Glass internal stress performance testing method, device, medium and stress detector

Abstract

The present invention relates to a method, device, medium and stress detector for testing internal stress performance of glass, comprising displaying a scanning measurement setting interface; obtaining target parameter values ​​set for each scanning function option on the scanning measurement setting interface, and determining a measurement mode according to the size relationship between the target parameter value of the measurement time and a plurality of preset time thresholds; controlling a laser emitter to emit laser to a sample glass and controlling the feeding movement of the sample glass according to the measurement mode and the target parameter values ​​set for each scanning function option, so that the laser after passing through the sample glass is split into laser beams propagating along a plurality of paths by a beam splitting mirror, and the light spot polarized and transmitted by the polarizer corresponding to the detector is detected by the detector on the corresponding path to obtain a measurement result; and determining and displaying the internal stress performance test result according to the measurement results corresponding to different detectors.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic screen manufacturing, and in particular to a method, device, medium and stress detector for testing internal stress performance of glass. Background Art

[0002] Glass internal stress refers to the internal stress distribution caused by factors such as temperature, pressure, and chemical reactions during the manufacturing or processing of glass products. The existence of internal stress has an important impact on the strength and durability of glass products, so the glass internal stress performance test method has become an important means to ensure the quality and durability of glass products. Traditional destructive testing can no longer meet the needs of non-destructive and high-precision testing. At present, although non-destructive testing technologies such as polarizing stress meter method and X-ray diffraction method have their own advantages, they still have problems such as complex operation or limited accuracy. Summary of the invention

[0003] The object of the present invention is to provide a glass internal stress performance testing method, device, medium and stress detector, aiming to reduce the operational complexity of glass internal stress performance testing and improve the accuracy of testing.

[0004] In order to achieve the above-mentioned purpose, a first aspect of an embodiment of the present disclosure provides a method for testing stress performance in glass, which is applied to a stress detector, wherein the stress detector includes a laser transmitter, a sample carrier, a beam splitter, polarizers with different polarization angles, and detectors used in conjunction with different polarization angles, and the method includes:

[0005] In response to the stress performance test operation on the sample glass, a scanning measurement setting interface is displayed, wherein the scanning measurement setting interface displays a plurality of scanning function options;

[0006] In response to a start scanning operation performed on the scanning measurement setting interface, a target parameter value set for each of the scanning function options on the scanning measurement setting interface is obtained, and a measurement mode for performing the glass internal stress scanning this time is determined according to a magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds;

[0007] According to the measurement mode and the target parameter values ​​set for each of the scanning function options, the laser emitter is controlled to emit laser light to the sample glass and the feeding movement of the sample glass is controlled, so that the laser light after passing through the sample glass is split into laser beams propagating along multiple paths by a beam splitter, and the light spot polarized and transmitted by the polarizer corresponding to the detector is detected by the detector on the corresponding path to obtain a measurement result;

[0008] According to the measurement results corresponding to the different detectors, the internal stress performance test results are determined, and the internal stress performance test results are displayed in a pre-selected display mode.

[0009] In a possible implementation, the stress detector further includes: a 45-degree polarizer and a PEM splitter, and the laser beam after passing through the sample glass is split by the beam splitter into a first laser beam propagating along a first path and a second laser beam propagating along a second path, including:

[0010] The laser light is passed through the first 45-degree sub-polarizer and the second 45-degree sub-polarizer from left to right in sequence through the 45-degree polarizer, and the hypotenuses of the first 45-degree sub-polarizer and the second 45-degree sub-polarizer overlap, so that the laser light is adjusted to be a laser light propagating vertically downward;

[0011] Phase modulating the laser light propagating vertically downward by the PEM splitter mirror to generate laser light of a specific frequency;

[0012] After the laser of the specific frequency is transmitted through the sample glass, it is irradiated onto the beam splitter from the transmission hole of the sample support table. The beam splitter splits the laser into the first laser beam propagating along the first path and the second laser beam propagating along the second path.

[0013] In a possible implementation, determining the measurement method for performing the glass internal stress scanning this time according to the magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds includes:

[0014] When the target parameter value of the measurement time in the scanning function option is less than or equal to the first preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform a first preset step length movement measurement for a preset scanning range;

[0015] When the target parameter value of the measurement time in the scanning function option is greater than the first preset time threshold, and the target parameter value is less than or equal to the second preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform the first preset step length movement measurement for the preset scanning range, and perform scanning interpolation during the measurement process;

[0016] When the target parameter value of the measurement time in the scanning function option is greater than the second preset time threshold, and the target parameter value is less than or equal to the third preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform the first preset step length moving measurement for the preset scanning range, and scanning interpolation is not performed during the measurement process;

[0017] When the target parameter value of the measurement time in the scanning function option is greater than the third preset time threshold and the target parameter value is less than or equal to the fourth preset time threshold, it is determined that the measurement method for performing the stress scanning in the glass this time is to perform a second preset step length moving measurement for a preset scanning range, and no scanning interpolation is performed during the measurement process, wherein the second preset step length is smaller than the first preset step length.

[0018] In a possible implementation, the stress detector is a gantry structure composed of a Y-axis driven by a central servo and two sets of X-axes driven by servos, wherein the two sets of X-axes are fixed as an integrated structure, and the movement of the sample glass during the performance test is performed by the Y-axis feeding motion. According to the measurement method and the target parameter value set for each scanning function option, the laser emitter is controlled to emit laser to the sample glass and the feeding motion of the sample glass is controlled, including:

[0019] According to the measurement mode and the target parameter values ​​set in each scanning function option, the instructions are sent to the laser transmitter to control the power, wavelength and polarization state of the laser emitted by the laser transmitter, and the emission position and angle of the laser are adjusted in real time according to the feeding movement of the sample glass;

[0020] Determine the measurement path and measurement speed for the sample glass according to the measurement mode, the target parameter values ​​set for the scan type setting option, the scan mode setting option, the scan position setting option and the step setting box in the scan function option, wherein the scan type setting option is used to determine the scan area range, and the scan mode setting option is used to determine the path shape;

[0021] According to the measuring path and the measuring speed, a feeding instruction is sent to the servo drive system to which the Y-axis belongs, so as to drive the sample glass to perform feeding movement in the Y-axis direction.

[0022] In a possible implementation, determining the measurement path and the measurement speed for the sample glass according to the measurement mode, the target parameter set in the scanning function option for the scanning type setting option, the scanning mode setting option, the scanning position setting option, and the step setting box includes:

[0023] Determine a scanning starting point and a scanning area range for the sample glass according to the target parameter values ​​for the scanning type setting option and the scanning position setting option in the scanning function option;

[0024] Determining the scanning starting point as the upper left corner position or the lower right corner position according to the scanning area range and the target parameter value of the scanning mode setting option;

[0025] According to the target parameter value of the scanning position setting option, the lower right corner position is determined by inputting the length and width at the upper left corner position, or the upper left corner position is determined by inputting the length and width at the lower right corner position, wherein the target parameter value of the scanning position setting option includes the length and the width;

[0026] Planning a measurement path for the sample glass according to the measurement mode, the target parameter value of the scanning mode setting option, the upper left corner position and the lower right corner position, wherein the measurement path includes a first measurement path for determining the lower right corner position by inputting the length and width at the upper left corner position or a second measurement path for determining the upper left corner position by inputting the length and width at the lower right corner position;

[0027] The measuring distance of this scanning is determined according to the measuring path, and the measuring speed for the sample glass is determined according to the measuring distance and the target parameter value set in the step setting box.

