A lens module EOL detection device and method

Abstract

The present application relates to the technical field of lens module detection, in particular to a lens module EOL detection device and method, comprising: a four-station turntable mechanism, a plurality of bearing test seats are arranged on the four-station turntable mechanism to place the lens module after code scanning is completed; a plurality of function modules are arranged around the four-station turntable mechanism, the function modules include a surface light test module for optical test, a white field detection assembly, a collimator test module and a black field test assembly. The present application can synchronously complete the electrical test, definition, color, signal-to-noise ratio, FOV field of view, COD center offset, white balance, dark angle, spot and black field and other performance detection of the lens module by integrating multi-station automatic detection process, the detection items are covered comprehensively, compared with the traditional device which only performs white field or black field detection.

Description

TECHNICAL FIELD

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

[0002] In the production process of the lens module, the internal parameter calibration and the EOL (End of Line) detection are two key and complementary quality control links. Although the internal parameter calibration has calibrated the imaging parameters of the lens, the EOL detection is still indispensable. The EOL detection verifies the robustness of the lens module under non-ideal conditions by simulating real use scenarios, and ensures that it can still work stably in the hands of users.

[0003] The existing detection method for the lens module only performs white field or black field detection on the camera module. For example, a kind of camera module final inspection method disclosed in publication No. CN115767083A includes the following steps: S1, placing the camera module product on the loading fixture; S2, fixing and electrifying the camera module product through the loading fixture; S3, the loading fixture moves, and the camera module product moves with the loading fixture until the lens of the camera module product faces the white field test equipment; S4, the white field test equipment provides light sufficient to cover the lens of the camera module product; S5, the camera module product takes a photo, if there are black spots or black blocks on the photo, there is dirt inside the camera module product, and if there are no black spots or black blocks on the photo, the camera module product is a qualified product. However, this scheme cannot comprehensively reflect the quality of the lens module.

[0004] Publication No. CN117528064A discloses a camera module final inspection device, method, apparatus and storage medium, which includes a main support, a turntable, a white field detection module, a magnification lens module and a black field detection module; the main support is provided with a first test card, a second test card and a light pipe sliding rail; the first test card is located at the top end of the main support, and the light pipe sliding rail is located below the first test card; the light pipe sliding rail is provided with a parallel light pipe which can slide along the light pipe sliding rail; the turntable is arranged below the main support, and the turntable is provided with a mounting position of the camera module; the white field detection module, the magnification lens support and the black field detection module are arranged in sequence outside the turntable; the magnification lens module includes a magnification lens support and a magnification lens. However, the four functional modules of this scheme are separately arranged, and the structure is complex.

[0005] In summary, there is an urgent need to design a lens module EOL detection device and method to solve the problem that the existing EOL detection device for the lens module only performs white field or black field detection on the camera module, the detection items are single, and the actual quality problems of the lens module cannot be comprehensively reflected. SUMMARY

[0006] Therefore, the present application aims to provide a lens module EOL detection device and method, which solves the problem that the existing EOL detection device for lens module only detects the white field or black field of the camera module, the detection item is single, and the actual quality problem of the lens module cannot be comprehensively reflected.

[0007] The technical scheme of the present application is implemented as follows:

[0008] An object of the present application is to disclose a lens module EOL detection device, comprising:

[0009] A four-station turntable mechanism for transferring lens modules is provided with a plurality of bearing test seats to place the lens modules after code scanning is completed;

[0010] A plurality of functional modules are arranged around the four-station turntable mechanism, and the functional modules include a surface light testing module for optical testing, a white field detection assembly, a collimator testing module, and a black field testing assembly;

[0011] The collimator testing module and the black field testing assembly are connected to the lens module at the same station of the four-station turntable mechanism to sequentially complete collimator testing and black field testing at the station.

[0012] Further, the device further comprises a cutting assembly, which is connected to the lens module at the same station of the four-station turntable mechanism as the white field detection assembly to cut out qualified products by the cutting assembly at the station.

[0013] Further, the device further comprises a Y-axis material bin mechanism and a feeding and discharging manipulator, the feeding and discharging manipulator is connected to the four-station turntable mechanism at the first station, and the Y-axis material bin mechanism is connected to the feeding and discharging manipulator to provide lens modules to be tested.

[0014] Further, a plurality of buffer seats are further arranged on the four-station turntable mechanism, the buffer seats are arranged one by one corresponding to the bearing test seats, and are used for temporarily storing lens modules that pass the detection, so as to flow with new lens modules to be tested.

[0015] Further, the surface light testing module comprises a liftable picture card lifting mechanism, a relay lens module, and a picture card, the relay lens module is fixedly arranged directly below the picture card lifting mechanism, the picture card is installed on the picture card lifting mechanism and located above the relay lens module;

[0016] The picture card lifting mechanism is used for driving the picture card to move in the Z-axis direction to adjust the relative position between the picture card and the relay lens;

[0017] The relay lens module serves as an optical relay element, and is used for constructing a test light path, so that the lens module to be tested can clearly capture a test pattern on the chart through the relay lens, thereby completing the tests of sharpness, 0C, color gray scale, SNR and rotation.

[0018] Further, the white field detection assembly includes a Z-axis lifting cylinder and a white light infrared integrating sphere light source.

[0019] The driving end of the Z-axis lifting cylinder is connected with the white light infrared integrating sphere light source, and is used for driving the white light infrared integrating sphere light source to move in the Z-axis direction, so as to lower it to completely cover the lens module to be tested.

[0020] The white light infrared integrating sphere light source is used for providing uniform and stable white light illumination, so that the lens module to be tested can capture a standard white field image, thereby completing the tests of bright spots, dark spots, stains, white balance, dark corners and AWB.

[0021] Further, the collimator test module includes a liftable collimator mechanism, an inclined collimator and a plurality of FOV field of view test targets.

[0022] The collimator mechanism is used for driving the vertical collimator and the inclined collimator to move in the Z-axis direction, so as to ascend to the interface with the lens module to be tested.

[0023] The vertical collimator and the inclined collimator are used for providing a vertical parallel light beam and a parallel light beam at a specific angle, so that the lens module to be tested can capture a collimator image, thereby completing the tests of sharpness and COD.

[0024] The plurality of FOV field of view test targets are arranged around the collimator mechanism, and are used for completing the FOV test of the lens module to be tested.

[0025] Further, the black field test assembly includes a sliding table cylinder, a lifting cylinder and a light shield cover.

[0026] A light shield cover driving upright plate is arranged on the sliding block of the sliding table cylinder, and the sliding table cylinder is used for driving the light shield cover driving upright plate to move to the top of the lens module to be tested.

[0027] The lifting cylinder is fixed on the light shield cover driving upright plate, and its driving end is connected with the light shield cover. The lifting cylinder is used for driving the light shield cover to descend, so that the bottom thereof is tightly pressed against the test seat.

[0028] The light shield cover is used for creating a completely dark test environment, so that the lens module to be tested can capture a black field image without external light interference, thereby completing the tests of dark current, bad points and white spots.

[0029] A second object of the present application is to disclose a lens module EOL detection method using the lens module EOL detection device as described above, the method comprising the following steps:

[0030] S1. The lens module to be tested is conveyed to the lower side of the loading and unloading manipulator by the Y-axis magazine mechanism;

[0031] S2. The loading and unloading manipulator clamps the lens module to be tested and places it on the bearing test seat of the four-station turntable mechanism at the first station;

[0032] S3. The four-station turntable mechanism drives the lens module to sequentially flow to the second station, the third station and the fourth station, and respectively performs the face light test, the white field detection, the collimator test and the black field test;

[0033] S4. After all tests are completed, the four-station turntable mechanism returns to the first station, and the loading and unloading manipulator carries the unqualified products back to the specified position of the Y-axis magazine mechanism according to the test results.

