Lens assembly method and lens assembly equipment

Abstract

The present invention discloses a lens assembly method and a lens assembly device, which relate to the technical field of eyeglass lens assembly device structure. The lens assembly method comprises the following steps: obtaining the coordinates of the center of the lens on a reference plane; obtaining the distance between a set measuring point and the lens; calculating the actual difference in the distance between the two set measuring points and the lens based on the distance between the two set measuring points and the lens; obtaining the pitch angle information between the lens mounting plane and the reference plane; calculating the target difference in the distance between the two set measuring points and the lens based on the pitch angle information, the coordinate information of the center of the circle, and the coordinate information of the set measuring point corresponding to the reference plane; obtaining the adjustment parameter of the lens based on the actual difference and the target difference; and controlling the activity of the first pickup part based on the adjustment parameter to adjust the posture of the lens. The present invention aims to provide a lens assembly device for bilateral curved lenses and a corresponding lens assembly method.

Description

Technical Field

[0001] The present invention relates to the technical field of spectacle lens assembly device structures, and in particular to a lens assembly method and lens assembly equipment. Background Art

[0002] Currently, in the AR (Augmented Reality) glasses industry, the technical lenses used in AR glasses are basically provided with flat surfaces. The flat lenses can be placed on a reference plane and leveled by scanning the plane with a 3D camera. However, in subsequent developed products, the end faces of the lenses have a biconvex or concave-convex structure on both sides, and are high-lens lenses. This makes it impossible for the 3D camera to directly obtain its three-dimensional information, that is, it is impossible to intuitively adjust the pitch angle during installation. Therefore, a corresponding lens assembly method is urgently needed to solve the above problems. Summary of the Invention

[0003] The main purpose of the present invention is to propose a lens assembly method and a lens assembly device, aiming to provide a lens assembly device for bilateral curved lenses and a matching lens assembly method.

[0004] To achieve the above objectives, the present invention provides a lens assembly method, which is based on a lens assembly device and is used to assemble a lens with bilateral curved surfaces onto a mounting base, wherein the lens assembly device includes an adjustment device, a two-dimensional position detection device, and a distance detection device, wherein the adjustment device has a first pickup portion, and the first pickup portion has a transverse axial and longitudinal axial rotational freedom so as to be able to pick up the lens and adjust the position of the lens. The lens assembly method includes the following steps:

[0005] After the first picking unit picks up the lens, obtaining the center coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device;

[0006] Obtaining distances between the lens and set measurement points in a plurality of set measurement point groups on a set reference plane measured by the distance detection device, wherein the set reference plane is parallel to the base plane, the set reference plane has a reference circle center corresponding to the circle center of the lens, and each set measurement point group includes two set measurement points that are equidistant from the reference circle center;

[0007] Calculating actual differences in the distances between the lens and two set measurement points in a set set measurement point group on a set reference plane measured by the distance detection device;

[0008] Obtaining pitch angle information between the lens mounting plane and the reference plane;

[0009] Calculating and obtaining a target difference in distance between the two set measurement points in each set measurement point group and the lens based on the pitch angle information, the coordinate information of the circle center coordinates, and the coordinate information of the two set measurement points in each set measurement point group corresponding to the reference plane;

[0010] Obtaining adjustment parameters of the lens according to the actual difference and the target difference;

[0011] According to the adjustment parameter, the first picking portion is controlled to move so as to adjust the posture of the lens.

[0012] In one embodiment, the multiple set measurement point groups include two set measurement point groups, the two set measurement points in one set measurement point group are located on both sides of the reference circle center in the horizontal direction, and the two set measurement points in the other set measurement point group are located on both sides of the reference circle center in the vertical direction.

[0013] In one embodiment, after the step of controlling the movement of the pickup portion according to the adjustment parameter to adjust the posture of the lens, the method further includes the following steps:

[0014] again obtaining the coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device;

[0015] again obtaining the distances between the lens and the set measurement points in the set measurement point group on the set reference plane measured by the distance detection device, and calculating and obtaining actual differences in the distances between two of the set measurement points and the lens;

[0016] comparing the target difference with the actual difference;

[0017] When the difference between the two is greater than a preset value, obtaining the adjustment parameter of the lens, and controlling the first picking part to move again to adjust the posture of the lens;

[0018] When the difference between the two is less than or equal to the preset value, the adjustment is completed.

