Lens laminating device and laminating method

Abstract

The invention discloses a lens fitting device and method, and the device comprises a measurement assembly which is used for obtaining the position data of the fitting surface of an upper lens and a lower lens through a plurality of measurement points; the leveling assembly is used for adjusting the postures of the upper lens and the lower lens; the control assembly is connected with the measuring assembly and the leveling assembly and can control the leveling assembly to act based on the position data so that the attaching surfaces of the upper lens and the lower lens can reach the preset parallelism. Multi-point position data acquisition is carried out on the binding face of the upper lens and the lower lens through the measuring assembly, so that the control assembly can obtain complete surface form information, the parallel state of the current binding face is accurately judged, and the adjustment amount is calculated. And the leveling assembly completes corresponding attitude correction according to the instructions. Through the cyclic process of measurement, calculation and execution, it can be ensured that the fitting surfaces of the upper lens and the lower lens reach the required parallelism, and the problem of insufficient fitting precision caused by incomplete measurement data is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lens bonding, and in particular to a lens bonding device and a bonding method. BACKGROUND

[0002] With the development of virtual reality and augmented reality devices towards light and thin, high performance, the core optical elements such as the bonding precision of the upper and lower lenses are increasingly demanding. In the prior art, high-precision bonding mainly relies on accurate alignment of the upper and lower lens bonding surfaces.

[0003] However, the conventional bonding device usually adopts a positioning and measuring method of a single point or a small number of reference points. This method can only obtain the position information of the local area of the lens surface, and cannot comprehensively and accurately reflect the overall topography and attitude of the entire bonding surface. Due to the inevitable inherent defects such as micron-level warping and uneven thickness of the lens in the manufacturing process, the bonding adjustment based on incomplete and non-representative measurement data cannot ensure that the entire bonding surface of the upper and lower lenses reaches a high degree of parallel state, ultimately leading to substandard optical performance of the bonded assembly, affecting the imaging quality and limiting the improvement of production yield. SUMMARY

[0004] Embodiments of the present application provide a lens bonding device and a bonding method to solve the technical problem that the parallelism of the upper and lower lens bonding surfaces is poor due to the inability to comprehensively obtain the lens bonding surface topography information by using a single point or a small number of point measurement method in the prior art.

[0005] To solve the above problems, according to one aspect of the present application, an embodiment of the present application provides a lens bonding device for bonding an upper lens and a lower lens, the lens bonding device comprising: a measurement assembly for obtaining position data of the bonding surfaces of the upper lens and the lower lens through a plurality of measurement points; a leveling assembly for adjusting the attitude of the upper lens and the lower lens; a control assembly in communication connection with the measurement assembly and the leveling assembly, and configured to control the leveling assembly to act based on the position data, so that the bonding surfaces of the upper lens and the lower lens reach a predetermined parallelism.

[0006] In some embodiments, the measurement assembly comprises a first measurement unit and a second measurement unit, the first measurement unit is used to measure the upper surface of the lower lens, and the second measurement unit is used to measure the lower surface of the upper lens when the upper lens and the lower lens are misaligned.

[0007] In some embodiments, the first measurement unit comprises a plurality of first distance sensors, and the second measurement unit comprises a plurality of second distance sensors, the plurality of first distance sensors and the plurality of second distance sensors are arranged in a ring array around the optical axis of the lens fitting device; wherein the first distance sensors and the second distance sensors are laser distance sensors.

[0008] In some embodiments, the measurement assembly further comprises a first rotating unit and a second rotating unit, the first rotating unit is connected with the first measurement unit and drives the rotation thereof, and the second rotating unit is connected with the second measurement unit and drives the rotation thereof, so that the first measurement unit and the second measurement unit rotate around the optical axis to sample the surfaces of the upper lens and the lower lens at different angles.

[0009] In some embodiments, the leveling assembly comprises an upper six-axis unit, a lower six-axis unit, an upper jig, and a lower jig, the upper jig is mounted on the upper six-axis unit and is used for fixing the upper lens, the lower jig is mounted on the lower six-axis unit and is used for fixing the lower lens, and the upper six-axis unit and the lower six-axis unit are configured to drive the upper jig and the lower jig to move in multiple degrees of freedom, respectively.

[0010] In some embodiments, the surface of at least one of the upper jig and the lower jig is provided with a vacuum adsorption structure and a flexible buffer structure; wherein the material of the flexible buffer structure is polyurethane.

[0011] In some embodiments, the movement resolution of the upper six-axis unit and / or the lower six-axis unit is not greater than 0.1 μm, and the repeat positioning accuracy is not greater than 0.3 μm.

[0012] In some embodiments, the lens fitting device further comprises a monitoring assembly, the monitoring assembly comprises a vision sensor for monitoring the deformation of the lens and a pressure sensor for monitoring the fitting pressure, the control assembly is in communication connection with the monitoring assembly, and compensates and adjusts the leveling assembly according to the feedback signal of the monitoring assembly, and triggers the adjustment when the pressure exceeds the pressure preset value or the deformation exceeds the deformation preset value.

[0013] According to another aspect of the present application, embodiments of the present application provide a lens fitting method using the lens fitting device described above, comprising the following steps: Measuring: moving the upper lens and / or the lower lens to be out of the lamination station at the same time, acquiring multiple position data of the lamination surface of the upper lens and the lamination surface of the lower lens by the measuring assembly respectively; leveling calculation: calculating the adjustment amount required for the upper lens and the lower lens to reach the predetermined parallelism based on multiple position data; leveling execution: driving the leveling assembly according to the adjustment amount to adjust the posture of the upper lens and / or the lower lens; and pressing lamination: controlling the upper lens and the lower lens to perform pressing lamination.

[0014] In some embodiments, the measuring assembly comprises a first measuring unit and a second measuring unit; and the measuring step comprises: measuring multiple position data of the upper surface of the lower lens by the first measuring unit, and measuring multiple position data of the lower surface of the upper lens by the second measuring unit.

[0015] In some embodiments, the first measuring unit is driven to rotate by a first rotating unit of the measuring assembly; and / or the second measuring unit is driven to rotate by a second rotating unit of the measuring assembly, multiple rounds of sampling are performed from different angles; and in the leveling calculation step, abnormal measurement points are identified and excluded by comparing data sampled from different angles, and the adjustment amount is calculated based on the filtered effective measurement point set.