[0034] A third object of the present application is to disclose a lens module EOL detection method using the lens module EOL detection device as described above, the method comprising the following steps:

[0035] T1. The cutting assembly of the previous process conveys the lens module to be tested to the lower side of the loading and unloading manipulator;

[0036] T2. The loading and unloading manipulator clamps the lens module to be tested and places it on the bearing test seat of the four-station turntable mechanism at the first station, while the qualified products detected in the previous cycle are moved from the bearing test seat to the buffer seat;

[0037] T3. The four-station turntable mechanism drives the lens module to be tested to sequentially flow to the second station, the third station and the fourth station, respectively, to perform the face light test, the white field detection, the collimator test and the black field test, and when the qualified products detected in the previous cycle on the buffer seat flow to the third station with the lens module to be tested, the cutting assembly clamps the qualified products on the buffer seat and conveys them to the next process device;

[0038] T4. The four-station turntable mechanism returns to the first station, the loading and unloading manipulator places the newly detected qualified products on the empty buffer seat, carries the unqualified products back to the specified position of the Y-axis magazine mechanism, and places the new lens module to be tested on the empty bearing test seat, entering the next detection cycle.

[0039] Compared with the prior art, the lens module EOL detection device and method of the present application has the following advantages:

[0040] 1. The present application can simultaneously complete multiple performance tests of lens modules, such as electrical test, sharpness, color, signal-to-noise ratio, FOV field of view, COD center offset, white balance, dark corner, spot and black field, through integrated multi-station automated detection process. The detection items are comprehensive, and compared with traditional devices that only perform white field or black field detection, the detection integrity is improved, and the evaluation ability of the overall quality of the lens module is significantly enhanced.

[0041] 2. The present application adopts a four-station turntable mechanism and a modular functional component to cooperatively layout, innovatively multiplexes the collimator test and the black field test in the same station, shares the third station for white field detection and cutting component, and improves the space utilization rate. At the same time, through the design of the liftable chart module, relay mirror and multi-angle adjustable collimator, it is suitable for multiple lens models with small and large field angles, and the device has strong versatility and short changeover debugging time.

[0042] 3. The present application realizes full automation operation from feeding, testing to qualified product circulation through linkage control of the automatic feeding and discharging manipulator, the code scanning and tracing system and the buffer cutting component, improves the detection rhythm, reduces manual intervention, reduces the labor cost of single detection, effectively guarantees the detection consistency and stability, and meets the industrial production demand of high productivity and high yield. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0044] Figure 1 is a top view of the detection equipment of the present application;

[0045] Figure 2 is a structural schematic view of the detection equipment of the present application;

[0046] Figure 3 is a structural schematic view of the Y-axis material bin mechanism of the present application;

[0047] Figure 4 is a structural schematic view of the feeding and discharging manipulator of the present application;

[0048] Figure 5 is a structural schematic view of the four-station turntable mechanism of the present application;

[0049] Figure 6 is a structural schematic view of the surface light test module of the present application;

[0050] Figure 7 is a structural schematic view of the assembly of the chart and the chart mounting plate of the present application;

[0051] Figure 8is a schematic view of a cutting assembly cooperating with a white field detection assembly according to the present application;

[0052] Figure 9 is a schematic view of an assembly structure of a collimator testing module according to the present application;

[0053] Figure 10 is a schematic view of a collimator mechanism according to the present application;

[0054] Figure 11 is a schematic view of a collimator support according to the present application;

[0055] Figure 12 is a schematic view of a black field testing assembly according to the present application.

[0056] Reference signs:

[0057] 1, bottom plate; 2, four-station rotary table mechanism; 21, rotary table; 22, servo motor; 23, bearing test seat; 231, XY axis precision adjustment table; 232, clamp; 233, test seat; 234, test box; 24, buffer seat; 3, Y axis material bin mechanism; 31, material bin; 32, tray Y axis carrying module; 33, tray; 34, NG tray; 35, material bin lifting mechanism; 351, material bin lead screw; 352, optical axis; 353, hanging plate; 354, supporting plate; 355, vertical rod; 356, guide sleeve; 357, position sensor; 358, protective cover; 36, bearing plate; 37, positioning pin; 4, feeding and discharging manipulator; 41, gantry; 42, linear motor; 43, synchronous belt electric sliding table; 44, clamping jaw assembly; 441, rotary motor; 442, clamping jaw cylinder; 5, surface light testing module; 51, chart lifting mechanism; 511, mounting seat; 512, connecting plate; 513, adapter plate; 514, top plate; 515, electric lead screw; 516, driven lead screw; 517, synchronous belt assembly; 518, scale; 519, chart mounting plate; 52, relay mirror module; 521, middle elevating block; 522, relay mirror mounting vertical plate; 523, L-shaped support plate; 524, relay mirror; 53, light shield plate; 54, chart; 541, first hinged seat; 542, second hinged seat; 543, nitrogen gas spring; 544, handle; 6, white field detection assembly; 61, Z-axis lifting cylinder; 62, white light infrared integrating sphere light source; 7, cutting assembly; 71, transfer X-axis linear motor; 72, transfer Z-axis linear motor; 73, parallel cylinder clamping jaw; 74, cutting X-axis synchronous belt electric sliding table; 75, cutting seat; 8, collimator testing module; 81, collimator mechanism; 811, mounting plate; 812, cross plate; 813, FOV field of view test target; 814, first scale line; 815, first pointer; 816, waist-shaped through hole; 817, cross plate XY axis precision adjustment table; 82, inclined collimator; 83, vertical collimator; 84, arc-shaped through hole; 85, collimator support; 851, track plate; 852, T-shaped limiting block; 853, arc-shaped track groove; 854, collimator support sliding block; 855, second scale line; 856, second pointer; 86, collimator lifting mechanism; 861, collimator mounting seat; 862, collimator optical axis; 863, collimator top plate; 864, collimator electric lead screw; 865, collimator synchronous belt assembly; 866, collimator connecting plate; 867, collimator driven lead screw; 868, tension pulley; 869, collimator scale; 9, black field testing assembly; 91, sliding table cylinder; 92, light shield cover driving vertical plate; 93, lifting cylinder; 94, light shield cover; 95, light shield sponge; 10, code scanning gun. DETAILED DESCRIPTION

[0058] In order to make the technical means and purposes of the present application easy to understand and achieve, the embodiments of the present application are described in detail below in combination with specific drawings.

[0059] It should be noted that all the terms indicating direction and position in the present application, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "top", "low", "transverse", "longitudinal", "center", etc., are only used to explain the relative position relationship, connection condition, etc. between components in a certain state, and are only for the convenience of describing the present application, and thus cannot be understood as a limitation on the present application. In addition, the description of "first", "second", etc. in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features.

[0060] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection; can be direct connection, or indirect connection through intermediate medium; can be internal communication of two elements. 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.

[0061] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] AWB (Automatic White Balance) refers to the camera module automatically adjusting its color settings to ensure that a white object appears white under different color temperatures of light. OC (usually refers to Color Cast) refers to the overall image presenting an undesirable single tone, such as a red or green tint. SNR (Signal-to-Noise Ratio) refers to the ratio of useful image information to the power of random interference. The higher the signal-to-noise ratio, the cleaner and more detailed the image; the lower the signal-to-noise ratio, the dirtier the image, full of snow-like noise. Rotation refers to the physical installation angle deviation between the optical axis of the lens module to be tested and its shell or circuit board. FOV (Field of View) refers to the angle of the spatial range that the camera can "see". It is usually expressed in terms of horizontal, vertical or diagonal angles. COD (Center of Distortion) usually refers to Principal Point Offset or Center Offset.

