A method of testing and adjusting a mold for a chimeric lens

Abstract

The present application relates to the technical field of chimeric lens manufacturing, and particularly to a test adjustment method of a chimeric lens mold. The mold is designed and processed according to the structure of the chimeric lens, and the assembly surface of the chimeric lens is a chimeric bevel. The test adjustment method of the chimeric lens mold measures the mold by a three-dimensional measuring instrument to obtain mold point data, designs a point data analysis method, analyzes the judgment diameter, the chimeric height and the chimeric angle of the chimeric bevel of the mold by the point data analysis method, obtains the chimeric lens by injection molding with the manufactured mold, judges whether the mold is qualified by detecting whether the assembly of the chimeric part of the chimeric lens is qualified, analyzes the judgment diameter, the chimeric height and the chimeric angle of the chimeric bevel of the chimeric lens by the point data analysis method, calculates the mold adjustment amount by the data of the mold and the chimeric lens obtained by the analysis method if the chimeric lens is unqualified, and adjusts the mold to the qualified manufacturing standard quickly and accurately.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chimeric lens manufacturing, and particularly to a testing and adjusting method for a chimeric lens mold. BACKGROUND

[0002] In a conventional lens structure, chimeric lenses are often combined together in a simple stacking manner, that is, there is only a horizontal bearing surface between the chimeric lenses. Such a structure makes the chimeric lenses only constrained in the horizontal direction by the inner diameter of the lens barrel. That is, the coaxiality between the chimeric lenses is completely limited by the coaxiality of the inner diameter of the lens barrel. Such a structure may still be applicable to low-end lenses with a small number of chimeric lenses and a relatively loose requirement on the imaging quality of the chimeric lenses. However, with an increase in the number of chimeric lenses and a tightening of the requirement on the imaging quality, the influence of the element eccentricity between the chimeric lenses on the final imaging result is very great. Moreover, the chimeric lens structure after optical design is actually different in shape, and therefore the simple stacking manner makes the design space of the chimeric lens structure relatively narrow. The use of chimeric lenses can make up for this defect, and the manufacturing precision of the chimeric lenses is relatively high, so the mold for manufacturing the chimeric lenses needs to have a relatively high manufacturing standard.

[0003] At present, the instruments capable of measuring the size of the chimeric lens and the mold chimeric part include QV, automatic focusing image measuring instrument FTS, profilometer UA3P, three-dimensional stereoscopic measuring instrument FTS, and QV: which can measure the chimeric contact surface diameter, non-contact surface diameter, contact bevel judgment diameter, and chimeric height, but cannot measure the chimeric angle. UA3P: can output the chimeric height through contact measurement, but can only output chimeric part point data for other chimeric part sizes, and cannot parse the chimeric contact surface diameter and contact bevel judgment diameter, so a relatively accurate mold testing method is needed to test the data of the mold chimeric part, so as to provide a basis and a reference for adjusting the size of the mold, so as to ensure the manufacturing precision of the mold and the chimeric lens. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art, and provides a testing and adjusting method for a chimeric lens mold.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: a testing and adjusting method for a chimeric lens mold, comprising the following steps:

[0006] Step 1: processing the mold according to the structure design of the chimeric lens, wherein the assembly surface of the chimeric lens is a chimeric bevel, and the chimeric bevel of the chimeric lens corresponds to the chimeric bevel of the mold;

[0007] Step 2, measuring the mold by a three-dimensional measuring instrument to obtain mold point data, designing a point data analysis method, and analyzing the judging diameter, embedding height and embedding angle of the mold embedding bevel according to the measured mold point data by using the point data analysis method;

[0008] Step 3, forming the embedding lens by using the mold with qualified processing quality, measuring the embedding lens point data of the formed embedding lens by a three-dimensional measuring instrument, and analyzing the judging diameter, embedding height and embedding angle of the embedding bevel of the embedding lens according to the measured embedding lens point data by using the point data analysis method;

[0009] Step 4, assembling the embedding lens by the embedding bevel of the embedding lens, testing the assembled embedding lens group after the assembly is completed, if the test is qualified, the mold is qualified, if the test is unqualified, modifying the mold structure according to the data of the mold embedding bevel and the data of the embedding bevel of the embedding lens;

[0010] Step 5, processing the mold according to the modified mold structure, and repeating steps 1-5 until the mold test is qualified.

