Camera module assembly method and camera module assembly equipment

Abstract

The invention relates to a camera module assembly method and camera module assembly equipment. The camera module assembly method is applied to the camera module assembly equipment, and comprises the following steps: actively aligning a lens and a normally open image chip to obtain a first position relationship between the lens and the normally open image chip; determining a third position relation between the lens and the motor based on the first position relation and the second position relation; adjusting the vertical position and the inclination angle of the lens based on the third position relation so as to assemble the lens into the motor; the position relation is transmitted by taking the normally open image chip as a reference, so that the position and the angle of the lens assembled into the motor are determined through a transmission chain of the position relation, the pose of the lens is determined before insertion, an adjustment margin does not need to be reserved in the motor, and miniaturization of the motor is facilitated.

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 such as smartphones, tablets, and security monitoring. As consumers' requirements for electronic devices to be thin and portable continue to increase, the miniaturization of camera modules has become an inevitable trend in the development of the industry. To ensure that the camera module can capture clear, high-quality images, active alignment (AA) technology plays a key role. This technology precisely adjusts the three linear degrees of freedom of the lens (X, Y, and Z) and the three rotational degrees of freedom of θx, θy, and θz of the lens (LENS) to achieve concentricity calibration between the lens optical axis and the vertical axis of the image sensor (SENSOR) surface, thereby effectively reducing image distortion and improving imaging quality.

[0003] However, the existing camera module assembly process faces many technical bottlenecks in meeting the demand for miniaturization. On the one hand, the continuous reduction in the size of the camera module makes the layout space of the internal components extremely compact, and the space left for the active adjustment operation of the lens is greatly compressed. Traditional adjustment equipment and methods are difficult to achieve high-precision six-degree-of-freedom adjustment in a small space; on the other hand, the miniaturized camera module requires higher assembly accuracy of each component. A small assembly error may cause concentricity deviation between the optical axis of the lens and the vertical axis of the image sensor, thereby affecting the imaging effect. The existing assembly process is difficult to meet the mass production needs of miniaturized camera modules while ensuring high precision.

[0004] Therefore, how to improve the existing camera module assembly process so that it can meet the needs of active adjustment accuracy while meeting the miniaturization requirements 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 with smaller internal space requirements for the motor in order to address the problem 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, wherein the first positional relationship includes first coordinate information and first angle information of the lens after active alignment;

[0008] Based on the first positional relationship and the second positional relationship, determine a third positional relationship between the lens and the motor, where the second positional relationship includes relative coordinate information and a relative tilt angle between the photosensitive surface of the normally open figure 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;

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

[0010] Based on the second coordinate information and the second angle information, adjust the vertical position and tilt angle of the lens to assemble the lens into the motor.

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

[0012] Use a vision laser module to calibrate the coordinates and tilt angles of the photosensitive surface and the reference bottom surface to obtain the second positional relationship.

[0013] In one embodiment, before the step of "actively align the lens and the normally open figure chip", it further includes:

[0014] Perform vision positioning and attitude adjustment on the lens so that the horizontal reference plane of the lens is flush with the reticle or the photosensitive surface. The horizontal reference plane is perpendicular to the optical axis of the lens, and the reticle is used for active alignment between the lens and the normally open figure chip.

[0015] In one embodiment, the step of "actively align the lens and the normally open figure chip" includes:

[0016] Move the lens and the normally open figure chip to the position corresponding to the reticle;

[0017] By adjusting the position or tilt angle of the lens or the normally open figure chip, make the image of the reticle obtained by the normally open figure chip meet the preset requirements.

[0018] In one embodiment, after the step of "Based on the second coordinate information and the second angle information, adjust the vertical position and tilt angle of the lens to assemble the lens into the motor", it further includes:

[0019] Maintain the second coordinate information and the second angle information between the lens and the motor, and bond and fix the lens and the motor 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] Cure the glue in the motor assembly by an exposure lamp;

[0022] After the exposure is completed, perform automatic optical inspection on the motor assembly.

[0023] In one embodiment, before the step of "adjusting the vertical position and the 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] Move the lens and the normally open pattern chip to a position corresponding to a detection light source, where the detection light source is used to provide multiple illumination environments;

[0025] Perform dead pixel detection on the lens based on the images captured by the normally open pattern chip in the multiple illumination environments.

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

[0027] Perform automatic optical inspection on the lens.

[0028] This application also provides an assembly device for a camera module, including:

[0029] A frame;

[0030] An active alignment structure, disposed on the frame, includes a first multi-dimensional correction module and a second multi-dimensional correction module. A lens pick-and-place member for picking and placing a lens is fixed to a first adjustment portion of the first multi-dimensional correction module. A normally open pattern chip and a motor fixture for accommodating a motor are fixed to a second adjustment portion of the second multi-dimensional correction module. 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 in multi-dimensional directions to perform active calibration on the lens picked by the lens pick-and-place member and the normally open pattern 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 by the motor fixture based on the positional relationship; and

[0031] The dispensing structure is disposed on the frame and is used to fix the motor and the lens installed in the motor by dispensing.

[0032] In one embodiment, the active alignment structure further includes a mover 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 disposed on the sliding part.

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

[0034] In one embodiment, the camera module assembly device further includes the light source reticle structure, which includes a reticle, a lifting module, a teleconverter module, and a detection light source. The teleconverter module and the detection light source are disposed on the fixed part. The support end of the lifting module is fixed to the frame, and the reticle is fixed to the lifting end of the lifting module, so as to drive the reticle to lift along the third direction through the lifting module; the reticle is located above the teleconverter module and the detection light source along the third direction, and the teleconverter module and the detection light source are disposed above the active alignment structure along the third direction; the mover platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to the position corresponding to the teleconverter module or the detection light source.

