Astigmatism compensation systems and methods, apparatuses, media, and electronic devices

Abstract

The embodiment of the application provides a kind of astigmatism compensation system and method, device, medium and electronic equipment, astigmatism compensation method includes: obtaining target astigmatism degree and astigmatism axial angle;According to the target astigmatism degree, determine first astigmatism compensation degree and second astigmatism compensation degree;According to the first astigmatism compensation degree and the second astigmatism compensation degree and the astigmatism axial angle, determine the target rotation angle corresponding to first cylindrical lens, second cylindrical lens, third cylindrical lens and fourth cylindrical lens respectively;According to the target rotation angle, control mechanical structure rotation.The astigmatism compensation method provided in the application can improve the accuracy of diopter detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optometric correction, and in particular to a system and method for compensating for astigmatism, an apparatus, a medium and an electronic device. BACKGROUND

[0002] Astigmatism is a common refractive error problem caused by the inconsistency of refractive power of the cornea or lens in different meridians.

[0003] Phoropter is a commonly used device in ophthalmic clinics and optical stores for detecting refractive errors such as myopia, hyperopia, and astigmatism in patients. Its core components include spherical lenses, cylindrical lenses (astigmatism lenses), and prism lenses. Traditional phoropters usually have 6 to 8 astigmatism lenses, with limited astigmatism range and less flexible axial adjustment, making it difficult to meet the detection needs of complex astigmatism.

[0004] In recent years, with the advancement of ophthalmic detection technology, some new phoropters have been introduced to the market. For example, some high-end devices have increased the number of astigmatism lenses or adopted electronic control methods, improving detection accuracy and operational convenience. However, these devices still have the following problems: low accuracy, complex structure, and difficult operation. Since existing trial lenses or comprehensive optometry instruments use discrete power trial lenses for testing, and the probability of the spherical power of the human eye being an integer multiple of 0.25D or being unable to distinguish spherical differences below 0.25D is very low, most astigmatic people are in a state of undercorrection or overcorrection. It is difficult to cover a wide range of astigmatism and axial directions, resulting in low accuracy. Existing trial lenses or comprehensive optometry instruments generally have a large turntable with many astigmatism lenses, which are large in size and inconvenient to use. Due to the complex structure, the optometry steps are tedious and difficult to operate, and the device requires professional training, which is costly. SUMMARY

[0005] The embodiments of the present application provide a system and method for compensating for astigmatism, an apparatus, a medium and an electronic device to solve the technical problem of low astigmatism detection accuracy in the prior art.

[0006] A first aspect of this application provides an astigmatism compensation system, including a first cylindrical lens pair, a second cylindrical lens pair, and a rotation control unit. The system includes: a first cylindrical lens pair comprising a first cylindrical lens and a second cylindrical lens, the first cylindrical lens pair being used to provide a first astigmatism compensation power; a second cylindrical lens pair comprising a third cylindrical lens and a fourth cylindrical lens, the second cylindrical lens pair being used to provide a second astigmatism compensation power; and a rotation control unit comprising a mechanical structure and an electronic device, the electronic device being connected to the mechanical structure and used to control the rotation of the mechanical structure, wherein the mechanical structure is respectively connected to the first cylindrical lens, the second cylindrical lens, and the... The third cylindrical lens is connected to the fourth cylindrical lens and is used to control the rotation of the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens. The electronic device is also used to acquire the target astigmatism degree and the astigmatism axis angle, determine the first astigmatism compensation degree and the second astigmatism compensation degree based on the target astigmatism degree, determine the target rotation angle corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens respectively based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle, and control the rotation of the mechanical structure according to the target rotation angle.