[0011] Further, in step 1, the structure of all embedding lenses is designed first, at least including two pieces of embedding lenses assembled together by embedding bevels, and the mold is designed and processed for the structure of each piece of embedding lens.

[0012] Further, the processed mold is detected for processing quality to detect whether the mold processing quality is qualified.

[0013] Further, in step 2, the middle profile line of the mold surface is passed through by the probe of the three-dimensional measuring instrument to measure the mold point data of the mold embedding bevel of the mold core surface.

[0014] Further, the mold core surface is measured in two left and right sections under the condition that the three-dimensional measuring instrument coordinate system is kept unchanged, the probe is lifted after the left embedding bevel part is measured, the probe is moved to the right embedding bevel part for measurement, and the sandblasting part in the middle of the mold core is avoided.

[0015] Further, in step 2, the point data analysis method specifically includes:

[0016] The point data of the left and right embedding lower contact surfaces is fitted to a straight line L1: y=k1x+b1, the point data of the left embedding bevel is fitted to a straight line L2: y=k2x+b2, the point data of the right embedding bevel is fitted to a straight line L3: y=k3x+b3, L1 and L2, L3 have two intersection points, the midpoint (c_x, c_y) of the two intersection points can be obtained

[0017]

[0018] For the point data set N (N≥300) groups of data (x i , y i ), (i=1, 2, 3, …, N) output by the three-dimensional measuring instrument, each point is rotated to L1 level around (c_x, c_y), then the rotated point data set M (change_x i , change_y i ) has the following relationship:

[0019] If k1>0, then:

[0020]

[0021]

[0022] If k1<0, then:

[0023]

[0024]

[0025] For the rotated point data set M (change_x i , change_y i ), the point data fitting straight line L1:y=k1x+b1 is taken again on the left and right embedded contact surface, the point data fitting straight line L2:y=k2x+b2 is taken on the left embedded inclined surface, the point data fitting straight line L3:y=k3x+b3 is taken on the right embedded inclined surface, and the point data fitting straight line L4:y=k4x+b4 is taken on the left and right embedded non-contact surface;

[0026] The difference between the intersection horizontal coordinates of L1, L2 and L1, L3 is the contact surface diameter, which is equal to

[0027] The difference between the intersection horizontal coordinates of L4, L2 and L4, L3 is the non-contact surface diameter, which is equal to

[0028] The diameter of the inclined surface at a height difference of 0.06mm from the contact surface is the contact inclined surface judgment diameter, if b1>b4, the difference between the intersection horizontal coordinates of the straight line y=b1-0.06 and L2, L3 is the contact inclined surface judgment diameter, which is equal to If b1<=b4, the difference between the intersection horizontal coordinates of the straight line y=b1+0.06 and L2, L3 is the contact inclined surface judgment diameter, which is equal to

[0029]

[0030] The fitting height is equal to |b1-b4|, the included angle between L2, L3 and the Z axis is the fitting angle, the left fitting angle is equal to 90-|(arctan(k2)*180 / π)|, and the right fitting angle is equal to 90-|(arctan(k3)*180 / π)|.

[0031] Further, in step 3, it is judged whether the fitting lens has obvious shrinkage defects, if there are obvious shrinkage defects, the mold is redesigned, if there are no obvious shrinkage defects, the middle profile line of the fitting lens surface is passed through by the probe of the three-dimensional measuring instrument, the fitting lens point data of the fitting lens fitting bevel is measured, the fitting lens fitting bevel judgment diameter, fitting height and fitting angle are obtained, and the shrinkage rate of the fitting lens is calculated, and the shrinkage rate of the fitting lens is equal to |fitting lens fitting contact surface diameter-mold contact surface diameter|÷mold contact surface diameter.