[0016] In some embodiments, the measuring step comprises: performing multi-layer interface measurement on the upper lens and the lower lens respectively to acquire position data of at least two different optical interfaces of each lens; and using higher sampling density in the center region of the upper lens and the lower lens than in the edge region for measurement.

[0017] In some embodiments, the leveling calculation step comprises: calculating the measured deviation ΔZ_i between two target optical interfaces based on the pre-stored theoretical lamination gap ΔZ_ideal and the position data measured from one target optical interface selected from the upper lens and the lower lens respectively.

[0018] In some embodiments, the leveling instruction is generated based on the measured deviation ΔZ_i, and the leveling instruction is used to drive the leveling assembly to move in multiple degrees of freedom to compensate for the measured deviation.

[0019] In some embodiments, the pressing speed in the pressing lamination step is 0.05-0.1 mm / s.

[0020] Compared with the prior art, the lens lamination device of the present application has at least the following beneficial effects: The lens fitting device provided by the application is used for fitting of the upper lens and the lower lens, and comprises: a measuring assembly for acquiring position data of the fitting surfaces of the upper lens and the lower lens through a plurality of measuring points; a leveling assembly for adjusting the posture of the upper lens and the lower lens; and a control assembly in communication connection with the measuring assembly and the leveling assembly and configured to control the leveling assembly to act based on the position data so that the fitting surfaces of the upper lens and the lower lens reach a predetermined parallelism.

[0021] The measuring assembly collects position data of the fitting surfaces of the upper lens and the lower lens through a plurality of measuring points, so that the control assembly can acquire complete surface shape information. Based on the comprehensive data, the control assembly can accurately judge the parallel state of the current fitting surface and calculate an accurate adjustment amount. The leveling assembly then completes corresponding posture correction according to the instructions. Through the cyclic process of measurement, calculation and execution, the system can ensure that the fitting surfaces of the upper lens and the lower lens reach the required parallelism, thereby solving the problem of insufficient fitting accuracy caused by incomplete measurement data.

[0022] The lens fitting method provided by the application is designed based on the above lens fitting device, and the beneficial effects thereof are described above and will not be repeated here.

[0023] The above description is only a summary of the technical solutions of the application. In order to more clearly understand the technical means of the application and to implement the content of the description, the preferred embodiments of the application will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0025] Figure 1 A principle block diagram of a lens fitting device provided by an embodiment of the application; Figure 2 A structure schematic diagram of a leveling assembly in a lens fitting device provided by an embodiment of the application; Figure 3 A cooperation diagram of an upper alignment camera and a lower alignment camera in a lens fitting device provided by an embodiment of the application; Figure 4 A structure schematic diagram of a measuring assembly in a lens fitting device provided by an embodiment of the application; Figure 5A structure schematic diagram of an upper lens in a lens fitting device provided by an embodiment of the present application is provided. Figure 6 A structure schematic diagram of a lower lens in a lens fitting device provided by an embodiment of the present application is provided. Figure 7 A point cloud diagram when a measuring assembly scans in a lens fitting device provided by an embodiment of the present application is provided. Figure 8 A flowchart of a lens fitting method provided by an embodiment of the present application is provided. Icon mark description: 1, upper lens; 2, lower lens; 3, measuring assembly; 31, first measuring unit; 32, second measuring unit; 4, leveling assembly; 41, upper six-axis unit; 42, lower six-axis unit; 43, upper jig; 44, lower jig; 5, control assembly; 6, monitoring assembly; 7, upper alignment camera; 8, lower alignment camera. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects according to the present application are described in detail below in combination with the drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0027] In the description of the present application, it should be clear that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; the terms "vertical", "horizontal", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal" and the like 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 application, and do not mean that the device or element referred to must have a particular orientation or position, so it cannot be understood as a limitation on the present application.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] For better understanding of the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings and specific embodiments of the specification.

[0030] Embodiment 1 The present embodiment provides a lens fitting device, as shown in Figures 1-7 for fitting the upper lens 1 and the lower lens 2, the lens fitting device comprises: a measuring assembly 3 for acquiring position data of the fitting surfaces of the upper lens 1 and the lower lens 2 through a plurality of measuring points; a leveling assembly 4 for adjusting the attitude of the upper lens 1 and the lower lens 2; a control assembly 5 in communication connection with the measuring assembly 3 and the leveling assembly 4, and configured to: based on the position data, control the leveling assembly 4 to act, so that the fitting surfaces of the upper lens 1 and the lower lens 2 reach a predetermined parallelism.

[0031] In the lens fitting device, the upper lens 1 and the lower lens 2 are arranged opposite to each other, and a gap for pressing and fitting is reserved between them. The measuring assembly 3 is arranged in the working area of the device, and the detection ends thereof are respectively directed to the surfaces to be measured of the upper and lower lenses. In addition, the device is also equipped with an upper alignment camera 7 and a lower alignment camera 8 for performing initial positioning. The leveling assembly 4 is located at the bearing position of the lens and is mechanically connected with the lens. The control assembly 5 is installed in the interior of the equipment or in a separate control unit, and maintains signal transmission with the measuring assembly 3 and the leveling assembly 4 through electrical connection.

[0032] The main function of the measuring assembly 3 is to collect data at multiple positions of the lens surface. It simultaneously acquires the spatial coordinate information of the lower surface of the upper lens 1 and the upper surface of the lower lens 2 through a plurality of sensing points distributed in the detection range. The leveling assembly 4 is responsible for performing accurate position and angle adjustment, and it can drive the lens to move and rotate in multiple directions at micron level according to the instruction. The control assembly 5 undertakes the task of data processing and instruction generation, and it performs operation and analysis on the position information transmitted by the measuring assembly 3, determines the parameters that need to be adjusted, and sends corresponding control signals to the leveling assembly 4.