[0007] In some possible embodiments of this application, determining the first astigmatism compensation degree and the second astigmatism compensation degree based on the target astigmatism degree includes: if the target astigmatism degree is located in a first interval, the first astigmatism compensation degree is equal to the target astigmatism degree, and the second astigmatism compensation degree is equal to zero, wherein the minimum value of the first interval is 2F. C2 The maximum value of the first interval is 2F. C1 F C1 F is equal to the average of the absolute values ​​of the refractive power of the first cylindrical lens pair. C2 The first astigmatism compensation factor is equal to the average of the absolute values ​​of the refractive power of the second cylindrical lens pair; if the target astigmatism is within the second interval, the first astigmatism compensation factor is equal to 2F. C2 The second astigmatism compensation degree is equal to the difference between the target astigmatism degree and the first astigmatism compensation degree, the minimum value of the second interval is 0, and the maximum value of the second interval is 2F. C2 .

[0008] In some possible embodiments of this application, if the target astigmatism degree is located in the first interval, the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens, determined based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle, are calculated using the following formula.

[0009]

[0010] Where, θ 11 Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 Let θ be the target rotation angle corresponding to the second cylindrical lens. 12 Let θ be the target rotation angle corresponding to the third cylindrical lens. 22 This represents the target rotation angle corresponding to the fourth cylindrical lens. The astigmatic axis angle is... This is the first astigmatism compensation degree.

[0011] In some possible embodiments of this application, if the target astigmatism degree is located in the second interval, the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens, determined based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle, are calculated using the following formula.

[0012]

[0013] Where, θ 11 Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 Let θ be the target rotation angle corresponding to the second cylindrical lens. 12 θ represents the target rotation angle corresponding to the third cylindrical lens. 22 The target rotation angle corresponding to the fourth cylindrical lens. The astigmatic axis angle is... This is the first astigmatism compensation degree. This is the second astigmatism compensation degree.

[0014] In some possible embodiments of this application, the power of the cylindrical lens in the first cylindrical lens pair is greater than the power of the cylindrical lens in the second cylindrical lens pair.

[0015] In some possible embodiments of this application, the first cylindrical lens pair and the second cylindrical lens pair are any combination of the following: a positive cylindrical lens and a negative cylindrical lens of the same power; two positive cylindrical lenses of the same power; or two negative cylindrical lenses of the same power.

[0016] A second aspect of this application provides an astigmatism compensation method, the method comprising: acquiring a target astigmatism degree and an astigmatism axis angle; determining a first astigmatism compensation degree and a second astigmatism compensation degree based on the target astigmatism degree; determining target rotation angles corresponding to a first cylindrical lens, a second cylindrical lens, a third cylindrical lens, and a fourth cylindrical lens respectively based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle; and controlling the rotation of a mechanical structure based on the target rotation angles.

[0017] A third aspect of this application provides an astigmatism compensation device, comprising: an acquisition module for acquiring a target astigmatism degree and an astigmatism axis angle; a determination module for determining a first astigmatism compensation degree and a second astigmatism compensation degree based on the target astigmatism degree; the determination module is further configured to determine target rotation angles corresponding to a first cylindrical lens, a second cylindrical lens, a third cylindrical lens, and a fourth cylindrical lens based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle; and a processing module for controlling the rotation of a mechanical structure based on the target rotation angles.

[0018] A fourth aspect of this application provides a computer-readable storage medium storing at least one instruction that, when executed by a processor, implements the astigmatism compensation method described above.

[0019] A fifth aspect of this application provides an electronic device, including: a memory and a processor, wherein the processor executes computer-readable instructions stored in the memory to implement the astigmatism compensation method described above.

[0020] The astigmatism compensation method provided in this application involves: acquiring the target astigmatism degree and the astigmatic axis angle; determining a first astigmatism compensation degree and a second astigmatism compensation degree based on the target astigmatism degree; determining the target rotation angles corresponding to the first, second, third, and fourth cylindrical lenses respectively based on the first and second astigmatism compensation degrees and the astigmatic axis angle; and controlling the rotation of the mechanical structure based on the target rotation angles. The astigmatism compensation method provided in this application can improve the accuracy of refractive power detection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of an astigmatism compensation system provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram illustrating the application environment of an astigmatism compensation system provided in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0025] Figure 4 This is a schematic flowchart of an astigmatism compensation method provided in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of an astigmatism compensation device provided in an embodiment of this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] It should be noted that in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and drawings of this application are used to distinguish similar objects, not to describe a specific order or sequence.