[0035] In one embodiment, the camera module assembly device further includes a gantry loading and unloading structure, which includes a first automatic optical detection module, a second automatic optical detection module, an exposure lamp module, a slide rail module, and a suction nozzle module. Among them, the first automatic optical detection module, the second automatic optical detection module, and the exposure lamp module are all disposed on the slide rail module. The suction nozzle module is slidably connected to the slide rail module, and the projection of the suction nozzle module and the other modules of the gantry loading and unloading structure along the direction perpendicular to the third direction does not overlap.

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

[0037] In one embodiment, the lens pick-and-place part includes a lens suction nozzle, and the lens suction nozzle is provided with a first opening and a plurality of second openings located on the periphery of 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] In the above camera module assembly method, the position relationship is transmitted by using the normally open figure chip as a reference, so as to determine the position and angle of the lens group when it is inserted into the motor through the position relationship transmission chain, so that the position and pose of the lens are determined before insertion, without the need to reserve adjustment margins in the motor, which can meet the requirements of active adjustment accuracy while meeting the needs of miniaturization of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a perspective view of the camera module assembly device of the present application;

[0040] Figure 2 is Figure 1 a perspective view of the active alignment structure and part of the light source template structure in

[0041] Figure 3 is Figure 2 an enlarged view of part A in

[0042] Figure 4 is Figure 3 an enlarged view of part B in

[0043] Figure 5 is Figure 1 a perspective view of the gantry loading and unloading structure in

[0044] Figure 6 is Figure 1 a perspective view of the dispensing structure in

[0045] Figure 7 is Figure 1 a perspective view of the frame, part of the light source template structure and the magazine loading and unloading structure in

[0046] Figure 8 is Figure 1 a perspective view of the tray transfer structure in

[0047] Figure 9 is Figure 8 a schematic diagram of the first tray transfer module without a tray in

[0048] Figure 10 is Figure 8 a schematic diagram of the first tray transfer module when the stopper 619 is blocked by the stop limit plate 617 in

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

[0050] Figure 12 Flow chart of one embodiment of the camera module assembly method of the present application;

[0051] Figure 13 Partial flow chart of another embodiment of the camera module assembly method of the present application;

[0052] Figure 14 Partial flow chart of another embodiment of the camera module assembly method of the present application;

[0053] Figure 15 Partial flow chart of another embodiment of the camera module assembly method of the present application;

[0054] Figure 16 Partial flow chart of another embodiment of the camera module assembly method of the present application;

[0055] Figure 17 Partial flow chart of another embodiment of the camera module assembly method of the present application.

[0056] Reference numerals: 100, frame; 200, active alignment structure; 210, first multi-dimensional correction module; 211, first adjustment part; 211a, lens pick-and-place part; 212, first support part; 220, second multi-dimensional correction module; 221, second adjustment part; 221a, motor fixture; 221a1, first opening; 221a2, second opening; 221b, chip fixture; 222, second support part; 230, mover platform; 240, lens transfer module; 250, vision 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 reticle structure; 510, reticle; 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 shaft; 614, tray pressing block; 615, pressing slider; 616, spring; 617, stop limit plate; 618, stop fixing bracket; 619, stop block; 620, second tray transfer module; 700, magazine loading and unloading structure; 710, first magazine loading and unloading module; 711, first magazine; 712, pipeline connection part; 720, second magazine loading and unloading module; 721, second magazine. Detailed Description

[0057] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 construed as a limitation to the present invention.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0060] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height 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 can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. 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.

[0063] For ease 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 the three-axis directions. The movement along the three-axis directions and the rotation around the three-axis directions are defined as multi-dimensional movements.

[0064] In addition, "flush" in the embodiments of this application means roughly flush, and process errors are allowed. For example, the angle between two surfaces within ±5° belongs to the range of "flush" in the embodiments of this application. Similarly, "vertical" in the embodiments of this application can be understood as roughly vertical. For example, the vertical in the embodiments of this application can include the range of 85°-95°.

[0065] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown, this application provides a camera module assembly device, including: a frame 100; an active alignment structure 200 disposed on the frame 100, including a first multi-dimensional correction module 210 and a second multi-dimensional correction module 220. A lens pick-up member 211a for picking up and placing a lens is fixed to the first adjustment portion 211 of the first multi-dimensional correction module 210. A normally open figure chip and a motor fixture 221a for accommodating a motor are fixed to the second adjustment portion 221 of the second multi-dimensional correction module 220. The first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 can respectively drive the first adjustment portion 211 and the second adjustment portion 221 to move in multi-dimensional directions to actively calibrate the lens picked up by the lens pick-up member 211a and the normally open figure 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 by the motor fixture 221a based on the positional relationship; and a dispensing structure 300 disposed on the frame 100 and used for dispensing and fixing the motor and the lens installed in the motor.

[0066] Among them, the normally open figure chip is a sensor for continuous image capture, which can maintain the "normally open" state at extremely low power consumption and respond to visual information in real time. Regarding the positional relationship between the lens and the motor, reference can be made to the third positional relationship described below, which will not be elaborated here.

[0067] Further, the active alignment structure 200 further includes a mover platform 230. The mover platform 230 includes a fixed part fixed to the frame 100 and a sliding part slidably connected to the fixed part. The first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are both disposed on the sliding part of the mover platform 230, so as to move the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to the positions corresponding to the light source reticle module for active alignment by moving the sliding part of the mover platform 230, or move the motor fixtures 221a of the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to the positions corresponding to the dispensing structure 300. Among them, moving the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to the positions corresponding to the light source reticle module means that the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are moved below the light source reticle module. Specifically, the lens pick-and-place member 211a and the motor fixture 221a are in the same vertical direction as the reticle and / or the teleconverter of the light source reticle module. Since the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are moved to the positions corresponding to the light source reticle module for active alignment, this position can also be referred to as the active alignment station. Moving the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 to the positions corresponding to the dispensing structure 300 means that the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are moved below the dispensing structure 300. Specifically, the lens pick-and-place member 211a and the motor fixture 221a are in the same vertical direction as the dispensing head of the dispensing structure 300. Since the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are moved to the positions corresponding to the dispensing structure 300 for dispensing, this position can also be referred to as the dispensing station.