[0033] In the specific working process, first, initial coarse positioning is performed: through the upper alignment camera 7 and the lower alignment camera 8, the circular reference marks of the skirt edges of the upper lens 1 and the lower lens 2 are respectively recognized, and the control component 5 moves the upper and lower lenses to the target bonding station according to the recognition results, to complete the pre-alignment with a repeated positioning accuracy within ±5 μm. Subsequently, the measurement component 3 first scans the bonding surfaces of the upper lens 1 and the lower lens 2, and transmits the collected multiple sets of position data to the control component 5. The control component 5 processes these data representing the overall surface morphology, and calculates the accurate adjustment parameters required to achieve the expected parallelism. Subsequently, the control component 5 converts these parameters into control instructions and sends them to the leveling component 4. After receiving the instructions, the leveling component 4 drives the lens to complete the specified pose adjustment. This process is repeated until the measurement data shows that the parallelism of the bonding surface meets the set requirements.

[0034] The background technology indicates that the traditional method relies on single-point or small-amount-point measurement data, which cannot accurately reflect the overall morphology of the lens bonding surface, resulting in unsatisfactory leveling effect. In this embodiment, the measurement component 3 collects multiple-point position data of the bonding surface of the upper lens 1 and the lower lens 2, so that the control component 5 can obtain complete surface morphology information. Based on these comprehensive data, the control component 5 can accurately judge the parallel state of the current bonding surface and calculate the accurate adjustment amount. The leveling component 4 completes the corresponding attitude correction according to these instructions. Through this cycle of measurement, calculation, and execution, the system can ensure that the bonding surface of the upper lens 1 and the lower lens 2 reaches the required parallelism, thereby effectively solving the problem of insufficient bonding accuracy caused by incomplete measurement data in the background technology.

[0035] In a specific embodiment, as shown in Figure 4 The measurement component 3 includes a first measurement unit 31 and a second measurement unit 32. When the upper lens 1 and the lower lens 2 are misaligned, the first measurement unit 31 is used to measure the upper surface of the lower lens 2, and the second measurement unit 32 is used to measure the lower surface of the upper lens 1.

[0036] The first measurement unit 31 is arranged in the upper space of the lens bonding device through a mechanical connector, with its detection end vertically downward toward the working area. The second measurement unit 32 is arranged in the lower space of the device through a similar connector, with its detection end vertically upward.

[0037] During the measurement process, the upper lens 1 and the lower lens 2 are controlled by the control assembly 5 to move relatively, so that the two lenses are staggered by a spatial distance in the vertical direction. At this time, the measurement path of the first measurement unit 31 is no longer blocked by the upper lens 1, and the upper surface of the lower lens 2 can be directly scanned and measured. At the same time, the measurement path of the second measurement unit 32 is no longer hindered by the lower lens 2, and the lower surface of the upper lens 1 can be directly scanned and measured. This layout enables the two measurement units to independently measure the bonded surfaces of the two lenses. More specifically, this staggered measurement method can ensure that each measurement unit can obtain an undisturbed measurement field of view, thereby collecting more accurate position data.

[0038] The embodiment realizes independent and accurate measurement of the bonded surfaces of the upper lens 1 and the lower lens 2. Since the first measurement unit 31 and the second measurement unit 32 measure from different directions, the physical interference problem that may exist during simultaneous measurement is completely avoided, and the possibility of mutual interference of measurement signals is eliminated. Furthermore, this measurement method provides the control assembly 5 with independent and mutually non-interfering surface data of the upper lens 1 and the lower lens 2, so that the subsequent parallelism calculation and leveling control has higher reliability and accuracy, and lays a solid foundation for finally realizing high-quality lens bonding.

[0039] In specific embodiments, the first measurement unit 31 includes a plurality of first distance measuring sensors, and the second measurement unit 32 includes a plurality of second distance measuring sensors. The plurality of first distance measuring sensors and the plurality of second distance measuring sensors are arranged in a ring array around the optical axis of the lens bonding device. The first distance measuring sensors and the second distance measuring sensors are both laser distance measuring sensors. The number of first distance measuring sensors and the number of second distance measuring sensors are both not less than four.

[0040] The plurality of first distance measuring sensors and the plurality of second distance measuring sensors are arranged in a ring array around the optical axis of the lens bonding device, i.e. the plurality of first distance measuring sensors are evenly distributed on a circumference with the optical axis of the lens bonding device as the center, forming a ring-shaped measurement structure. Similarly, the plurality of second distance measuring sensors are also arranged on another circumference in the same way. This arrangement means that when the lens is in the measurement position, the sensors will simultaneously measure from multiple equal angle directions around the lens. More specifically, each first distance measuring sensor and second distance measuring sensor is a laser distance measuring sensor, which is a device that can accurately calculate the distance by emitting a laser beam and receiving a reflected signal, and can measure the vertical distance between the sensor and the corresponding points on the lens surface with micron-level precision.

[0041] The ring array arrangement can simultaneously obtain height data of multiple symmetrical positions on the lens surface, such as Figure 7The point cloud diagram is shown, thereby quickly constructing the topographic features of the entire lens surface. Compared with the single-point or small-point measurement method, this arrangement obtains a complete data set sufficient to reflect the surface flatness and tilt state through one measurement. The laser ranging sensor is used to achieve high-precision non-contact measurement, the laser beam emitted by the laser ranging sensor can accurately aim at a specific measurement point, and is not disturbed by changes in ambient light, ensuring that the position data collected has high accuracy and repeatability.

[0042] The embodiment realizes fast, comprehensive and accurate topographic measurement of the lens fitting surface. Through the synchronous work of the multiple laser ranging sensors arranged in a ring, the system can simultaneously obtain height information of multiple key positions of the lens surface, and these data collectively constitute a complete data set reflecting the entire surface morphology. Further, this measurement method not only improves the efficiency of data acquisition, but more importantly, can accurately capture the possible local depressions, protrusions or overall tilts and other topographic features of the lens surface, providing sufficient and reliable data basis for subsequent accurate parallelism calculation and attitude adjustment, thereby ultimately ensuring that the upper and lower lenses are fitted with high precision.

[0043] In specific embodiments, the measurement assembly 3 further comprises a first rotating unit and a second rotating unit, the first rotating unit is connected with the first measurement unit 31 and drives it to rotate, and the second rotating unit is connected with the second measurement unit 32 and drives it to rotate, so that the first measurement unit 31 and the second measurement unit 32 rotate around the optical axis to sample the surfaces of the upper lens 1 and the lower lens 2 at different angles.