[0029] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner. Unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0030] In recent years, with the advancement of ophthalmic testing technology, some new bullseye refraction devices have gradually been introduced to the market. For example, some high-end devices have increased the number of astigmatism lenses or adopted electronic control methods, improving testing accuracy and ease of operation. However, these devices still suffer from the following problems: low accuracy, complex structure, and difficult operation. Because existing trial lens holders or comprehensive refraction devices use trial lenses with discrete diopters (0.25D steps) for testing, and the probability that the human eye's spherical power is an integer multiple of 0.25D or that it cannot distinguish differences in spherical power below 0.25D is very low, most astigmatists are undercorrected or overcorrected. This makes it difficult to cover a wide range of astigmatism degrees and axes, resulting in low accuracy. Existing trial lens holders or comprehensive refraction devices are generally large rotating discs with many astigmatism lenses, making them bulky and inconvenient to use. Due to their complex structure, the refraction process is cumbersome, operation is difficult, the equipment requires professional training, and the cost is high.

[0031] To address the aforementioned problems, this application provides an astigmatism compensation system for optometry equipment. Please refer to... Figure 1 This is a schematic diagram of an astigmatism compensation system for an optometry device provided in an embodiment of this application. Figure 1 As shown, the astigmatism compensation system 100 includes a first cylindrical lens pair 10, a second cylindrical lens pair 20, and a rotation control unit 30. Wherein, as... Figure 2 As shown, the first cylindrical lens pair 10 includes a first cylindrical lens 101 and a second cylindrical lens 102. The first cylindrical lens pair 10 serves as the basic astigmatism compensation component, used to determine the base astigmatism power. The first cylindrical lens 101 and the second cylindrical lens 102 are arranged parallel to each other along the optical axis of the human eye 1. The first cylindrical lens 101 and the second cylindrical lens 102 form a cross-cylinder lens system. When the relative angle (e.g., axis difference) of the two cylindrical lenses changes, the combined astigmatism correction power of the first cylindrical lens 101 and the second cylindrical lens 102 changes accordingly. The rotation control unit 30 is responsible for precisely rotating the cylindrical lenses in the first cylindrical lens pair 10 to change the relative angle of the two cylindrical lenses, thereby accurately setting the desired combined astigmatism power.

[0032] However, any mechanical system has a slight angular error. This can be caused by a variety of factors, such as gear backlash in the rotary control unit 30, motor stepping accuracy, encoder resolution, bearing clearance, assembly tolerances, and slight material deformation. Angular error is an unavoidable, minute quantity (e.g., a few tenths of a degree or a few degrees). Because the cylindrical lens used in the first cylindrical lens pair 10 has a high power, even a small angular error in the rotary control unit 30 can lead to a relatively large error in the final synthesized astigmatism power.

[0033] The second cylindrical lens pair 20 includes a third cylindrical lens 201 and a fourth cylindrical lens 202. The third cylindrical lens 201 and the fourth cylindrical lens 202 also constitute a cross-cylindrical lens system, but the power of the cylindrical lenses used in this system is much lower than that of the first cylindrical lens pair 10. The first cylindrical lens pair 10 is responsible for providing the main part of astigmatism correction (base power). Due to its high power, it covers a large range of astigmatism, but its accuracy is limited by rotational errors. The second cylindrical lens pair 20 is responsible for compensating for the power error caused by rotational errors in the first cylindrical lens pair 10, as well as for any potentially finer power adjustments. The second cylindrical lens pair 20 is used to compensate for the astigmatism base compensation module, because the high power of the first cylindrical lens 101 and the second cylindrical lens 102 in the first cylindrical lens pair 10 causes errors in the rotation control unit 30 during use. Specifically, the power of the cylindrical lenses in the first cylindrical lens pair 10 is greater than that of the cylindrical lenses in the second cylindrical lens pair 20.