[0063] As shown in Figures 1 to 12 , the present application provides a lens module EOL detection device for comprehensive performance detection of the completed assembled lens module at the end of the production line to ensure its stable and reliable quality.

[0064] As shown in Figure 1 and Figure 2 , the lens module EOL detection device of the present embodiment mainly includes a base plate 1, a four-station turntable mechanism 2, a Y-axis warehouse mechanism 3, an upper and lower material manipulator 4, a face light test module 5, a white field detection assembly 6, a cutting assembly 7, a collimator test module 8 and a black field test assembly 9.

[0065] The base plate 1 serves as the supporting foundation of the device. The four-station turntable mechanism 2 is arranged at the center of the base plate 1, and its periphery is sequentially arranged with the Y-axis warehouse mechanism 3, the upper and lower material manipulator 4, the face light test module 5, the white field detection assembly 6, the cutting assembly 7, the collimator test module 8 and the black field test assembly 9. The Y-axis warehouse mechanism 3 is connected to the upper and lower material manipulator 4, and the upper and lower material manipulator 4 is connected to the four-station turntable mechanism 2 at the first station. The face light test module 5 is connected to the four-station turntable mechanism 2 at the second station. The white field detection assembly 6 and the cutting assembly 7 are both connected to the four-station turntable mechanism 2 at the third station. The collimator test module 8 and the black field test assembly 9 are both connected to the four-station turntable mechanism 2 at the fourth station.

[0066] The seven functional units of the Y-axis hopper mechanism 3, the feeding and discharging manipulator 4, the face light test module 5, the white field detection assembly 6, the cutting assembly 7, the collimator test module 8 and the black field test assembly 9 are arranged in a ring around the four-station turntable mechanism 2. The complete EOL detection process from automatic feeding and discharging, multi-functional optical detection to qualified product sorting and output is integrated in one device, realizing "one-stop" full inspection, ensuring the comprehensive quality of the products for shipment, and avoiding the problems of high cost, large occupation and low efficiency caused by the series connection of multiple devices. The white field detection assembly 6 and the cutting assembly 7 are shared in the third station, and the collimator test module 8 and the black field test assembly 9 are shared in the fourth station. Only four physical stations are used to complete six main functions, making the device structure extremely compact and the occupation area small, greatly improving the space utilization and the compactness of the device, reducing the total number of stations required by the four-station turntable mechanism 2, simplifying the driving and control system, and reducing the manufacturing cost.

[0067] The specific working process is as follows: when the device is used as a single machine, the operator manually loads the lens module to be tested into the tray 33 of the Y-axis hopper mechanism 3. The Y-axis hopper mechanism 3 conveys the tray 33 containing the lens module to the lower side of the feeding and discharging manipulator 4. The feeding and discharging manipulator 4 clamps the lens module from the tray 33 and conveys it to the carrying test seat 23 of the four-station turntable mechanism 2 at the first station. Then, the four-station turntable mechanism 2 is driven by the servo motor 22 to sequentially transfer the lens module to the second, third and fourth stations.

[0068] At the second station, the lens module is connected with the face light test module 5 to perform tests such as sharpness, 0C, color gray scale, SNR and rotation. The sharpness test at this station is for small field angle lenses. At the third station, the lens module is connected with the white field detection assembly 6 to perform tests such as bright and dark spots, stains, white balance, dark angle and AWB. At the fourth station, the lens module is first connected with the collimator test module 8 to perform tests such as sharpness, FOV and COD. The sharpness test at this station is for large field angle lenses. Then, the black field test assembly 9 is actuated to perform black field test on the same lens module. After all the tests are completed, the turntable 21 returns to the first station, and the feeding and discharging manipulator 4 puts the qualified products back into the tray 33 and the unqualified products into the NG tray 34 according to the test results.

[0069] When the device is combined with the up and down process into a line body, the cutting component 7 of the last process will deliver the lens module to be tested to the lower part of the up and down mechanical arm 4. The up and down mechanical arm 4 will clamp and place it on the bearing test seat 23 of the four-station turntable mechanism 2. The four-station turntable mechanism 2 is provided with four buffer seats 24. The four-station turntable mechanism 2 will sequentially dock with the face light test module 5 at the second station, with the white field detection component 6 at the third station, with the collimator test module 8 at the fourth station, and with the black field test component 9 at the fourth station. Then it will return to the first station, the up and down mechanical arm 4 will place the qualified products on the buffer seat 24, the unqualified products will be placed in the NG tray 34, and the new lens module to be tested will be placed on the empty bearing test seat 23 or the fourth-station turntable mechanism 2. The qualified products on the buffer seat 24 will flow with the turntable 21, and when they reach the third station, they will be clamped by the parallel cylinder clamping jaw 73 of the cutting component 7 and delivered to the next process device.

[0070] As shown in Figure 3 , the Y-axis bin mechanism 3 includes a bin 31 and a tray Y-axis carrying module 32. The bin 31 can accommodate multiple layers of trays 33, and the tray Y-axis carrying module 32 is connected to the bin 31 and used to take and place the trays 33 from the bin 31 and move the trays 33 in the Y direction.

[0071] The bin 31 is designed as a multi-layer structure and can stack and store multiple trays 33 containing lens modules to be tested, solving the problem of frequent manual feeding and providing material support for automatic detection. The bottom of the bin 31 is connected to a bin lifting mechanism 35, which can drive the entire bin 31 to lift in the Z-axis direction, so that a certain layer of trays 33 in the bin 31 can be connected to the tray Y-axis carrying module 32. The bin lifting mechanism 35 is composed of a bin lead screw 351, an optical shaft 352, a support plate 354, etc. The bottom of the bin 31 is connected to a hanging plate 353 through four optical shafts 352, forming a lifting unit with the bin 31. The bin lead screw 351 is rotatably arranged at the bottom of the bin 31 and the hanging plate 353, and moves up and down with the bin 31 and the hanging plate 353. The power source is arranged on the hanging plate 353 and connected to the bin lead screw 351 through a transmission structure to drive the bin lead screw 351 to rotate and lift the bin 31.

[0072] Preferably, the bin 31 is a box with openings on both sides along the Y-axis, and the two side walls along the X-axis direction are provided with a plurality of limiting strips to support the trays 33. Adjacent trays 33 are provided with gaps to facilitate the taking and placing of the trays 33.

[0073] The Y-axis material bin mechanism 3 constructs an efficient and stable automatic feeding system through the innovative multi-layer stacking design and precise lifting feeding mechanism, has stable structure, strong bearing capacity, greatly increases the material reserve of single feeding, significantly reduces the feeding frequency of the operator, completely replaces the traditional manual disc taking, disc placing and carrying physical labor, and realizes the full automation of the feeding link.

[0074] The bottom of the equipment base plate 1 is fixedly connected with a supporting plate 354 through four vertical rods 355. The material bin lead screw 351 and the light shaft 352 pass through the equipment base plate 1 and the supporting plate 354 and can move along the Z-axis direction. The screw sleeve of the material bin lead screw 351 is fixed at the bottom of the supporting plate 354. When the material bin lead screw 351 rotates, the relative displacement between the material bin lead screw 351 and the screw sleeve occurs along the Z-axis direction, so as to drive the material bin 31 and the material disc 33 to perform the lifting action, that is, the relative displacement between the material bin 31 and the equipment base plate 1 occurs along the Z-axis direction, so as to realize the lifting of the material bin 31. The light shaft 352 is further provided with a guide sleeve 356 fixed on the supporting plate 354, which can precisely guide the light shaft 352 and effectively limit the radial movement of the light shaft 352, so as to ensure that the material bin 31 can only move linearly along the Z-axis during the lifting process, prevent shaking and deflection, and greatly improve the stability and repeat positioning accuracy of the movement.