[0044] The first rotating unit and the second rotating unit generally include a driving motor, a transmission mechanism and a rotating support component in structure. The driving motor drives the entire first measurement unit 31 or the second measurement unit 32 to rotate smoothly around the optical axis of the lens fitting device through the transmission mechanism. More specifically, this rotating mechanism can adopt the mode of a servo motor cooperating with a precision reducer, which ensures that the rotation angle can be accurately controlled, so that the multiple first ranging sensors fixed on the first measurement unit 31 can measure the upper surface of the lower lens 2 at different circumferential positions, and similarly, the second ranging sensors on the second measurement unit 32 can also measure the lower surface of the upper lens 1 at different angles. When the sensors arranged in a ring array complete the initial measurement, new supplementary measurement points can be obtained between the original measurement points by rotating a certain angle without increasing the number of sensors.

[0045] By rotating sampling, the system can cover the entire lens surface with higher point density, thereby more accurately capturing the surface microscopic fluctuation characteristics. More importantly, by comparing multiple sets of measurement data obtained at different rotation angles for the same area, the system can effectively identify and exclude abnormal measurement values caused by temporary factors, ensuring that the data set relied on for subsequent leveling calculation has high reliability, and ultimately providing a solid data foundation for achieving higher precision lens fitting.

[0046] In specific embodiments, as shown in Figure 2 The leveling assembly 4 includes an upper six-axis unit 41, a lower six-axis unit 42, an upper jig 43, and a lower jig 44. The upper jig 43 is mounted on the upper six-axis unit 41 and is used to fix the upper lens 1. The lower jig 44 is mounted on the lower six-axis unit 42 and is used to fix the lower lens 2. The upper six-axis unit 41 and the lower six-axis unit 42 are configured to drive the upper jig 43 and the lower jig 44, respectively, to move in multiple degrees of freedom.

[0047] In the lens fitting device, the upper six-axis unit 41 and the lower six-axis unit 42 are independently mounted precision motion platforms, which are arranged in an upper-lower opposite manner in space. The upper jig 43 is directly mounted on the movable end face of the upper six-axis unit 41 through a mechanical interface, while the lower jig 44 is mounted on the movable end face of the lower six-axis unit 42 in the same way. This connection relationship enables the upper six-axis unit 41 to directly drive the upper jig 43 to move in six degrees of freedom in space, while the lower six-axis unit 42 independently drives the lower jig 44 to achieve the same multi-degree-of-freedom movement. The working surface of the upper jig 43 faces downward for carrying and fixing the upper lens 1, while the working surface of the lower jig 44 faces upward for carrying and fixing the lower lens 2. The working surfaces of the two jigs are oppositely arranged to jointly form a working area for lens fitting.

[0048] The core function of the upper six-axis unit 41 and the lower six-axis unit 42 is to provide precise multi-degree-of-freedom attitude adjustment capability. They can respectively drive the upper and lower jigs to move in three directions of translation and three directions of rotation in space under the instruction of the control assembly 5, thereby realizing precise control of the spatial pose of the upper lens 1 and the lower lens 2. The main function of the upper jig 43 is to reliably fix the upper lens 1 and connect it with the movement output end of the upper six-axis unit 41, ensuring that the upper lens 1 can move accurately with the movement of the upper six-axis unit 41. Similarly, the function of the lower jig 44 is to stably fix the lower lens 2 and connect it with the movement output end of the lower six-axis unit 42, ensuring that the lower lens 2 can be accurately adjusted with the movement of the lower six-axis unit 42.

[0049] When the control assembly 5 issues a leveling instruction, the upper six-axis unit 41 and the lower six-axis unit 42 will act according to the instruction requirements at the same time or separately, drive the respective connected upper jig 43 and lower jig 44 to make precise position changes, thereby driving the upper lens 1 and the lower lens 2 fixed thereon to adjust to the target position and attitude. More specifically, the configuration of the double six-axis unit enables independent control of the spatial attitude of the upper and lower lenses, enabling both relative attitude adjustment of the upper and lower lenses and coordinated movement of the overall position, achieving precise control of the parallelism of the bonding surfaces of the upper lens 1 and the lower lens 2. Through the coordinated work of the upper six-axis unit 41 and the lower six-axis unit 42, the system can compensate for the deformation error and installation position deviation of the lens itself, ensuring that the two bonding surfaces reach the optimal parallel state before being pressed together.

[0050] The upper six-axis unit 41 and the lower six-axis unit 42, as the core executive mechanism for precise leveling, usually adopt the form of a high-precision modular motion platform in terms of specific structure. In terms of mechanical composition, each six-axis unit is essentially a precision system integrating multiple linear drive and rotary drive modules, which are combined in series or parallel through precise mechanical structures. More specifically, this structure may include three linear motion modules arranged in three mutually perpendicular directions in space, each module consisting of a high-precision guide rail, a servo motor, and a grating feedback system, responsible for realizing translation movement in the X, Y, and Z directions. At the same time, three precision rotary mechanisms are integrated at the output end of the motion platform, which usually adopt the form of a servo motor driving a harmonic reducer or use a direct drive motor, thereby realizing rotary movement around the X, Y, and Z axes.

[0051] In specific embodiments, the surface of at least one of the upper jig 43 and the lower jig 44 is provided with a vacuum suction structure and a flexible buffer structure; wherein the material of the flexible buffer structure is polyurethane.

[0052] The vacuum suction structure provided on the surface of at least one of the upper jig 43 and the lower jig 44 can include a plurality of uniformly distributed micro vacuum suction holes, which are connected to an external vacuum pump system through a pipeline. When the lens is placed on the jig, the vacuum suction holes will generate a negative pressure suction force, firmly fixing the lens on the surface of the jig and preventing displacement during leveling or bonding. At the same time, the flexible buffer structure is a layer of polyurethane material pad attached to the surface of the jig, with a hardness controlled between Shore A 50 and 60. This material has a certain elasticity and softness, and can form a buffer interface between the lens and the jig.

[0053] More specifically, the vacuum suction structure ensures the stability of lens positioning through precisely controlled suction force, while the flexible buffer structure absorbs and disperses external pressure through its elastic deformation, avoiding micro-cracks or surface damage to the lens due to hard contact or local pressure concentration. This combined design not only improves the reliability of lens fixation, but also reduces the risk of deformation caused by uneven pressure during the bonding process through the buffering effect, effectively protecting the integrity of the lens and improving the yield of the bonding process.