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

[0069] It should be understood that since the first multi-dimensional correction module 210 and the second multi-dimensional correction module 220 are both disposed on the sliding part of the mover platform 230, after the active alignment is completed, the two multi-dimensional correction modules can be kept relatively fixed, that is, the adjustment parts of the two multi-dimensional correction modules are no longer adjusted, and the two multi-dimensional correction modules are driven by the sliding part of the mover platform 230 to move to the dispensing station, which can ensure the pose consistency 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 part of the mover 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, so as to meet the requirements of multi-step parallelism, reduce the idle time of the equipment, and improve the production efficiency. Further, the active alignment structure 200 further includes a lens transfer module 240 and a vision laser module 250. The second multi-dimensional correction module 220, the lens transfer module 240, and the vision laser module 250 are all fixed to the sliding part of the mover platform 230. The first multi-dimensional correction module 210 is movably arranged on the sliding part of the mover platform 230. The second multi-dimensional correction module 220, the lens transfer module 240, and the vision laser module 250 are distributed along the first direction, so as to move the lens pick-up part 211a to the position corresponding to the lens transfer module 240, the position corresponding to the vision laser module 250, or the position corresponding to the normally open pattern chip by moving the position of the first multi-dimensional correction module 210. Among them, the lens pick-up part 211a moving to the position corresponding to the lens transfer module 240 means that the lens pick-up part 211a moves directly above the lens transfer module 240, that is, the lens pick-up part 211a and the lens transfer module 240 overlap in the third direction. The lens pick-up part 211a moving to the position corresponding to the vision laser module 250 means that the lens pick-up part 211a moves directly above the vision laser module 250, that is, the lens pick-up part 211a and the vision laser module 250 overlap in the third direction. The lens pick-up part 211a moving to the position corresponding to the normally open pattern chip means that the lens pick-up part 211a moves directly above the normally open pattern chip, that is, the lens pick-up part 211a and the normally open pattern chip overlap in the third direction.

[0071] Please refer to Figure 3 As shown, in some embodiments, the first multi-dimensional correction module 210 includes a first support part 212 and a first adjustment part 211. The lens pick-up part 211a is a lens suction nozzle. The first support part 212 is slidably arranged on the mover platform 230. The first support part 212 can slide relative to the mover platform 230 along the first direction. The first adjustment part 211 can move in multi-dimensional directions relative to the first support part 212. The lens suction nozzle is arranged on the first adjustment part 211 to adjust the multi-dimensional parameters of the lens suction nozzle through the first adjustment part 211, so as to realize the adjustment of the lens position and angle.

[0072] Specifically, please combine Figure 3 and Figure 4As shown, the lens suction nozzle extends in the second direction and overlaps with the second multi-dimensional correction module 220, the lens transfer module 240, or the vision laser module 250 in the third direction (i.e., the vertical direction). The lens suction nozzle is provided with a first opening 221a1, which can also be referred to as the middle opening of the lens suction nozzle. On the one hand, it is used to suck the lens, and on the other hand, it can also prevent the lens from being blocked during active alignment. In addition, the lens suction nozzle is further provided with a plurality of second openings 221a2 around the first opening 221a1, and the plurality of second openings 221a2 correspond to the lens dispensing positions to facilitate the dispensing. For example, the lens suction nozzle is provided with four second openings 221a2 around the first opening 221a1, and these four second openings 221a2 can be evenly distributed along the circumferential side of the first opening 221a1. Among them, 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 in the third direction.

[0073] Of course, in some other embodiments, the lens pick-and-place part 211a can also be other part transfer structures such as a flexible manipulator, as long as it can pick and place the lens as needed and will not cause 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 mover platform 230, the second adjustment portion 221 can move relative to the second support portion 222 in multiple directions, and a chip fixture 221b and a motor fixture 221a distributed in the first direction are fixed on the second adjustment portion 221. Among them, a normally open chip in an energized state is provided on the chip fixture 221b, 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 dispensing structure 300 includes a dispensing slide rail 310, a dispensing portion 320, and a glue cleaning portion. The dispensing slide rail 310 is fixed to the frame 100, the glue cleaning portion is fixed to the dispensing slide rail 310, and the dispensing portion 320 is slidably connected to the dispensing slide rail 310 and is located above the glue cleaning portion, so that the dispensing portion 320 can move along the dispensing slide rail 310 to directly above the glue cleaning portion.

[0076] Specifically, the dispensing structure 300 further includes a dispensing cylinder 330. The dispensing cylinder 330 is slidably connected to the dispensing slide rail 310. The dispensing part 320 is arranged at the moving end of the dispensing cylinder 330 to drive the dispensing part 320 to move in the third direction and perform dispensing when the lens suction nozzle reaches the dispensing position (the dispensing part 320, the motor fixture 221a, and the lens suction nozzle overlap in the third direction), so as to perform dispensing bonding on the motor and the lens to be assembled and obtain a motor assembly.

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

[0078] For the convenience 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, and the first tray, the second tray, and the third tray can be different names of the same tray when carrying different products. For example, when a tray contains 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 motors and motor assemblies at the same time, it can be called the first tray or the third tray, or there can be other names, which are not limited in this application.