[0028] In a possible implementation, determining an internal stress performance test result according to the measurement results corresponding to different detectors, and displaying the internal stress performance test result in a pre-selected display mode includes:

[0029] Determine the phase difference between the laser beams propagating along different paths and the light intensity change of the laser beam propagating along each path according to the measurement results corresponding to the different detectors;

[0030] Determining stress values ​​at various points on the sample glass according to the change in the phase difference and the change in the light intensity;

[0031] Combine the stress values ​​of each point on the sample glass to generate the fast axis direction of the laser beam, and determine the internal stress performance test result according to the stress values ​​of each point and the fast axis direction;

[0032] The internal stress performance test result is displayed in at least one of the following display modes:

[0033] The stress value is indicated by color, and the fast axis direction is indicated by a straight line in two-dimensional coordinates;

[0034] The stress value is indicated by color, and the fast axis direction is indicated by the straight line direction in three-dimensional coordinates;

[0035] The diameter of the circle indicates the delay, and the direction of the fast axis is indicated by the straight line.

[0036] The diameter of the circle indicates the delay, and different colors are used to show positive and negative values.

[0037] In one possible implementation, the scanning measurement setting interface includes the following multiple scanning function options: scanning type setting option, scanning mode setting option, scanning position setting option, sample glass thickness value setting box, step setting box, offset interval time setting option, quick scanning option, offset remaining time display box, offset delay display box, and pause setting option.

[0038] According to a second aspect of the embodiments of the present disclosure, a glass internal stress performance testing device is provided, which is applied to a stress detector, wherein the stress detector includes a laser emitter, a sample carrier, a beam splitter, polarizers with different polarization angles, and detectors used in conjunction with different polarization angles. The device includes:

[0039] A first display module is configured to display a scanning measurement setting interface in response to a stress performance test operation on a sample glass, wherein the scanning measurement setting interface displays a plurality of scanning function options;

[0040] an acquisition module, configured to, in response to a start scanning operation executed on the scanning measurement setting interface, acquire a target parameter value set for each of the scanning function options on the scanning measurement setting interface, and determine a measurement method for performing the glass internal stress scanning this time according to a magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds;

[0041] The test module is configured to control the laser emitter to emit laser light to the sample glass and control the feeding movement of the sample glass according to the measurement mode and the target parameter value set for each scanning function option, so that the laser light after passing through the sample glass is split into laser beams propagating along multiple paths by a beam splitter, and the detector on the corresponding path detects the light spot after polarization transmission by the polarizer corresponding to the detector to obtain the measurement result;

[0042] The second display module is configured to determine an internal stress performance test result according to the measurement results corresponding to different detectors, and display the internal stress performance test result in a pre-selected display mode.

[0043] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of any one of the methods described in the first aspect are implemented.

[0044] A fourth aspect of the embodiments of the present disclosure provides a stress detector, including:

[0045] a memory having a computer program stored thereon;

[0046] A processor is used to execute the computer program in the memory to implement the steps of any one of the methods in the first aspect.

[0047] The present invention provides a method, device, medium and stress detector for testing the internal stress performance of glass. Compared with the prior art, it has the following beneficial effects:

[0048] Through the scanning measurement setting interface, multiple scanning function options can be freely selected and set, providing a high degree of flexibility, so that the test process can adapt to different types of sample glass and different test requirements. It can automatically determine the most appropriate measurement method based on the relationship between the measurement time target parameter set by the user and the preset time threshold, thereby improving the efficiency and accuracy of the test. The automated process reduces human intervention, reduces the risk of operating errors, and makes the test process more stable and reliable. Through the collaborative work of the laser transmitter, beam splitter, polarizer and detector, this method can achieve high-precision measurement of the internal stress of the sample glass. The splitting and polarization detection of the laser beam provide multi-path and multi-angle measurement data, which helps to understand the stress distribution in the sample glass more comprehensively. Reduce the operational complexity of the stress performance detection of the glass and improve the accuracy of the detection. In addition, through the automated and intelligent test process, the test time is significantly shortened and the test efficiency is improved. At the same time, due to the reduction of human intervention and waste of test materials, this method also helps to reduce the test cost.

[0049] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0051] Figure 1 It is a flow chart of a method for testing internal stress performance of glass according to an embodiment of the specification.

[0052] Figure 2 It is a structural schematic diagram of a stress detector according to an embodiment of the specification.

[0053] Figure 3 It is a schematic diagram of a scanning measurement setting interface shown in an embodiment of the specification.

[0054] Figure 4 It is a block diagram of a glass internal stress performance testing device shown in an embodiment of the specification.

[0055] Figure 5It is a block diagram of another glass internal stress performance testing device shown in an embodiment of the specification. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0058] The present disclosure provides a method for testing the internal stress performance of glass, which is applied to a stress detector, wherein the stress detector includes a laser transmitter, a sample carrier, a beam splitter, polarizers with different polarization angles, and a detector used in conjunction with different polarization angles, wherein the sample carrier is a platform for supporting and moving the sample glass, the beam splitter is used to split a laser beam into multiple laser beams propagating along different paths, and the polarizer is used to change the polarization state of the laser, allowing light in a specific polarization direction to pass through and blocking light in other directions. The detector is a device for receiving and measuring laser signals, converting optical signals into electrical signals or other measurable physical quantities. In the embodiment of the present disclosure, the sample glass can be, for example, the glass of a display screen of an intelligent electronic device, for example, the intelligent electronic device can be a smart phone, a tablet computer, a smart bracelet, a smart watch, etc. Figure 1 This is a flow chart of a method for testing internal stress performance of glass according to an embodiment. The method comprises:

[0059] In step S11, in response to the stress performance test operation on the sample glass, a scanning measurement setting interface is displayed, wherein the scanning measurement setting interface displays a plurality of scanning function options;

[0060] In the embodiment of the present disclosure, when the user responds to the stress performance test operation of the sample glass, the system will display a scanning measurement setting interface containing multiple scanning function options. These options generally include parameters such as measurement time, scanning speed, laser intensity, etc., which the user can set according to the test requirements.

[0061] For example, the user selects an interface with two options: "Fast Scan" and "High Precision Scan". In the "Fast Scan" mode, the measurement time is shorter, but the accuracy may be slightly lower; while in the "High Precision Scan" mode, the measurement time is longer, but more accurate results can be obtained.

[0062] In step S12, in response to the start scanning operation executed on the scanning measurement setting interface, the target parameter value set for each scanning function option on the scanning measurement setting interface is obtained, and according to the size relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds, the measurement mode of the glass internal stress scanning executed this time is determined;

[0063] In the disclosed embodiment, the measurement mode of the stress scan in the glass is automatically determined according to the relationship between the measurement time target parameter value set by the user on the scanning measurement setting interface and multiple preset time thresholds. If the target parameter value is less than a preset time threshold, the fast scanning mode is selected; if it is greater than or equal to the threshold, the high-precision scanning mode is selected.

[0064] For example: Assume that the user sets the measurement time to 10 seconds, and the preset time threshold is 15 seconds. Since 10 seconds is less than 15 seconds, the system will select the fast scan mode.

[0065] In step S13, according to the measurement mode and the target parameter value set for each scanning function option, the laser emitter is controlled to emit laser light to the sample glass and the feeding movement of the sample glass is controlled, so that the laser light after passing through the sample glass is split into laser beams propagating along multiple paths by a beam splitter, and the light spot polarized and transmitted by the polarizer corresponding to the detector is detected by the detector on the corresponding path to obtain a measurement result;

[0066] In the disclosed embodiment, according to the determined measurement mode and the target parameter value of the scanning function option set by the user, the system controls the laser emitter to emit laser light to the sample glass, and controls the sample carrier to make the sample glass feed. After the laser beam passes through the sample glass, it is split by the beam splitter into multiple beams propagating along different paths. After these beams are polarized by the polarizer on the corresponding path, they are received by the detector and the light spot is detected, thereby obtaining the measurement result.

[0067] For example: In fast scanning mode, the laser emitter emits laser light at a higher frequency, and the sample stage moves the sample glass at a faster speed. Figure 2 As shown, after the laser beam passes through the sample glass, it is split into two beams propagating along different paths. After being polarized by 0° and -45° polarizers respectively, they are received by two detectors and the spot intensity is detected.

