationship and the second positional relationship, wherein the second positional relationship includes relative coordinate information and a relative tilt angle between the photosensitive surface of the normally-open image chip and a reference bottom surface of a motor fixture, and the third positional relationship includes second coordinate information and second angle information of the lens when the lens is assembled into the motor, and the reference bottom surface of the motor fixture is used to place the motor; Keeping the position and tilt angle of the reference bottom surface unchanged, adjusting the horizontal position of the lens according to the second coordinate information so that the lens and the motor are located in the same vertical direction; A vertical position and a tilt angle of the lens are adjusted based on the second coordinate information and the second angle information, so as to assemble the lens into the motor.

2. The camera module assembly method according to claim 1, wherein: The normally-open image chip and the motor fixture are fixed on the same multi-dimensional correction platform. Before the step of "determining a third positional relationship between the lens and the motor based on the first positional relationship and the second positional relationship", the camera module assembly method further includes: The coordinates and tilt angles of the photosensitive surface and the reference bottom surface are calibrated using a visual laser module to obtain the second positional relationship.

3. The camera module assembly method according to claim 1, wherein: Before the step of "actively aligning the lens and the normally-on image chip", the method further includes: The lens is visually positioned and its posture adjusted so that the horizontal reference plane of the lens is flush with the target plate or the photosensitive surface. The horizontal reference plane is perpendicular to the optical axis of the lens. The target plate is used for active alignment between the lens and the normally open image chip.

4. The camera module assembly method according to claim 3, wherein: The step of "actively aligning the lens and the normally-on image chip" includes: Moving the lens and the normally open image chip to positions corresponding to the target plate; By adjusting the position or tilt angle of the lens or the normally-open image chip, the image of the target plate acquired by the normally-open image chip can meet the preset requirements.

5. The camera module assembly method according to claim 1, wherein: After the step of “adjusting the vertical position and tilt angle of the lens based on the second coordinate information and the second angle information to assemble the lens into the motor”, the method further includes: The second coordinate information and the second angle information between the lens and the motor are maintained, and the lens and the motor are bonded and fixed to obtain a motor assembly.

6. The camera module assembly method according to claim 5, characterized in that: After the step of "maintaining the second coordinate information and the second angle information between the lens and the motor, and bonding and fixing the lens and the motor to obtain a motor assembly", the method further includes: curing the glue in the motor assembly by an exposure lamp; After the exposure is completed, the motor assembly is subjected to automatic optical inspection.

7. The camera module assembly method according to claim 1, wherein: Before the step of “adjusting the vertical position and tilt angle of the lens based on the second coordinate information and the second angle information to assemble the lens into the motor”, the method further includes: Moving the lens and the normally-on image chip to positions corresponding to a detection light source, wherein the detection light source is used to provide multiple illumination environments; The lens is subjected to bad pixel detection based on images captured by the normally-on image chip under the multiple illumination environments.

8. The camera module assembly method according to claim 1, wherein: Before the step of "actively aligning the lens and the normally-on image chip", the method further includes: Automatic optical inspection is performed on the lens.

9. A camera module assembly device, characterized in that: include: frame; An active alignment structure is provided on the frame, comprising a first multi-dimensional correction module and a second multi-dimensional correction module, wherein a lens pick-up and placement member for picking up and placing a lens is fixed to a first adjustment portion of the first multi-dimensional correction module, and a normally open image chip and a motor fixture for accommodating a motor are fixed to a second adjustment portion of the second multi-dimensional correction module, wherein the first multi-dimensional correction module and the second multi-dimensional correction module are configured to: respectively drive the first adjustment portion and the second adjustment portion to move along multi-dimensional directions to actively calibrate the lens extracted by the lens pick-up and placement member and the normally open image chip, determine the positional relationship between the lens and the motor when the lens is installed in the motor, and install the lens into the motor accommodated in the motor fixture based on the positional relationship; as well as A glue dispensing structure is provided on the frame and is used for fixing the motor and the lens installed in the motor by glue dispensing.

10. The camera module assembly equipment according to claim 9, characterized in that: The active alignment structure also includes a movable sub-platform, which includes a fixed part fixed to the frame and a sliding part slidably connected to the fixed part. The first multi-dimensional correction module and the second multi-dimensional correction module are both arranged on the sliding part.

11. The camera module assembly equipment according to claim 10, characterized in that: The dispensing structure includes a dispensing slide, a dispensing part and a glue cleaning part. The dispensing slide is fixed to the frame, the glue cleaning part is fixed to the dispensing slide, and the dispensing part is slidably connected to the dispensing slide and is located on the upper side of the glue cleaning part, so that the dispensing part can move along the dispensing slide to directly above the glue cleaning part; the movable platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to the corresponding position of the dispensing structure.

12. The camera module assembly equipment according to claim 10, characterized in that: The camera module assembly equipment also includes a light source target plate structure, which includes a target plate, a lifting module, a teleconverter module and a detection light source. The teleconverter module and the detection light source are arranged in the fixed part, the supporting end of the lifting module is fixed to the frame, and the target plate is fixed to the lifting end of the lifting module so that the target plate can be driven to rise and fall along the third direction through the lifting module; the target plate is located on the upper side of the teleconverter module and the detection light source along the third direction, and the teleconverter module and the detection light source are arranged on the upper side of the active alignment structure along the third direction; the movable sub-platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to the positions corresponding to the teleconverter module or the detection light source.

13. The camera module assembly equipment according to claim 10, characterized in that: The camera module assembly equipment further includes a gantry loading and unloading structure, which includes a first automatic optical inspection module, a second automatic optical inspection module, an exposure light module, a slide rail module, and a nozzle module, wherein the first automatic optical inspection module, the second automatic optical inspection module, and the exposure light module are all arranged on the slide rail module, the nozzle module is slidably connected to the slide rail module, and the nozzle module and the other modules of the gantry loading and unloading structure do not overlap in projection along a direction perpendicular to the third direction; The movable platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to positions corresponding to the exposure lamp module or the suction nozzle module along the third direction.

14. The camera module assembly device according to any one of claims 9 to 13, wherein: The lens picking and placing component includes a lens suction nozzle, which is provided with a first opening and a plurality of second openings located around the first opening. The first opening is used to suck the lens, and the plurality of second openings correspond to the dispensing positions of the lens.

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