[0079] Please refer to Figure 5 、 Figure 7 and Figure 8 As shown, the camera module assembly device further includes:

[0080] A gantry loading and unloading structure 400, which is used for automatically optically detecting the motor and the lens to be assembled, transferring the motor and the lens to be assembled to the active alignment structure 200 for active alignment, exposing and curing the assembled and dispensed motor assembly, and transferring the cured motor assembly to the first tray transfer module 610; a light source template structure 500, which is used for determining the relative position and angle (i.e., the first positional relationship) between the lens to be assembled and the normally open figure chip, and performing 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 the first tray from the first bin loading and unloading module 710 to the gantry loading and unloading structure 400, and transfer the third tray to the first bin loading and unloading module 710. Among them, the first tray is used to place the motor to be assembled; the second tray transfer module 620 is used to transfer the second tray from the second loading bin loading and unloading module to the gantry loading and unloading structure 400;

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

[0083] The gantry loading and unloading structure 400, the light source template structure 500, the tray transfer structure 600, and the bin loading and unloading structure 700 are all arranged on the frame 100.

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

[0085] Further, the first bin loading and unloading module 710 further includes a pipeline connection part 712. The first bin 711 and the pipeline connection part 712 are distributed along the third direction. The pipeline connection part 712 is used to connect the first tray transfer module 610, so as to take out the first tray containing the motor from the first bin 711 through the first tray transfer module 610, and place the third tray containing the motor assembly into the first bin 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. The first tray transfer module 610 includes a tray pallet 611, a pallet support 612, and a moving shaft 613. Among them, the tray pallet 611 is fixed to the upper end of the pallet support 612 in the third direction, and the lower end of the pallet support 612 in the third direction is slidably connected to the moving shaft 613. The pallet support 612 drives the tray pallet 611 to move along the extension direction of the moving shaft 613 to take out the first tray from the first bin 711 or place the third tray into the first bin 711.

[0087] Among them, when the pallet support 612 is located at the first position of the moving shaft 613, the projection of the tray pallet 611 and the first bin 711 in the third direction at least partially overlap, so that the tray pallet 611 can take out the first tray from the first bin 711 and place the third tray into the first bin 711.

[0088] When the pallet support 612 is located at the second position of the moving shaft 613, the projection of the tray pallet 611 and 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 suck the motor from the first tray on the tray pallet 611, or the gantry loading and unloading structure 400 can place the assembled motor assembly into the third tray on the tray pallet 611.

[0089] Specifically, the first tray transfer module 610 further includes a tray pressing block 614, a pressing slider 615, a spring 616, a stop limiting plate 617, and a stop fixing bracket 618. Among them, the pressing slider 615 is slidably connected to the tray pallet 611 along the extension direction of the moving shaft 613. The two ends of the spring 616 are respectively connected to the pressing slider 615 and the tray pallet 611. The stop fixing bracket 618 is fixed on the moving shaft 613, and the stop limiting plate 617 is fixed on the stop fixing bracket 618.

[0090] Please refer to Figure 9 As shown, in the case of no tray, the spring 616 has a leftward acting force on the pressing slider 615, and the stopper 619 of the pressing slider 615 is blocked by the limiting surface below the tray pallet 611, so that the pressing slider 615 and the tray pallet 611 slide leftward together.

[0091] Please refer to Figure 10 As shown, after the tray pallet 611 slides to a specific position, the stopper 619 of the pressing slider 615 is restricted by the stop limiting plate 617, while the tray pallet 611 continues to slide leftward. Therefore, the spring 616 is further compressed, and the tray pressing block 614 moves rightward relative to the tray along with the pressing slider 615, so as to reserve more space on the tray pallet 611 for placing the tray.

[0092] After the waiting material tray is placed on the tray pallet 611, the tray pallet 611 drives the tray and the limiting surface below the tray pallet 611 to move to the right, and the spring 616 gradually relaxes as the tray pallet 611 moves to the right.

[0093] Please refer to Figure 11 As shown, after the tray pallet 611 slides to a specific position, the right side of the tray contacts the tray pressing block 614 and drives the pressing slider 615 to move to the right together, so as to be able to press the tray, and then the length of the spring 616 remains unchanged. Among them, the moving speed of the tray pallet 611 between two specific positions can be determined by the thickness of the tray. For example, when the tray thickness is relatively thin, the speed needs to be slower. On the contrary, if the tray thickness is relatively thick, the moving speed can be relatively fast to prevent the tray from popping out due to too fast 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 tray length.

[0095] In addition, the second tray transfer module 620 is used to take out the second tray containing the lens from the second bin 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 elaborated herein.

[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 lamp module 430, a slide rail module 440, and a nozzle module 450. Among them, the first automatic optical inspection module 410 is used to inspect the assembled motor assembly (such as stain inspection, etc.) and perform visual positioning on the motor to be assembled, the second automatic optical inspection module 420 is used to perform automatic optical inspection on the lens to be assembled (such as stain inspection, etc.), the exposure lamp module 430 is used to cure the glue in the motor assembly, the nozzle module 450 is used to suck and transfer the lens, the motor or the 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 the nozzle module 450 can reciprocate along the extension direction of the slide rail module 440; the exposure lamp module 430 is slidably connected or fixedly connected to the slide rail module 440, and the projections of the exposure lamp module 430 and the nozzle module 450 in the horizontal direction do not overlap to prevent the nozzle module 450 from colliding with the exposure lamp module 430 during movement. For example, the position of the exposure lamp module 430 on the slide rail module 440 is higher or lower than the height of the nozzle module 450 in the third direction.

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

[0099] Combined with Figure 3 and Figure 5 As shown, when the mover platform 230 is located at a specific position, the projection of the motor fixture 221a on the second multi-dimensional correction module 220 and the exposure lamp module of the gantry loading and unloading structure 400 at least partially overlap in the third direction, so that the curing of the glue can be realized through the exposure lamp module. When the second nozzle is located at a certain position of the slide rail module 440, the projections of the second nozzle and the motor fixture 221a overlap in the third direction, so that the second nozzle can place the picked-up motor on the motor fixture 221a. When the first nozzle is located at a certain position of the slide rail module 440, the projections of the first nozzle and the lens transfer module 240 overlap in the third direction, so that the first nozzle can place the picked-up lens on the lens transfer module 240.