[0068] The 0° polarizer is located at an angle of 45° to the beam splitter, and is a polarizer that only allows the light vector to vibrate in a specific direction (such as the 0° direction). When a beam of light passes through the 0° polarizer, only the light vector component parallel to the 0° direction can pass through, while the light vector component perpendicular to the 0° direction is blocked or absorbed. Therefore, the 0° polarizer can convert incident unpolarized light or elliptically polarized light into linearly polarized light, and the vibration direction of the linearly polarized light is consistent with the transmission direction of the 0° polarizer.

[0069] The -45° polarizer is located below the beam splitter, allowing the component of the light vector vibrating in the -45° direction (i.e., the direction at a 45° angle to the 0° direction) to pass through, while the light vector component perpendicular to the -45° direction is blocked or absorbed. When a beam of light passes through the -45° polarizer, only the light vector component parallel to the -45° direction can pass through, forming linearly polarized light. By setting the relative position and angle of the two polarizers, when measuring the stress distribution of the sample, the 0° polarizer can be used as a polarizer to convert the incident light into linearly polarized light; then the -45° polarizer can be used as an analyzer to detect the change in the polarization state of the light vector after passing through the sample. By measuring and analyzing these changes, information such as the stress distribution and performance parameters of the sample can be inferred.

[0070] In step S14, an internal stress performance test result is determined according to the measurement results corresponding to different detectors, and the internal stress performance test result is displayed in a pre-selected display mode.

[0071] In the disclosed embodiment, the internal stress distribution or magnitude is calculated using a specific algorithm based on the measurement results corresponding to different detectors, and the internal stress performance test results are displayed in a pre-selected display mode. Common display modes include graphical display (such as stress distribution diagram), numerical display, etc.

[0072] For example: Assuming that the spot intensities detected by the two detectors are I1 and I2, the stress distribution in the sample glass is calculated based on these two values ​​and the polarization angle of the polarizer using the principle of photoelastic effect. Then, the system displays this information on the screen in the form of a stress distribution diagram, and the user can directly observe the stress distribution in the sample glass.

[0073] Among them, the stress detector can be connected to the MES system via Ethernet and automatically upload detection data and reports according to the requirements of the MES system.

[0074] The above technical solution can freely select and set multiple scanning function options through the scanning measurement setting interface, providing a high degree of flexibility, so that the test process can adapt to different types of sample glass and different test requirements. It can automatically determine the most suitable measurement method according to the relationship between the measurement time target parameter set by the user and the preset time threshold, thereby improving the efficiency and accuracy of the test. The automated process reduces human intervention, reduces the risk of operating errors, and makes the test process more stable and reliable. Through the coordinated work of the laser transmitter, beam splitter, polarizer and detector, the method can achieve high-precision measurement of the internal stress of the sample glass. The splitting and polarization detection of the laser beam provide multi-path and multi-angle measurement data, which helps to understand the stress distribution in the sample glass more comprehensively. Reduce the operational complexity of the stress performance detection of the glass and improve the accuracy of the detection. In addition, through the automated and intelligent test process, the test time is significantly shortened and the test efficiency is improved. At the same time, due to the reduction of human intervention and waste of test materials, the method also helps to reduce the test cost.

[0075] In one possible implementation, see Figure 2 As shown, the stress detector further includes: a 45-degree polarizer and a PEM splitter, wherein the 45-degree polarizer is on the top and the PEM splitter is on the bottom and is sequentially arranged between the laser emitter and the sample carrier, and in step S13, the laser after transmitting through the sample glass is split by the beam splitter into a first laser beam propagating along a first path and a second laser beam propagating along a second path, including:

[0076] In step S131, the laser is passed through the first 45-degree sub-polarizer and the second 45-degree sub-polarizer from left to right in sequence through the 45-degree polarizer, the hypotenuse of the first 45-degree sub-polarizer and the second 45-degree sub-polarizer coincides, and the laser is adjusted to be a laser that propagates vertically downward;

[0077] The 45-degree polarizer is used to adjust the polarization direction of the incident light to be at a 45-degree angle to the surface of the element. In this technology, the 45-degree polarizer is composed of two sub-polarizers, which adjust the polarization direction of the laser to ensure that the laser can propagate along the predetermined path.

[0078] In the disclosed embodiment, the laser first passes through the first 45-degree sub-polarizer, and its polarization direction is adjusted to form a 45-degree angle with the hypotenuse of the first 45-degree sub-polarizer. Then, the laser continues to pass through the second 45-degree sub-polarizer, and because the hypotenuses of the two sub-polarizers coincide, the polarization direction of the laser is further adjusted, and finally a laser propagating vertically downward is obtained.

[0079] For example: Assuming that the initial polarization direction of the laser is vertical, after passing through the first 45-degree sub-polarizer, the polarization direction becomes 45 degrees to the horizontal direction. Then, after passing through the second 45-degree sub-polarizer, the polarization direction is adjusted again, and finally a vertically downward polarized laser is obtained. Thus, the laser whose initial polarization direction is not vertical is polarized to vertically downward.

[0080] In step S132, phase modulation is performed on the laser light propagating vertically downward by the PEM splitter mirror to generate laser light of a specific frequency;

[0081] Among them, the PEM (Photoelastic Modulator) splitter is used to phase modulate the laser and generate lasers of a specific frequency. The PEM splitter can change the polarization state of the laser, thereby achieving splitting and phase modulation of the laser.

[0082] In the disclosed embodiment, the PEM splitter uses the photoelastic effect to phase modulate the laser. When the laser passes through the PEM splitter, its polarization state changes, causing the phase of the laser to be modulated, thereby generating a laser with a specific frequency.

[0083] For example: Assume that the initial frequency of the laser is f0. After being modulated by the PEM splitter mirror, the frequency of the laser becomes f0+Δf, where Δf is the modulation frequency introduced by the PEM splitter mirror.

[0084] In step S133, after the laser of the specific frequency is transmitted through the sample glass, it is irradiated onto the beam splitter from the transmission hole of the sample carrier, and the beam splitter splits the laser into the first laser beam propagating along the first path and the second laser beam propagating along the second path.

[0085] The beam splitter can split a beam of light into multiple beams of light. In the present technology, the beam splitter is used to split the laser modulated by the PEM splitter into a first laser beam and a second laser beam propagating along different paths.

[0086] In the disclosed embodiment, the laser light modulated by the PEM splitter is transmitted through the sample glass and irradiated on the beam splitter from the transmission hole of the sample support. The beam splitter splits the laser light into a first laser beam propagating along a first path and a second laser beam propagating along a second path. The polarization states and phases of the two laser beams may change due to the internal stress of the sample glass.

[0087] For example: Assume that after the laser passes through the sample glass, its polarization state and phase change due to the stress in the sample glass. When the laser is irradiated on the beam splitter, it is split into two laser beams with different polarization states and phases, which propagate along the first path and the second path respectively.

[0088] In this way, through the coordinated work of the 45-degree polarizer, PEM splitter and beam splitter, this technology achieves high-precision measurement of the internal stress of the sample glass. After the laser is adjusted in polarization direction by the 45-degree polarizer, it is phase modulated by the PEM splitter, then transmitted through the sample glass and split into two laser beams. The polarization state and phase change of these two laser beams reflect the stress distribution in the sample glass. Through subsequent detection and analysis, the internal stress performance test results of the sample glass can be obtained.

[0089] In a possible implementation, in step S12, determining the measurement method for performing the glass internal stress scanning this time according to the magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds includes:

[0090] When the target parameter value of the measurement time in the scanning function option is less than or equal to the first preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform a first preset step length movement measurement for a preset scanning range;

[0091] The target parameter value of the measurement time is set by the user or the system, and is the target time value required to complete the entire measurement during the stress scanning process in the glass. The preset time threshold is to optimize the measurement efficiency and accuracy. The system presets multiple time limit values ​​to determine the range to which the target parameter value of the measurement time belongs, thereby determining which measurement method to use. The first preset step length mobile measurement is used to perform mobile measurement with a larger step length (first preset step length) within the preset scanning range to obtain data at a faster speed.