[0032] Further, the step 4 specifically comprises: selecting two pieces of fitting lenses with fitting angles and fitting heights meeting the drawing tolerance, assembling the two pieces of fitting lenses, and performing a torsion test, if the two pieces of fitting lenses do not deform and do not fall off after appropriate torsion is applied, the two pieces of fitting lenses are assembled and fitted to be qualified, if the fitting lenses are stuck or fall off after torsion is applied, the two pieces of fitting lenses are assembled and fitted to fail, the average difference D of the contact bevel judgment diameters of the two pieces of fitting lenses of each group of fitting lenses assembled and fitted to be qualified is obtained through a large number of assembly experiments, D is set as the fitting assembly qualification judgment standard, the contact bevel judgment diameter difference D' of the assembly experiment of the unqualified assembly is obtained, the theoretical mold repairing amount is |D'-D|, and the actual mold repairing amount is |D'-D|÷(1-shrinkage rate).

[0033] The beneficial effects of the present application are: from the above description of the present application, compared with the prior art, the test adjustment method of the fitting lens mold of the present application measures the mold point data through the three-dimensional measuring instrument, designs the point data analysis method, analyzes the mold fitting bevel judgment diameter, fitting height and fitting angle through the point data analysis method, obtains the fitting lens through the mold injection, judges whether the mold is qualified by detecting whether the fitting part assembly of the fitting lens is qualified, analyzes the fitting lens fitting bevel judgment diameter, fitting height and fitting angle through the point data analysis method, calculates the mold repairing amount through the data of the mold and the fitting lens obtained through the analysis method if the fitting lens is unqualified, and the mold can be quickly and accurately adjusted to the qualified manufacturing standard, which is beneficial to improve the repairing accuracy and reduce the repairing frequency. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The step flow chart of the test adjustment method of the fitting lens mold in the preferred embodiment of the present application;

[0035] Figure 2 FIG. 1 is a schematic diagram of fitting a straight line in a point data analysis method in a preferred embodiment of the present application;

[0036] Figure 3 FIG. 2 is a schematic diagram of assembling two embedded lenses in a preferred embodiment of the present application;

[0037] FIG. 1 is a schematic diagram of fitting a straight line in a point data analysis method in a preferred embodiment of the present application; DETAILED DESCRIPTION

[0038] The technical solutions in the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Reference Figure 1 As shown in the preferred embodiment of the present application, a test adjustment method of an embedded lens mold comprises the following steps:

[0041] Step 1: According to the structure design of the embedded lens 1, the mold is processed, the assembly surface of the embedded lens 1 is the embedded bevel 2, and the embedded bevel 2 of the embedded lens 1 corresponds to the embedded bevel 2 of the mold;

[0042] Step 2: The mold point data is obtained by measuring the mold through a three-dimensional measuring instrument, a point data analysis method is designed, and the judging diameter, embedded height and embedded angle of the embedded bevel 2 of the mold are analyzed according to the measured mold point data by using the point data analysis method;

[0043] Step 3: The embedded lens 1 is formed by using the mold with qualified processing quality, the embedded lens 1 point data is measured by measuring the formed embedded lens 1 through a three-dimensional measuring instrument, and the judging diameter, embedded height and embedded angle of the embedded bevel 2 of the embedded lens 1 are analyzed according to the measured embedded lens 1 point data by using the point data analysis method;

[0044] Step 4: The embedded lens 1 is assembled through the embedded bevel 2 of the embedded lens 1, and after the assembly is completed, the assembled embedded lens 1 is tested, if the test is qualified, the mold is qualified, if the test is not qualified, the mold structure is modified according to the data of the embedded bevel 2 of the mold and the data of the embedded bevel 2 of the embedded lens 1;

[0045] Step 5, process the mold according to the modified mold structure, repeat steps 1-5 until the mold is qualified.