[0019] In one embodiment, the distance detection device comprises a spectral confocal sensor.

[0020] In one embodiment, after the first picking unit picks up the lens, the step of obtaining the center coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device includes:

[0021] After the first picking unit picks up the lens, a planar image of the lens on the reference plane is acquired by the two-dimensional position detection device;

[0022] The coordinates of the center of the lens on the reference plane are calculated based on the plane image.

[0023] In one embodiment, the lens assembly device further includes a second pickup portion and a three-dimensional image detection device disposed corresponding to the second pickup portion;

[0024] The step of obtaining pitch angle information between the lens mounting plane and the reference plane comprises:

[0025] After the second pickup unit picks up the lens mounting base, controlling the three-dimensional image detection device to obtain a three-dimensional image of the lens mounting base;

[0026] The pitch angle information between the lens mounting plane on the lens mounting base and the reference plane is obtained by calculation according to the stereoscopic image.

[0027] In one embodiment, the first picking portion further has horizontal, vertical, and vertical freedom of movement;

[0028] After the step of controlling the movement of the pickup portion according to the adjustment parameter to adjust the posture of the lens, the method further includes the following steps:

[0029] Obtaining the relative position information between the mounting point of the lens mounting base and the lens;

[0030] According to the relative position information, the first picking portion is controlled to move so as to place the lens at a mounting point of the lens mounting base.

[0031] In one embodiment, the step of obtaining relative position information between the mounting point of the lens mounting base and the lens includes:

[0032] Controlling the two-dimensional position detection device to obtain a planar image of the relative position of the lens mounting base and the lens;

[0033] The plane relative position information of the mounting point of the lens mounting base and the center of the lens is calculated and obtained based on the relative position plane image.

[0034] In one embodiment, the lens assembly device further includes a second pickup portion and a three-dimensional image detection device disposed corresponding to the second pickup portion;

[0035] The step of obtaining the relative position information between the mounting point of the lens mounting base and the lens includes:

[0036] When the second pickup unit picks up the lens mounting base, controlling the three-dimensional camera device to obtain a stereoscopic image of the lens mounting base, and obtaining a first matching distance between the mounting point of the lens mounting base and the set reference plane based on the stereoscopic image;

[0037] Controlling the distance detection device to detect the distance between the lens and the set reference plane at the center coordinates of the circle, and obtaining a preset lens thickness to calculate a second fitting distance between the center of the lens and the set reference plane;

[0038] The relative position information between the mounting point of the lens mounting base and the center of the lens is calculated based on the first fitting distance and the second fitting distance.

[0039] The present invention further provides a lens assembly device, wherein the lens assembly device comprises:

[0040] The first picking portion has a rotational freedom in a transverse axis and a longitudinal axis for picking up a lens;

[0041] a two-dimensional position detection device, provided corresponding to the first picking portion;

[0042] a distance detection device, provided corresponding to the first pickup portion; and

[0043] A control device is electrically connected to the first picking portion, the two-dimensional position detection device, and the distance detection device. The control device includes a memory, a processor, and a control program for the lens assembly device stored in the memory and executable on the processor. The control program for the lens assembly device is configured to implement the steps of the lens assembly method described above.

[0044] In one embodiment, the lens assembly equipment further includes a second pickup portion and a three-dimensional image detection device disposed corresponding to the second pickup portion.

[0045] In one embodiment, the first picking portion has freedom of movement in lateral, longitudinal, and up and down directions.

