Periscope head portrait difference compensation method and system, computer and storage medium

Abstract

The invention discloses a periscope head image difference compensation method and system, a computer and a storage medium, a periscope head comprises a reflecting prism, a lens group and a diffractive optical element, and the non-reflecting surface of the reflecting prism is provided with a polarization coating; the method comprises the following steps: constructing an optical path model according to design requirements of a periscope lens module, and carrying out aberration analysis on the optical path model; calculating a chromatic aberration compensation phase function of the diffractive optical element according to a chromatic aberration compensation formula; calculating a spherical aberration compensation phase function of the diffractive optical element according to a spherical aberration expansion formula; and calculating a total phase function of the diffractive optical element, and performing aberration compensation on the optical path model according to the total phase function. According to the long-focus periscope lens module, the total aberration of the periscope lens module can be compensated by utilizing the cooperation of the diffractive optical element and the reflecting prism with the polarization coating, so that the size of the long-focus periscope lens module is reduced, and the imaging quality of the long-focus periscope lens module is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of periscope lenses, and particularly relates to an aberration compensation method, system, computer, and storage medium for a periscope lens. Background Art

[0002] With the continuous development of mobile phone technology, smart phones have evolved from a single communication tool to a comprehensive terminal integrating social entertainment, imaging creation, and intelligent perception. Among them, the imaging function, as the core module of the user experience, has become a key indicator for consumers to select devices. Due to physical size limitations, traditional upright lenses are difficult to achieve long focal length optical designs, while periscope lenses can significantly compress the module thickness by folding the optical path and have become the mainstream solution for achieving optical zoom of more than 5 times. Its core structure includes an incident lens group, a reflecting prism, a relay lens group, and an image sensor, and the total optical path length can reach 3 - 5 times that of traditional lenses, significantly improving the telephoto ability.

[0003] Existing periscope lenses generally have aberration problems caused by fixed optical path designs, such as significant chromatic aberration and spherical aberration at high magnifications. Among them, chromatic aberration is caused by the fact that when light passes through multiple lens groups in a long optical path, due to the refractive index of the lens material varying with wavelength, light of different wavelengths generates lateral offsets on the sensor plane. The refractive index of short wavelengths is higher than that of long wavelengths, resulting in the focal point of short wavelength light moving forward and the focal point of long wavelength light moving backward, forming axial chromatic aberration. At high magnification imaging, this phenomenon is amplified, manifested as purple or green edge artifacts of the object, especially seriously affecting the imaging quality in scenes with strong light and dark contrast. Spherical aberration is caused by the inherent defect of the spherical curvature of the lens, resulting in the separation of the focal points of marginal rays and paraxial rays.

[0004] In the prior art, for the above chromatic aberration and spherical aberration problems, the following methods are mainly used for compensation:

[0005] 1. Suppress chromatic aberration by using high Abbe number materials (such as low - dispersion materials, fluorite, Abbe number ≈ 95), but its material cost is high and the processing difficulty is large, making it difficult to be popularized in consumer - level lenses.

[0006] 2. Correct spherical aberration by using aspherical lenses. However, for high - order spherical aberration, such as fifth - order spherical aberration, it is still difficult to eliminate, and aspherical lenses are also difficult to process. Summary of the Invention

[0007] Aiming at the deficiencies of the above - mentioned prior art, the technical problem to be solved by the present invention is: to propose an aberration compensation method, system, computer, and storage medium for a periscope lens, which can utilize the cooperation of a diffractive optical element (DOE) and a reflecting prism with a polarization coating to compensate for the total aberration of the periscope lens module, thereby reducing the volume of the telephoto periscope lens module and improving the imaging quality of the telephoto periscope lens module.

[0008] One technical solution adopted by the present invention is: to provide a method for compensating aberration of a periscope lens. The periscope lens includes a reflecting prism, a lens group, and a diffractive optical element disposed between the reflecting prism and the lens group. A polarization coating is provided on the non-reflecting surface of the reflecting prism. The method includes:

[0009] S1: Construct an optical path model according to the design requirements of the periscope lens module, and perform aberration analysis on the optical path model;

[0010] S2: Calculate the chromatic aberration compensation phase function of the diffractive optical element according to the chromatic aberration compensation formula;

[0011] S3: Calculate the spherical aberration compensation phase function of the diffractive optical element according to the spherical aberration expansion formula;

[0012] S4: Calculate the total phase function of the diffractive optical element, and perform aberration compensation on the optical path model according to the total phase function.

[0013] Further, the step S1 includes:

[0014] S11: Input preset parameters into ray tracing software according to the design requirements of the periscope lens module to construct an optical path model;

[0015] S12: Perform polarization state separation on the optical path according to the polarization coating;

[0016] S13: Perform wavefront aberration modeling on optical paths with different polarization states.

[0017] Further, the S13 includes:

[0018] S131: Construct an s-polarized light wavefront aberration model representation:

[0019]

[0020] where x and y represent the normalized coordinate values of the optical path, a2 represents the quadratic term coefficient, a4 represents the quartic term coefficient, and ΔW coat represents the asymmetric aberration of the polarization coating;

[0021] S132: Construct a p-polarized light wavefront aberration model representation;

[0022]

[0023] where b2 represents the quadratic term coefficient and b4 represents the quartic term coefficient;

[0024] S133: Construct a total wavefront aberration model representation:

[0025]

[0026] Among them, represents the total wavefront aberration, λ represents the optical wavelength, represents the aberration of the lens group under s-polarized light or p-polarized light, represents the wavefront aberration of the polarization coating under s-polarized light or p-polarized light, represents the wavefront aberration compensation of the diffractive optical element under s-polarized light or p-polarized light.