[0034] In some embodiments of this application, the first cylindrical lens 101 and the second cylindrical lens 102 in the first cylindrical lens pair 10 can be two positive and two negative cylindrical lenses of the same power, or two positive cylindrical lenses of the same power, or two negative cylindrical lenses of the same power. Similarly, the third cylindrical lens 201 and the fourth cylindrical lens 202 in the second cylindrical lens pair 20 can be two positive and two negative cylindrical lenses of the same power, or two positive cylindrical lenses of the same power, or two negative cylindrical lenses of the same power.

[0035] In some embodiments of this application, when the cylindrical lens pair consists of two positive and two negative cylindrical lenses, the initial symmetry axes of the two cylindrical lenses should coincide. When the cylindrical lens pair consists of two positive cylindrical lenses or two negative cylindrical lenses, the initial positions of the symmetry axes of the two cylindrical lenses should be perpendicular to each other. Furthermore, when used, they should be paired with concave or convex lenses to eliminate the spherical power they introduce.

[0036] In some embodiments of this application, the rotation control unit 30 includes a mechanical structure 301 and a control unit 302, wherein the control unit 302 can control the movement of the mechanical structure 301. The mechanical structure 301 is connected to the first cylindrical lens pair 10 and the second cylindrical lens pair 20 respectively, and is used to control the rotation of the first cylindrical lens 101 and / or the second cylindrical lens 102 in the first cylindrical lens pair 10, and also to control the rotation of the third cylindrical lens 201 and / or the fourth cylindrical lens 202 in the second cylindrical lens pair 20. The control unit 302 is also used to receive astigmatic information, calculate the required rotation angle information of the cylindrical lenses in the first cylindrical lens pair 10 and / or the second cylindrical lens pair 20 based on the astigmatic information, and control the rotation of the mechanical structure 301 according to the angle information.

[0037] In some embodiments of this application, the control unit 302 may be an electronic device 300; please refer to [link to relevant documentation]. Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 3 As shown, in one embodiment of this application, the electronic device 300 can be a mobile phone, tablet computer, smart wearable device, augmented reality (AR) / virtual reality (VR) device, laptop computer, netbook, etc. This application embodiment does not impose any restrictions on the specific type of electronic device 300.

[0038] like Figure 3 As shown, the electronic device 300 may include, but is not limited to, a communication module 3001, a memory 3002, a processor 3003, an input / output (I / O) interface 3004, and a bus 3005. The processor 3003 is coupled to the communication module 3001, the memory 3002, and the I / O interface 3004 via the bus 3005.

[0039] Those skilled in the art will understand that the schematic diagram is merely an example of electronic device 300 and does not constitute a limitation on electronic device 300. It may include more or fewer components than shown, or combine certain components, or different components. For example, electronic device 300 may also include network access devices, etc.

[0040] Communication module 3001 may include a wired communication module and / or a wireless communication module. The wired communication module may provide one or more wired communication solutions, such as Universal Serial Bus (USB) and Controller Area Network (CAN). The wireless communication module may provide one or more wireless communication solutions, such as Wireless Fidelity (Wi-Fi), Bluetooth (BT), mobile communication networks, Frequency Modulation (FM), Near Field Communication (NFC), and Infrared (IR) technologies.

[0041] The memory 3002 can be used to store computer-readable instructions and / or modules. The processor 3003 implements various functions of the electronic device 300 by running or executing the computer-readable instructions and / or modules stored in the memory 3002 and by calling the data stored in the memory 3002. The memory 3002 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 300, etc. The memory 3002 may include non-volatile and volatile memory, such as: hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other storage devices.

[0042] The memory 3002 can be an external memory and / or an internal memory of the electronic device 300. Furthermore, the memory 3002 can be a memory in physical form, such as a memory stick, a TF card (Trans-flash Card), etc.

[0043] Processor 3003 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. Processor 3003 is the computing core and control center of electronic device 300, connecting various parts of electronic device 300 through various interfaces and lines, and executing the operating system of electronic device 300 and various installed application programs and program code.