[0046] The technical solution of the present invention aims to use the distance detection device to detect the distance from the end face of the hyperbolic lens to the distance detection device. After multi-point measurement, the pitch information of the lens relative to the reference plane is obtained according to the difference in distances measured by the selected multiple groups of points, and then compared with the pitch information of the lens mounting plane relative to the reference plane, so as to adjust the lens to meet the lens installation conditions. Specifically, based on the fact that the lens is basically a circular lens, the center coordinates of the center of the lens on the reference plane are first obtained through the two-dimensional position detection device. Here, if the two-dimensional position detection device is placed above and below the lens, the reference plane defaults to a horizontal plane. After obtaining the center coordinates, the set reference plane is obtained with the measuring end of the distance detection device as a reference. The set reference plane is parallel to the reference plane. At the same time, the reference center corresponding to the center of the lens is obtained on the set reference plane, and the set measurement points opposite to the reference center on both sides are obtained to form a set measurement point group. Then, the distance detection device is controlled to measure the distance between the two set measurement points in the set measurement point group and the end face of the lens, and the height difference of the end face of the lens at the position corresponding to the two set measurement points is calculated to be the actual difference. At this time, the pitch angle information between the lens mounting plane and the reference plane is obtained. At the same time, based on the coordinate information of the center coordinates and the coordinate information of the two set measurement points in the set measurement point group corresponding to the reference plane, the distance between the two set measurement points on the reference plane is obtained. At this time, the target difference of the distance between the lens mounting plane and the reference plane at the two set measurement points can be obtained through the pitch angle information. Then, the adjustment parameters of the lens can be calculated through the obtained target difference and the actual difference. The adjustment parameters serve as a basis for controlling the activity of the first picking part to adjust the first picking part, and then adjust the posture of the lens picked up by the first picking part, so that the actual difference is close to the target difference, that is, the pitch information of the lens is close to the pitch angle information of the lens mounting plane, so that they match, so as to ensure the accuracy of the subsequent installation of the lens on the lens mounting plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0048] Figure 1A schematic flow chart of a first embodiment of a lens assembly method provided by the present invention;

[0049] Figure 2 A schematic flow chart of a second embodiment of the lens assembly method provided by the present invention;

[0050] Figure 3 A schematic flow chart of a third embodiment of the lens assembly method provided by the present invention;

[0051] Figure 4 A schematic flow chart of a fourth embodiment of the lens assembly method provided by the present invention;

[0052] Figure 5 A schematic flow chart of a fifth embodiment of the lens assembly method provided by the present invention;

[0053] Figure 6 A schematic flow chart of a sixth embodiment of the lens assembly method provided by the present invention;

[0054] Figure 7 A schematic flow chart of a seventh embodiment of the lens assembly method provided by the present invention;

[0055] Figure 8 for Figure 1 A schematic diagram of the structure of the control system of the hardware operating environment involved in the embodiment;

[0056] Figure 9 This is a schematic diagram of the three-dimensional structure of the lens assembly equipment provided by the present invention.

[0057] Description of Figure Numbers:

[0058] 100. Lens assembly equipment; 1. Adjustment device; 11. First pickup unit; 2. Two-dimensional position detection device; 3. Distance detection device; 4. Second pickup unit; 5. Three-dimensional image detection device; 6. Control device; 1001. Processor; 1002. Communication bus; 1003. User interface; 1004. Network interface; 1005. Memory.

[0059] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0061] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0062] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] Currently, in the AR (Augmented Reality) glasses industry, the technical lenses used in AR glasses are basically provided with flat surfaces. The flat lenses can be placed on a reference plane and leveled by scanning the plane with a 3D camera. However, in subsequent developed products, the end faces of the lenses have a biconvex or concave-convex structure on both sides, and are high-lens lenses. This makes it impossible for the 3D camera to directly obtain its three-dimensional information, that is, it is impossible to intuitively adjust the pitch angle during installation. Therefore, a corresponding lens assembly method is urgently needed to solve the above problems.

[0064] In view of this, the present invention proposes a lens assembly method, please refer to Figures 1 to 7 , is an embodiment of the lens assembly method, and the lens assembly method will be described in detail below with reference to specific drawings.

[0065] See also Figures 1 to 7 The lens assembly method is based on a lens assembly device 100, which is used to assemble a bilaterally curved lens onto a mounting base. The lens assembly device 100 includes an adjustment device 1, a two-dimensional position detection device 2, and a distance detection device 3. The adjustment device 1 has a first pickup portion 11, and the first pickup portion 11 has a transverse axial and longitudinal axial rotational freedom to pick up the lens and adjust the position of the lens. The steps of the lens assembly method include:

[0066] S100: After the first picking unit 11 picks up the lens, the center coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device 2 are obtained;

[0067] S200: Obtaining distances between the lens and set measurement points in a plurality of set measurement point groups on a set reference plane measured by the distance detection device 3, wherein the set reference plane is parallel to the base plane, the set reference plane has a reference circle center corresponding to the circle center of the lens, and each set measurement point group includes two set measurement points that are equidistant from the reference circle center.