[0075] Preferably, the supporting plate 354 is provided with a avoiding part for avoiding the power device and the transmission device of the material bin lifting mechanism 35.

[0076] Preferably, gaps are arranged between the material bin lead screw 351 and the light shaft 352 and the base plate 1 and the supporting plate 354, so as to facilitate the movement of the material bin lead screw 351 and the light shaft 352.

[0077] The equipment base plate 1 is further provided with a position sensor 357 for positioning the lifting position of the material bin 31. The photoelectric sensor cooperates with the through hole on the material bin 31. When the photoelectric sensor is aligned with the corresponding through hole, the surface grain bin moves to the corresponding position. The equipment base plate 1 is further provided with a protective cover 358 for protecting the material bin 31.

[0078] The material disc Y-axis carrying module 32 is driven by a synchronous belt electric sliding table 43 structure. The bearing plate 36 on the sliding block is provided with a positioning pin 37. The bottom surface of the NG disc 34 and the material disc 33 is provided with a insertion hole matched with the positioning pin 37, so as to realize the precise positioning.

[0079] The Y-axis hopper mechanism 3 is composed of a stable support frame formed by a supporting plate 354 and a vertical rod 355 arranged at the bottom of the equipment base plate 1, the hopper lead screw 351 cooperates with the lead screw sleeve fixed at the bottom of the supporting plate 354 to drive the hopper 31 to move up and down along the Z-axis, the guide sleeve 356 cooperates with the guide shaft 352 to realize high-precision linear guidance, effectively prevent shaking and deflection, and ensure stable lifting and repeat positioning accuracy; the supporting plate 354 is provided with an avoiding part to accommodate the power and transmission device, the hopper lead screw 351 and the guide shaft 352 are provided with a gap between the base plate 1 and the supporting plate 354 to ensure smooth movement, and the position sensor 357 cooperates with the through hole of the hopper 31 to realize accurate detection and positioning of the lifting position, and the protective cover 358 improves safety; the tray Y-axis conveying module 32 is driven by the synchronous belt electric sliding table 43, the positioning pin 37 on the bearing plate 36 is inserted into the hole on the bottom surface of the tray 33 and the NG tray 34 to realize rapid and accurate positioning of the tray 33. The structure integrates high-precision transmission, stable guidance, accurate positioning and safety protection, ensuring the reliability and efficiency of the multi-layer tray 33 automatic feeding.

[0080] As shown in Figure 4 The feeding and discharging manipulator 4 includes a gantry 41, a linear motor 42 is installed on the gantry 41, a synchronous belt electric sliding table 43 is arranged on the driving block of the linear motor 42 and moves along a direction perpendicular to the driving direction of the linear motor 42, and two jaw assemblies 44 are installed on the driving block of the synchronous belt electric sliding table 43. The synchronous belt electric sliding table 43 and the two jaw assemblies 44 are arranged along the driving direction of the linear motor 42 to reduce the occupied space. Each jaw assembly 44 includes a rotary motor 441 and a jaw cylinder 442, and the rotary shaft of the rotary motor 441 is connected to the jaw cylinder 442. Before the lens module is conveyed to the four-station turntable mechanism 2 at the first station, the lens module passes through the code scanning gun 10 first, and at the position of the code scanning gun 10, the rotary motor 441 drives the jaw cylinder 442 to rotate together with the lens module, so that the label code on the lens module is aligned with the code scanning gun 10, and the code scanning gun 10 completes the reading and recording of the information of the lens module.

[0081] Preferably, the gantry 41 includes a gantry base, a gantry column and a gantry beam, the gantry column is connected to the base plate 1 through the gantry base, the two gantry columns are arranged in parallel, and the two ends of the gantry beam are connected to the ends of the two gantry columns away from the base plate 1. The connection mode can be one of screw connection, bolt connection, welding connection, adhesive connection and the like, or a combination of multiple connection modes.

[0082] The length of the gantry beam can be greater than the width between the two gantry columns, and the side wall of the linear motor 42 is connected to the gantry beam to expand the movement range of the linear motor 42.

[0083] The driving block of the synchronous belt electric sliding table 43 is preferably connected with the two jaw assembly 44 through the first and second connecting members, and the ends of the first and second connecting members are provided with protrusions for connecting the jaw assembly 44. The jaw assembly 44 further comprises a vacuum chuck for adsorbing the lens module to move to a specified position, and can also be other gripping structures.

[0084] The up-down feeding manipulator 4 is supported by a gantry structure, and the linear motor 42 is installed on the side surface of the cross beam with a length greater than the distance between the columns, thereby expanding the stroke range. The synchronous belt electric sliding table 43 is mounted on the driving block of the linear motor 42, and two jaw assemblies 44 are arranged side by side on the sliding table and arranged in the driving direction, thereby realizing compact structure and covering multiple stations. Each jaw assembly 44 is integrated with a rotary motor 441 and a jaw cylinder 442, and can adjust the posture of the lens module through rotation before moving the lens module to the first station, thereby ensuring that the label code is opposite to the code scanning gun 10 to complete automatic code reading and realize product information tracing. The jaw assembly 44 is reliably connected through the protrusions of the first and second connecting members, and can be optionally provided with a vacuum chuck and other gripping structures to adapt to different product requirements. The design realizes high-speed, high-precision and multifunctional automatic up-down feeding and code scanning integrated operation, thereby improving the efficiency and intelligent level.

[0085] As shown in Figure 5 The four-station rotary table mechanism 2 comprises a rotary table 21 and a servo motor 22, the servo motor 22 for driving the rotary table 21 to rotate is arranged at the bottom of the equipment base plate 1, and the rotary table 21 is uniformly provided with four bearing test seats 23. The lens module after code scanning is conveyed by the jaw cylinder 442 of the up-down feeding manipulator 4 to the bearing test seat 23 of the four-station rotary table mechanism 2 at the first station.

[0086] Preferably, the rotary table 21 comprises a body and a rotating frame, the rotating frame is arranged on the body, the body is a disc, the rotating frame is a cross structure, a circular connecting part is arranged at the middle part of the rotating frame, the four ends of the rotating frame are provided with mounting parts, the area of the circular connecting part is smaller than that of the body, and the circular connecting part is used for connecting a power source to rotate, the mounting parts are used for mounting the bearing test seat 23, and the middle part of the rotary table 21 is provided with a through hole.

[0087] Each bearing test seat 23 includes an XY axis precision adjustment table 231 fixed to the turntable 21, used to adjust the position of the clamp 232 during debugging, so that the lens flow track passes through the docking position of each station; the bearing test seat 23 also includes a clamp 232 fixed to the XY axis precision adjustment table 231, a test seat 233 fixed to the inner side of the clamp 232, and a test box 234 fixed to the body of the turntable 21. The lens module that has completed code scanning is placed on the test seat 233, and is then clamped and fixed by the clamp 232. The test box 234 integrates a control and test module, and is connected with the test seat 233 through power and signals. The test seat 233 is provided with a probe. After the lens module is placed in the test seat 233, the probe is in conduction with the test seat 233, so that current test, static current test, software and hardware version test, resolution test, internal parameter burning result test, and frame rate test are completed at the first station, definition test, OC test, color gray scale test, SNR test, and rotation test are completed at the second station, bright spot and dark spot test, stain test, white balance test, dark angle test, and AWB test are completed at the third station, definition test, FOV test, COD test, and black field test are completed at the fourth station. The methods of various tests can be realized by using existing technologies, and finally the electrical properties and function tests are realized. The four buffer seats 24 on the four-station turntable mechanism 2 are correspondingly arranged with the bearing test seats 23.

