A method and device for incoming lens testing

Abstract

The present invention relates to the technical field of lens testing, and discloses a method and device for incoming lens testing, including the following steps: Step 1: Place the lens to be tested above the sensor chip; Step 2: Light up the sensor chip; Step 3: Adjust the position of the lens; Calibrate the position of the lens to be tested according to a preset calibration strategy to align the sensor chip and the lens to be tested; When adjusting the position of the lens, it includes an OC adjustment stage and an OC inspection stage that are carried out sequentially; Step 4: Determine the category of the lens to be tested according to a preset determination strategy, and the category of the lens to be tested includes a good-quality lens and a defective lens. The present invention can accurately and quickly complete the quality test of the incoming lens, with high accuracy and meticulousness in lens testing and high test reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of lens testing, and in particular to a method and device for testing incoming lens materials. Background Art

[0002] In recent years, innovations in electronic devices, such as mobile phones, have primarily focused on optical design. Consequently, the functional and quality requirements for the camera modules they use have been steadily increasing. As a key component of a camera module, the quality of the lens itself directly impacts the overall imaging quality. Therefore, the quality of the lens itself is crucial in camera module production.

[0003] Compared to testing the components of the camera module after assembly is complete, it is more economical and effective to conduct targeted testing on the incoming lenses before assembly begins. An existing lens testing method often adopts the following steps when conducting a test: Step 1: Adjust the relative position between the lens and the sensor; Step 2: Test and verify whether the clearest shooting distance is the required predetermined optimal shooting distance. If so, proceed to Step 3. If not, repeat Steps 1 and 2; Step 3: Final inspection to determine the lens quality. This testing method has a relatively simple step arrangement, but because the lens position needs to be adjusted repeatedly, and there is no corresponding adjustment standard for the specific adjustment step arrangement, it takes a lot of time to adjust the position repeatedly. In addition, since the quality is only judged by the final inspection step during the entire test process, the judgment standard is relatively simple, the judgment is less detailed, and the reliability of the lens quality judgment is not high. Summary of the Invention

[0004] The present invention aims to provide a method and device for testing incoming lens materials, which can accurately and quickly complete the quality test of incoming lenses, with high accuracy and detail in lens testing and high test reliability.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] Option 1:

[0007] A method and device for testing incoming lens materials, comprising the following steps:

[0008] Step 1: Place the lens to be tested on top of the sensor chip;

[0009] Step 2: Light up the sensor chip;

[0010] Step 3: Adjust the lens position; calibrate the position of the lens to be tested according to the preset calibration strategy to align the sensor chip and the lens to be tested; when adjusting the lens position, it includes the OC adjustment stage and the OC inspection stage;

[0011] Step 4: Determine the category of the lens to be tested according to a preset determination strategy, where the category of the lens to be tested includes qualified lenses and unqualified lenses.

[0012] The working principle and advantages of this solution are as follows: When adjusting the lens position, it is adjusted according to a preset calibration strategy. Compared with the conventional method of directly comparing images and repeatedly performing displacement adjustments, this solution is adjusted according to a certain calibration strategy, and the adjustment of the lens position is carried out in the OC adjustment stage and the OC inspection stage in sequence, refining the adjustment process. Instead of simply performing repeated displacement adjustments, it is carried out in an orderly manner with OC adjustment and OC inspection, without performing repeated steps, ensuring that the step arrangement is coherent and effective; compared with the conventional solution, this solution has fewer repeated step arrangements in adjustment, and the adjustment of the lens position is more orderly and systematic, enabling the lens position to be adjusted more quickly. Furthermore, the quality test of the incoming lenses can be completed efficiently, and the accuracy and meticulousness of the lens test are relatively high, and the test reliability is relatively high.

[0013] Further, it further includes Step 5: Output the qualified lenses to the next process; output the unqualified lenses to the lens tray.

[0014] With such a setting, the qualified lenses and unqualified lenses are sorted and output, and the sorting work of the lenses is completed immediately at the end of the test, facilitating the arrangement of subsequent assembly work.

[0015] Further, the preset calibration strategy includes an OC adjustment strategy for the OC adjustment stage and an OC inspection strategy for the OC inspection stage.