[0054] In specific embodiments, the motion resolution of the upper six-axis unit 41 and / or the lower six-axis unit 42 is not greater than 0.1 μm, and the repeat positioning accuracy is not greater than 0.3 μm.

[0055] The motion resolution of the upper six-axis unit 41 and the lower six-axis unit 42 is not greater than 0.1 microns, which means that these units can make movement adjustments with extremely small steps, with each step of movement controlled within 0.1 microns, thus achieving fine control of the lens attitude; at the same time, their repeat positioning accuracy is not greater than 0.3 microns, indicating that after multiple executions of the same motion, the unit can stably return to the target position with an error of not more than 0.3 microns, ensuring the consistency and reliability of the action. The combination of high resolution and repeat accuracy enables the upper six-axis unit 41 and the lower six-axis unit 42 to accurately respond to the instructions of the control component 5 during the leveling process, compensating for the small deformation and positional deviation of the lens due to processing or installation. Further, this precise motion capability directly improves the stability of the bonding process, enabling the bonded surfaces of the upper and lower lenses to quickly achieve the required parallelism, effectively reducing the risk of optical axis deviation and poor bonding.

[0056] In specific embodiments, the lens bonding device further comprises a monitoring component 6, which includes a visual sensor for monitoring lens deformation and a pressure sensor for monitoring bonding pressure, and the control component 5 is in communication with the monitoring component 6, as shown in Figure 1 The monitoring component 6 dynamically controls the leveling component 4 for compensation adjustment according to the feedback signal of the monitoring component 6, and triggers adjustment when the pressure exceeds the pressure preset value or the deformation exceeds the deformation preset value, wherein the pressure preset value is 0.4 MPa and the deformation preset value is 2 μm.

[0057] The visual sensor can be arranged on the side or above the working area of the device, with its optical axis directly aligned with the bonding gap area between the upper and lower lenses, so as to capture the image changes of the lens surface in real time; at the same time, the pressure sensor can be integrated into the support structure of the upper jig 43 or the lower jig 44, or combined with the vacuum suction structure, so as to directly detect the force distribution applied on the lens contact surface during the bonding process. More specifically, this arrangement ensures that the visual sensor can monitor the deformation state of the lens without obstruction, while the pressure sensor can accurately perceive the local or overall pressure value, providing real-time feedback for the system.

[0058] The main function of the visual sensor is to monitor the possible microscopic deformation of the upper and lower lenses during the pressing and bonding process, such as identifying the convex or concave changes in the local area through image analysis; the function of the pressure sensor is to measure and feedback the pressure value and distribution uniformity in the bonding operation in real time, ensuring that the pressure value is maintained within the preset safe range. More specifically, the visual sensor prevents lens damage by capturing subtle differences in surface topography, while the pressure sensor avoids poor bonding caused by uneven pressure by monitoring force distribution, and both work together to improve the accuracy of process control.

[0059] The control component 5 is connected with the monitoring component 6 through signal lines, continuously receiving deformation data from the visual sensor and pressure data from the pressure sensor; when the detected pressure value exceeds 0.4 MPa or the deformation value exceeds 2 μm, the control component 5 will immediately generate compensation instructions and send them to the leveling component 4, driving the upper six-axis unit 41 or the lower six-axis unit 42 to adjust the pose to correct the deviation. This dynamic feedback mechanism enables the system to respond to abnormal situations in real time during the bonding process, preventing permanent damage to the lens or optical axis deviation caused by instantaneous overpressure or deformation accumulation.

[0060] In the lens bonding device provided in Example 1, during operation, the upper lens 1 is first placed on the surface of the upper fixture 43, and the lower lens 2 is placed on the surface of the lower fixture 44. The upper fixture 43 and the lower fixture 44 generate negative pressure adsorption force through the vacuum adsorption structure on their surfaces, which firmly fixes the lenses. At the same time, the flexible buffer structure provides protection to avoid damage from hard contact. Subsequently, the measuring component 3 starts to work. The first measuring unit 31 and the second measuring unit 32 respectively use multiple first and second ranging sensors arranged in a ring array around the optical axis to perform non-contact scanning of the bonding surface of the upper and lower lenses, acquiring position data of multiple points. The first and second rotation units drive the first measuring unit 31 and the second measuring unit 32 to rotate around the optical axis, performing multiple rounds of sampling from different angles to increase data density and accuracy. After receiving these position data, the control component 5... The system performs calculations and analysis to determine the current parallelism of the mating surfaces of the upper lens 1 and lower lens 2, and generates corresponding adjustment commands. The leveling component 4 operates according to these commands, with the upper six-axis unit 41 and lower six-axis unit 42 driving the upper fixture 43 and lower fixture 44 to perform multi-degree-of-freedom fine adjustments with high motion resolution and repeatability, correcting lens attitude deviations and ensuring the mating surfaces achieve the predetermined parallelism. During the pressing and bonding stage, the upper six-axis unit 41 and lower six-axis unit 42 drive the lenses closer together at low speed. At this time, the vision sensor of the monitoring component 6 monitors the deformation of the lens surface in real time, and the pressure sensor detects the bonding pressure distribution. The control component 5 continuously receives these feedback signals. When the pressure exceeds 0.4 MPa or the deformation exceeds 2 micrometers, the leveling component 4 is immediately dynamically controlled to perform compensation adjustments, ensuring a smooth bonding process and ultimately achieving high-precision bonding, effectively avoiding optical axis misalignment and lens damage.

[0061] Example 2 This embodiment provides a lens bonding method using the lens bonding device described in Embodiment 1, such as... Figure 8 As shown, it includes the following steps: Measurement: Move the upper lens 1 and / or lower lens 2 so that they are not simultaneously in the bonding position, and acquire multiple position data of the bonding surface of the upper lens 1 and the bonding surface of the lower lens 2 through the measurement component 3, for example, acquire twelve points respectively; Leveling calculation: Based on the multiple position data, calculate the adjustment amount required to make the bonding surfaces of the upper lens 1 and the lower lens 2 achieve a predetermined parallelism; Leveling execution: Drive the leveling component 4 according to the adjustment amount to adjust the posture of the upper lens 1 and / or lower lens 2; Pressing and bonding: Control the upper lens 1 and the lower lens 2 to press and bond.