[0044] For example, computer-readable instructions can be divided into one or more modules / submodules / units, which are stored in memory 3002 and executed by processor 3003 to complete this application. One or more modules / submodules / units can be a series of computer-readable instruction segments capable of performing a specific function, describing the execution process of the computer-readable instructions in electronic device 300. For example, computer-readable instructions can be divided into multiple modules of the aforementioned model training device.

[0045] If the modules / units integrated in the electronic device 300 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can also be implemented by instructing related hardware through computer-readable instructions. These computer-readable instructions can be stored in a computer-readable storage medium, and when executed by a processor, they can implement the steps of the various method embodiments described above.

[0046] Computer-readable instructions include computer-readable instruction code, which can be in the form of source code, object code, executable file, or some intermediate form. Computer-readable media can include: any entity or device capable of carrying computer-readable instruction code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), and random access memory (RAM).

[0047] Combination Figure 2 The memory 3002 in the electronic device 300 stores computer-readable instructions, and the processor 3003 can execute the computer-readable instructions stored in the memory 3002 to achieve, for example... Figure 2 The astigmatism compensation method shown.

[0048] Specifically, the specific implementation method of the processor 3003 for the above-mentioned computer-readable instructions can be found in [reference needed]. Figure 2 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0049] I / O interface 3004 is used to provide a channel for user input or output. For example, I / O interface 3004 can be used to connect various input and output devices, such as mouse, keyboard, touch device, display screen, etc., so that users can enter information or visualize information.

[0050] Bus 3005 is used at least to provide a channel for communication between communication modules 3001, memory 3002, processor 3003, and I / O interface 3004 in electronic device 300.

[0051] In some embodiments of this application, the control unit is used to acquire the target astigmatism degree and the astigmatism axis angle, determine the first astigmatism compensation degree and the second astigmatism compensation degree based on the target astigmatism degree, determine the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens and the fourth cylindrical lens respectively based on the first astigmatism compensation degree, the second astigmatism compensation degree and the astigmatism axis angle, and control the rotation of the mechanical structure according to the target rotation angles.

[0052] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device 300. In other embodiments of this application, the electronic device 300 may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0053] The technical solutions of this application will be described in detail below with specific embodiments. The specific embodiments described below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0054] Figure 4 This is a flowchart of the astigmatism compensation method provided in the embodiments of this application, such as... Figure 4 As shown, astigmatism compensation methods are applied in electronic devices. Depending on different requirements, the order of the steps in this flowchart can be changed, and some steps can be omitted.

[0055] Step S1: Obtain the target astigmatism degree and astigmatism axis angle.

[0056] In this embodiment, when a patient undergoes refraction using an astigmatism system, a target image can be displayed and the patient's feedback on image sharpness can be obtained. Based on the feedback data, the target astigmatism degree and astigmatic axis angle are determined to obtain initial astigmatism parameters. Specifically, the astigmatism system displays a standardized target image (e.g., ... Figure 2 As shown in the image, the patient provides the "location of the most blurred line" to the electronic device. The electronic device then converts this location into an astigmatic axis angle. (For example, 90°), and calculate the target astigmatism power C (for example, 0.75D) based on the degree of blur. Here, D stands for diopter, a standard unit of measurement for the astigmatism compensation capability of a lens.

[0057] Step S2: Determine the first astigmatism compensation degree and the second astigmatism compensation degree based on the target astigmatism degree.

[0058] In this embodiment, the target astigmatism power is equal to the sum of the first astigmatism compensation power and the second astigmatism compensation power. Taking the first cylindrical lens pair as an example of two cylindrical lenses, one positive and one negative, the first astigmatism compensation power is calculated using the following formula (1).

[0059] ;

[0060] in, F is the first astigmatism compensation power. C1 θ is equal to the average of the absolute values ​​of the refractive power of the first cylindrical lens pair. 11 Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 This represents the target rotation angle corresponding to the second cylindrical lens.