[0016] Corresponding calibration processing strategies are respectively set for different lens position adjustment stages, and the strategy arrangement is more targeted, and the meticulousness of the position adjustment is higher.

[0017] Further, the OC adjustment strategy includes the following sub-steps:

[0018] Sub-step 1: Perform optical center adjustment; adjust the lens position in six degrees of freedom directions to align with the optical center and the center of the sensor chip;

[0019] Sub-step 2: Take a preset value, perform CPS adjustment according to the preset value, and confirm the mean value of the distribution curve;

[0020] Sub-step 3: Perform the final inspection of OC adjustment and scan to confirm the OC adjustment situation.

[0021] With such settings, the central positions of the lens under test and the sensor chip are preliminarily adjusted and aligned, and CPS adjustment is performed according to preset values. Here, CPS adjustment is a data arrangement step for the distribution curve obtained by scanning, that is, for the scattered distribution curve, it is regularized and integrated according to a unified coordinate system to make it easier to analyze and observe. After arranging the distribution curve, the mean value of the distribution curve is further calculated. With such settings, it is more convenient to accurately calculate the mean value, and this mean value helps to determine the alignment of the optical center and the sensor chip center. After value calculation, the alignment is scanned and confirmed again to re-check the alignment to ensure high meticulousness of the inspection, so as to ensure that defective lenses are not missed and the reliability of the test is relatively high.

[0022] Furthermore, the OC inspection strategy includes the following sub-steps:

[0023] S1: Adjust the coordinate displacements in the X-axis and Y-axis directions according to the OC adjustment situation;

[0024] S2: Verify the alignment of the optical center;

[0025] S3: Adjust the Z-axis coordinate displacement for focusing adjustment;

[0026] S4: Verify the alignment of the optical axis.

[0027] With such settings, based on the OC adjustment stage, OC adjustment is performed again. From the XYZ three-axis level, the alignment of the optical axis center and the alignment of the optical axis are finely adjusted. The alignment can be confirmed through fewer adjustments, which helps to quickly detect the quality of the lens.

[0028] Furthermore, the preset determination strategy is: According to the alignment of the optical axis, scan and calculate the mean value of the distribution curve. If the mean value of the distribution curve reaches the standard score, it is determined as a good-quality lens; if the curve score does not reach the standard score, it is determined as a defective lens.

[0029] Specific score criteria are set. Based on the mean value of the distribution curve, the determination is made from the numerical level. The determination method is more accurate and reliable compared to simple image comparison.

[0030] Furthermore, in the OC adjustment strategy and the OC inspection strategy, each sub-step is correspondingly set with a stage standard score; after a single sub-step is completed, scan and calculate the mean value of the distribution curve. If the mean value of the distribution curve reaches the stage standard score, the next step is executed; if the mean value of the distribution curve does not reach the stage standard score, it is determined as a defective lens.

[0031] After a single execution of the steps, the scanning confirmation of the distribution curve and the calculation and determination of the mean value of the distribution curve were immediately carried out. The determination steps were refined to the whole process of lens position adjustment, enabling the determination of lens quality to be monitored throughout the process, and lenses that do not meet the standards can be screened out in a timely manner. The meticulousness and accuracy of lens screening are relatively high. And with such a setting, the number of adjustment and inspection steps is directly related to the quality of the lens itself. For lenses that are significantly substandard, fewer inspection steps can screen them out. Compared with the existing solution where the position of each lens is repeatedly adjusted and then judged according to the final inspection result, the detection efficiency of this solution is higher and the detection result is more accurate. This solution refines the adjustment and inspection steps and sets corresponding stage standard scores for each sub-step. The judgment of the lens is no longer the usual result-based judgment but a stage-based judgment.

[0032] Solution Two:

[0033] A device for lens incoming material testing, for a method for lens incoming material testing as described in Solution One; it includes a controller, an AA module, and a Chart module; the AA module includes a multi-axis adjustment mechanism; the multi-axis adjustment mechanism is used to move the lens to be tested; the Chart module is arranged opposite to the sensor chip, and the Chart module is used to cooperate with the sensor chip to collect the lens analysis image; the controller establishes communication connections with the AA module, the Chart module, and the sensor chip; the controller is used to control the AA module to calibrate the position of the lens to be tested according to a preset calibration strategy.