[0092] In the disclosed embodiment, the target parameter value of the measurement time is first compared with the first preset time threshold. If the target parameter value is less than or equal to the first preset time threshold, it means that the user has a higher requirement for the measurement speed, and the system should select a faster measurement method.

[0093] For example, assuming that the first preset time threshold is 2 seconds and the user sets the measurement time target parameter to 2 seconds, the system selects to perform the first preset step length movement measurement for the preset scanning range to complete the measurement at a faster speed.

[0094] When the target parameter value of the measurement time in the scanning function option is greater than the first preset time threshold, and the target parameter value is less than or equal to the second preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform the first preset step length movement measurement for the preset scanning range, and perform scanning interpolation during the measurement process;

[0095] Among them, scan interpolation is to insert additional estimated values ​​between measured data points to increase data density and improve the smoothness and accuracy of measurement results.

[0096] In the disclosed embodiment, if the target parameter is greater than the first preset time threshold and less than or equal to the second preset time threshold, the system will select a faster measurement method (first preset step size moving measurement) and perform scanning interpolation to improve the smoothness and accuracy of the measurement results.

[0097] For example, if the second preset time threshold is 5 minutes and the user sets the measurement time target parameter to 3 minutes, the system will select to perform the first preset step length movement measurement for the preset scanning range and perform scanning interpolation during the measurement process to obtain smoother measurement results in a shorter time.

[0098] When the target parameter value of the measurement time in the scanning function option is greater than the second preset time threshold, and the target parameter value is less than or equal to the third preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform the first preset step length moving measurement for the preset scanning range, and scanning interpolation is not performed during the measurement process;

[0099] In the disclosed embodiment, if the target parameter is greater than the second preset time threshold and less than or equal to the third preset time threshold, the system still selects a faster measurement method (first preset step size moving measurement), but does not perform scanning interpolation to save computing resources.

[0100] For example, assuming that the third preset time threshold is 10 minutes and the user sets the measurement time target parameter to 8 minutes, the system selects to perform the first preset step length movement measurement for the preset scanning range, but does not perform scanning interpolation, so as to complete the measurement in a shorter time and save computing resources.

[0101] When the target parameter value of the measurement time in the scanning function option is greater than the third preset time threshold and the target parameter value is less than or equal to the fourth preset time threshold, it is determined that the measurement method for performing the stress scanning in the glass this time is to perform a second preset step length moving measurement for a preset scanning range, and no scanning interpolation is performed during the measurement process, wherein the second preset step length is smaller than the first preset step length.

[0102] The second preset step length mobile measurement is to perform mobile measurement with a smaller step length (the second preset step length) within the preset scanning range, so as to acquire data in a more refined manner and improve measurement accuracy.

[0103] In the embodiment of the present disclosure, if the target parameter value is greater than the third preset time threshold and less than or equal to the fourth preset time threshold, the system selects a more refined measurement method (second preset step length moving measurement) to obtain data with higher accuracy. Since the step length is small and the measurement time is relatively long, scanning interpolation is not performed to save computing resources.

[0104] For example: Assume that the fourth preset time threshold is 30 minutes, and the user sets the measurement time target parameter to 25 minutes. At this time, the system selects to perform the second preset step length movement measurement (the step length is smaller than the first preset step length) for the preset scanning range, acquires data with higher accuracy, and does not perform scanning interpolation during the measurement process, so as to complete high-precision measurement in a longer time.

[0105] For example, for a scanning range of 800X800mm, if the target parameter value of the measurement time is <=2 seconds, then the measurement method for performing the stress scan in the glass this time is determined to be to move 50mm to measure a point for the preset scanning range; if the target parameter value of the measurement time is <=5 minutes, then the measurement method for performing the stress scan in the glass this time is determined to be to perform a measurement with a spacing of 50mm for the preset scanning range, and to perform scanning interpolation during the measurement process; if the target parameter value of the measurement time is <=10 minutes, then the measurement method for performing the stress scan in the glass this time is determined to be to perform a measurement with a spacing of 50mm for the preset scanning range, and to not perform scanning interpolation during the measurement process; if the target parameter value of the measurement time is <=30 minutes, then the measurement method for performing the stress scan in the glass this time is determined to be to perform a measurement with a spacing of 25mm for the preset scanning range, and to not perform scanning interpolation during the measurement process.

[0106] In this way, according to the size relationship between the target parameter value of the measurement time and multiple preset time thresholds, the most appropriate measurement method is intelligently selected to balance the measurement speed and accuracy to meet the different needs of users.

[0107] In one possible implementation, the stress detector is composed of a Y-axis driven by a central servo and two sets of X-axes driven by servos, forming a gantry structure, wherein the two sets of X-axes are fixed as an integrated structure, and the movement of the sample glass during the performance test is performed by the Y-axis feeding motion, wherein the gantry structure is composed of two parallel vertical support columns (equivalent to the columns of the gantry frame) and a horizontal beam spanning the two columns (equivalent to the beam of the gantry frame), forming a stable frame. In this technology, the gantry structure is composed of a Y-axis and two sets of fixed X-axes, which are used to support and move the laser emitter and the sample glass.

[0108] Servo drives are used to precisely control the position, velocity, and acceleration of mechanical parts. In this technology, servo drive systems are used to control the movement of the Y-axis and X-axis. Feed motion is used to continuously move the sample glass and the laser emitter relative to each other during performance testing. In this technology, feed motion refers to the movement of the sample glass in the Y-axis direction.

[0109] In step S13, according to the measurement mode and the target parameter values ​​set for each scanning function option, controlling the laser emitter to emit laser to the sample glass and controlling the feeding movement of the sample glass includes:

[0110] According to the measurement mode and the target parameter values ​​set in each scanning function option, the instructions are sent to the laser transmitter to control the power, wavelength and polarization state of the laser emitted by the laser transmitter, and the emission position and angle of the laser are adjusted in real time according to the feeding movement of the sample glass;

[0111] In the disclosed embodiment, according to the target parameter values ​​set by the measurement mode and scanning function options, the system sends instructions to the laser emitter to control the power, wavelength and polarization state of the laser. The selection of these parameters has an important impact on the measurement results. For example, different wavelengths may be more sensitive to different stress components in the sample glass. At the same time, the system adjusts the emission position and angle of the laser in real time according to the feeding movement of the sample glass to ensure that the laser is always accurately irradiated on the predetermined measurement point.

[0112] For example: Assume that the system selects the method of performing the first preset step length movement measurement for the preset scanning range and sets a higher measurement accuracy requirement. At this time, the system may select a lower laser power and a longer wavelength to reduce the potential damage of the laser to the sample glass and increase the measurement depth. At the same time, as the sample glass feeds in the Y-axis direction, the system adjusts the laser emission position and angle in real time to ensure that the laser always moves along the predetermined measurement path.

[0113] The wavelength of the laser is 633 nm, the spot size is ≤1 mm in diameter, the angle resolution is ≤0.01°, and the repeatability is ≤±0.05° (normal value under 5 nm delay).

[0114] Determine the measurement path and measurement speed for the sample glass according to the measurement mode, the target parameter values ​​set for the scan type setting option, the scan mode setting option, the scan position setting option and the step setting box in the scan function option, wherein the scan type setting option is used to determine the scan area range, and the scan mode setting option is used to determine the path shape;

[0115] In the disclosed embodiment, the measurement path and measurement speed for the sample glass are determined according to the target parameter values ​​set in the measurement mode, scanning type setting option, scanning mode setting option, scanning position setting option and step setting box. The measurement path determines the moving track of the laser on the sample glass, while the measurement speed affects the time efficiency and accuracy of the measurement.

[0116] For example, if the system selects a rectangular scanning area and a unidirectional scanning mode and sets a small step size, the system may determine a continuous measurement path along the edge of the rectangle and scan at a slower measurement speed to ensure that enough data points are obtained at each measurement point, thereby improving measurement accuracy.