[0068] S300: Calculating actual differences in the distances between the lens and two set measurement points in a set set measurement point group on a set reference plane measured by the distance detection device 3;

[0069] S400: Acquire pitch angle information between the lens mounting plane and the reference plane;

[0070] S500: Calculating and obtaining a target difference in distance between the two set measurement points in each set measurement point group and the lens based on the pitch angle information, the coordinate information of the circle center coordinates, and the coordinate information of the two set measurement points in each set measurement point group corresponding to the reference plane;

[0071] S600: Acquire adjustment parameters of the lens according to the actual difference and the target difference;

[0072] S700: According to the adjustment parameter, the first picking portion 11 is controlled to move to adjust the posture of the lens.

[0073] In the technical solution of the present invention, the distance detection device 3 is used to detect the distance from the end face of the hyperbolic lens to the distance detection device 3. After multi-point measurement, the pitch information of the lens relative to the reference plane is obtained according to the difference in distances measured by the selected multiple groups of points, and then compared with the pitch information of the lens mounting plane relative to the reference plane, so as to adjust the lens to meet the lens installation conditions. Specifically, based on the fact that the lens is basically a circular lens, the center coordinates of the center of the lens on the reference plane are first obtained through the two-dimensional position detection device 2. Here, if the two-dimensional position detection device 2 is placed above and below the lens, the reference plane defaults to a horizontal plane. After obtaining the center coordinates, the measuring end of the distance detection device 3 is used as a reference to obtain the set reference plane. The set reference plane is parallel to the reference plane. At the same time, the reference center corresponding to the center of the lens is obtained on the set reference plane, and the set measurement points opposite to the reference center on both sides are obtained to form a set measurement point group. Then, the distance detection device 3 is controlled to measure the distance between the two set measurement points in the set measurement point group and the end face of the lens, and the height difference of the end face of the lens at the position corresponding to the two set measurement points is calculated to be the actual difference. At this time, the pitch angle information between the lens mounting plane and the reference plane is obtained. At the same time, based on the coordinate information of the center coordinates and the coordinate information of the two set measurement points in the set measurement point group corresponding to the reference plane, the distance between the two set measurement points on the reference plane is obtained. At this time, the target difference of the distance between the lens mounting plane and the reference plane at the two set measurement points can be obtained through the pitch angle information. Then, the adjustment parameters of the lens can be calculated through the obtained target difference and the actual difference. The adjustment parameters serve as a basis for controlling the activity of the first picking part 11 to adjust the first picking part 11, and then adjust the posture of the lens picked up by the first picking part 11, so that the actual difference is close to the target difference, that is, the pitch information of the lens is close to the pitch angle information of the lens mounting plane, so that they match, so as to ensure the accuracy of the subsequent installation of the lens on the lens mounting plane. It should be noted that when adjusting the pitch angle of the lens using the above method, the curved surface of the lens is actually regarded as a plane for operation. Since the actual curvature of the curved surfaces on both sides of the lens is small, the deviation of the final adjustment result is small, which meets the installation accuracy requirements of the lens.

[0074] Specifically, the reference plane is the structural installation reference plane of the lens assembly equipment 100, that is, the detection directions of the two-dimensional position detection device 2 and the distance detection device 3 are both perpendicular to the reference plane. Specifically, in this embodiment, the reference plane is a horizontal reference plane, and the reference plane does not limit the specific height position. On this basis, the set reference plane is a reference plane that is given a height position attribute on the basis of the reference plane, that is, the set reference plane is a reference plane located at the measuring end of the distance detection device 3, so as to meet the subsequent height measurement and comparison reference requirements.

[0075] It can be understood that the actual positions of the two set measurement points in the set measurement point group relative to the reference circle center may not be limited, and are mainly used to calculate the distance between the two set measurement points on the reference plane, so as to calculate and obtain the target difference of the distance of the lens from the set reference plane at the two set measurement points corresponding to the set measurement points based on the pitch angle information. However, the first picking part 11 has rotational freedom in the transverse axis and the longitudinal axis. If the two set measurement points are set on both sides of the reference circle center in the transverse or longitudinal direction, then after obtaining the target difference and the actual difference corresponding to the two set measurement points in a set measurement point group, the adjustment parameter of the lens obtained is only the rotation adjustment value of the first picking part 11 in the transverse axis or only the rotation adjustment value of the first picking part 11 in the longitudinal axis, which is convenient for calculating and obtaining the adjustment parameters of the lens to simplify the calculation process. Therefore, in this embodiment, the multiple set measurement point groups include two set measurement point groups, the two set measurement points in one set measurement point group are located on both sides of the reference circle center in the horizontal direction, and the two set measurement points in the other set measurement point group are located on both sides of the reference circle center in the vertical direction.