[0034] The working principle and effect of this solution are as follows: The multi-axis adjustment mechanism of the AA module adjusts the lens position, and during the adjustment process, the lens quality is judged in combination with the lens analysis images collected by the Chart module and the sensor chip. Moreover, during the adjustment process, the adjustment is carried out according to a preset calibration strategy, which can complete the testing of the lens in an orderly and systematic manner, and the testing accuracy is relatively high.

[0035] Furthermore, the AA module further includes a telephoto adjustment module; the telephoto adjustment module includes a telephoto lens and an adjustment mechanism; the telephoto lens is used to extend the focal length, and the adjustment mechanism is used to adjust the position of the telephoto lens.

[0036] With such a structure, it is possible to simulate an infinite far test environment with the telephoto lens, and a more diverse test environment can be constructed, which helps to increase the applicable range of the system.

[0037] Further, it further includes a material taking module communicatively connected to the controller; the material taking module includes a CCD positioning mechanism, a multi-directional driving mechanism, and a lens suction mechanism; the CCD positioning mechanism is used to position the lens to be tested; the multi-directional driving mechanism is connected to the lens suction mechanism, and the multi-directional driving mechanism is used to adjust the position of the lens suction mechanism, and the lens suction mechanism is used to suck the lens to be tested.

[0038] With this structure, through the CCD positioning mechanism, the multi-directional driving mechanism and the lens suction mechanism can accurately confirm the position of the lens to be tested, and then accurately suck and transfer the lens. With the comprehensive control of the controller, it can automatically and intelligently complete the lens material taking, and the system operates reliably and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic flowchart of the method of an embodiment of a method and device for testing incoming lens materials of the present invention;

[0040] Figure 2 It is a distribution curve graph of the method of an embodiment of a method and device for testing incoming lens materials of the present invention under the first preset value;

[0041] Figure 3 It is a schematic structural diagram of the AA module of the system of an embodiment of a method and device for testing incoming lens materials of the present invention;

[0042] Figure 4 It is a schematic structural diagram of the material taking module of the system of an embodiment of a method and device for testing incoming lens materials of the present invention;

[0043] Figure 5 It is a schematic structural diagram of the Lens feeding module of the system of an embodiment of a method and device for testing incoming lens materials of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The following is a more detailed description through specific embodiments:

[0045] The embodiment is basically as shown in the attached Figure 1 、 Figure 2 : A method for testing incoming lens materials includes the following steps:

[0046] Step 1: Place the lens to be tested above the sensor chip.

[0047] Step 2: Light up the sensor chip. Here, "light up" specifically means allowing current to pass through the sensor chip smoothly, so that the sensor chip is in a usable working state. Such a setting facilitates the subsequent alignment determination between the lens and the sensor chip. After lighting up the sensor chip, the number, model, and other information of the sensor chip are also scanned and recorded for subsequent auxiliary analysis.

[0048] Step 3: Adjust the lens position; calibrate the position of the lens under test according to the preset calibration strategy to align the sensor chip and the lens under test; when adjusting the lens position, it includes an OC adjustment stage and an OC inspection stage that are carried out in sequence.

[0049] Specifically, the preset calibration strategy includes an OC adjustment strategy for the OC adjustment stage and an OC inspection strategy for the OC inspection stage. Moreover, in the OC adjustment strategy and the OC inspection strategy, each sub-step is correspondingly provided with a stage standard score; after a single sub-step is completed, the mean value of the scanned calculation distribution curve is calculated. If the mean value of the distribution curve reaches the stage standard score, the next step is executed; if the mean value of the distribution curve does not reach the stage standard score, it is determined as a defective lens. And this stage standard score gradually increases as the steps progress. In this embodiment, it increases in units of 1 score. For example, the stage standard score corresponding to S1 is 41, the stage standard score corresponding to S2 is 42, and the stage standard score corresponding to S3 is 43. Such a setting can regularly and progressively determine the lens quality, gradually screen out accurate good lenses, and at the same time promptly screen out defective lenses.