[0062] In the lens fitting method, the measuring step first moves the upper lens 1 and / or the lower lens 2 by the control assembly 5 to stagger their positions so as not to be in the fitting station at the same time, so that the measuring assembly 3 can independently scan the fitting surface of the upper lens 1 and the fitting surface of the lower lens 2 respectively, and obtain comprehensive position data through multiple measuring points, so as to accurately capture the overall topography and local relief features of each surface; more specifically, this staggered measurement method avoids mutual occlusion between the lenses, ensuring the completeness and accuracy of data acquisition. The leveling calculation step is processed and analyzed by the control assembly 5 based on the collected multiple position data, and the accurate adjustment amount required for the fitting surfaces of the upper lens 1 and the lower lens 2 to reach the predetermined parallelism is calculated by algorithm, including fine adjustment parameters of displacement and angle; further, this step uses multiple point data to average local errors to generate reliable leveling instructions. The leveling execution step then drives the leveling assembly 4 to act according to the calculated adjustment amount, adjusts the spatial pose of the upper lens 1 and / or the lower lens 2, and realizes fine pose correction; more specifically, the leveling assembly 4 compensates for the inherent deviation of the lens through multi-degree-of-freedom motion, ensuring that the fitting surfaces gradually approach a parallel state. The pressing fitting step finally controls the upper lens 1 and the lower lens 2 to press and fit with each other at a low speed, completing the fitting process; further, this step is performed under the monitoring of the control assembly 5, ensuring that the pressing action is uniform and impact-free, and avoiding damage to the lenses.

[0063] The embodiment can realize high-precision lens fitting, guide accurate leveling action through comprehensive measurement data, effectively compensate for the machining errors and installation deviations of the lenses, and ensure that the fitting surfaces reach a high degree of parallelism; this closed-loop control process reduces the leveling failure caused by incomplete data in traditional methods, and significantly reduces the risk of optical axis deviation and poor fitting.

[0064] In specific embodiments, the measuring assembly 3 includes a first measuring unit 31 and a second measuring unit 32; the measuring step includes: measuring multiple position data of the upper surface of the lower lens 2 by the first measuring unit 31, and measuring multiple position data of the lower surface of the upper lens 1 by the second measuring unit 32.

[0065] When the measuring assembly 3 includes the first measuring unit 31 and the second measuring unit 32, the positions of the upper lens 1 and the lower lens 2 are adjusted by the control assembly 5 to stagger them vertically to avoid mutual occlusion, so that the first measuring unit 31 can directly scan the upper surface of the lower lens 2 to obtain position data of multiple points, and at the same time the second measuring unit 32 directly scans the lower surface of the upper lens 1 to obtain position data of multiple points, thereby realizing independent and non-contact measurement of the fitting surface of each lens; this staggered arrangement ensures that the measurement path is not disturbed, and the first measuring unit 31 and the second measuring unit 32 can work synchronously or sequentially to collect high-density data points representing the overall topography.

[0066] In specific embodiments, the first measurement unit 31 is driven to rotate by a first rotating unit of the measurement assembly 3; and / or the second measurement unit 32 is driven to rotate by a second rotating unit of the measurement assembly 3, for multi-round sampling from different angles; and, in the leveling calculation step, abnormal measurement points are identified and excluded by comparing data sampled from different angles, and the adjustment amount is calculated based on the set of valid measurement points after screening.

[0067] In the lens fitting process, the first rotating unit drives the first measurement unit 31 to rotate around the optical axis, and the second rotating unit drives the second measurement unit 32 to rotate around the optical axis, so that they can perform multi-round sampling on the fitting surfaces of the upper and lower lenses from multiple different angles; more specifically, such rotating action allows the measurement units to add additional measurement points in the same circumferential area of the lens surface by rotating a certain angle on the basis of the original annular array arrangement, thereby obtaining a more intensive set of height data; further, multi-round sampling improves the coverage and uniformity of data collection, which can more comprehensively capture the micro undulations and local deformation characteristics of the lens surface, reduce the omission caused by single measurement blind spots or random errors, and thus provide more abundant and accurate surface topography information for subsequent leveling calculation, effectively improving the reliability of fitting accuracy.

[0068] In the leveling calculation step, the control assembly 5 compares and analyzes multiple data sets obtained from different angle sampling, for example, if the height values measured at different rotation angles for the same physical position of the lens surface are significantly different, the point is marked as an abnormal measurement point and excluded; more specifically, the system can set a tolerance threshold, such as 2 microns, and when the deviation of multiple measurement values for the same position exceeds the threshold, it is considered as an abnormal point and automatically filtered by algorithm; further, through this data screening mechanism, the system can filter out distorted data caused by temporary interference such as dust, vibration or sensor transient error, ensuring that the measurement point set used to calculate the adjustment amount has high consistency and accuracy; this improves the reliability of the leveling instruction, so that the upper six-axis unit 41 and the lower six-axis unit 42 can make accurate adjustments based on the true surface topography, thereby effectively reducing the optical axis deviation and defective rate in the fitting process and improving the overall process stability.

[0069] In specific embodiments, the measurement step includes: performing multi-layer interface measurement on the upper lens 1 and the lower lens 2 respectively to obtain position data of at least two different optical interfaces of each lens; and using a higher sampling density for the center region of the upper lens 1 and the lower lens 2 than for the edge region.