[0117] According to the measuring path and the measuring speed, a feeding instruction is sent to the servo drive system to which the Y-axis belongs, so as to drive the sample glass to perform feeding movement in the Y-axis direction.

[0118] In the embodiment of the present disclosure, according to the measurement path and the measurement speed, the system sends a feeding instruction to the servo drive system to which the Y-axis belongs, so as to drive the sample glass to perform feeding movement in the Y-axis direction. The servo drive system accurately controls the moving speed and position of the Y-axis according to the received instruction, thereby realizing accurate feeding of the sample glass.

[0119] For example: Assume that the system has determined the measurement path and measurement speed, and is ready to start scanning. At this time, the system sends a feed instruction to the servo drive system to which the Y-axis belongs, instructing the Y-axis to move along the measurement path at a predetermined speed. After receiving the instruction, the servo drive system starts to drive the Y-axis to move, and at the same time feeds back the actual position and speed information to the system to ensure the accuracy and stability of the feed motion. As the Y-axis moves, the laser transmitter continues to emit laser light to the sample glass and collects the reflected laser signal for subsequent internal stress analysis.

[0120] In addition, in the disclosed embodiment, a dedicated control system for a three-dimensional coordinate measuring machine is adopted, and a dual computer control system of an upper and lower computer type is adopted to realize real-time control. The upper and lower computers communicate in real time, and the system has strong anti-interference ability. The built-in control technology can control the rotating worktable to realize four-axis servo drive. The motion state control software is adopted to automatically optimize and adjust the servo motion parameters. The graphic trajectory display debugging software is adopted to realize intelligent scanning control, and automatic scanning control of space contour curves and surfaces is performed.

[0121] In summary, the stress detector achieves high-precision measurement of the internal stress of the sample glass by precisely controlling the parameters of the laser emitter, determining the measurement path and measurement speed, and controlling the feeding movement of the sample glass.

[0122] In a possible implementation, determining the measurement path and the measurement speed for the sample glass according to the measurement mode, the target parameter set in the scanning function option for the scanning type setting option, the scanning mode setting option, the scanning position setting option, and the step setting box includes:

[0123] Determine a scanning starting point and a scanning area range for the sample glass according to the target parameter values ​​for the scanning type setting option and the scanning position setting option in the scanning function option;

[0124] The scanning starting point is the starting position of the scanning process, that is, the first point where the laser emitter starts to irradiate the sample glass. The scanning area range can be a rectangular area determined by the scanning starting point and the scanning size (length and width), which is the target area for the laser emitter to scan.

[0125] In the disclosed embodiment, the system determines the starting point of the scan and the range of the scan area according to the target parameter values ​​of the scan type setting options (such as rectangular scan, circular scan, etc.) and the scan position setting options in the scan function options. The scan type determines the shape of the scan area, while the length and width in the scan position setting options determine the specific size of the scan area.

[0126] For example: Assume that the user selects the rectangular scan type and enters the dimensions of 100 mm in length and 50 mm in width in the scan position setting option. Based on this information, the system determines the scan starting point (such as the upper left corner or lower right corner) and the scan area range as a rectangle of 100 mm × 50 mm.

[0127] Determining the scanning starting point as the upper left corner position or the lower right corner position according to the scanning area range and the target parameter value of the scanning mode setting option;

[0128] In the disclosed embodiment, the system determines whether the scanning starting point is the upper left corner or the lower right corner according to the scanning area range and the target parameter value of the scanning mode setting option. This depends on the specific requirements of the scanning mode, such as some modes may start from the upper left corner, while other modes may start from the lower right corner.

[0129] For example: Assume that the user selects the unidirectional scanning mode and specifies the scanning starting point as the upper left corner. The system determines that the scanning will start from the upper left corner of the rectangle and move to the lower right along the predetermined path.

[0130] According to the target parameter value of the scanning position setting option, the lower right corner position is determined by inputting the length and width at the upper left corner position, or the upper left corner position is determined by inputting the length and width at the lower right corner position, wherein the target parameter value of the scanning position setting option includes the length and the width;

[0131] In the embodiment of the present disclosure, according to the target parameter values ​​(length and width) of the scanning position setting option, the system can input the length and width of the upper left corner to determine the lower right corner position, or input the length and width of the lower right corner to determine the upper left corner position. This depends on the specific input method of the user.

[0132] For example, if the user starts at the upper left corner and enters a length of 100 mm and a width of 50 mm, the system can determine that the lower right corner is located at (100 mm, 50 mm). Conversely, if the user starts at the lower right corner and enters the same dimensions, the system can determine that the upper left corner is located at (0 mm, 0 mm) and adjust the measurement path accordingly.

[0133] Planning a measurement path for the sample glass according to the measurement mode, the target parameter value of the scanning mode setting option, the upper left corner position and the lower right corner position, wherein the measurement path includes a first measurement path for determining the lower right corner position by inputting the length and width at the upper left corner position or a second measurement path for determining the upper left corner position by inputting the length and width at the lower right corner position;

[0134] In the disclosed embodiment, the system plans a measurement path for the sample glass according to the measurement mode, target parameter values ​​of the scanning mode setting options, the upper left corner position and the lower right corner position. The measurement path can be a straight line, a curve or a more complex shape, depending on the specific requirements of the scanning mode.

[0135] For example: Assume that the user selects the unidirectional scanning mode, and starts from the upper left corner and ends at the lower right corner. The system plans a measurement path starting from the upper left corner and moving straight to the lower right corner. If the bidirectional scanning mode is selected, the path may include a round trip from the upper left corner to the lower right corner, and then from the lower right corner back to the upper left corner.

[0136] The measuring distance of this scanning is determined according to the measuring path, and the measuring speed for the sample glass is determined according to the measuring distance and the target parameter value set in the step setting box.

[0137] In the disclosed embodiment, the measurement distance of this scan is determined according to the measurement path, and the system determines the measurement speed for the sample glass according to the target parameter value (such as the distance moved per step) set in the measurement distance and step setting box. The selection of the measurement speed should ensure that the laser transmitter can complete the entire scanning area within the specified time while maintaining sufficient measurement accuracy.

[0138] For example: Assume the total length of the measurement path is 500 mm and the target parameter set in the step setting box is 1 mm / step. The system calculates that 500 steps are required to complete the entire scan area. If the user wants the scan process to be completed within 10 seconds, the system can determine the measurement speed to be 50 mm / second (500 mm / 10 seconds).

[0139] In summary, the measurement path and speed for the sample glass are precisely planned based on the scanning function options and measurement methods set by the user. These steps and calculations ensure the accuracy and efficiency of the scanning process.

[0140] In a possible implementation, determining an internal stress performance test result according to the measurement results corresponding to different detectors, and displaying the internal stress performance test result in a pre-selected display mode includes:

[0141] Determine the phase difference between the laser beams propagating along different paths and the light intensity change of the laser beam propagating along each path according to the measurement results corresponding to the different detectors;

[0142] The phase difference is the phase difference caused by the optical path difference or the refractive index difference of the medium when two or more light waves meet. In this technology, the phase difference is used to reflect the phase change caused by stress when the laser beam propagates in the sample glass.

[0143] Light intensity variation refers to the change in the amplitude (or intensity) of light waves during propagation due to factors such as medium absorption, scattering, and reflection. In this technology, light intensity variation can be used to assist in analyzing the stress distribution in the sample glass.

[0144] In the disclosed embodiment, different detectors are used to receive reflected or transmitted laser beams from the sample glass, and the phase difference between the laser beams and the light intensity change of the laser beam propagated along each path are measured. These measurement data reflect the stress state at different points in the sample glass.

[0145] For example, suppose the system uses two detectors to receive laser beams from two different paths of the sample glass. By comparing the phase difference and light intensity changes of the two laser beams, the system can infer the stress state of a certain point in the sample glass.

[0146] Determining stress values ​​at various points on the sample glass according to the change in the phase difference and the change in the light intensity;

[0147] In the disclosed embodiment, according to the change of phase difference and light intensity, the stress value of each point on the sample glass is calculated by using known physical formulas or algorithms. These stress values ​​reflect the stress distribution in the sample glass.