[0050] The OC adjustment strategy includes the following sub-steps:

[0051] Sub-step 1: Perform optical center adjustment; adjust the lens position from six degrees of freedom directions to align the optical center and the sensor chip center. Here, the six degrees of freedom directions include Px, Py, Pz and Tx, Ty, Tz, that is, the movement and rotation on the XYZ axes.

[0052] Sub-step 2: Take a preset value, perform CPS adjustment according to the preset value, and confirm the mean value of the distribution curve. This mean value helps to determine the alignment of the optical center and the sensor chip center.

[0053] The distribution curve mentioned in this embodiment refers to the MTF curve. The MTF curve is the MTF curve (MTF chart) of the lens, which is a modulation transfer function and a quantitative description of the resolution of the lens. Specifically, it is a quantitative description of the clarity of the lens imaging (including two factors: resolution and sharpness). Among them, the X-axis represents the distance from the center of the picture to the edge, and the Y-axis represents the MTF value. The higher the MTF value, the better the lens resolution. This distribution curve is obtained by analyzing the captured image of the lens under test.

[0054] Specifically, in this embodiment, the preset values include a first preset value and a second preset value. Among them, the first preset value can be taken as 0.6, and the second preset value can be taken as 0.3. This preset value is the step value for controlling the movement and adjustment of the lens. After taking the first preset value, a first distribution curve is scanned, and CPS adjustment is performed on the first distribution curve, that is, the data of the scanned first distribution curve is sorted to make the arrangement of the first distribution curve more convenient for analysis and calculation, and further, the mean value of the first distribution curve is calculated based on the sorted first distribution curve. Further, take the second preset value, scan to obtain a second distribution curve, perform CPS adjustment on the second distribution curve, and further calculate the mean value of the second distribution curve based on the sorted second distribution curve. With such settings, the mean value is confirmed multiple times by taking different preset values, which can effectively eliminate the influence of error factors and make the subsequent determination more accurate.

[0055] Sub-step 3: Conduct the final inspection of OC adjustment and scan to confirm the OC adjustment situation. That is, scan and calculate the mean value of the distribution curve, and confirm whether the mean value of the distribution curve at this time reaches the stage standard score of this stage. If it reaches, the OC inspection stage can be executed; if it does not reach, it is immediately determined as a defective lens.

[0056] The OC inspection strategy includes the following sub-steps:

[0057] S1: Adjust the coordinate displacements in the X-axis and Y-axis directions according to the OC adjustment situation.

[0058] Specifically, according to the distribution curve used during verification in the OC adjustment situation, observe the peak value of the curve distribution. The peak value indicates the best performance of the lens resolution corresponding to this position. For example: if the abscissas (the distance values from the center to the edge of the image) corresponding to the peak values of several curves are all close to the value a, then based on this value and according to the actual situation, increase or decrease the coordinate displacements in the X-axis and Y-axis directions to make the abscissas corresponding to the peaks of several curves closer to the value a.

[0059] S2: Verify the optical center alignment situation; the optical center alignment situation refers to the alignment situation between the optical center of the lens and the physical center of the sensor chip. During this verification step, the mean value of the distribution curve is also scanned and calculated to confirm whether the mean value of the distribution curve at this time reaches the stage standard score of this stage. If it reaches, the next step can be executed; if it does not reach, it is immediately determined as a defective lens.

[0060] S3: Adjust the Z-axis coordinate displacement for focus adjustment. Specifically, increase or decrease the displacement in the Z-axis direction to adjust the focal length.

[0061] S4: Verify the optical axis alignment situation.

[0062] Specifically, an image is collected through a lens, and the blur or deviation degree of the image is verified. If the blur degree or deviation degree is higher than the standard value, the lens is determined to be a defective lens; if the blur degree or deviation degree is lower than the standard value, the subsequent steps are carried out.

[0063] Step 4: Determine the category of the lens to be tested according to the preset determination strategy, and the category of the lens to be tested includes a qualified lens and a defective lens.