[0046] The test adjustment method of the chimeric lens mold of the application obtains mold point data by measuring the mold through a three-dimensional measuring instrument, designs a point data analysis method, analyzes the judgment diameter, the embedding height and the embedding angle of the embedding inclined surface 2 of the mold through the point data analysis method, obtains the chimeric lens 1 by injection molding with the manufactured mold, judges whether the mold is qualified by testing whether the assembly of the embedding part of the chimeric lens 1 is qualified, and analyzes the judgment diameter, the embedding height and the embedding angle of the embedding inclined surface 2 of the chimeric lens 1 through the point data analysis method. If the chimeric lens 1 is unqualified, the mold adjustment to the qualified manufacturing standard can be quickly and accurately made by calculating the mold adjustment amount according to the data of the mold and the chimeric lens 1 obtained through the analysis method, which is beneficial to improve the accuracy of mold adjustment and reduce the number of mold adjustment.

[0047] The principle of the application is that the chimeric lens 1 is different from ordinary lenses, the assembly surface of the chimeric lens 1 is the embedding inclined surface 2, and the assembly of adjacent chimeric lenses 1 is positioned and assembled through the embedding inclined surface 2. Therefore, the manufacturing precision of the embedding inclined surface 2 is relatively high, and the numerical precision of the embedding inclined surface 2 of the mold forming the embedding inclined surface 2 of the chimeric lens 1 is also relatively high. Whether the mold needs to be repaired depends on whether the numerical precision of the embedding inclined surface 2 of the mold is qualified. The three-dimensional measuring instrument can measure the data information of the embedding inclined surface 2 of the mold, directly measure the mold point data, and the point data is a profile composed of a series of position points. The profile is analyzed into the judgment diameter, the embedding height and the embedding angle which can represent the overall shape of the embedding inclined surface 2 of the mold through the designed point data analysis method. The chimeric lens 1 is obtained by molding the mold, and the data information of the embedding inclined surface 2 of the chimeric lens 1 is measured in the same way to obtain the judgment diameter, the embedding height and the embedding angle which can represent the overall shape of the embedding inclined surface 2 of the chimeric lens 1. At least two adjacent chimeric lenses 1 are manufactured in the above-mentioned manner, the two adjacent chimeric lenses 1 are assembled, and then assembly test is performed. If the chimeric lens 1 is qualified, the mold is certainly qualified. If the chimeric lens 1 is unqualified, the embedding inclined surface 2 of the mold has a problem, and therefore the mold needs to be repaired. The mold adjustment amount can be calculated according to the judgment diameter, the embedding height and the embedding angle of the embedding inclined surface 2 of the mold and the judgment diameter, the embedding height and the embedding angle of the embedding inclined surface 2 of the chimeric lens 1, so as to quickly and accurately adjust the mold to the qualified manufacturing standard, which is beneficial to improve the accuracy of mold adjustment and reduce the number of mold adjustment, and improve the efficiency.

[0048] As a preferred embodiment of the application, it can also have the following additional technical features:

[0049] In this embodiment, in step 1, the structure of all the chimeric lenses 1 is designed first, at least including two chimeric lenses 1 assembled together through the chimeric bevel 2, and the mold is designed and processed for the structure of each chimeric lens 1. For different lenses, the number of chimeric lenses 1 is different, and compared with the common chimeric lens 1, the optical effective diameter part of the two is the same, and the non-optical effective diameter part of the two is different, the chimeric lens 1 is assembled through the outer diameter part, and the assembly of the common lens is assembled by the outer diameter part and the frame, and the assembly of the chimeric lens 1 is assembled by the chimeric bevel 2 of the adjacent two chimeric lenses 1, so the lens with chimeric lens 1 at least includes two chimeric lenses 1 assembled together through the chimeric bevel 2, and the mold needs to be designed and processed for each chimeric lens 1, in this embodiment, taking two chimeric lenses 1 as an example, as shown in Figure 1

[0050] In this embodiment, the processing quality of the processed mold is detected to detect whether the mold processing quality is qualified. After the mold is completed, the quality of the mold is detected to see whether the mold has obvious defects, so as to ensure that the mold does not have obvious defects to perform the chimeric lens 1 forming operation. Whether the mold is qualified can be judged by the conventional quality detection, which is not described in detail here.