[0148] For example: the system calculates the stress value of a certain point on the sample glass by measuring the phase difference and light intensity change data, using the stress-phase difference relationship or related algorithms.

[0149] Combine the stress values ​​of each point on the sample glass to generate the fast axis direction of the laser beam, and determine the internal stress performance test result according to the stress values ​​of each point and the fast axis direction;

[0150] In birefringent materials, light waves are decomposed into two polarized lights with different vibration directions, and the vibration direction of the polarized light with a faster propagation speed is called the fast axis direction. In this technology, the fast axis direction is used to indicate the main direction of stress in the sample glass.

[0151] In the disclosed embodiment, the fast axis direction of the laser beam is generated by combining the stress values ​​of each point on the sample glass and using the birefringence principle or related algorithms. Then, the system comprehensively determines the internal stress performance test results based on the stress values ​​of each point and the fast axis direction.

[0152] For example: The system can draw a stress distribution diagram in the sample glass by calculating the stress values ​​and fast axis direction data of each point. This diagram shows the direction and size distribution of stress in the sample glass, thus helping users understand the internal stress performance of the sample glass.

[0153] Among them, the internal stress performance test results can be displayed in different forms according to the display mode pre-selected by the user. These display modes include color indicating the magnitude of stress value, straight line direction indicating the fast axis direction, circle diameter indicating the magnitude of delay, etc. Combining different display modes, the internal stress performance test results of the sample glass can be accurately and intuitively displayed.

[0154] The internal stress performance test result is displayed in at least one of the following display modes:

[0155] The stress value is indicated by color, and the fast axis direction is indicated by a straight line in two-dimensional coordinates;

[0156] The stress value is indicated by color, and the fast axis direction is indicated by the straight line direction in three-dimensional coordinates;

[0157] The diameter of the circle indicates the delay, and the direction of the fast axis is indicated by the straight line.

[0158] Retardation is the phase difference between the two polarized light components after the light wave passes through the birefringent material. Retardation is related to the birefringence index of the material and the propagation distance of the light wave, and can be used to quantify the stress in the sample glass.

[0159] The delay measurement range is 0 to 120 nm; the resolution is ≤0.001 nm; and the repeatability is ±0.01 nm (delay <1 nm) or ± 1% (delay >1 nm).

[0160] The diameter of the circle indicates the delay, and different colors are used to show positive and negative values.

[0161] In the disclosed embodiment, Excel reports, original measurement reports, 3D / 2D graphs within the measurement range, and 3D / 2D graphs of optional areas can be automatically generated and exported. The maximum value, minimum value, range, and corresponding coordinate positions are displayed in the 3D or 2D graphs.

[0162] In addition, the above four display modes can be selected separately in the operation interface, and the number of points / percentage, maximum value (with XY coordinates), minimum value (with XY coordinates), average value and 3σ value of each interval can be displayed on the same interface; the stress magnitude value should be able to be displayed in MPa, nm, Psi and can be selected separately; the data is exported as a .dat file, which can be directly opened with Excel software.

[0163] In one possible implementation, the scanning measurement setting interface includes the following multiple scanning function options: scanning type setting option, scanning mode setting option, scanning position setting option, sample glass thickness value setting box, step setting box, offset interval time setting option, quick scanning option, offset remaining time display box, offset delay display box, and pause setting option.

[0164] See also Figure 3 The scanning measurement setting interface shown in the figure shows that the scanning type setting option refers to the scanning shape or mode that the user can select, such as rectangular scanning, circular scanning, linear scanning, etc. These scanning types determine the movement path and coverage area of ​​the laser beam on the sample glass.

[0165] The scanning mode setting option refers to the scanning working mode that the user can choose, such as unidirectional scanning, bidirectional scanning, spiral scanning, sawtooth scanning, etc. The scanning mode determines the direction and number of times the laser beam moves within the scanning area.

[0166] The Scan Position Setting option allows the user to specify the starting position of the scan, the size of the scan area (such as length, width), and the scan direction (such as from left to right, from top to bottom, etc.). These are key parameters for defining the scan area and path.

[0167] The sample glass thickness value setting box is used to input or select the thickness value of the sample glass to be measured. This information is essential for calculating the propagation path of the laser beam in the sample glass, adjusting the measurement parameters, and correcting the measurement results.

[0168] The step setting box refers to the distance or step length that the laser beam moves along the scanning path each time it moves. The size of the step directly affects the resolution and measurement accuracy of the scan.

[0169] The offset interval setting option refers to the time interval that the laser beam pauses between two consecutive scans. This parameter is used to control the scan rate to prevent the laser beam from overheating or damaging the sample glass, and also helps to improve measurement stability.

[0170] Fast Scan Option An optional feature to enable or disable Fast Scan Mode. In Fast Scan Mode, the laser beam moves at a higher speed, which reduces scan time but may sacrifice some measurement accuracy.

[0171] The Offset Remaining Time display box shows the remaining time the laser beam needs to wait before reaching the next scanning position in the current scanning cycle. This information helps the user monitor the scanning progress and adjust the scanning parameters.

[0172] The offset delay display box shows the delay time that the laser beam experiences before starting the next scanning cycle. This parameter is related to the offset interval time, but focuses more on the scheduling and control of the entire scanning cycle.

[0173] The Pause setting option allows the user to manually pause or continue the scanning process. This option provides flexible scanning control, enabling users to interrupt scanning when needed to perform other operations or inspections.

[0174] These scanning function options together constitute the scanning measurement setting interface, which enables users to flexibly configure scanning parameters according to specific measurement requirements and sample characteristics to obtain accurate and reliable measurement results.

[0175] The present disclosure also provides a glass internal stress performance testing device, which is applied to a stress detector, wherein the stress detector includes a laser emitter, a sample carrier, a beam splitter, polarizers with different polarization angles, and detectors used in conjunction with different polarization angles, see Figure 4 As shown, the device comprises:

[0176] The first display module 410 is configured to display a scanning measurement setting interface in response to a stress performance test operation on a sample glass, wherein the scanning measurement setting interface displays a plurality of scanning function options;

[0177] The acquisition module 420 is configured to, in response to a start scanning operation executed on the scanning measurement setting interface, acquire a target parameter value set for each of the scanning function options on the scanning measurement setting interface, and determine a measurement method for performing the glass internal stress scanning this time according to a magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds;

[0178] The test module 430 is configured to control the laser emitter to emit laser light to the sample glass and control the feeding movement of the sample glass according to the measurement mode and the target parameter value set for each scanning function option, so that the laser light after passing through the sample glass is split into laser beams propagating along multiple paths by a beam splitter, and the detector on the corresponding path detects the light spot after polarization transmission by the polarizer corresponding to the detector to obtain a measurement result;

[0179] The second display module 440 is configured to determine an internal stress performance test result according to the measurement results corresponding to different detectors, and display the internal stress performance test result in a pre-selected display mode.

[0180] In a possible implementation, the stress detector further includes: a 45-degree polarizer and a PEM splitter, and the test module 430 is configured as follows:

[0181] The laser light is passed through the first 45-degree sub-polarizer and the second 45-degree sub-polarizer from left to right in sequence through the 45-degree polarizer, and the hypotenuses of the first 45-degree sub-polarizer and the second 45-degree sub-polarizer overlap, so that the laser light is adjusted to be a laser light propagating vertically downward;

[0182] Phase modulating the laser light propagating vertically downward by the PEM splitter mirror to generate laser light of a specific frequency;

[0183] After the laser of the specific frequency is transmitted through the sample glass, it is irradiated onto the beam splitter from the transmission hole of the sample support table. The beam splitter splits the laser into the first laser beam propagating along the first path and the second laser beam propagating along the second path.