[0064] The preset determination strategy is as follows: According to the coaxial alignment situation, the mean value of the distribution curve is scanned and calculated. If the mean value of the distribution curve reaches the standard score, it is determined to be a qualified lens; if the curve score does not reach the standard score, it is determined to be a defective lens.

[0065] Step 5: Output the qualified lens to the next process; output the defective lens to the lens tray.

[0066] A method for lens incoming material testing provided in this embodiment refines the position adjustment and detection process of the incoming material lens in a staged manner through the sequentially performed OC adjustment stage and OC inspection stage, as well as the corresponding OC adjustment strategy for the OC adjustment stage and the OC inspection strategy for the OC inspection stage. The inspection operation is subdivided into each step of the method, and corresponding stage standard scores, standard scores, etc. are set as the determination criteria to ensure the reliability of each determination. Moreover, the setting of multiple determinations effectively improves the accuracy of lens detection and ensures that defective lenses are not missed. During the testing process, if a single determination fails to meet the standard, the lens is determined to be a defective lens without excessive adjustment and detection, saving testing resources and helping to improve testing efficiency.

[0067] Compared with the conventional lens detection scheme, the method often adopted is to repeatedly adjust the position between the lens and the sensor chip, and then perform a final scan inspection to confirm the quality of the lens. Although the step arrangement of this method is relatively simple, in practical applications, the repeated position adjustment will consume a large amount of testing time. At the same time, since only the final inspection step is used for quality determination throughout the testing process, the determination standard is relatively single, the determination fineness is low, and affected by the adjustment time or adjustment accuracy during the repeated position adjustment, the same lens may show different qualities during the final inspection, and the reliability of detection is poor.

[0068] However, this solution breakthroughly refines the adjustment steps, sets multiple inspection steps, and adopts a more multi-step arrangement to replace the conventional two-step arrangement. In the conventional solution, it is considered that a more multi-step arrangement will reduce the detection efficiency. However, in fact, this conventional two-step process is affected by the repeatedly adjustable steps that cannot be accurately determined, and there are many ineffective adjustment actions. The time consumed is actually more than that of the multi-stage adjustment and verification method carried out according to the calibration strategy in this solution. In this solution, the adjustment and inspection are closely linked. Instead of performing repeated and redundant adjustment steps, the next step is arranged based on the verification situation of the previous adjustment. Each inspection not only makes a corresponding judgment on the current lens, but also provides the basis for the next adjustment for the lens that reaches the stage standard score. Each step arrangement is an effective action, which can make full use of the test time.

[0069] Moreover, since the conventional solution spends a long time making repeated position adjustments and then final inspections for all lenses without making judgments during the adjustment process, the detection process and time are the same for all lenses. In this solution, since the adjustment stage is divided into an OC adjustment stage and an OC inspection stage that are carried out sequentially, and a verification is performed after each sub-step in each stage, for defective lenses, there is a chance to be detected in the early stage of the adjustment execution, and subsequent stages do not need to be executed, so defective lenses can be screened out in a timely and efficient manner. Moreover, multiple verification steps can ensure reliable judgment and high accuracy for good lenses.

[0070] This embodiment also provides a device for lens incoming material testing, which is used for the above-mentioned method for lens incoming material testing; it includes a controller, and a material taking module, a loading and unloading module, an AA module, and a Chart module arranged inside the chassis; the AA module includes a multi-axis adjustment mechanism and a teleconverter adjustment module, as shown in the appendix Figure 3 shown. The multi-axis adjustment mechanism is used to move the lens to be tested. There is an XYZ three-axis linear motor platform on the multi-axis adjustment mechanism, and an AA fixture is arranged on the XYZ three-axis linear motor platform. The AA fixture is used to clamp the lens, and then the AA fixture is driven to move by the XYZ three-axis linear motor platform. The adjustment directions of the multi-axis adjustment mechanism include the displacement directions of the X / Y / Z axes and the rotation directions of the Tx / Ty / Tz axes. Among them, the repeat accuracy of the X / Y / Z axes is higher than ±2um, and the repeat accuracy of the Tx / Ty / Tz axes needs to be higher than 0.003° to achieve a high position adjustment accuracy. The teleconverter adjustment module includes a teleconverter and an adjustment mechanism; the teleconverter is used to extend the focal length, and the adjustment mechanism is used to adjust the position of the teleconverter. [[ID=?]]