[0051] In this embodiment, in step 2, the mold point data of the mold core surface where the chimeric bevel 2 is located is measured by the probe of the three-dimensional measuring instrument passing through the middle profile line of the mold surface. The probe of the three-dimensional measuring instrument passes through the middle profile line of the mold surface to collect the position information of the point data of the mold surface, and then the position information of the mold point data of the mold core surface where the chimeric bevel 2 is located is obtained. Since the surface of the mold forms the surface of the chimeric lens 1, the surface of the mold can be obtained by rotating 360 degrees from the middle profile line, and the position information of the middle profile line is equivalent to the position information of the mold core surface. This is also the principle of the three-dimensional measuring instrument to measure the position information.

[0052] ​In the embodiment, the mold core surface is measured in two sections, left and right, while keeping the three-dimensional coordinate system unchanged. After measuring the left fitting inclined surface 2, the probe is lifted and moved to the right fitting inclined surface 2 for measurement, avoiding the sandblasting part in the middle of the mold core. To avoid the sandblasting part in the middle of the mold core, which is uneven and can cause damage to the three-dimensional probe and the mold core, the measurement is divided into two sections, with the left fitting part and the right fitting part measured separately. Specifically, after measuring the left fitting part, the probe is lifted and moved to the right fitting part for measurement, avoiding the sandblasting part in the middle and preventing damage to the probe. The final point data lacks position information in the middle part, but this does not affect the analysis of the fitting diameter, fitting height, and fitting angle of the mold fitting inclined surface 2, as the position information of the point data of the mold fitting inclined surface 2 is complete.

[0053] In step 2 of the embodiment, the point data analysis method specifically includes:

[0054] The point data of the left and right fitting lower contact surfaces is fitted to a straight line L1: y = k1x + b1, the point data of the left fitting inclined surface 2 is fitted to a straight line L2: y = k2x + b2, and the point data of the right fitting inclined surface 2 is fitted to a straight line L3: y = k3x + b3. L1 intersects with L2 and L3 at two points, and the midpoint of the two intersection points (c_x, c_y) can be obtained.

[0055]

[0056] For the point data set N (N ≥ 300) of the three-dimensional coordinate measuring instrument (x i , y i ), (i = 1, 2, 3, …, N), each point is rotated around (c_x, c_y) to L1 horizontal. The rotation operation does not change its spatial three-dimensional characteristics, as the three-dimensional coordinate measuring instrument cannot guarantee the horizontality of the mold during measurement. Therefore, rotating the point data to the horizontal state eliminates the error caused by the non-horizontality of the mold. For the circular fitting lens 1, the point data derived in the X and Y directions has the same spatial characteristics, so the rotated point data set M (change_x i , change_y i ) has the following relationship:

[0057] If k1 > 0, then:

[0058]

[0059]

[0060] If k1 < 0, then:

[0061]

[0062]

[0063] For the rotated point data set M(change_x i ,change_y i ), the point data of the left and right fitting contact surfaces are fitted into a straight line L1: y=k1x+b1, the point data of the left fitting inclined surface are fitted into a straight line L2: y=k2x+b2, the point data of the right fitting inclined surface are fitted into a straight line L3: y=k3x+b3, and the point data of the left and right fitting non-contact surfaces are fitted into a straight line L4: y=k4x+b4;

[0064] The difference between the intersection horizontal coordinates of L1, L2 and L1, L3 is the diameter of the contact surface, which is equal to