[0088] The four-station turntable mechanism 2 drives the cross-shaped rotating frame to drive the four bearing test seats 23 to rotate accurately and intermittently through the servo motor 22, so as to realize the orderly flow between stations. Each bearing test seat 23 integrates the XY axis precision adjustment table 231, which is convenient for accurately aligning the lens module and the test components of each station during debugging. The clamp 232 cooperates with the test seat 233 with a probe to realize the quick clamping and electrical conduction of the lens module. The test box 234 is internally provided with a control and test module, which supports the completion of electrical property tests such as current, version, and resolution at the first station, and the completion of full function tests such as definition, OC, color, SNR, rotation, white balance, dark angle, AWB, FOV, COD, and black field at subsequent stations. At the same time, each bearing test seat 23 is correspondingly provided with a buffer seat 24, which can temporarily store the tested qualified products before the rotation of the turntable 21, realizes the parallel operation of “testing” and “discharging”, significantly improves the equipment beat and production efficiency, and takes into account high integration, high precision, and high automation level.

[0089] As shown in Figure 6 The face light test module 5 includes a card lifting mechanism 51 and a relay mirror module 52, both of which are fixed on the equipment base plate 1. The relay mirror module 52 is located directly below the card lifting mechanism 51, so as to adjust the positions of the relay mirror 524 and the card 54 according to the parameters of the lens module, customer requirements, and the parameters of the relay mirror module 52.

[0090] The figure card lifting mechanism 51 comprises four mounting seats 511, three optical shafts 352, a figure card mounting plate 519, a figure card 54, a top plate 514, a motorized lead screw 515, a driven lead screw 516, a synchronous belt assembly 517 and a light shield 53. The four mounting seats 511 are fixed on the bottom plate 1 of the device, the four mounting seats 511 are divided into two groups, each group of mounting seats 511 is fixed together through a connecting plate 512, and the two groups of mounting seats 511 are fixed together through an adapter plate 513. The bottom of two optical shafts 352 is fixed on the mounting seat 511 respectively, and the bottom of the other optical shaft 352 is fixed on the adapter plate 513. The top of the three optical shafts 352 is fixed on the top plate 514, and the figure card mounting plate 519 can move up and down on the three optical shafts 352. One end of the motorized lead screw 515 is arranged on the connecting plate 512 of one group of mounting seats 511, the other end of the motorized lead screw 515 is arranged on the top plate 514, and the lead screw sleeve of the motorized lead screw 515 is fixed with the figure card mounting plate 519, so that the figure card mounting plate 519 and the figure card 54 can be driven together to move up and down along the optical shaft 352 by the motorized lead screw 515. The connecting plate 512 of the other group of mounting seats 511 is provided with the driven lead screw 516, the top end of the driven lead screw 516 is also arranged on the top plate 514, and the lead screw sleeve of the driven lead screw 516 is fixed with the figure card mounting plate 519, so that when the figure card mounting plate 519 and the figure card 54 move up and down along the optical shaft 352 driven by the motorized lead screw 515, the lead screw sleeve of the driven lead screw 516 moves synchronously, so that the whole driving structure is more stable and smooth. The synchronous belt assembly 517 is arranged on the top of the top plate 514, and the power is transmitted between the motorized lead screw 515 and the driven lead screw 516 through the synchronous belt assembly 517. The structure of the synchronous belt assembly 517 can drive at least one driven lead screw 516 to move through only one synchronous belt, which is simple and reliable, and the tension of the synchronous belt is maintained through multiple tensioning wheels. The connecting plate 512 and the top plate 514 are also provided with a scale 518, which is convenient for observing the position of the figure card mounting plate 519. The top of the light shield 53 is connected with the top plate 514, and the middle and lower part of the light shield 53 is connected with the adapter plate 513, so as to realize stable installation of the light shield 53. The light shield 53 is used to reduce the light interference between the area light test module 5 and the collimator test module 8, and improve the accuracy of the test.

[0091] Preferably, the adapter plate 513 is a V-shaped structure, and the two side walls are respectively screwed with the two connecting plates 512. By arranging the adapter plate 513, the adapter plate 513 can not only install the optical shaft 352, but also install the light shield 53. In the case of ensuring that the figure card mounting plate 519 can stably move up and down along the optical shaft 352, the number of optical shafts 352 is reduced from four to three, which reduces the cost.

[0092] The relay mirror module 52 comprises a middle elevating block 521, the middle elevating block 521 is provided with an XY axis precision adjustment table 231, the XY axis precision adjustment table 231 is provided with a relay mirror mounting vertical plate 522, the relay mirror mounting vertical plate 522 is provided with a Z axis precision adjustment table, the Z axis precision adjustment table is provided with an L-shaped support plate 523, and the L-shaped support plate 523 is provided with a relay mirror 524.

[0093] The face light test module 5 is integrated with the relay mirror module 52 through the integrated picture card lifting mechanism 51, and high-precision and multifunctional optical detection is realized. The picture card lifting mechanism 51 adopts a double-screw rod structure in which a driving screw rod 515 is driven and a driven screw rod 516 is synchronously connected through a synchronous belt assembly 517, and three optical axes 352 are guided to ensure the stability and high precision of the movement of the picture card 54 in the Z axis direction, and a scale 518 is combined to facilitate real-time observation of the position. The innovative V-shaped adapter plate 513 not only realizes the integrated installation of the optical axis 352 and the light shield plate 53, but also reduces the number of optical axes from four to three, thereby reducing the cost. The relay mirror module 52 realizes multi-dimensional fine adjustment of the relay mirror 524 through the XY axis and Z axis precision adjustment tables, thereby ensuring accurate alignment of the optical path. At the same time, the light shield plate 53 effectively isolates the light interference from the adjacent collimator test module 8. Through the precise mechanical structure and ingenious integrated layout, the design not only ensures the accuracy and repeatability of the tests of clarity, C, color gray scale, SNR and rotation, but also improves the universality and reliability of the equipment, thereby providing a solid foundation for comprehensive evaluation of the imaging quality of the lens module.

[0094] As shown in Figure 7 , the picture card mounting plate 519 is a plate body with a square hole, the picture card 54 is mounted at the square hole, one side of the picture card 54 is hinged to one side of the square hole through a hinge, the picture card mounting plate 519 is hinged to a nitrogen spring 543, the other end of the nitrogen spring 543 is hinged to the picture card 54, and then the angle of the picture card 54 can be adjusted through the nitrogen spring 543, so that more angle images of the picture card 54 are obtained, and calibration is more accurate. The working medium of the nitrogen spring 543 is gas, and compared with the adjusting rod such as the hydraulic rod with a liquid working medium, the nitrogen spring 543 has the advantages of no pollution.

[0095] The first hinge seat 541 is fixed on the chart mounting plate 519, the second hinge seat 542 is fixed on the chart 54, and the nitrogen spring 543 is hingedly connected to the first hinge seat 541 and the second hinge seat 542, respectively. The chart 54 has a closed state, in which the second hinge seat 542 is in contact with the chart mounting plate 519, and the hinged position of the nitrogen spring 543 with the first hinge seat 541 is higher than the hinged position of the nitrogen spring 543 with the second hinge seat 542, so that the chart 54 can be self-locked in the closed state, facilitating accurate adjustment of the working pressure of the nitrogen spring 543, and eliminating the need for an external limiting mechanism when adjusting the working pressure of the nitrogen spring 543. The chart 54 is also provided with a handle 544 to facilitate manual opening of the chart 54 from the self-locked state.