[0071] The Chart diagram module is disposed opposite to the sensor chip, and the sensor chip is disposed on a test base provided with a heat dissipation device. The Chart diagram module, as a test card, can cooperate with the sensor chip to collect lens analysis images; the Chart diagram module is also connected to a Chart diagram lifting mechanism, and the Chart diagram lifting mechanism is used to move the Chart diagram module to facilitate adjusting the image acquisition height of the sensor chip. In this embodiment, the Chart diagram lifting mechanism adopts a conventional lifting mechanism with adjustable height displacement. At the same time, a backlight is also provided on the Chart diagram module, and the backlight is used to provide a light source to facilitate the Chart diagram module to collect clear lens analysis images. Specifically, in this embodiment, the light-emitting area of the backlight is ≥1000mm*1000mm or more; the color temperature of the backlight plate is set to 7000±500, the brightness is set to 2000±500lux, and the uniformity of the light source is ≥90%, so set to ensure that the collected image quality is good and convenient for analysis and adoption.

[0072] The controller establishes communication connections with the material taking module, the loading and unloading module, the AA module, the Chart diagram module, and the sensor chip; the controller is used to control the AA module to calibrate the position of the lens to be tested according to a preset calibration strategy, and the controller can also control the Chart diagram lifting mechanism to adjust the image acquisition height; and control the material taking module and the loading and unloading module to cooperate with the AA module in a timely manner to automatically complete the transmission and transfer of the lens.

[0073] As shown in the Figure 4 attachment, the material taking module includes a CCD positioning mechanism, a multi-directional driving mechanism, and a lens suction mechanism; the CCD positioning mechanism is used to position the position of the lens to be tested; the multi-directional driving mechanism is connected to the lens suction mechanism, and the multi-directional driving mechanism is used to adjust the position of the lens suction mechanism, and the lens suction mechanism is used to suck the lens to be tested.

[0074] As shown in the Figure 5 attachment, the loading and unloading module includes a Lens feeding module and an NG tray module. The Lens feeding module includes a magazine lifting module and an upper and lower double-layer assembly line. The magazine lifting module is used to switch the number of layers of the assembly line. The upper layer of the upper and lower double-layer assembly line is used to transport the incoming lenses to be detected, and the lower layer of the upper and lower double-layer assembly line is used to transport the qualified lenses after detection. The NG tray module is disposed on one side of the upper and lower double-layer assembly line, and the NG tray module is used to transport the defective lenses. The loading and unloading module is disposed on one side of the material taking module, and the lens suction mechanism is correspondingly located above the upper and lower double-layer assembly line.

[0075] In specific applications, the magazine lifting module and the upper and lower double-layer assembly lines cooperate to transfer the incoming lenses to the picking module. The CCD positioning mechanism of the picking module locates the position of the lens, and the multi-directional driving mechanism drives the lens suction mechanism to suck the lens to be tested. After sucking the lens, the multi-directional driving mechanism drives the lens suction mechanism to transfer the lens to be tested to the multi-axis adjustment mechanism, and the multi-axis adjustment mechanism then drives the lens to participate in the test according to the preset calibration strategy. After the test is completed, the multi-axis adjustment mechanism transfers the lens to the lens suction mechanism again, and the lens suction mechanism places the qualified lenses on the upper and lower double-layer assembly lines for continuous transmission, and places the unqualified lenses on the NG tray module to complete the test and sorting of the incoming lenses.

[0076] A device for testing incoming lenses provided in this embodiment is comprehensively controlled by a controller. This solution can automatically and intelligently implement the quality inspection and sorting steps of incoming lenses, with high operating efficiency, and can finely complete the position adjustment and inspection of the lenses in stages according to the preset calibration strategy, and the test accuracy is relatively high.