[0076] In addition, on the one hand, the actual picking up of the lens by the first picking portion 11 is not necessarily centered, that is, the projection of the rotation axis of the first picking portion 11 in the transverse axis or the longitudinal axis on the reference plane may be offset from the position of the center of the lens on the reference plane; on the other hand, there may be an adjustment error value when adjusting the lens; on the other hand, based on the above-mentioned data calculation based on the curved surface of the lens as a plane, the error value caused by it may cause error accumulation after step S700, resulting in the lens not being adjusted into place, that is, not meeting the lens installation error. In this case, the present application proposes to further include the following steps after step S700:

[0077] S710: Obtaining the center coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device 2 again;

[0078] S720: again obtaining the distances between the lens and the set measurement points in the set measurement point group on the set reference plane measured by the distance detection device 3, and calculating and obtaining the actual difference between the distances between two of the set measurement points and the lens;

[0079] S730: Compare the target difference with the actual difference;

[0080] S740: When the difference between the two is greater than a preset value, obtaining the adjustment parameter of the lens, and controlling the first picking part 11 to move again to adjust the posture of the lens;

[0081] S750: When the difference between the two is less than or equal to the preset value, the adjustment is completed.

[0082] That is, after completing the lens adjustment step, the center of the lens is obtained again, and the corresponding set measurement point group is obtained, so as to recalculate the actual difference in the distance between the lens and the set reference plane corresponding to the two set measurement points in the set measurement point group. Since the positions of the two set measurement points in the set measurement point group relative to the reference center have not changed, the target difference remains unchanged. At this time, the re-acquired actual difference is compared with the target difference. If the difference value meets the lens installation error, the adjustment of the lens is completed. If the difference value exceeds the lens installation error, the adjustment parameter of the lens is obtained based on the actual difference and the target difference to control the first picking part 11 to adjust the posture of the lens again. After that, the above steps can be repeated to detect the adjustment of the lens. The number of repeated rounds is not limited until the lens is adjusted into place. In fact, the installation error value of the lens can generally be met through two adjustments to complete the adjustment of the lens.

[0083] Specifically, the distance detection device 3 includes a spectral confocal sensor. On the one hand, the spectral confocal sensor has high precision. On the other hand, the spectral confocal sensor can identify the end face on the high-transmittance lens, and can normally and accurately obtain relevant information of the high-transmittance lens to meet functional requirements.

[0084] In addition, it is understandable that the center coordinates of the lens can be obtained by obtaining the contour of the lens by physical edge inspection, and then calculating the center coordinates of the lens based on the contour information. However, this method may cause the lens to move on the first picking portion 11, thereby generating a large error. Therefore, in this embodiment, the two-dimensional position detection device 2 is configured as a two-dimensional visual detection device. Therefore, step S100 includes:

[0085] S110: After the first picking unit 11 picks up the lens, the two-dimensional position detection device 2 acquires a planar image of the lens on a reference plane;

[0086] S120: Calculating the center coordinates of the lens on the reference plane according to the plane image.

[0087] That is, the plane image of the lens on the reference plane is directly obtained by the two-dimensional position detection device 2, and the center coordinates of the lens on the reference plane are calculated based on the plane image, thereby avoiding the above-mentioned error problem and improving accuracy.