[0061] Taking the second cylindrical lens pair as an example, which consists of two cylindrical lenses, one positive and one negative, the second astigmatism compensation degree is calculated using the following formula (2).

[0062] ;

[0063] in, For the second astigmatism compensation factor, F C2 θ is equal to the average of the absolute values ​​of the refractive power of the second cylindrical lens pair. 12 Let θ be the target rotation angle corresponding to the third cylindrical lens. 22 This represents the target rotation angle corresponding to the fourth cylindrical lens.

[0064] Step S3: Determine the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens, respectively, based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle.

[0065] In this embodiment, the astigmatism compensation system can compensate for a range of 0 to 6D. Therefore, F C1 Or F C2 It should be greater than 3D. From formula (1) or formula (2), it can be seen that the first or second astigmatism compensation degree is related to the sinusoidal function of the cylindrical lens angle, and changes too rapidly with the angle near 0D. When the first or second astigmatism compensation degree is less than 0.25D, |θ 11 -θ 12 Since |<2.4°, if astigmatism compensation is performed in steps of 0.05D, when a single step is less than 0.5°, the influence of the equipment assembly and rotation control unit precision will make it impossible for a cylindrical lens pair to accurately compensate for astigmatism. When the compensation degree is low, a precise compensation part is required.

[0066] In this embodiment of the application, the astigmatism power of the second cylindrical lens pair should be greater than 0.125D.

[0067] In this embodiment, if the target astigmatism is within a first interval, the first astigmatism compensation degree is equal to the target astigmatism, and the second astigmatism compensation degree is equal to zero. The minimum value of the first interval is 2F. C2 The maximum value of the first interval is 2F. C1 Specifically, when the target astigmatism degree is in the interval [2F] C2 2F C1 The electronic device can control the rotation of the cylindrical component centered on the first cylindrical lens, at which point C2 is 0. The target rotation degrees corresponding to the first, second, third, and fourth cylindrical lenses are calculated according to the following formulas.

[0068]

[0069] Where, θ 11 Let θ be the rotation degree of the target corresponding to the first cylindrical lens. 21 Let θ be the target rotation degree corresponding to the second cylindrical lens. 12 Let θ be the rotation degree of the target corresponding to the third cylindrical lens. 22 F represents the target rotation degree corresponding to the fourth cylindrical lens. C1 F is equal to the average of the absolute values ​​of the refractive power of the first cylindrical lens pair. C2 It is equal to the average of the absolute values ​​of the refractive power of the second cylindrical lens pair. The astigmatic axis angle, This is the first astigmatism compensation degree.

[0070] If the target astigmatism degree is in the second interval, the first astigmatism compensation degree is equal to 2F. C2 The second astigmatism compensation degree is equal to the difference between the target astigmatism degree and the first astigmatism compensation degree. The minimum value of the second interval is 0, and the maximum value of the second interval is 2F. C2 .

[0071] When the astigmatism compensation value is in the range [0, 2F] C2 The cylindrical lens in the first cylindrical lens alignment should be rotated to C1=2F. C2 The cylindrical lens in the second cylindrical lens pair should be rotated to C2; the target rotation degrees corresponding to the first, second, third, and fourth cylindrical lenses are calculated according to the following formulas.

[0072] Where, θ 11Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 Let θ be the target rotation angle corresponding to the second cylindrical lens. 12 θ represents the target rotation angle corresponding to the third cylindrical lens. 22 The target rotation angle corresponding to the fourth cylindrical lens. The astigmatic axis angle is... This is the first astigmatism compensation degree. This is the second astigmatism compensation degree.

[0073] Step S4: Control the rotation of the mechanical structure according to the target rotation angle.

[0074] In this embodiment, since the mechanical mechanism is connected to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens respectively, the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens can be controlled to rotate by the corresponding target rotation angle. For example, based on the target rotation angle θ corresponding to the first cylindrical lens... 11 Control the rotation of the mechanical mechanism; based on the target rotation angle θ corresponding to the second cylindrical lens. 21 Control the rotation of the mechanical mechanism; based on the target rotation angle θ corresponding to the third cylindrical lens. 12 Control the rotation of the mechanical mechanism; based on the target rotation angle θ corresponding to the fourth cylindrical lens. 22 Control the rotation of the mechanical mechanism.