[0070] In the measurement step of the lens fitting method, multi-layer interface measurement is performed on the upper lens 1 and the lower lens 2, that is, the ranging capability of the first measurement unit 31 and the second measurement unit 32 is used to not only obtain the data of the outermost surface of the lens, but also to penetrate the transparent medium to obtain the position information of the internal key optical interface, for example, for the upper lens 1, the base interface of its lower surface and the optical film layer surface attached thereto can be measured at the same time, so as to obtain at least two groups of height data representing different structural layers; more specifically, this measurement method can reveal the thickness difference or interlayer stress deformation existing in the internal structure of the lens composite structure. At the same time, in the spatial sampling, the central optical area of the upper lens 1 and the lower lens 2 adopts a more dense measurement point layout, for example, the point spacing is set to 0.5 mm, while the edge area adopts a relatively loose spacing such as 1.0 mm for measurement; such differentiated sampling density is designed based on the optical path characteristics of the optical element, because the central area is usually the imaging core channel, and the accuracy of its topography is more critical to the optical performance. The effect of this comprehensive measurement strategy is that it can construct a more complete topography atlas of the lens in the depth dimension and the plane dimension, and the multi-layer interface measurement helps to identify and separate the inherent deviation introduced by the lamination process, and the high-density sampling of the central area ensures the ultra-fine control of the key area; the rich data set obtained by the embodiment enables the control component 5 to better understand the real attitude of the lens, so as to calculate more targeted leveling amount, and finally significantly improve the optical axis alignment accuracy and imaging quality of the fitted component.

[0071] In specific embodiments, the leveling calculation step comprises: based on the pre-stored theoretical fitting gap ΔZ_ideal, and the position data measured from one target optical interface selected from the upper lens 1 and the lower lens 2, calculating the measured deviation ΔZ_i between the two target optical interfaces; The control component 5 is based on the pre-stored theoretical fitting gap ΔZ_ideal, which is determined in advance according to the design parameters, including the thickness of the adhesive layer and the thickness of the air layer, representing the distance that the upper lens 1 and the lower lens 2 should maintain in the ideal state; More specifically, from the selected target optical interface on the upper lens 1, such as the optical film layer on its lower surface, a plurality of position data Z2i is measured by the second measuring unit 32, while from the selected target optical interface on the lower lens 2, such as the optical film layer on its upper surface, a plurality of position data Z4i is measured by the first measuring unit 31; Then, for each corresponding measuring point i, the measured deviation ΔZ_i is calculated, that is, ΔZ_i = Z2i-(Z4i+ΔZ_ideal), which represents the difference value between the actual measured gap and the theoretical gap. The effect of this calculation method is that it can accurately quantify the local deviation between the fitting surfaces of the upper and lower lenses, so that the control component 5 can identify which areas have excessive or insufficient gaps; Based on these deviation data, the system can generate targeted leveling instructions to drive the leveling component 4 to make accurate compensation, such as adjusting the attitude of the lens through the upper six-axis unit 41 and the lower six-axis unit 42, which ensures that the fitting surfaces of the upper lens 1 and the lower lens 2 are highly parallel before being pressed and fitted, effectively reducing the optical axis deviation and poor fitting caused by local gap unevenness, thereby improving the imaging quality of the lens assembly and the overall production yield.

[0072] In specific embodiments, leveling instructions are generated based on the measured deviation ΔZ_i, which are used to drive the leveling component 4 to move in multiple degrees of freedom to compensate for the measured deviation.

[0073] The control component 5 generates specific leveling instructions based on the calculated measured deviations ΔZ_i, which contain accurate parameters required to drive the leveling component 4 to move in multiple degrees of freedom, such as instructing the upper six-axis unit 41 and the lower six-axis unit 42 to move in the X and Y directions to compensate for ΔX and ΔY, to tilt around the θX and θY axes to compensate for ΔθX and ΔθY, and to make micro-displacement in the Z direction to correct the overall height; More specifically, these instructions are calculated according to the deviation distribution of different positions on the lens surface, aiming to make the fitting surfaces of the upper lens 1 and the lower lens 2 reach the parallel state through the coordinated movement of multiple degrees of freedom. The effect of generating multi-dimensional leveling instructions based on the measured deviation is that it can actively and accurately compensate for the comprehensive gap unevenness caused by lens processing errors, multi-layer structure deformation, and installation attitude deviation.

[0074] Further, through the high-precision execution of the leveling assembly 4, the system can convert the theoretical adjustment amount into actual pose correction, effectively eliminate the local tilt and height difference of the bonding surface, and thus ensure the formation of a uniform and design-requirement-compliant gap between the two optical interfaces before the pressing bonding, thereby significantly improving the optical axis alignment precision and optical performance consistency of the bonded assembly.

[0075] To more specifically and comprehensively demonstrate the leveling calculation process, the following detailed data is provided. Assume that the theoretical bonding gap ΔZ_ideal is 0.0010 mm (1.0 µm).

[0076] For a certain measurement point i, the measured position data Z2i of the upper lens target optical interface is 10.000 mm, and the measured position data Z4i of the lower lens target optical interface is 9.9985 mm. According to the formula ΔZ_i = Z2i - (Z4i + ΔZ_ideal), the measured deviation of this point is calculated as ΔZ_i = 10.0000 - (9.9985 + 0.0010) = 10.0000 - 9.9995 = +0.0005 m. This positive value indicates that the actual gap between the upper lens and the lower lens at this measurement point is 0.0005 mm larger than the theoretical gap.

[0077] In actual applications, the system will measure and calculate multiple points. The following table simulates the data of 10 measurement points, fully demonstrating the leveling calculation process: From the data in the above table, the key conclusion is that the measured deviations ΔZ_i present irregular distribution with positive (+), negative (-), and zero (0) at multiple measurement points. This proves that there is a complex relative tilt and unevenness between the bonding surfaces of the upper lens and the lower lens, rather than a simple overall parallel shift. Therefore, the control assembly 5 must perform comprehensive calculations based on the deviation data set of all 10 measurement points to solve the leveling instructions that can optimally eliminate these deviations as a whole. The instructions drive the leveling assembly 4 (the upper six-axis unit 41 and the lower six-axis unit 42) to perform a complex motion containing multiple degrees of freedom (such as translation in X, Y, and Z directions and rotation around axes), thereby compensating for the identified tilt and unevenness, and finally making the gap of the entire bonding surface uniform and consistent, achieving the predetermined parallelism.

[0078] In specific embodiments, the pressing speed in the pressing bonding step is 0.05-0.1 mm / s.