[0088] Based on the step of obtaining the pitch angle information between the lens mounting plane and the reference plane, the lens mounting plane can be a plane parallel to the reference plane after prior adjustment, or it can be an unadjusted plane. In both cases, the lens can be adjusted in posture with the lens mounting plane as a reference in subsequent steps to ensure that the lens is mounted in alignment with the lens mounting plane. The specific information of the lens mounting plane can be obtained by obtaining information pre-stored by the system or by real-time detection, and generally, the information is obtained by real-time detection to avoid errors. Based on this, the lens assembly device 100 in this embodiment also includes a second pickup unit 4 and a three-dimensional image detection device 5 provided corresponding to the second pickup unit 4; correspondingly, step S400 includes:

[0089] S410: After the second picking unit 4 picks up the lens mounting base, controlling the three-dimensional image detection device 5 to obtain a three-dimensional image of the lens mounting base;

[0090] S420: Obtaining pitch angle information between a lens mounting plane on a lens mounting base and a reference plane by calculation according to the stereoscopic image.

[0091] Because the lens mounting base is not a transparent structure, the three-dimensional stereoscopic image of the lens mounting base can be directly obtained through the three-dimensional image detection device 5. This method is simple to operate and has high precision, so as to obtain various information of the lens mounting base, including the pitch angle information between the lens mounting plane on the lens mounting base and the reference plane. The pitch angle information is simply the angle between the lens mounting plane and the reference plane and the direction of the angle, which is used as a reference for subsequent adjustment of the lens posture.

[0092] In addition, the above steps only describe adjusting the angle posture of the lens to adapt to the lens mounting plane. In the actual installation process, the adjusted lens needs to be moved to the mounting point of the lens mounting base and fixed with glue to complete the installation of the lens. To this end, in this embodiment, the first picking-up portion 11 is configured to have horizontal, vertical, and vertical freedom of movement to directly move the lens to the mounting point. Compared with setting up other transfer devices to transfer the lens, the lens is directly transferred by the first picking-up portion 11, which reduces the transfer steps of the lens to avoid errors during the transfer process. Correspondingly, after step S700, the following steps are also included:

[0093] S760: Obtaining relative position information between the mounting point of the lens mounting base and the lens;

[0094] S770: Control the first picking portion 11 to move according to the relative position information to place the lens at the mounting point of the lens mounting base.

[0095] Based on the fact that the first picking-up part 11 can directly move the lens, after completing the angle posture adjustment of the lens, the relative position information of the mounting point of the lens mounting base and the lens is directly obtained, and according to the relative position information, the first picking-up part 11 is controlled to move the lens to the mounting point of the mounting base to complete the pairing of the lens and the lens mounting base, and then after completing the lens dispensing process, the installation of the lens is completed.

[0096] It is understood that the relative position information between the mounting point and the lens includes two-dimensional position information corresponding to the reference plane and near and far distance position information relative to the set reference plane. With respect to the two-dimensional position information corresponding to the reference plane, in this embodiment, step S760 includes:

[0097] S761: Control the two-dimensional position detection device 2 to obtain a planar image of the relative position between the lens mounting base and the lens;

[0098] S762: Calculate and obtain the plane relative position information between the mounting point of the lens mounting base and the center of the lens based on the relative position plane image.

[0099] That is, the two-dimensional position detection device 2 is used to obtain a plane image of the relative position between the lens mounting base and the lens, so as to use the plane image information to obtain the plane relative position information of the mounting point of the lens mounting base and the center of the lens.

[0100] Regarding the near and far distance position information relative to the reference plane, the lens assembly device 100 further includes a second pickup portion 4 and a three-dimensional image detection device 5 provided corresponding to the second pickup portion 4. It should be noted that the detection end of the three-dimensional image detection device 5 is preferably located on the set reference plane. In this embodiment, the obtaining step S760 includes:

[0101] S763: When the second pickup unit 4 picks up the lens mounting base, controlling the three-dimensional camera device to obtain a stereoscopic image of the lens mounting base, and obtaining a first matching distance between the mounting point of the lens mounting base and the set reference plane based on the stereoscopic image;

[0102] S764: Control the distance detection device 3 to detect the distance between the lens and the set reference plane at the center coordinate, and obtain the preset lens thickness to calculate the second fitting distance between the center of the lens and the set reference plane;

[0103] S765: Calculate and obtain relative position information between the mounting point of the lens mounting base and the center of the lens based on the first fitting distance and the second fitting distance.