[0075] The astigmatism compensation method provided in this application enables high-precision continuous astigmatism compensation, meeting the requirements for low-step astigmatism correction and preventing undercorrection and overcorrection. The astigmatism compensation system of this application requires only four cylindrical lenses to achieve a wide range of astigmatism compensation, significantly simplifying the required structure compared to existing technologies, resulting in a smaller overall device size and lighter weight. The astigmatism compensation system of this application uses two pairs of cylindrical lenses to accurately compensate for astigmatism, reducing the system's installation accuracy requirements and hardware requirements, thereby lowering the equipment cost.

[0076] Please see Figure 5This is a schematic diagram of an astigmatism compensation device provided in an embodiment of this application. The astigmatism compensation device 500 includes an acquisition module 501, a determination module 502, and a processing module 503. The acquisition module 501 is used to acquire the target astigmatism degree and the astigmatism axis angle; the determination module 502 is used to determine a first astigmatism compensation degree and a second astigmatism compensation degree based on the target astigmatism degree; the determination module 502 is also used to determine the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens respectively based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle; the processing module 503 is used to control the rotation of the mechanical structure according to the target rotation angle.

[0077] Another embodiment of this application also provides an electronic device. Figure 2 The application environment described is merely one example. In other exemplary embodiments, the computer program product implementing the astigmatism compensation method of this application can also run on any electronic device with sufficient computing power (such as...). Figure 3 In the electronic device 300 shown, the various steps of the model training method and the astigmatism compensation method are executed to provide the core adjustment function.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and other division methods may be used in actual implementation.

[0079] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0080] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional modules.

[0081] Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application. No appended diagram markings in the claims should be construed as limiting the scope of the claims.

[0082] Furthermore, it is clear that the word "including" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices can also be implemented by a single unit or device through software or hardware. Terms such as "first," "second," etc., are used to indicate names and do not indicate any specific order.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. An astigmatism compensation system, comprising a first cylindrical lens pair, a second cylindrical lens pair, and a rotation control unit, characterized in that, The system includes: The first cylindrical lens pair includes a first cylindrical lens and a second cylindrical lens, wherein the first cylindrical lens pair is used to provide a first astigmatism compensation power; The second cylindrical lens pair includes a third cylindrical lens and a fourth cylindrical lens, and the second cylindrical lens pair is used to provide a second astigmatism compensation power; The rotation control unit includes a mechanical structure and an electronic device. The electronic device is connected to the mechanical structure and is used to control the rotation of the mechanical structure. The mechanical structure is connected to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens respectively, and is used to control the rotation of the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens. The electronic device is also used to acquire the target astigmatism degree and astigmatism axis angle, determine the first astigmatism compensation degree and the second astigmatism compensation degree based on the target astigmatism degree, determine the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens and the fourth cylindrical lens respectively based on the first astigmatism compensation degree, the second astigmatism compensation degree and the astigmatism axis angle, and control the rotation of the mechanical structure according to the target rotation angle; The step of determining the first astigmatism compensation degree and the second astigmatism compensation degree based on the target astigmatism degree includes: If the target astigmatism degree is within the first interval, the first astigmatism compensation degree is equal to the target astigmatism degree, and the second astigmatism compensation degree is equal to zero. The minimum value of the first interval is 2F. C2 The maximum value of the first interval is 2F. C1 F C1 F is equal to the average of the absolute values ​​of the refractive power of the first cylindrical lens pair. C2 It is equal to the average of the absolute values ​​of the refractive power of the second cylindrical lens pair; If the target astigmatism degree is located in the second interval, the first astigmatism compensation degree is equal to 2F. C2 The second astigmatism compensation degree is equal to the difference between the target astigmatism degree and the first astigmatism compensation degree, the minimum value of the second interval is 0, and the maximum value of the second interval is 2F. C2； If the target astigmatism degree is within the first interval, the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens, determined based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle, are calculated using the following formula. Where, θ 11 Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 Let θ be the target rotation angle corresponding to the second cylindrical lens. 12 Let θ be the target rotation angle corresponding to the third cylindrical lens. 22 This represents the target rotation angle corresponding to the fourth cylindrical lens. The astigmatic axis angle is... This is the first astigmatism compensation degree.