[0184] In a possible implementation, the acquisition module 420 is configured to:

[0185] When the target parameter value of the measurement time in the scanning function option is less than or equal to the first preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform a first preset step length movement measurement for a preset scanning range;

[0186] When the target parameter value of the measurement time in the scanning function option is greater than the first preset time threshold, and the target parameter value is less than or equal to the second preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform the first preset step length movement measurement for the preset scanning range, and perform scanning interpolation during the measurement process;

[0187] When the target parameter value of the measurement time in the scanning function option is greater than the second preset time threshold, and the target parameter value is less than or equal to the third preset time threshold, determining that the measurement method for performing the glass internal stress scanning this time is to perform the first preset step length moving measurement for the preset scanning range, and scanning interpolation is not performed during the measurement process;

[0188] When the target parameter value of the measurement time in the scanning function option is greater than the third preset time threshold and the target parameter value is less than or equal to the fourth preset time threshold, it is determined that the measurement method for performing the stress scanning in the glass this time is to perform a second preset step length moving measurement for a preset scanning range, and no scanning interpolation is performed during the measurement process, wherein the second preset step length is smaller than the first preset step length.

[0189] In a possible implementation, the stress detector is a gantry structure consisting of a Y-axis driven by a central servo and two sets of X-axes driven by servos, wherein the two sets of X-axes are fixed as an integrated structure, and the movement of the sample glass during the performance test is performed by the Y-axis feeding motion. The test module 430 is configured as follows:

[0190] According to the measurement mode and the target parameter values ​​set in each scanning function option, the instructions are sent to the laser transmitter to control the power, wavelength and polarization state of the laser emitted by the laser transmitter, and the emission position and angle of the laser are adjusted in real time according to the feeding movement of the sample glass;

[0191] Determine the measurement path and measurement speed for the sample glass according to the measurement mode, the target parameter values ​​set for the scan type setting option, the scan mode setting option, the scan position setting option and the step setting box in the scan function option, wherein the scan type setting option is used to determine the scan area range, and the scan mode setting option is used to determine the path shape;

[0192] According to the measuring path and the measuring speed, a feeding instruction is sent to the servo drive system to which the Y-axis belongs, so as to drive the sample glass to perform feeding movement in the Y-axis direction.

[0193] In a possible implementation, the testing module 430 is configured as follows:

[0194] Determine a scanning starting point and a scanning area range for the sample glass according to the target parameter values ​​for the scanning type setting option and the scanning position setting option in the scanning function option;

[0195] Determining the scanning starting point as the upper left corner position or the lower right corner position according to the scanning area range and the target parameter value of the scanning mode setting option;

[0196] According to the target parameter value of the scanning position setting option, the lower right corner position is determined by inputting the length and width at the upper left corner position, or the upper left corner position is determined by inputting the length and width at the lower right corner position, wherein the target parameter value of the scanning position setting option includes the length and the width;

[0197] Planning a measurement path for the sample glass according to the measurement mode, the target parameter value of the scanning mode setting option, the upper left corner position and the lower right corner position, wherein the measurement path includes a first measurement path for determining the lower right corner position by inputting the length and width at the upper left corner position or a second measurement path for determining the upper left corner position by inputting the length and width at the lower right corner position;

[0198] The measuring distance of this scanning is determined according to the measuring path, and the measuring speed for the sample glass is determined according to the measuring distance and the target parameter value set in the step setting box.

[0199] In a possible implementation, the second display module 440 is configured as follows:

[0200] Determine the phase difference between the laser beams propagating along different paths and the light intensity change of the laser beam propagating along each path according to the measurement results corresponding to the different detectors;

[0201] Determining stress values ​​at various points on the sample glass according to the change in the phase difference and the change in the light intensity;

[0202] Combine the stress values ​​of each point on the sample glass to generate the fast axis direction of the laser beam, and determine the internal stress performance test result according to the stress values ​​of each point and the fast axis direction;

[0203] The internal stress performance test result is displayed in at least one of the following display modes:

[0204] The stress value is indicated by color, and the fast axis direction is indicated by a straight line in two-dimensional coordinates;

[0205] The stress value is indicated by color, and the fast axis direction is indicated by the straight line direction in three-dimensional coordinates;

[0206] The diameter of the circle indicates the delay, and the direction of the fast axis is indicated by the straight line.

[0207] The diameter of the circle indicates the delay, and different colors are used to show positive and negative values.

[0208] In one possible implementation, the scanning measurement setting interface includes the following multiple scanning function options: scanning type setting option, scanning mode setting option, scanning position setting option, sample glass thickness value setting box, step setting box, offset interval time setting option, quick scanning option, offset remaining time display box, offset delay display box, and pause setting option.

[0209] The present disclosure also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method described in any one of the aforementioned embodiments are implemented.

[0210] The present disclosure also provides a stress detector, including:

[0211] a memory having a computer program stored thereon;

[0212] A processor is used to execute the computer program in the memory to implement the steps of the method in any one of the aforementioned embodiments.

[0213] Figure 5 The glass internal stress performance testing device 100 shown includes: a processor 1001 and a memory 1003. The processor 1001 and the memory 1003 are connected, such as through a bus 1002. Optionally, the glass internal stress performance testing device 100 may also include a communication component 1004, which can be used for data interaction between the device 100 and other devices, such as data transmission and / or data reception. It should be noted that in actual scheduling, the communication component 1004 is not limited to one, and the structure of the glass internal stress performance testing device 100 does not constitute a limitation on the embodiments of the present application.

[0214] Processor 1001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. Processor 1001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0215] The bus 1002 may include a path to transmit information between the above components. The bus 1002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 1002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0216] The memory 1003 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), magnetic disk storage medium, other magnetic storage devices, or any other medium that can be used to carry or store program code and can be read by a computer, without limitation herein.

[0217] The memory 1003 is used to store program codes for executing the embodiments of the present disclosure, and the execution is controlled by the processor 1001. The processor 1001 is used to execute the program codes stored in the memory 1003 to implement the steps shown in the embodiment of the glass internal stress performance test method.

[0218] The embodiment of the present disclosure further provides a computer-readable storage medium having program codes stored thereon. When the program codes are executed by a processor, the steps and corresponding contents of the aforementioned glass internal stress performance test method embodiment can be implemented.

[0219] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments; within the technical concept of the present disclosure, various changes, modifications, substitutions and variations may be made to these embodiments, and these changes, modifications, substitutions and variations all fall within the protection scope of the present disclosure.

[0220] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and they should also be regarded as the contents disclosed in this disclosure. In order to avoid unnecessary repetition, this disclosure will not further describe various possible combinations. The technical scope of this application is not limited to the contents in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A method for testing internal stress performance of glass, characterized in that: Applied to a stress detector, wherein the stress detector includes a laser emitter, a sample carrier, a beam splitter, polarizers with different polarization angles, and detectors used in conjunction with different polarization angles, and the method includes: In response to the stress performance test operation on the sample glass, a scanning measurement setting interface is displayed, wherein the scanning measurement setting interface displays a plurality of scanning function options; In response to a start scanning operation performed on the scanning measurement setting interface, a target parameter value set for each of the scanning function options on the scanning measurement setting interface is obtained, and a measurement mode for performing the glass internal stress scanning this time is determined according to a magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds; According to the measurement mode and the target parameter values ​​set for each of the scanning function options, the laser emitter is controlled to emit laser light to the sample glass and the feeding movement of the sample glass is controlled, so that the laser light after passing through the sample glass is split into laser beams propagating along multiple paths by a beam splitter, and the light spot polarized and transmitted by the polarizer corresponding to the detector is detected by the detector on the corresponding path to obtain a measurement result; Determine an internal stress performance test result according to the measurement results corresponding to the different detectors, and display the internal stress performance test result in a pre-selected display mode; The method of determining the measurement method of the glass internal stress scan according to the relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds includes: When the target parameter value is less than or equal to the first preset time threshold, determining that the measurement method for performing the stress scanning in the glass this time is to perform a first preset step length movement measurement for a preset scanning range; When the target parameter value is greater than the first preset time threshold and the target parameter value is less than or equal to the second preset time threshold, determining that the measurement method for performing the stress scanning in the glass this time is to perform the first preset step length movement measurement for the preset scanning range, and perform scanning interpolation during the measurement process; When the target parameter value is greater than the second preset time threshold and the target parameter value is less than or equal to the third preset time threshold, determining that the measurement method for performing the stress scanning in the glass this time is to perform the first preset step length moving measurement for the preset scanning range, and not performing scanning interpolation during the measurement process; When the target parameter value is greater than the third preset time threshold and the target parameter value is less than or equal to the fourth preset time threshold, it is determined that the measurement method for performing the stress scanning in the glass this time is to perform a second preset step length moving measurement for a preset scanning range, and no scanning interpolation is performed during the measurement process, wherein the second preset step length is smaller than the first preset step length.