[0104] That is, the three-dimensional image detection device 5 is used to obtain the first fitting distance between the mounting point on the lens mounting base and the set reference plane, and then the distance detection device 3 is used to obtain the distance between the center coordinate of the lens and the set reference plane. The distance measured at this time is the distance between the end face of the lens and the set reference plane. When the lens is installed, its center should correspond to the mounting point, so it is also necessary to obtain the preset lens thickness to calculate the second fitting distance between the center of the lens and the set reference plane. Then, based on the first fitting distance and the second fitting distance, the distance position information of the mounting point on the lens mounting base and the center of the lens relative to the set reference plane is calculated, that is, the horizontal height position information in this embodiment.

[0105] See also Figures 8 and 9The present application further proposes a lens assembly device 100, wherein the lens assembly device 100 includes a first pickup portion 11, a two-dimensional position detection device 2, a distance detection device 3, and a control device 6. The first pickup portion 11 has rotational freedom in the transverse and longitudinal axes for picking up lenses; the two-dimensional position detection device 2 is arranged corresponding to the first pickup portion 11; the distance detection device 3 is arranged corresponding to the first pickup portion 11; the control device 6 is electrically connected to the first pickup portion 11, the two-dimensional position detection device 2, and the distance detection device 3. To implement the control method of the lens assembly device 100 as described above, please refer to Figure 8 , the control device 6 includes: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may optionally include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001.

[0106] Those skilled in the art will understand that Figure 8 The structure of the control device 6 shown in the figure does not constitute a limitation on the control device 6, and the control device 6 may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0107] like Figure 8 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a control program of the lens assembly device 100 .

[0108] exist Figure 8 In the control device 6 shown, the processor 1001 calls the control program of the lens assembly device 100 stored in the memory 1005 and executes the lens assembly method.

[0109] In addition, the lens assembly device 100 further includes a second pickup portion 4 and a three-dimensional image detection device 5 disposed corresponding to the second pickup portion 4. The second pickup portion 4 is used to pick up the lens mounting base, and the three-dimensional image detection device 5 is primarily used to obtain spatial three-dimensional information of the lens mounting base, so as to at least obtain pitch angle information between the lens mounting plane on the lens mounting base and the reference plane, as well as the distance between the lens mounting point on the lens mounting base and the set reference plane, so as to meet the requirements of the lens assembly method described above.

[0110] Furthermore, the first pickup portion 11 has the freedom of movement in the lateral, longitudinal, and vertical directions. The first pickup portion 11 is mounted on a movable base, which is formed by stacking at least a lateral pitch adjustment base, a longitudinal pitch adjustment base, a lateral movement base, a longitudinal movement base, and a lifting base. This allows the first pickup portion 11 to have the freedom of movement in the lateral, longitudinal, and vertical directions, as well as the freedom of rotation in the lateral and longitudinal axes, thereby meeting the functional requirements of the lens assembly apparatus 100.

[0111] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A lens assembly method, based on a lens assembly device, for assembling a lens with a double-sided curved surface onto a mounting base, characterized in that: The lens assembly device includes an adjustment device, a two-dimensional position detection device, and a distance detection device, wherein the adjustment device has a first picking portion, and the first picking portion has a degree of freedom of rotation in a transverse axial direction and a longitudinal axial direction so as to be able to pick up the lens and adjust the position of the lens. The lens assembly method includes the following steps: After the first picking unit picks up the lens, obtaining the center coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device; Obtaining distances between the lens and set measurement points in a plurality of set measurement point groups on a set reference plane measured by the distance detection device, wherein the set reference plane is parallel to the base plane, the set reference plane has a reference circle center corresponding to the circle center of the lens, and each set measurement point group includes two set measurement points that are equidistant from the reference circle center; Calculating actual differences in the distances between the lens and two set measurement points in a set set measurement point group on a set reference plane measured by the distance detection device; Obtaining pitch angle information between the lens mounting plane and the reference plane; Calculating and obtaining a target difference in distance between the two set measurement points in each set measurement point group and the lens based on the pitch angle information, the coordinate information of the circle center coordinates, and the coordinate information of the two set measurement points in each set measurement point group corresponding to the reference plane; Obtaining adjustment parameters of the lens according to the actual difference and the target difference; According to the adjustment parameter, controlling the first picking portion to move so as to adjust the posture of the lens; Wherein, the reference plane is a horizontal reference plane.

2. The lens assembly method according to claim 1, wherein: The multiple set measurement point groups include two set measurement point groups, the two set measurement points in one set measurement point group are located on both sides of the reference circle center in the horizontal direction, and the two set measurement points in the other set measurement point group are located on both sides of the reference circle center in the vertical direction.