[0065] The difference between the intersection horizontal coordinates of L4, L2 and L4, L3 is the diameter of the non-contact surface, which is equal to

[0066] The diameter of the inclined surface at a height difference of 0.06 mm from the contact surface is the contact inclined surface judgment diameter, if b1>b4, the difference between the intersection horizontal coordinates of the straight line y=b1-0.06 and L2, L3 is the contact inclined surface judgment diameter, which is equal to If b1<=b4, the difference between the intersection horizontal coordinates of the straight line y=b1+0.06 and L2, L3 is the contact inclined surface judgment diameter, which is equal to

[0067]

[0068] The fitting height is equal to |b1-b4|, the angle between L2, L3 and the Z axis is the fitting angle, the left fitting angle is equal to 90-|(arctan(k2)*180 / π)|, and the right fitting angle is equal to 90-|(arctan(k3)*180 / π)|.

[0069] By fitting the point data position information into a straight line, the specific mold fitting inclined surface 2 parameter information is obtained, and the judgment diameter, fitting height and fitting angle analyzed by the point data analysis method can determine the shape of the entire mold fitting inclined surface 2.

[0070] In the embodiment, in step 3, it is judged whether the shrinkage defect of the embedded lens 1 is obvious. If the shrinkage defect is obvious, the mold is redesigned. If the shrinkage defect is not obvious, the middle profile line of the surface of the embedded lens 1 is passed through by the probe of the three-dimensional measuring instrument, the point data of the embedded lens 1 on the surface of the embedded lens 1 where the embedded bevel 2 is located is measured, the judging diameter, the embedded height and the embedded angle of the embedded bevel 2 of the embedded lens 1 are obtained, and the shrinkage rate of the embedded lens 1 is calculated. The shrinkage rate of the embedded lens 1 = |embedded lens 1 embedded contact surface diameter - mold contact surface diameter| ÷ mold contact surface diameter. The shrinkage phenomenon of the injection molded embedded lens 1 is generally unavoidable. If the embedded lens 1 has obvious shrinkage defect, the embedded lens 1 is definitely unqualified. The judgment standard of the shrinkage defect of the injection molded embedded lens 1 is used to judge whether the embedded lens 1 has obvious shrinkage. For the embedded lens 1 without obvious shrinkage defect, the point data of the embedded lens 1 on the surface of the embedded lens 1 where the embedded bevel 2 is located is measured, the judging diameter, the embedded height and the embedded angle of the embedded bevel 2 of the embedded lens 1 are obtained, and the shrinkage rate is calculated by the shrinkage rate calculation formula. The calculated shrinkage rate provides the basis for the calculation of the mold modification amount. The shrinkage rate calculation formula needs to obtain the judging diameter of the embedded lens 1 and the mold, so the parameters of the embedded bevel 2 of the embedded lens 1 are also obtained by the above method of calculating the mold. Since the surface of the embedded lens 1 is smooth, the probe of the three-dimensional measuring instrument does not need to pass through the middle profile line of the surface of the embedded lens 1 twice. This is different from the method of calculating the mold. The other parts are the same as the method of calculating the mold, so they are not described in detail.

[0071] In the embodiment, step 4 specifically includes: selecting two embedded lenses 1 with embedded angle and embedded height meeting the drawing tolerance, assembling the two embedded lenses 1, and performing torsion test. If appropriate torsion is applied, the two embedded lenses 1 do not deform and do not fall off, then the embedded assembly of the two embedded lenses 1 is qualified. If torsion is applied, the embedded lens 1 is stuck or falls off, then the embedded assembly of the two embedded lenses 1 fails. According to a large number of assembly experiments, the difference between the contact bevel judging diameters of the two embedded lenses 1 of each embedded assembly qualified group is averaged to obtain an average difference D. D is set as the embedded assembly qualified judgment standard. For the assembly experiment of the unqualified group, the difference D' between the contact bevel judging diameters is obtained. The theoretical mold modification amount is |D'-D|, and the actual mold modification amount is |D'-D| ÷ (1-shrinkage rate).