2. The astigmatism compensation system according to claim 1, characterized in that, If the target astigmatism degree is within the second interval, the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens, determined based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle, are calculated using the following formula. ； Where, θ 11 Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 Let θ be the target rotation angle corresponding to the second cylindrical lens. 12 θ represents the target rotation angle corresponding to the third cylindrical lens. 22 The target rotation angle corresponding to the fourth cylindrical lens. The astigmatic axis angle is... This is the first astigmatism compensation degree. This is the second astigmatism compensation degree.

3. The astigmatism compensation system according to claim 1, characterized in that, The power of the cylindrical lens in the first cylindrical lens pair is greater than the power of the cylindrical lens in the second cylindrical lens pair.

4. The astigmatism compensation system according to claim 1, characterized in that, The first cylindrical lens pair and the second cylindrical lens pair are any one of the following combinations: Positive cylindrical lenses and negative cylindrical lenses of the same power; Two positive cylindrical lenses with the same power; Two negative cylindrical lenses with the same power.

5. A method for astigmatism compensation using the astigmatism compensation system as described in any one of claims 1 to 4, characterized in that, The method includes: Obtain the target astigmatism power and astigmatism axis angle; The first astigmatism compensation degree and the second astigmatism compensation degree are determined based on the target astigmatism degree; The target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens are determined based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatism axis angle. The mechanical structure is rotated according to the target rotation angle.

6. An astigmatism compensation device, characterized in that, The astigmatism compensation device includes: The acquisition module is used to acquire the target astigmatism degree and astigmatism axis angle; The determining module is used to determine a first astigmatism compensation degree and a second astigmatism compensation degree based on the target astigmatism degree, including: if the target astigmatism degree is located in a first interval, the first astigmatism compensation degree is equal to the target astigmatism degree, and the second astigmatism compensation degree is equal to zero, wherein the minimum value of the first interval is 2F. C2 The maximum value of the first interval is 2F. C1 F C1 F is equal to the average of the absolute values ​​of the refractive power of the first cylindrical lens pair. C2 The first astigmatism compensation factor is equal to the average of the absolute values ​​of the refractive power of the second cylindrical lens pair; if the target astigmatism is within the second interval, the first astigmatism compensation factor is equal to 2F. C2 The second astigmatism compensation degree is equal to the difference between the target astigmatism degree and the first astigmatism compensation degree, the minimum value of the second interval is 0, and the maximum value of the second interval is 2F. C2 ; The determining module is further configured to determine the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens respectively, based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatic axis angle. If the target astigmatism degree is within the first interval, the target rotation angles corresponding to the first cylindrical lens, the second cylindrical lens, the third cylindrical lens, and the fourth cylindrical lens respectively, determined based on the first astigmatism compensation degree, the second astigmatism compensation degree, and the astigmatic axis angle, are calculated using the following formula. ; Where, θ 11 Let θ be the target rotation angle corresponding to the first cylindrical lens. 21 Let θ be the target rotation angle corresponding to the second cylindrical lens. 12 Let θ be the target rotation angle corresponding to the third cylindrical lens. 22 This represents the target rotation angle corresponding to the fourth cylindrical lens. The astigmatic axis angle is... This is the first astigmatism compensation degree; The processing module is used to control the rotation of the mechanical structure according to the target rotation angle.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one instruction, which, when executed by a processor, implements the astigmatism compensation method as described in claim 5.

8. An electronic device, characterized in that, include: Memory, and A processor that executes computer-readable instructions stored in the memory to implement the astigmatism compensation method as described in claim 5.

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