[0100] In the embodiment of the present application, the exposure lamp module 430 is arranged on the gantry loading and unloading structure 400. During the process of exposing the glue in the motor assembly by the exposure lamp module 430, the first nozzle of the gantry loading and unloading structure 400 can synchronously pick up the next lens, perform automatic optical inspection on the next lens, load the next lens onto the lens transfer module 240, and the second nozzle picks up the next motor to be assembled and performs attitude initial correction on the next motor to be assembled. After the exposure of the motor assembly is completed, the lens nozzle can release the lens of the motor assembly, then the lens nozzle moves and picks up the next lens from the lens transfer module 240, the third nozzle picks up the motor assembly from the motor fixture 221a, and the second nozzle places the next motor to be assembled on the motor fixture. The third nozzle moves the motor assembly above the first automatic optical inspection module 410 to perform automatic optical inspection on the motor assembly, and places the motor assembly on the third tray after the inspection is completed. At this time, the operations of discharging the motor assembly, loading the next motor to be assembled, and picking up the next lens from the lens transfer module 240 and performing attitude initial correction can be synchronously realized, thereby improving the assembly production efficiency of the motor assembly.

[0101] Further, when the pallet support 612 in the first tray transfer module 610 is at the second position of the moving shaft 613 and the second suction nozzle is at the third position on the slide rail module 440, the projection of the second suction nozzle and the tray pallet 611 in the first tray transfer module 610 in the third direction at least partially overlaps, so that the second suction nozzle can suck the motor to be assembled from the tray held by the first tray transfer module 610; after the second suction nozzle sucks the motor, it drives the motor to move above the first automatic optical inspection module 410 to perform visual positioning and attitude adjustment on the motor, so that the lower bottom surface of the motor is substantially flush with the reference bottom surface for placing the motor in the motor fixture 221a in the active alignment structure 200; after the adjustment is completed, the motor is placed in the motor fixture 221a.

[0102] When the pallet support 612 in the second tray transfer module 620 is at a certain position of the moving shaft 613 and the first suction nozzle is at the fourth position on the slide rail module 440, the projection of the first suction nozzle and the tray pallet 611 in the second tray transfer module 620 in the third direction at least partially overlaps, so that the first suction nozzle can suck the lens from the tray pallet 611; the first suction nozzle can suck 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 to 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 attitude 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 substantially flush.

[0103] Please refer to Figure 1 and Figure 3 As shown, in some embodiments, the light source reticle structure 500 includes a reticle 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 disposed on the fixed portion of the mover platform 230. The support end of the lifting module 520 is fixed to the frame 100, and the reticle 510 is fixed to the lifting end of the lifting module 520 to drive the reticle 510 to move up and down in the third direction through the lifting module 520; the reticle 510 is located above the teleconverter module 530 and the detection light source 540 in the third direction. The teleconverter module 530 and the detection light source 540 are disposed above the active alignment structure 200 in 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 above camera module assembly device includes multiple groups of active alignment structures 200. The dispensing structure 300 includes multiple dispensing parts 320 and multiple glue cleaning parts. The gantry loading and unloading structure 400 includes multiple exposure lamp modules 430. That is to say, the camera module assembly device includes multiple production lines for active alignment, dispensing, and exposure. It should be understood that since the time required for loading and unloading on the production line is less than the time required for alignment, dispensing, and exposure, therefore, by setting multiple production lines for active alignment, dispensing, and exposure, the loading and unloading structures (i.e., the slide rail module 440 and the suction 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 device includes two production lines for active alignment, dispensing, and exposure. These two production lines are arranged in parallel. The slide rail module 440 divides the two production lines into a loading and unloading + exposure area, an active alignment area, and a dispensing area in sequence. 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 dispensing structure 300 is located in the dispensing area, so that some steps can be carried out synchronously to improve the assembly efficiency.

[0106] Please refer to Figure 12 As shown, the present application provides a camera module assembly method. This method is applied to the aforementioned camera module assembly device. For the specific description of the camera module assembly device, reference can be made to the foregoing, and details will not be repeated here. The camera module assembly method includes the steps:

[0107] S200. Actively align the lens and the normally open image sensor chip to obtain the first positional relationship between the lens and the normally open image sensor chip. The first positional relationship includes the first coordinate information and the first angle information of the lens after active alignment.

[0108] S400. Based on the first positional relationship and the second positional relationship, determine the third positional relationship between the lens and the motor. Among them, the second positional relationship includes the relative coordinate information and the relative tilt angle between the photosensitive surface of the normally open image sensor chip and the reference bottom surface of the motor fixture. The third positional relationship includes the second coordinate information and the second angle information of the lens when the lens is assembled into the motor. The reference bottom surface of the motor fixture is used to place the motor.

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

[0110] S700. Adjust 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.

[0111] Among them, the first positional relationship, the second positional relationship, and the third positional relationship all include the relative coordinate relationship in the three-axis directions and the relative tilt angles in the three-axis directions. Specifically, in step S200, the reticle, the lens, and the normally open pattern chip are distributed along the third direction. The normally open pattern chip in the energized state is used as the optical reference. A pattern is projected through the reticle, and the light passes through the lens and is imaged onto the normally open pattern chip. The image data captured by the normally open pattern chip is used to deduce the pose deviation between the lens and the chip. The camera module assembly device can suck the lens through the lens pick-and-place part and move the lens above the normally open pattern chip. The camera module assembly device adjusts the position or angle of the lens through the first multi-dimensional correction module, or the camera module assembly device adjusts the position or angle of the normally open pattern chip through the second multi-dimensional correction module so that the image captured by the normally open pattern chip meets the requirements.