3. The lens assembly method according to claim 1, wherein: After the step of controlling the movement of the pickup portion according to the adjustment parameters to adjust the posture of the lens, the method further includes the following steps: again obtaining the coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device; again obtaining the distances between the lens and the set measurement points in the set measurement point group on the set reference plane measured by the distance detection device, and calculating and obtaining actual differences in the distances between two of the set measurement points and the lens; comparing the target difference with the actual difference; When the difference between the two is greater than a preset value, obtaining the adjustment parameter of the lens, and controlling the first picking part to move again to adjust the posture of the lens; When the difference between the two is less than or equal to the preset value, the adjustment is completed.

4. The lens assembly method according to any one of claims 1 to 3, wherein: The distance detection device includes a spectral confocal sensor.

5. The lens assembly method according to any one of claims 1 to 3, wherein: After the first picking unit picks up the lens, the step of obtaining the center coordinates of the center of the lens on the reference plane measured by the two-dimensional position detection device includes: After the first picking unit picks up the lens, a planar image of the lens on the reference plane is acquired by the two-dimensional position detection device; The coordinates of the center of the lens on the reference plane are calculated based on the plane image.

6. The lens assembly method according to any one of claims 1 to 3, wherein: The lens assembly device further includes a second pickup portion and a three-dimensional image detection device arranged corresponding to the second pickup portion; The step of obtaining pitch angle information between the lens mounting plane and the reference plane comprises: After the second pickup unit picks up the lens mounting base, controlling the three-dimensional image detection device to obtain a three-dimensional image of the lens mounting base; The pitch angle information between the lens mounting plane on the lens mounting base and the reference plane is obtained by calculation according to the stereoscopic image.

7. The lens assembly method according to any one of claims 1 to 3, wherein: The first picking portion also has horizontal, vertical and vertical freedom of movement; After the step of controlling the movement of the pickup portion according to the adjustment parameter to adjust the posture of the lens, the method further includes the following steps: Obtaining the relative position information between the mounting point of the lens mounting base and the lens; According to the relative position information, the first picking portion is controlled to move so as to place the lens at a mounting point of the lens mounting base.

8. The lens assembly method according to claim 7, wherein: The step of obtaining the relative position information between the mounting point of the lens mounting base and the lens includes: Controlling the two-dimensional position detection device to obtain a planar image of the relative position of the lens mounting base and the lens; The plane relative position information of the mounting point of the lens mounting base and the center of the lens is calculated and obtained based on the relative position plane image.

9. The lens assembly method according to claim 7, wherein: The lens assembly device further includes a second pickup portion and a three-dimensional image detection device arranged corresponding to the second pickup portion; The step of obtaining the relative position information between the mounting point of the lens mounting base and the lens includes: When the second pickup unit picks up the lens mounting base, controlling the three-dimensional image detection device to obtain a stereoscopic image of the lens mounting base, and obtaining a first matching distance between the mounting point of the lens mounting base and the set reference plane based on the stereoscopic image; Controlling the distance detection device to detect the distance between the lens and the set reference plane at the center coordinates of the circle, and obtaining a preset lens thickness to calculate a second fitting distance between the center of the lens and the set reference plane; The relative position information between the mounting point of the lens mounting base and the center of the lens is calculated based on the first fitting distance and the second fitting distance.

10. A lens assembly device, characterized in that: include: The first picking portion has a rotational freedom in a transverse axis and a longitudinal axis for picking up a lens; a two-dimensional position detection device, provided corresponding to the first picking portion; a distance detection device, provided corresponding to the first pickup portion; and A control device is electrically connected to the first pickup portion, the two-dimensional position detection device, and the distance detection device. The control device includes a memory, a processor, and a control program for the lens assembly device stored in the memory and executable on the processor. The control program for the lens assembly device is configured to implement the steps of the lens assembly method according to any one of claims 1 to 9.

11. The lens assembly equipment according to claim 10, wherein: The lens assembly equipment further includes a second pickup portion and a three-dimensional image detection device arranged corresponding to the second pickup portion.

12. The lens assembly equipment according to claim 10, wherein: The first picking portion has freedom of movement in lateral, longitudinal, and up and down directions.

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