[0072] Two pieces of the embedded lenses 1 with the selected embedded angle and the embedded height meeting the drawing tolerance are assembled to perform an assembly test, which tests whether the embedded bevels 2 of the two pieces of the embedded lenses 1 are qualified, and the embedded bevels 2 are used to assemble the two pieces of the embedded lenses 1, so the test is a torsion test of the two pieces of the embedded lenses 1 after assembly, and the assembly is qualified, which means that the embedded bevels 2 of the two pieces of the embedded lenses 1 are qualified, so the mold for manufacturing the two pieces of the embedded lenses 1 is qualified, if not, according to a large number of assembly experiments, the average difference D is obtained by averaging the difference of the contact bevel judging diameters of the two pieces of the embedded lenses 1 of each group of the embedded lenses 1 that are qualified in the embedded assembly, and D is set as the embedded assembly qualification criterion, then for the unqualified assembly experiment, the difference D' of the contact bevel judging diameters, the theoretical mold modification amount is |D'-D|, and the actual mold modification amount is |D'-D| ÷ (1-shrinkage rate), the shrinkage rate is obtained above, the actual mold modification amount is calculated through the formula, and the structure of the mold is modified according to the actual mold modification amount, so that the mold can be quickly and accurately adjusted to the qualified manufacturing standard, which is beneficial to improve the accuracy of the mold modification and reduce the number of mold modifications.

[0073] The person skilled in the art can freely combine and superimpose the above-mentioned additional technical features without conflicts.

[0074] It can be understood that the present application is described by some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope of the present application.

Claims

1. A method of testing and adjusting a chimeric lens mold, the method comprising: The method comprises the following steps: Step 1, according to the structure design of the embedded lens (1), a mold is processed, and the assembly surface of the embedded lens (1) is an embedded inclined surface (2), and the embedded inclined surface (2) of the embedded lens (1) corresponds to the embedded inclined surface (2) of the mold; Step 2, the mold point data is obtained by measuring the mold through a three-dimensional measuring instrument, a point data analysis method is designed, the judging diameter, the embedded height and the embedded angle of the embedded inclined surface (2) of the mold are analyzed according to the measured mold point data by using the point data analysis method; Step 3, the embedded lens (1) is formed by using the mold with qualified processing quality, the embedded lens (1) point data of the formed embedded lens (1) is measured through a three-dimensional measuring instrument, and the judging diameter, the embedded height and the embedded angle of the embedded inclined surface (2) of the embedded lens (1) are analyzed according to the measured embedded lens (1) point data by using the point data analysis method; Step 4, the embedded lens (1) is assembled through the embedded inclined surface (2) of the embedded lens (1), and after the assembly is completed, the assembled embedded lens (1) is tested, if the test is qualified, the mold is qualified, if the test is not qualified, the mold structure is modified according to the data of the embedded inclined surface (2) of the mold and the data of the embedded inclined surface (2) of the embedded lens (1); Step 5, the mold is processed according to the modified mold structure, and steps 1-5 are repeated until the mold test is qualified; In step 2, the point data analysis method specifically comprises: The point data of the left and right embedded lower contact surfaces is fitted to a straight line L1: y=k1x+b1, the point data of the left embedded inclined surface (2) is fitted to a straight line L2: y=k2x+b2, the point data of the right embedded inclined surface (2) is fitted to a straight line L3: y=k3x+b3, L1 and L2, L3 have two intersection points, the midpoint (c_x, c_y) of the two intersection points can be obtained c_y = k1 * c_x + b1; For the point data set N (N≥300) groups of data (x i , y i ), (i=1, 2, 3, …, N) output by the three-dimensional stereo measuring instrument, each point is rotated to L1 level around (c_x, c_y), then the point data set M (change_x i , change_y i ) after rotation has the following relationship: If k1>0, then: If k1<0, then: For the rotated point data point set M(change_x i , change_y i ), the point data fitting straight line L1 is taken again: y=k1x+b1, the point data fitting straight line L2 is taken for the left fitting inclined surface (2): y=k2x+b2, the point data fitting straight line L3 is taken for the right fitting inclined surface (2): y=k3x+b3, and the point data fitting straight line L4 is taken for the left and right fitting non-contact surfaces: y=k4x+b4; The difference between the intersection abscissas of L1, L2 and L1, L3 is the diameter of the contact surface, which is equal to The difference between the intersection abscissas of L4, L2 and L4, L3 is the non-contact surface diameter, which is equal to If b1 > b4, the difference between the intersection horizontal coordinates of the straight line y = b1 - 0.06 and L2, L3 is the contact slope judging diameter, which is equal to If b1 <= b4, the difference between the intersection horizontal coordinates of the straight line y = b1 + 0.06 and L2, L3 is the contact slope judging diameter, which is equal to The embedded height is equal to |b1-b4|, the angle between L2, L3 and the Z axis is the embedded angle, the left embedded angle is equal to 90-|(arctan(k2)*180 / π)|, and the right embedded angle is equal to 90-|(arctan(k3)*180 / π)|.