[0112] When the image captured on the normally open pattern 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 pattern chip, and obtain the first coordinate information and the 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 may include the coordinate offset and the angle offset between the reference bottom surface of the motor fixture and the photosensitive surface (i.e., the upper surface) of the normally open pattern chip. The second positional relationship can be expressed as (ΔX, ΔY, ΔZ, Δθx, Δθy, Δθz).

[0114] The above-mentioned second coordinate information can be obtained from the first coordinate information and the coordinate offset. For example, the second coordinate information is 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 from the first angle information and the angle offset. For example, the second angle information is 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 device obtains the second coordinate information and the second angle information, it keeps the adjusting 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 device first adjusts the horizontal position of the lens according to the second coordinate information, so that the lens and the motor chip assembly are in the same vertical direction, that is, the camera module assembly device moves the lens above the motor chip assembly through the first multi-dimensional correction module. At this time, the coordinates of the lens on the XY axis satisfy (X1 + ΔX, Y1 + ΔY). The camera module can first adjust the angle information of the lens and then adjust the vertical position of the lens.

[0117] Exemplarily, 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 device 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] Another example, in order to avoid collision between the lens and the motor chip assembly 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 figure chip, that is, the position of the reference bottom surface of the motor fixture is lower than the photosensitive surface of the normally open figure chip (i.e., ΔZ < 0). For example, the height difference between the reference surface of the motor fixture and the photosensitive surface of the normally open figure 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 the active alignment between the lens and the normally open figure chip is completed, there is a height difference between the lens and the motor chip assembly. When the camera module assembly device 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 device 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 with determined coordinate information and angle information, which can allow a smaller space to be reserved in the motor chip assembly for assembling the lens, and the lens and the motor chip assembly can be assembled with a smaller gap, which is beneficial to the miniaturization of the motor chip assembly and the camera module.

[0120] In this application, the position relationship is transmitted through the normally open figure chip as a reference, so as to determine the position and angle (i.e., the third position relationship) of the lens when it is assembled into the motor through the position relationship transmission chain (the first position relationship - the second position relationship - the third position relationship), so that the pose of the lens is determined before insertion, and there is no need to reserve adjustment margin in the motor, which is beneficial to the miniaturization of the motor.

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

[0122] The second position relationship (normally open figure chip - motor fixture) is obtained through pre-calibration by the vision laser module, and the multi-dimensional correction parameter relationship between the surface of the normally open figure chip and the motor sinking surface (motor) is recorded;

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

[0124] In addition, it should be understood that by using the normally - open pattern chip as an intermediate reference, it is also possible to separate the error sources of lens optical calibration and motor mechanical assembly, avoid the secondary deviation caused by internal adjustment of the motor in the traditional method, and improve the accuracy of active calibration. Please refer to Figure 13 As shown, the normally - open pattern 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, it further includes:

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

[0126] Specifically, the second positional relationship may include the offset of the sinking surface of the motor fixture relative to the upper surface (photosensitive surface) of the normally - open pattern 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, it further includes:

[0128] S800. Keep the second coordinate information and the second angle information between the lens and the motor, bond and fix the lens and the motor to obtain the motor assembly.

[0129] Specifically, the camera module assembly device adjusts the position or angle of the lens through the first multi - dimensional correction module so that the third positional relationship is satisfied between the lens and the motor. Then, the first multi - dimensional correction module and the second multi - dimensional correction module stop adjusting the position and angle of the lens and the motor so that the relative position between the lens and the motor remains unchanged. The camera module assembly device then moves the lens and the motor to the dispensing station through the moving sub - platform. The lens and the motor are bonded and fixed through the dispensing structure to obtain the motor assembly.

[0130] It can be understood that in the present application, the lens is first inserted and assembled into the motor, and then the two are fixed by dispensing. Compared with the traditional method of dispensing first and then adjusting, on the one hand, it can avoid the influence of the adhesive force of the glue and the stress generated by curing, improve the active alignment accuracy while ensuring the relative position between 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 dispensing quality.

[0131] In addition, since the exact relative position between the lens and the motor (i.e., the third positional relationship) is determined first in this application, and then the assembly is directly carried out according to the data of the third positional relationship, it is possible to suppress the position deviation caused by the active alignment adjustment in the traditional method and reduce the uncertainty brought by the dynamic adjustment.

[0132] Of course, in some other embodiments, other common fixing methods can also be used to fix the lens and the motor, and this application will not list them one by one here.

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

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

[0135] S920, after the exposure is completed, performing an Automated Optical Inspection (AOI) on the motor assembly.

[0136] Specifically, after the dispensing is completed, the camera module assembly device moves the first multi-dimensional correction module and the second multi-dimensional correction module to the loading and unloading station through the mover platform, and uses the exposure lamp module on the gantry loading and unloading structure to cure the glue in the motor assembly. After the exposure is completed, the lens nozzle releases the lens, and the third nozzle of the gantry loading and unloading structure sucks the motor assembly from the motor fixture and moves the motor assembly above the first automated optical inspection module to perform an automated optical inspection on the motor assembly.

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

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

[0139] S100a, performing visual positioning and attitude adjustment on the lens so that the horizontal reference plane of the lens is flush with the reticle or the photosensitive surface, the horizontal reference plane is perpendicular to the optical axis of the lens, and the reticle is used for active alignment between the lens and the normally open image chip.

[0140] In step S100a, the camera module assembly device performs visual positioning and attitude adjustment on the lens through the first multi-dimensional correction module and the visual laser module. Specifically, the camera module assembly device can move the lens above the visual laser module through the first multi-dimensional correction module, and perform visual positioning through the visual laser module to determine the attitude of the lens. Then, the first adjustment part is used to adjust the angle of the lens so that the horizontal reference plane of the lens is roughly flush with the reticle.