[0077] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or system. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0078] The above are only the embodiments of the present invention. Common knowledge such as the specific structures and characteristics known in the art are not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can also be made, and these should also be regarded as the protection scope of the present invention, which will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A method for incoming lens testing, characterized in that, Including the following steps: Step 1: Place the lens to be tested above the sensor chip; Step 2: Light up the sensor chip; Step 3: Adjust the position of the lens; Calibrate the position of the lens to be tested according to a preset calibration strategy to align the sensor chip and the lens to be tested; When adjusting the position of the lens, it includes an OC adjustment stage and an OC inspection stage that are carried out in sequence; Step 4: Determine the category of the lens to be tested according to a preset determination strategy, and the category of the lens to be tested includes a qualified lens and a defective lens; The preset calibration strategy includes an OC adjustment strategy for the OC adjustment stage and an OC inspection strategy for the OC inspection stage; The OC adjustment strategy includes the following sub-steps: Sub-step 1: Perform optical center adjustment; Adjust the position of the lens in six degrees of freedom directions to align the optical center and the center of the sensor chip; Sub-step 2: Take preset values, perform CPS adjustment according to the preset values, and confirm the mean value of the distribution curve; The preset values include a first preset value and a second preset value. Among them, the first preset value is taken as 0.6, and the second preset value is taken as 0.

3. This preset value is the step value for controlling the lens movement adjustment; After taking the first preset value, a first distribution curve is scanned, and CPS adjustment is performed on the first distribution curve, that is, the data of the scanned first distribution curve is sorted to make the arrangement of the first distribution curve more convenient for analysis and calculation, and further, the mean value of the first distribution curve is calculated according to the sorted first distribution curve; Further, take the second preset value, scan to obtain a second distribution curve, perform CPS adjustment on the second distribution curve, and further calculate the mean value of the second distribution curve according to the sorted second distribution curve; Sub-step 3: Perform the final inspection of OC adjustment and scan to confirm the OC adjustment situation; The OC inspection strategy includes the following sub-steps: S1: Adjust the coordinate displacements in the X-axis and Y-axis directions according to the OC adjustment situation; S2: Verify the alignment of the optical center; S3: Adjust the Z-axis coordinate displacement for focus adjustment; S4: Verify the alignment of the optical axis; In the OC adjustment strategy and the OC inspection strategy, each sub-step is correspondingly provided with a stage standard score; After a single sub-step is completed, the mean value of the distribution curve is scanned and calculated. If the mean value of the distribution curve reaches the stage standard score, the next step is executed; If the mean value of the distribution curve does not reach the stage standard score, it is determined as a defective lens; The stage standard score gradually increases as the steps progress and increases in units of 1 score.

2. The method for incoming lens testing according to claim 1, characterized in that, It also includes Step 5: Output the qualified lens to the next process; Output the defective lens to the lens tray.

3. A method for incoming lens testing according to claim 1, characterized in that, [[ID= 4. A device for incoming lens testing, characterized in that, ​ It includes a controller, an AA module, and a Chart module; the AA module includes a multi-axis adjustment mechanism; the multi-axis adjustment mechanism is used to move the lens to be measured; the Chart module is arranged opposite to the sensor chip, and the Chart module is used to cooperate with the sensor chip to collect the lens resolution image; the controller is communicatively connected to the AA module, the Chart module, and the sensor chip; the controller is used to control the AA module to calibrate the position of the lens to be measured according to a preset calibration strategy.

5. The device for incoming lens testing according to claim 4, characterized in that, The AA module further includes a teleconverter adjustment module; the teleconverter adjustment module includes a teleconverter and an adjustment mechanism; the teleconverter is used to extend the focal length, and the adjustment mechanism is used to adjust the position of the teleconverter.

6. The device for incoming lens testing according to claim 4, characterized in that, It further includes a picking module communicatively connected to the controller; the picking module includes a CCD positioning mechanism, a multi-directional driving mechanism, and a lens suction mechanism; the CCD positioning mechanism is used to position the position of the lens to be measured; the multi-directional driving mechanism is connected to the lens suction mechanism, and the multi-directional driving mechanism is used to adjust the position of the lens suction mechanism, and the lens suction mechanism is used to suck the lens to be measured.

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