[0096] When the lens module flows to the second station, it is directly below the relay lens module 52, and the lens module captures the image of the chart 54 through the relay lens 524. The control and test module in the test box 234 analyzes the obtained image to complete the clarity test (small field angle lens module test), OC test, color gray scale test, SNR test and rotation test. The specific test method can be realized by using the existing technology.

[0097] By providing a hinge structure with a square hole on the chart mounting plate 519 and connecting the first hinge seat 541 and the second hinge seat 542 with the nitrogen spring 543, flexible adjustment and reliable self-locking of the angle of the chart 54 are achieved. When the chart 54 is closed, the hinged points of the nitrogen spring 543 form a high position constraint, and under the action of gas pressure, natural self-locking is achieved, eliminating the need for an additional limiting mechanism to stably maintain the closed state and facilitating accurate adjustment of the working pressure. The design of the handle 544 facilitates manual opening. The structure utilizes the characteristics of the nitrogen spring, such as no pollution and long service life, not only supports multi-angle expansion of the chart 54 to meet different calibration needs and improve test accuracy, but also takes into account the convenience of operation and the reliability of maintenance, effectively ensuring the flexibility and stability of key optical parameter tests such as clarity, OC, color gray scale, SNR and rotation.

[0098] As shown in Figure 8 The cutting assembly 7 includes a transfer X-axis linear motor 71, a transfer Z-axis linear motor 72 is arranged on the driving block of the transfer X-axis linear motor 71, and a parallel pneumatic cylinder clamp jaw 73 is arranged on the driving block of the transfer Z-axis linear motor 72. A cutting X-axis synchronous belt electric sliding table 74 is arranged on one side of the transfer X-axis linear motor 71, a cutting seat 75 is arranged on the sliding block of the cutting X-axis synchronous belt electric sliding table 74, and the parallel pneumatic cylinder clamp jaw 73 is used to clamp the lens module that has completed detection from the buffer seat 24 to the cutting seat 75, and then cut the lens module to the machine table of the next process.

[0099] The white field detection assembly 6 is arranged on the side of the cutting material X-axis synchronous belt electric sliding table 74 away from the cutting material assembly 7, and the white field detection assembly 6 comprises a Z-axis lifting cylinder 61, and a white light infrared integrating sphere light source 62 is arranged on the driving plate of the Z-axis lifting cylinder 61. The lens module that completes the test at the second station is transferred to the position directly below the white light infrared integrating sphere light source 62, the Z-axis lifting cylinder 61 drives the white light infrared integrating sphere light source 62 to descend to cover the lens module, the lens module shoots a white light image, and the control and test module in the test box 234 analyzes the obtained image, so that the bright spot and dark spot test, the stain test, the white balance test, the dark corner test and the AWB test are completed. The specific test method can be realized by using the prior art.

[0100] By sharing the third station by the cutting material assembly 7 and the white field detection assembly 6, the functional integration and the efficient use of space are realized. The transfer X-axis linear motor 71 and the transfer Z-axis linear motor 72 constitute a high-precision two-dimensional moving platform, the parallel cylinder clamp jaw 73 drives the qualified product on the buffer seat 24 to be accurately clamped and placed on the cutting material seat 75, and the automatic transfer to the next process is completed. At the same time, the layout of the cutting material X-axis synchronous belt electric sliding table 74 provides installation space for the white field detection assembly 6, and the two work cooperatively. The white field detection assembly 6 drives the white light infrared integrating sphere light source 62 to descend and cover the lens module by the Z-axis lifting cylinder 61, forms a uniform and stable lighting environment, and ensures the accuracy and consistency of the test results of the bright spot / stain, white balance, dark corner and AWB. The design realizes the parallel preparation of “detection” and “delivery” through station reuse and compact structure, greatly improves the overall pace and automation level of the equipment.

[0101] As Figure 9As shown, the collimator test module 8 is provided with a collimator lifting mechanism 86, which includes four collimator mounting seats 861, four collimator optical axes 862, a collimator mechanism 81, a collimator top plate 863, a collimator electric screw rod 864, and a collimator synchronous belt assembly 865. The four collimator mounting seats 861 are fixed on the equipment base plate 1, the bottom of the four collimator optical axes 862 is fixed on the collimator mounting seat 861, the top of the four collimator optical axes 862 is fixed on the collimator top plate 863, the collimator mechanism 81 is located between the collimator top plate 863 and the collimator mounting seat 861, and the collimator mechanism 81 can move up and down on the four collimator optical axes 862. The four collimator mounting seats 861 are divided into two groups, and the two collimator mounting seats 861 in each group are fixed by a collimator connecting plate 866. One end of the collimator electric screw rod 864 is arranged on one of the collimator connecting plates 866, the other end of the collimator electric screw rod 864 is arranged on the collimator top plate 863, the screw rod sleeve of the collimator electric screw rod 864 is fixed with the collimator mechanism 81, so that the collimator mechanism 81 can be driven to move up and down along the collimator optical axis 862 by the collimator electric screw rod 864. The other collimator connecting plate 866 is provided with a collimator driven screw rod 867, the top end of the collimator driven screw rod 867 is also arranged on the collimator top plate 863, and the screw rod sleeve of the collimator driven screw rod 867 is fixed with the collimator mechanism 81, so that when the collimator mechanism 81 moves up and down along the collimator optical axis 862 driven by the collimator electric screw rod 864, the screw rod sleeve of the collimator driven screw rod 867 moves synchronously, making the whole driving structure more stable and smooth. The collimator synchronous belt assembly 865 is arranged on the top of the collimator top plate 863, and the power is transmitted between the collimator electric screw rod 864 and the collimator driven screw rod 867 through the collimator synchronous belt assembly 865. This collimator synchronous belt assembly 865 structure can drive at least one collimator driven screw rod 867 to move by only one synchronous belt, which is simple and reliable, and the tension of the synchronous belt is maintained by multiple tensioning wheels 868. The collimator mounting seat 861 and the collimator top plate 863 are also provided with a collimator scale 869, which is convenient for observing the position of the collimator mechanism 81.

[0102] The collimator testing module 8 drives the collimator mechanism 81 to move along the four collimator optical axes 862 in a high-precision and stable Z direction by setting a lifting mechanism driven by a collimator electric lead screw 864, a collimator driven lead screw 867 and a collimator synchronous belt assembly 865, and cooperates with a collimator scale 869 to monitor the position in real time, so that the height of the collimator is adjustable, thereby adapting to the testing requirements of lens module with different focal lengths or working distances; the double-screw synchronous driving structure ensures the stability and parallelism of the movement under a large load, avoids tilting and jamming, ensures the accuracy and repeatability of the measurement of optical parameters such as FOV and COD, and improves the universality and detection reliability of the equipment.