2. The method of claim 1, wherein: In step 1, the structures of all embedded lenses (1) are designed first, at least including two embedded lenses (1) assembled together through embedded inclined surfaces (2), and the mold is processed for the structure of each embedded lens (1).

3. The method of claim 1, wherein: In step 2, the processing quality of the processed mold is detected to detect whether the mold processing quality is qualified.

4. The method of claim 1, wherein: In step 2, the mold point data of the mold core surface where the embedded inclined surface (2) is located is measured by moving the probe of the three-dimensional measuring instrument along the middle contour line of the mold surface.

5. The method of claim 4, wherein: When the mold core surface is measured, the three-dimensional measuring instrument coordinate system is kept unchanged, and the left and right parts are measured, the probe is lifted after the left embedded inclined surface (2) part is measured, and the probe is moved to the right embedded inclined surface (2) part for measurement, and the sandblasting part in the middle of the mold core is avoided.

6. The method of claim 1, wherein: In step 3, it is judged whether the embedded lens (1) has obvious shrinkage defects, if there are obvious shrinkage defects, the mold is redesigned, if there are no obvious shrinkage defects, the middle profile line of the embedded lens (1) surface is passed through by the probe of the three-dimensional measuring instrument, the embedded lens (1) point data measurement is carried out on the embedded lens (1) surface where the embedded bevel (2) is located, the judging diameter, the embedded height and the embedded angle of the embedded bevel (2) of the embedded lens (1) are obtained, and the shrinkage rate of the embedded lens (1) is calculated, the shrinkage rate of the embedded lens (1) = |embedded lens (1) embedded contact surface diameter-mold contact surface diameter| ÷ mold contact surface diameter.

7. The method of claim 6, wherein: The step 4 specifically comprises: selecting two pieces of embedded lens (1) with embedded angle and embedded height meeting the drawing tolerance, assembling the two pieces of embedded lens (1), and carrying out torsion test, if appropriate torsion is applied, the two pieces of embedded lens (1) do not deform and do not fall off, then the two pieces of embedded lens (1) are qualified for embedding assembly, if torsion is applied, the embedded lens (1) is stuck or falls off, then the two pieces of embedded lens (1) fail to embed, according to a large number of assembly experiments, the difference between the contact bevel judging diameters of the two pieces of embedded lens (1) of each embedded lens (1) embedding assembly qualified group is averaged to obtain an average difference D, D is set as the embedded assembly qualified judging standard, then for the unqualified assembly experiment group, the difference D' between the contact bevel judging diameters, then the theoretical mold repairing amount is |D'-D|, and the actual mold repairing amount is |D'-D| ÷ (1-shrinkage rate).

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