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

[0142] S210. Move the lens and the normally open pattern chip to the corresponding position of the reticle;

[0143] S220. By adjusting the position or tilt angle of the lens or the normally open pattern chip, so that the image of the reticle obtained by the normally open pattern chip meets the preset requirements.

[0144] Specifically, in step S210, the lens and the normally open pattern chip are moved to the corresponding positions of the reticle and the teleconverter through the first multi-dimensional correction module and the second multi-dimensional correction module. That is to say, the lens and the normally open pattern chip are moved to the corresponding positions in the vertical direction of the four components: the reticle, the teleconverter, the lens, and the normally open pattern chip.

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

[0146] Specifically, the active alignment is completed by adjusting the lens, that is, the position and inclination angle of the lens are adjusted through the first multi-dimensional correction module, and the image of the reticle is obtained by using the normally open pattern chip. When the image obtained by the normally open pattern chip meets the requirements, the position and inclination angle of the lens and the normally open pattern chip are determined; the active alignment is completed by adjusting the normally open pattern chip, that is, the position and inclination angle of the normally open pattern chip are adjusted through the second multi-dimensional correction module, and the image of the reticle is obtained by using the normally open pattern chip. When the image obtained by the chip meets the requirements, the position and inclination angle of the lens and the chip are determined.

[0147] Of course, in some other embodiments, the active alignment can also be completed by adjusting the lens and the normally open pattern 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 elaborated here.

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

[0149] Adjust the pose of the lens 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 board, and the horizontal reference plane is perpendicular to the optical axis of the lens; or perform vision positioning and pose adjustment on the lens through the vision module so that the horizontal reference plane of the lens is flush with the surface of the normally open pattern chip, and the horizontal reference plane is perpendicular to the optical axis of the lens.

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

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

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

[0153] S610. Move the lens and the normally open pattern chip to the position corresponding to the detection light source, and the detection light source is used to provide multiple illumination environments;

[0154] S620. Perform bad pixel detection on the lens based on the images captured by the normally open pattern chip in multiple illumination environments.

[0155] It should be understood that dust, scratches, bubbles or coating defects on the surface of the lens may cause fixed dark spots, blurred areas or abnormal reflections in the picture, that is, bad pixels are generated. By performing step S420 to detect the optical defects of the lens in advance before the lens and the motor are assembled and fixed, the losses caused by disassembling and scrapping due to optical problems after the subsequent camera module is assembled can be avoided, and the defective rate can be reduced.

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

[0157] S100b. Perform automatic optical inspection on the lens.

[0158] Specifically, the automatic optical inspection in step S100b includes but is not limited to detecting stains and scratches on the surface of the lens. It should be understood that by performing automatic optical inspection before active alignment, defective lenses can be eliminated in advance, avoiding waste in subsequent processes. That is to say, it can ensure that the lenses participating in active alignment are flawless, prevent defective products from flowing into the active alignment step, and reduce the rework rate.

[0159] Exemplarily, automatic optical inspection requires that the diameter of stains on the lens surface be less than 20 micrometers (μm). That is, if the diameter of stains or scratches on the lens surface is greater than or equal to 20 μm, it is confirmed that the automatic optical inspection of the lens fails. The lens can be picked up by the fourth suction nozzle and placed on the waste tray. If the stain on the lens surface is less than 20 μm, it is confirmed that the automatic optical inspection of the lens passes, and the lens is placed on the lens transfer module for the subsequent lens assembly process.

[0160] In step S100b, the camera module assembly device can pick up the lens from the first tray by the first suction nozzle, move the lens 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 sequence relationship between step S100a and step S100b is not limited in this application, as long as both are before step S200.

[0162] In addition, in some embodiments, between step S100b and step S200, there is also a step:

[0163] The lens after automatic optical inspection is placed on the lens transfer module;

[0164] The position of the lens on the lens transfer module is obtained through the vision module;

[0165] The lens is picked up from the lens transfer module by 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 as to facilitate the subsequent active alignment suction nozzle to pick up the lens from the lens transfer module, reduce the possibility of picking up failure, improve the automation stability, and at the same time reduce the error amount introduced by the picking up deviation, further improving the installation accuracy.

[0167] In some embodiments, before step S200, there is also a step: pick up the motor from the second tray and place it on the motor fixture. Further, this step includes:

[0168] Pick up the motor from the second tray;

[0169] Adjust 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] Exemplarily, the camera module assembly device can pick up the motor from the second tray by the second suction nozzle, move the motor above the first automatic optical inspection module, and adjust the posture of the motor through the first automatic optical inspection.

[0172] Exemplarily, the gantry loading and unloading module may further include a vision module. After the camera module assembly device sucks the motor from the second tray with the second suction nozzle, it moves the motor to the position corresponding to the vision module, and adjusts the posture of the motor through the vision module.

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

[0174] It is worth mentioning that the first automatic optical detection module can not only be used for visual positioning of the motor to be assembled, but also for automatic optical detection of the assembled camera module, with high versatility and effectively reducing 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 device can suck the next lens from the first tray for automatic optical detection. That is to say, step S600 in the previous round of assembly process can be at least partially parallel to step S100b in the subsequent round of assembly process; similarly, the step of "placing the lens after automatic optical detection on the lens transfer module" in the previous round of assembly process can be at least partially parallel to the step of "sucking the motor from the second tray and placing it on the motor fixture" in the subsequent round of assembly process.

[0176] It should be understood that by adopting a multi-step parallel design, parallelizing the exposure curing with lens feeding, and parallelizing the motor feeding and lens transfer, it is possible to reduce the idle and waiting time of the equipment, optimize the production rhythm, and improve production efficiency.

[0177] Of course, on the premise that the equipment permits, other steps in the same round or different rounds of assembly processes can also be parallelized to optimize production efficiency, and the present application does not list them one by one here.