[0103] As shown in Figure 10 The collimator mechanism 81 includes a mounting plate 811 with a waist-shaped through hole 816, four arc-shaped through holes 84 concentric with the arc edges of the waist-shaped through hole 816 are formed on the mounting plate 811, a collimator support 85 is slidably arranged in the arc-shaped through hole 84, an inclined collimator 82 is arranged on the collimator support 85, so that the installation angle of the inclined collimator 82 can be adjusted in the horizontal plane. A horizontal plate 812 is arranged on the mounting plate 811 to span the waist-shaped through hole 816, a horizontal plate XY axis precision adjustment table 817 is arranged on the horizontal plate 812, a vertical collimator 83 is arranged on the horizontal plate XY axis precision adjustment table 817, and the horizontal plate XY axis precision adjustment table 817 is used to adjust the position of the vertical collimator 83 so that it is located directly above the lens module. A first scale line 814 is arranged on the mounting plate 811 along the arc-shaped through hole 84, and a first pointer 815 is arranged on the collimator support 85, so as to directly determine the installation angle of the collimator in the horizontal plane. A FOV field angle test target 813 with a scale line is arranged on the mounting plate 811 around the four arc-shaped through holes 84, which is used to detect the edge position of the image captured by the lens module, so as to detect the FOV field angle of the image captured by the lens module and the content of the FOV field angle test. The lens module captures the image composed of four inclined collimators 82 and one vertical collimator 83, completes the definition test of the lens module (this item is tested for a large field angle lens module), and completes the COD test.

[0104] The parallel light tube mechanism 81 is provided with four arc-shaped through holes 84 on the mounting plate 811 with a waist-shaped through hole 816, so that the parallel light tube support 85 can slide along the arc shape, thereby realizing the angle adjustment of the inclined parallel light tube 82 in the horizontal plane, and cooperating with the first pointer 815 and the first scale line 814 to realize the direct positioning of the angle; the XY axis precision adjustment table 817 on the horizontal plate 812 can fine-tune the position of the vertical parallel light tube 83, and ensure its accurate alignment with the lens module optical axis; the FOV field of view angle test target 813 integrated around can directly detect the image edge at the same station to calculate the field of view angle. This structure highly integrates the multi-angle inclined light tube, adjustable vertical light tube and FOV target, and can simultaneously complete the clarity, FOV and COD tests of the large field of view lens through only one shooting, realizes the integrated optical detection with multi-function, high precision and high efficiency, and significantly improves the integration and accuracy of the test.

[0105] As shown in Figure 11 , the parallel light tube support 85 includes a track plate 851, the track plate 851 is provided with a T-shaped limiting block 852, the T-shaped limiting block 852 is matched with the arc-shaped through hole 84 in Figure 10 , and the first pointer 815 is fixed on the T-shaped limiting block 852. The track plate 851 is provided with a vertical arc-shaped track groove 853, the arc-shaped track groove 853 is provided with a light tube support sliding block 854, and the inclined parallel light tube 82 is fixed on the light tube support sliding block 854 through a locking nut. The arc-shaped track groove 853 is provided with a second scale line 855, and the light tube support sliding block 854 is provided with a second pointer 856, so as to directly determine the installation angle of the inclined parallel light tube 82 in the vertical plane. The structure of the parallel light tube support 85 is convenient to install, and reliable to operate.

[0106] The parallel light tube support 85 realizes stable sliding and positioning of the horizontal angle through cooperation of the T-shaped limiting block 852 and the arc-shaped through hole 84, and realizes direct reading of the angle through the first pointer 815 and the first scale line 814; meanwhile, the vertical arc-shaped track groove 853 is arranged on the track plate 851, which cooperates with the light tube support sliding block 854 and the locking nut to adjust the inclination angle of the inclined parallel light tube 82 in the vertical plane, and the cooperation of the second pointer 856 and the second scale line 855 realizes direct reading of the angle. This structure integrates the angle adjustment functions in the horizontal and vertical directions in a compact module, which not only guarantees the flexibility and reliability of the multi-degree-of-freedom precision adjustment, but also improves the debugging efficiency and repeatability through the visual scale design, and ensures the high precision and stability of the COD and other optical parameter tests.

[0107] As shown in Figure 12As shown, the black field test assembly 9 includes a sliding table cylinder 91 fixed on the equipment base plate 1, a light shield driving vertical plate 92 is arranged on the sliding block of the sliding table cylinder 91, a lifting cylinder 93 is arranged on the light shield driving vertical plate 92, a light shield 94 is arranged on the driving plate of the lifting cylinder 93, and a light shielding sponge 95 is arranged on the bottom section of the light shield 94. After the collimator test module 8 completes the test on the lens module, the black field test assembly 9 performs black field test on the lens module. During the black field test, the sliding table cylinder 91 drives the light shield 94 to move to the top of the lens module, and then the lifting cylinder 93 drives the light shield 94 to descend, so that the light shielding sponge 95 is tightly attached to the section of the test seat 233, and the lens module is in a completely dark environment. The lens module captures an image of the dark environment, and the test box 234 analyzes whether there is a white spot or other color in the image captured in the dark environment.

[0108] The black field test assembly 9 drives the light shield 94 through the linkage of the sliding table cylinder 91 and the lifting cylinder 93, realizes the accurate action of horizontal movement and vertical pressing, and accurately positions the light shield 94 above the lens module. The light shielding sponge 95 arranged at the bottom is tightly attached to the section of the test seat 233 during the descending process, effectively blocks the leakage of external light, and creates a completely dark test environment for the lens module. The structure has reliable action and good sealing performance, ensures the authenticity of the image data in the black field test process, can accurately detect imaging defects such as dark current, bad point and white spot, and improves the reliability and accuracy of the detection.

[0109] A second object of the present application is to disclose a lens module EOL detection method using the lens module EOL detection device according to any one of the above.

[0110] S1. The tray 33 loaded with the lens module to be tested is conveyed to the lower side of the loading and unloading manipulator 4 through the Y-axis tray conveying mechanism 3; S2. The loading and unloading manipulator 4 clamps the lens module to be tested from the tray 33, and places it on the test seat 23 of the four-station turntable mechanism 2 at the first station; S3. The four-station turntable mechanism 2 drives the lens module to sequentially flow to the second station, the third station and the fourth station, and respectively performs face light test, white field test, collimator test and black field test; S4. After all the tests are completed, the four-station turntable mechanism 2 returns to the first station, and the loading and unloading manipulator 4 puts the qualified products back to the tray 33 according to the test results, and puts the unqualified products into the NG tray 34.

[0111] The lens module EOL detection method disclosed by the application utilizes the highly integrated detection device to realize a complete, efficient and reliable automatic detection process. The method is particularly suitable for independent operation, small batch production of multiple varieties or research and development verification stage. The Y-axis stock bin mechanism 3 automatically sends the whole tray of lens modules to be tested to the material taking position, and the loading and unloading manipulator 4 automatically completes all actions of material taking, loading, unloading and sorting, completely replacing the traditional manual loading, manual testing and manual sorting and other tedious and error-prone operations. Not only the labor cost is greatly reduced, but more importantly, the influence of human factors such as fatigue and negligence on the detection process is eliminated, ensuring that each product undergoes a completely consistent standardized process, greatly improving the reliability and repeatability of the detection result. The method completes the four key detections of face light testing, white field detection, parallel light tube testing and black field testing in a compact device through the orderly circulation of the four-station turntable mechanism 2. This “one-stop” detection mode ensures the comprehensive quality of the products leaving the factory and avoids the quality risks caused by missed detection.

[0112] The third object of the application is to disclose a lens module EOL detection method using the lens module EOL detection device of any one of the above. The method comprises the following steps:

[0113] T1. The cutting assembly of the previous process transmits the lens module to be tested to the lower side of the loading and unloading manipulator 4; T2. The loading and unloading manipulator 4 clamps the lens module to be tested and places it on the bearing test seat 23 of the four-station turntable mechanism 2 at the first station, while the qualified products detected in the previous cycle are moved from the bearing test seat 23 to the buffer seat 24; T3. The four-station turntable mechanism 2 drives the lens module to be tested to sequentially circulate to the second station, the third station and the fourth station, respectively, to perform face light testing, white field detection, parallel light tube testing and black field testing, and when the qualified products detected in the previous cycle on the buffer seat 24 circulate to the third station together with the lens module to be tested, the cutting assembly 7 clamps the qualified products on the buffer seat 24 and transmits them to the next process equipment; T4. The four-station turntable mechanism 2 returns to the first station, the loading and unloading manipulator 4 places the newly detected qualified products on the empty buffer seat 24, transports the unqualified products back to the designated position of the Y-axis stock bin mechanism 3, and places the new lens module to be tested on the empty bearing test seat 23, entering the next detection cycle.