2. The glass internal stress performance testing method according to claim 1, characterized in that: The stress detector further includes: a 45-degree polarizer and a PEM splitter, wherein the laser beam transmitted through the sample glass is split by the beam splitter into a first laser beam propagating along a first path and a second laser beam propagating along a second path, including: The laser light is passed through the first 45-degree sub-polarizer and the second 45-degree sub-polarizer from left to right in sequence through the 45-degree polarizer, and the hypotenuses of the first 45-degree sub-polarizer and the second 45-degree sub-polarizer overlap, so that the laser light is adjusted to be a laser light propagating vertically downward; Phase modulating the laser light propagating vertically downward by the PEM splitter mirror to generate laser light of a specific frequency; After the laser of the specific frequency is transmitted through the sample glass, it is irradiated onto the beam splitter from the transmission hole of the sample support table. The beam splitter splits the laser into the first laser beam propagating along the first path and the second laser beam propagating along the second path.

3. The glass internal stress performance testing method according to claim 1, characterized in that: The stress detector is composed of a Y-axis driven by a central servo and two sets of X-axes driven by servos, forming a gantry structure, wherein the two sets of X-axes are fixed as an integrated structure, and the movement of the sample glass during the performance test is performed by the Y-axis feeding motion, and the laser emitter is controlled to emit laser to the sample glass and the feeding motion of the sample glass according to the measurement mode and the target parameter value set by each scanning function option, including: According to the measurement mode and the target parameter values ​​set in each scanning function option, the instructions are sent to the laser transmitter to control the power, wavelength and polarization state of the laser emitted by the laser transmitter, and the emission position and angle of the laser are adjusted in real time according to the feeding movement of the sample glass; Determine the measurement path and measurement speed for the sample glass according to the measurement mode, the target parameter values ​​set for the scan type setting option, the scan mode setting option, the scan position setting option and the step setting box in the scan function option, wherein the scan type setting option is used to determine the scan area range, and the scan mode setting option is used to determine the path shape; According to the measuring path and the measuring speed, a feeding instruction is sent to the servo drive system to which the Y-axis belongs, so as to drive the sample glass to perform feeding movement in the Y-axis direction.

4. The glass internal stress performance testing method according to claim 3, characterized in that: Determining the measurement path and the measurement speed for the sample glass according to the measurement mode, the target parameter values ​​set for the scan type setting option, the scan mode setting option, the scan position setting option and the step setting box in the scan function option, comprises: Determine a scanning starting point and a scanning area range for the sample glass according to the target parameter values ​​for the scanning type setting option and the scanning position setting option in the scanning function option; Determine the scanning starting point as the upper left corner position or the lower right corner position according to the scanning area range and the target parameter value of the scanning mode setting option; According to the target parameter value of the scanning position setting option, the lower right corner position is determined by inputting the length and width at the upper left corner position, or the upper left corner position is determined by inputting the length and width at the lower right corner position, wherein the target parameter value of the scanning position setting option includes the length and the width; Planning a measurement path for the sample glass according to the measurement mode, the target parameter value of the scanning mode setting option, the upper left corner position and the lower right corner position, wherein the measurement path includes a first measurement path for determining the lower right corner position by inputting the length and width at the upper left corner position or a second measurement path for determining the upper left corner position by inputting the length and width at the lower right corner position; The measuring distance of this scanning is determined according to the measuring path, and the measuring speed for the sample glass is determined according to the measuring distance and the target parameter value set in the step setting box.

5. The glass internal stress performance testing method according to claim 1, characterized in that: Determining the internal stress performance test result according to the measurement results corresponding to the different detectors, and displaying the internal stress performance test result in a pre-selected display mode, includes: Determine the phase difference between the laser beams propagating along different paths and the light intensity change of the laser beam propagating along each path according to the measurement results corresponding to the different detectors; Determining stress values ​​at various points on the sample glass according to the change in the phase difference and the change in the light intensity; Combine the stress values ​​of each point on the sample glass to generate the fast axis direction of the laser beam, and determine the internal stress performance test result according to the stress values ​​of each point and the fast axis direction; The internal stress performance test result is displayed in at least one of the following display modes: The stress value is indicated by color, and the fast axis direction is indicated by a straight line in two-dimensional coordinates; The stress value is indicated by color, and the fast axis direction is indicated by the straight line direction in three-dimensional coordinates; The diameter of the circle indicates the delay, and the direction of the fast axis is indicated by the straight line. The diameter of the circle indicates the delay, and different colors are used to show positive and negative values.

6. The glass internal stress performance testing method according to any one of claims 1 to 5, characterized in that: The scanning measurement setting interface includes the following multiple scanning function options: scanning type setting option, scanning mode setting option, scanning position setting option, sample glass thickness value setting box, step setting box, offset interval time setting option, fast scanning option, offset remaining time display box, offset delay display box, and pause setting option.

7. A glass internal stress performance testing device, characterized in that: Applied to a stress detector, wherein the stress detector includes a laser emitter, a sample carrier, a beam splitter, polarizers with different polarization angles, and detectors used in conjunction with different polarization angles, and the device includes: A first display module is configured to display a scanning measurement setting interface in response to a stress performance test operation on a sample glass, wherein the scanning measurement setting interface displays a plurality of scanning function options; an acquisition module, configured to, in response to a start scanning operation executed on the scanning measurement setting interface, acquire a target parameter value set for each of the scanning function options on the scanning measurement setting interface, and determine a measurement method for performing the glass internal stress scanning this time according to a magnitude relationship between the target parameter value of the measurement time in the scanning function option and a plurality of preset time thresholds; The test module is configured to control the laser emitter to emit laser light to the sample glass and control the feeding movement of the sample glass according to the measurement mode and the target parameter value set for each scanning function option, so that the laser light after passing through the sample glass is split into laser beams propagating along multiple paths by a beam splitter, and the detector on the corresponding path detects the light spot after polarization transmission by the polarizer corresponding to the detector to obtain the measurement result; A second display module is configured to determine an internal stress performance test result according to the measurement results corresponding to different detectors, and display the internal stress performance test result in a pre-selected display mode; The acquisition module is configured as follows: When the target parameter value is less than or equal to the first preset time threshold, determining that the measurement method for performing the stress scanning in the glass this time is to perform a first preset step length movement measurement for a preset scanning range; When the target parameter value is greater than the first preset time threshold and the target parameter value is less than or equal to the second preset time threshold, determining that the measurement method for performing the stress scanning in the glass this time is to perform the first preset step length movement measurement for the preset scanning range, and perform scanning interpolation during the measurement process; When the target parameter value is greater than the second preset time threshold and the target parameter value is less than or equal to the third preset time threshold, determining that the measurement method for performing the stress scanning in the glass this time is to perform the first preset step length moving measurement for the preset scanning range, and not performing scanning interpolation during the measurement process; When the target parameter value is greater than the third preset time threshold and the target parameter value is less than or equal to the fourth preset time threshold, it is determined that the measurement method for performing the stress scanning in the glass this time is to perform a second preset step length moving measurement for a preset scanning range, and no scanning interpolation is performed during the measurement process, wherein the second preset step length is smaller than the first preset step length.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 6 are implemented.

9. A stress detector, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 6.

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