[0178] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0179] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A method for assembling a camera module, characterized in that, Applied to a camera module assembly device, the camera module assembly method includes the steps of: Performing active alignment on the lens and the normally open pattern chip to obtain a first positional relationship between the lens and the normally open pattern chip, where the first positional relationship includes first coordinate information and first angle information of the lens after active alignment. Based on the first positional relationship and a second positional relationship, determining a third positional relationship between the lens and the motor. Among them, the second positional relationship includes relative coordinate information and relative tilt angle between the photosensitive surface of the normally open pattern 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. 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 in the same vertical direction. Based on the second coordinate information and the second angle information, adjusting the vertical position and tilt angle of the lens to assemble the lens into the motor.

2. The method for assembling a camera module according to claim 1, wherein The normally open pattern chip and the motor fixture are fixed on the same multi-dimensional correction platform. Before the step of "determining the 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: Using a vision laser module to calibrate the coordinates and tilt angles of the photosensitive surface and the reference bottom surface to obtain the second positional relationship.

3. The method for assembling a camera module according to claim 1, wherein Before the step of "performing active alignment on the lens and the normally open pattern chip", it further includes: Performing vision positioning and attitude adjustment on the lens to make the horizontal reference plane of the lens flush with the reticle or the photosensitive surface. The horizontal reference plane is perpendicular to the optical axis of the lens, and the reticle is used for active alignment between the lens and the normally open pattern chip.

4. The method for assembling a camera module according to claim 3, wherein The step of "performing active alignment on the lens and the normally open pattern chip" includes: Moving the lens and the normally open pattern chip to the position corresponding to the reticle. By adjusting the position or tilt angle of the lens or the normally open pattern chip, making the image of the reticle obtained by the normally open pattern chip meet the preset requirements.

5. The method for assembling a camera module 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", it further includes: Keeping the second coordinate information and the second angle information between the lens and the motor, bonding and fixing the lens and the motor to obtain a motor assembly.

6. The method for assembling a camera module according to claim 5, wherein, After the step of "keeping the second coordinate information and the second angle information between the lens and the motor, bonding and fixing the lens and the motor to obtain a motor assembly", it further includes: Curing the glue in the motor assembly through an exposure lamp. After the exposure is completed, performing automatic optical inspection on the motor assembly.

7. The method for assembling a camera module according to claim 1, wherein Before the step of "adjusting the vertical position and tilting angle of the lens based on the second coordinate information and the second angle information to assemble the lens into the motor", the following steps are further included: Moving the lens and the normally open pattern chip to a position corresponding to a detection light source, where the detection light source is used to provide multiple illumination environments; Performing defective pixel detection on the lens based on the images captured by the normally open pattern chip in the multiple illumination environments.

8. The method for assembling a camera module according to claim 1, wherein Before the step of "actively aligning the lens and the normally open pattern chip", the following steps are further included: Performing automatic optical detection on the lens.

9. An imaging module assembly device, characterized in that, It includes: A frame; An active alignment structure disposed on the frame, including a first multi-dimensional correction module and a second multi-dimensional correction module. A lens pick-and-place member for picking and placing the lens is fixed to a first adjustment portion of the first multi-dimensional correction module, and a normally open pattern chip and a motor fixture for accommodating the motor are fixed to a second adjustment portion of the second multi-dimensional correction module. 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 in multi-dimensional directions to perform active calibration on the lens picked by the lens pick-and-place member and the normally open pattern 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 by the motor fixture based on the positional relationship; And A dispensing structure disposed on the frame and used for dispensing and fixing the motor and the lens installed in the motor.

10. The camera module assembly device according to claim 9, characterized in that, The active alignment structure further includes a mover platform, which includes a fixed portion fixed to the frame and a sliding portion slidably connected to the fixed portion. The first multi-dimensional correction module and the second multi-dimensional correction module are both disposed on the sliding portion.

11. The camera module assembling device according to claim 10, wherein The dispensing structure includes a dispensing slide rail, a dispensing portion, and a glue cleaning portion. The dispensing slide rail is fixed to the frame, the glue cleaning portion is fixed to the dispensing slide rail, and the dispensing portion is slidably connected to the dispensing slide rail and located above the glue cleaning portion, so that the dispensing portion can move along the dispensing slide rail to directly above the glue cleaning portion; the mover platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to a position corresponding to the dispensing structure.

12. The camera module assembly device according to claim 10, wherein, The camera module assembly device further includes a light source template structure, which includes a template, a lifting module, a teleconverter module, and a detection light source. The teleconverter module and the detection light source are disposed on the fixed portion. A support end of the lifting module is fixed to the frame, and the template is fixed to a lifting end of the lifting module to drive the template to lift along a third direction through the lifting module; the template is located above the teleconverter module and the detection light source along the third direction, and the teleconverter module and the detection light source are disposed above the active alignment structure along the third direction; the mover platform is used to drive the first multi-dimensional correction module and the second multi-dimensional correction module to move to a position corresponding to the teleconverter module or the detection light source.

13. The camera module assembly device according to claim 10, wherein The camera module assembly device further includes a gantry loading and unloading structure, which includes a first automatic optical inspection module, a second automatic optical inspection module, an exposure lamp module, a slide rail module, and a nozzle module. Among them, the first automatic optical inspection module, the second automatic optical inspection module, and the exposure lamp module are all arranged on the slide rail module. The nozzle module is slidably connected to the slide rail module, and the projection of the nozzle module and other modules of the gantry loading and unloading structure along a direction perpendicular to the third direction does not overlap. The mover 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 nozzle module along the third direction.

14. The camera module assembly device according to any one of claims 9 to 13, characterized in that, The lens picking and placing member includes a lens nozzle, and the lens nozzle is provided with a first opening and a plurality of second openings located on the periphery of 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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