[0114] The method discards the traditional material disc loading and unloading mode, and directly transmits the lens module to be tested by the cutting assembly of the previous process, and directly transmits the qualified products to the next process equipment by the cutting assembly 7 after detection, realizing online detection. The lens module continuously flows between the stations, eliminating the interruption of production rhythm caused by disc changing and waiting, greatly improving the smoothness and overall efficiency of the whole production line. The buffer seat 24 is used to realize parallel operation of detection and transmission, eliminating waiting time.

[0115] The above merely provides the preferred embodiment of the present application and not intended to limit the present application. Accordingly, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A lens module EOL detection device, characterized in that, The device comprises: a four-station rotary table mechanism (2) for lens module flow, wherein a plurality of bearing test seats (23) are arranged on the four-station rotary table mechanism (2) to place lens modules with completed code scanning; a plurality of functional modules arranged around the four-station rotary table mechanism (2), wherein the functional modules comprise a surface light test module (5) for optical test, a white field detection assembly (6), a collimator test module (8), and a black field test assembly (9); wherein the collimator test module (8) and the black field test assembly (9) are connected to the lens module at the same station of the four-station rotary table mechanism (2) to sequentially complete collimator test and black field test at the station; the surface light test module (5) comprises a liftable picture card lifting mechanism (51), a relay mirror module (52), and a picture card (54), wherein the relay mirror module (52) is fixedly arranged below the picture card lifting mechanism (51), and the picture card (54) is installed on the picture card lifting mechanism (51) and located above the relay mirror module (52); the picture card lifting mechanism (51) is used to drive the picture card (54) to move in the Z-axis direction to adjust the relative position between the picture card (54) and the relay mirror (524); the relay mirror module (52) is used as an optical relay element to construct a test light path, so that the lens module to be tested can clearly capture a test pattern on the picture card (54) through the relay mirror (524), thereby completing the test of clarity, 0C, color gray scale, SNR, and rotation.

2. The lens module EOL detection device according to claim 1, wherein, The device further comprises a cutting assembly (7) connected to the lens module at the same station of the four-station rotary table mechanism (2) as the white field detection assembly (6) to cut out qualified products at the station by the cutting assembly (7).

3. The lens module EOL detection device according to claim 1 or 2, characterized in that, The device further comprises a Y-axis material bin mechanism (3) and a feeding and discharging manipulator (4), wherein the feeding and discharging manipulator (4) is connected to the four-station rotary table mechanism (2) at the first station, and the Y-axis material bin mechanism (3) is connected to the feeding and discharging manipulator (4) to provide lens modules to be tested.

4. The lens module EOL detection device according to claim 3, wherein, A plurality of buffer seats (24) are further arranged on the four-station rotary table mechanism (2), wherein the buffer seats (24) are arranged one by one corresponding to the bearing test seats (23) to temporarily store lens modules that pass the test for the purpose of flowing with new lens modules to be tested.

5. The lens module EOL detection device according to claim 1, wherein, The white field detection assembly (6) comprises a Z-axis lifting cylinder (61) and a white light infrared integrating sphere light source (62); the driving end of the Z-axis lifting cylinder (61) is connected to the white light infrared integrating sphere light source (62) to drive the white light infrared integrating sphere light source (62) to move in the Z-axis direction so as to be lowered to completely cover the lens module to be tested; the white light infrared integrating sphere light source (62) is used to provide uniform and stable white light illumination, so that the lens module to be tested can capture a standard white field image, thereby completing the test of bright spots, dark spots, stains, white balance, dark corners, and AWB.

6. The lens module EOL detection apparatus according to claim 1, wherein The collimator test module (8) comprises a liftable collimator mechanism (81), a vertical collimator (83), an inclined collimator (82), and a plurality of FOV field angle test targets (813); The collimator mechanism (81) is used to drive the vertical collimator (83) and the inclined collimator (82) to move in the Z-axis direction, so as to be lifted to be docked with the lens module to be tested; The vertical collimator (83) and the inclined collimator (82) are used to provide a vertical collimated light beam and a collimated light beam at a specific angle, so that the lens module to be tested can shoot a collimator image, thereby completing the definition and COD test; A plurality of FOV field angle test targets (813) are arranged around the collimator mechanism (81), and are used to complete the FOV test of the lens module to be tested.

7. The lens module EOL detection device according to claim 1, wherein, The black field test assembly (9) comprises a sliding table cylinder (91), a lifting cylinder (93), and a light shield (94); The sliding table cylinder (91) is provided with a light shield driving stand (92) on the sliding block, and is used to drive the light shield driving stand (92) to move to the top of the lens module to be tested; The lifting cylinder (93) is fixed on the light shield driving stand (92), and the driving end is connected with the light shield (94), and is used to drive the light shield (94) to descend, so that the bottom is tightly closed with the bearing test seat (23); The light shield (94) is used to create a completely dark test environment, so that the lens module to be tested can shoot a black field image without external light interference, thereby completing the dark current, bad point and white spot test.

8. A lens module EOL detection method, characterized in that, The lens module EOL detection equipment according to any one of claims 3 to 7 is used, and the method comprises the following steps: S1. The lens module to be tested is conveyed to the lower side of the loading and unloading manipulator (4) through the Y-axis warehouse mechanism (3); S2. The loading and unloading manipulator (4) clamps the lens module to be tested, and places it on the bearing test seat (23) of the four-station turntable mechanism (2) at the first station; S3. The four-station turntable mechanism (2) drives the lens module to successively flow to the second station, the third station and the fourth station, and respectively performs surface light test, white field detection, collimator test and black field test; S4. After all tests are completed, the four-station turntable mechanism (2) returns to the first station, and the loading and unloading manipulator (4) carries the unqualified products back to the specified position of the Y-axis warehouse mechanism (3) according to the test results.

9. A method for detecting the end-of-life (EOL) of a lens module, characterized in that, The lens module EOL detection equipment according to claim 4 is used, and the method comprises the following steps: T1. The cutting assembly of the previous process conveys the lens module to be tested to the lower side of the loading and unloading manipulator (4); T2. The loading and unloading manipulator (4) clamps the lens module to be tested, and places it on the bearing test seat (23) of the four-station turntable mechanism (2) at the first station, while moving the qualified products detected in the previous period from the bearing test seat (23) to the buffer seat (24); T3. The four-station turntable mechanism (2) drives the to-be-tested lens module to sequentially flow to the second station, the third station, and the fourth station to perform face light testing, white field detection, collimator testing, and black field testing, respectively; when the qualified products on the buffer seat (24) from the previous detection cycle flow to the third station together with the to-be-tested lens module, the cutting assembly (7) clamps and takes the qualified products on the buffer seat (24) and conveys them to the next process equipment; T4. The four-station turntable mechanism (2) returns to the first station, the loading and unloading robot (4) places the newly completed qualified products on the emptied buffer seat (24), carries the unqualified products back to the designated position of the Y-axis magazine mechanism (3), and places the new to-be-tested lens module on the emptied load test seat (23) to enter the next detection cycle.

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