[0079] The pressing speed is controlled in the range of 0.05 to 0.1 millimeter per second, which means that the upper lens 1 and the lower lens 2 are slowly moved towards each other and completed pressing under the accurate instruction of the control component 5; this low-speed pressing process allows the glue layer or air layer to have sufficient time to be evenly distributed and slowly discharged, avoiding the instantaneous pressure concentration or fluid dynamic disturbance caused by rapid movement; and the slow pressing speed provides stable monitoring conditions for the visual sensor and pressure sensor of the monitoring component 6, so that they can capture the micro deformation and pressure change of the lens surface in real time, and once the abnormality such as deformation exceeding 2 microns or pressure exceeding 0.4 megapascal is detected, the control component 5 can immediately respond and drive the leveling component 4 to make dynamic adjustment, thereby effectively reducing the risk of lens damage and poor fitting, and finally ensuring that the optical axis deviation of the fitted component is minimized and the overall production yield is improved.

[0080] The lens fitting method provided in Embodiment 2 comprehensively captures the lens topography through high-density multi-point measurement, calculates the leveling amount based on accurate data and drives the six-axis platform to make micron-level attitude compensation, and dynamically corrects the abnormality in the fitting process in combination with low-speed pressing and real-time monitoring. This set of processes systematically eliminates the inherent errors of the lens and the process fluctuations, and finally realizes high-precision fitting with an optical axis deviation of less than 20 μm, significantly improving the optical performance and production yield of the product.

[0081] The above describes only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A lens bonding device for bonding an upper lens and a lower lens, characterized in that, The lens bonding device includes: A measurement component is used to acquire position data of the mating surfaces of the upper and lower lenses through multiple measurement points; A leveling assembly is used to adjust the orientation of the upper and lower lenses; A control component, communicatively connected to the measuring component and the leveling component, is configured to: control the leveling component to operate based on the position data, so that the mating surfaces of the upper and lower lenses achieve a predetermined parallelism.

2. The lens bonding device according to claim 1, characterized in that, The measuring assembly includes a first measuring unit and a second measuring unit. When the upper lens and the lower lens are misaligned, the first measuring unit is used to measure the upper surface of the lower lens, and the second measuring unit is used to measure the lower surface of the upper lens.

3. The lens bonding device according to claim 2, characterized in that, The first measuring unit includes multiple first ranging sensors, and the second measuring unit includes multiple second ranging sensors. The multiple first ranging sensors and the multiple second ranging sensors are arranged in a ring array around the optical axis of the lens bonding device; wherein, the first ranging sensors and the second ranging sensors are both laser ranging sensors.

4. The lens bonding device according to claim 3, characterized in that, The measurement assembly further includes a first rotating unit and a second rotating unit. The first rotating unit is connected to the first measurement unit and drives it to rotate. The second rotating unit is connected to the second measurement unit and drives it to rotate, so that the first measurement unit and the second measurement unit rotate around the optical axis to sample the surfaces of the upper lens and the lower lens at different angles.

5. The lens bonding device according to claim 1, characterized in that, The leveling assembly includes an upper six-axis unit, a lower six-axis unit, an upper fixture, and a lower fixture. The upper fixture is mounted on the upper six-axis unit and is used to fix the upper lens. The lower fixture is mounted on the lower six-axis unit and is used to fix the lower lens. The upper and lower six-axis units are configured to drive the upper and lower fixtures to perform multi-degree-of-freedom motion, respectively.

6. The lens bonding device according to claim 5, characterized in that, At least one of the upper fixture and the lower fixture has a vacuum adsorption structure and a flexible buffer structure on its surface; wherein the flexible buffer structure is made of polyurethane.

7. The lens bonding device according to claim 5, characterized in that, The motion resolution of the upper six-axis unit and / or the lower six-axis unit is no greater than 0.1 μm, and the repeatability is no greater than 0.3 μm.

8. The lens bonding device according to claim 1, characterized in that, The lens bonding device also includes a monitoring component, which includes a visual sensor for monitoring lens deformation and a pressure sensor for monitoring bonding pressure. The control component is communicatively connected to the monitoring component and dynamically controls the leveling component to make compensation adjustments based on the feedback signal from the monitoring component. Adjustment is triggered when the pressure exceeds a preset pressure value or the deformation exceeds a preset deformation value.

9. A method for bonding a lens, using the lens bonding device as described in any one of claims 1-8, characterized in that, Includes the following steps: Measurement: Move the upper lens and / or the lower lens so that they are not simultaneously in the bonding position, and acquire multiple position data of the bonding surface of the upper lens and the bonding surface of the lower lens through the measurement component; Leveling calculation: Based on the multiple position data, calculate the adjustment amount required to make the bonding surfaces of the upper lens and the lower lens achieve a predetermined parallelism. Leveling execution: Drive the leveling component according to the adjustment amount to adjust the posture of the upper lens and / or lower lens; Pressing and bonding: Control the upper lens and lower lens to press and bond together.

10. The lens bonding method according to claim 9, characterized in that, The measurement assembly includes a first measurement unit and a second measurement unit; the measurement steps include: measuring multiple position data of the upper surface of the lower lens using the first measurement unit, and measuring multiple position data of the lower surface of the upper lens using the second measurement unit.

11. The lens bonding method according to claim 10, characterized in that, The first measuring unit is driven to rotate by the first rotating unit of the measuring component; and / or the second measuring unit is driven to rotate by the second rotating unit of the measuring component, performing multiple rounds of sampling from different angles; and in the leveling calculation step, abnormal measurement points are identified and excluded by comparing the data sampled from different angles, and the adjustment amount is calculated based on the filtered set of valid measurement points.

12. The lens bonding method according to claim 9, characterized in that, The measurement steps include: performing multi-layer interface measurements on the upper lens and the lower lens respectively to obtain position data of at least two different optical interfaces of each lens; and measuring the central region of the upper lens and the lower lens using a higher sampling density than the edge region.

13. The lens bonding method according to claim 12, characterized in that, The leveling calculation step includes: based on the pre-stored theoretical fitting gap ΔZ_ideal and the position data measured from a target optical interface selected from the upper lens and the lower lens respectively, calculating the measured deviation ΔZ_i between the two target optical interfaces.

14. The lens bonding method according to claim 13, characterized in that, A leveling command is generated based on the measured deviation ΔZ_i. The leveling command is used to drive the leveling component to perform multiple degrees of freedom of motion in order to compensate for the measured deviation.

15. The lens bonding method according to claim 9, characterized in that, The pressing speed in the pressing and bonding step is 0.05-0.1 mm / s.

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