[0027] Furthermore, the S2 step includes:

[0028] S21: According to the material dispersion formula, calculate the axial chromatic aberration compensation phase function:

[0029]

[0030] Among them, h represents the ray height, Δz(λ) represents the axial chromatic aberration offset of wavelength λ, represents the quadratic coefficient, λ represents the wavelength, and f represents the focal length;

[0031] S22: Calculate the lateral chromatic aberration compensation phase function of the diffractive optical element:

[0032]

[0033] Among them, y represents the y coordinate, and Δy(λ) represents the lateral chromatic aberration offset of wavelength λ.

[0034] Furthermore, the S3 step includes:

[0035] S31: Calculate the spherical aberration compensation phase function of the diffractive optical element under s or p polarized light:

[0036]

[0037] Among them, represents the spherical aberration compensation phase function of the diffractive optical element under s or p polarized light, represents the third-order spherical aberration compensation coefficient of s or p polarized light, represents the fifth-order spherical aberration compensation coefficient of s or p polarized light;

[0038] S32: Determine the third-order spherical aberration compensation coefficient:

[0039]

[0040] Among them, represents the third-order spherical aberration compensation coefficient of s or p polarized light, n g represents the refractive index of the lens material, f s / p represents the focal length of the lens under s or p polarized light;

[0041] S33: Determine the fifth-order spherical aberration compensation coefficient:

[0042]

[0043] wherein, represents the fifth-order spherical aberration compensation coefficient for s or p polarized light.

[0044] Furthermore, the step S4 includes:

[0045] S41: Construct the total phase function of the diffractive optical element:

[0046]

[0047] wherein,

[0048] S42: With the goal of minimizing the total wavefront aberration, determine the total phase function of the diffractive optical element, and perform aberration compensation on the optical path model according to the total phase function.

[0049] Furthermore, the polarization direction of the polarization coating is 0 to 180°, the extinction ratio is ≥1000:1 in the visible light band, the transmittance of the target polarization direction is greater than 90%, and the working wavelength is 400 to 100 nm.

[0050] The second aspect of the present invention also provides a periscope lens aberration compensation system. The periscope lens includes a reflecting prism, a lens group, and a diffractive optical element disposed between the reflecting prism and the lens group. The non-reflecting surface of the reflecting prism is provided with a polarization coating; the system includes:

[0051] An optical path model module, configured to construct an optical path model according to the design requirements of the periscope lens module and perform aberration analysis on the optical path model;

[0052] A chromatic aberration compensation module, configured to calculate the chromatic aberration compensation phase function of the diffractive optical element according to the chromatic aberration compensation formula;

[0053] A spherical aberration compensation module, configured to calculate the spherical aberration compensation phase function of the diffractive optical element according to the spherical aberration expansion formula;

[0054] An aberration compensation module, configured to calculate the total phase function of the diffractive optical element and perform aberration compensation on the optical path model according to the total phase function.

[0055] The third aspect of the present invention also provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the computer program to implement the periscope lens aberration compensation method described in any one of the above.

[0056] In a fourth aspect of the present invention, there is also provided a computer storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the aberration compensation method for a periscope lens described in any one of the above is implemented.

[0057] The aberration compensation method, system, computer, and storage medium for a periscope lens of the present invention at least have the following beneficial effects: 1. By adjusting the phase function of the diffractive optical element (DOE), spherical aberration and chromatic aberration of the lens module are compensated; 2. By providing a polarization coating on the non-reflective surface of the reflecting prism, stray light and glare can be suppressed; 3. The diffractive optical element (DOE) and the reflecting prism provided with the polarization coating act together to compensate for the total aberration of the lens module, thereby reducing the volume of the telephoto periscope lens module and improving the imaging quality of the telephoto periscope lens module. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0059] Figure 1 It is a flowchart of an embodiment of the aberration compensation method for a periscope lens of the present invention.

[0060] Figure 2 It is a sub-flowchart of step S1.

[0061] Figure 3 It is a sub-flowchart of step S13.

[0062] Figure 4 It is a sub-flowchart of step S2.

[0063] Figure 5 It is a sub-flowchart of step S3.

[0064] Figure 6 It is a sub-flowchart of step S4.

[0065] Figure 7 It is a structural block diagram of an embodiment of the aberration compensation system for a periscope lens of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0066] The present invention will be further described below with reference to the drawings.

[0067] Please refer to Figure 1, which is a flowchart of an embodiment of the aberration compensation method for a periscope lens of the present invention. A periscope lens aberration compensation method, the periscope lens module of this solution is different from the conventional long - focal - length periscope lens module in the setting of a reflecting prism - lens group - imaging unit. A diffractive optical element (hereinafter referred to as DOE) is also provided between the reflecting prism and the lens group, and a polarization coating is provided on the non - reflecting surface of the reflecting prism. That is, this solution mainly compensates for the total aberration generated by the lens module through the synergistic effect of the DOE and the polarization coating, thereby reducing the volume of the long - focal - length periscope lens module and improving the imaging quality of the long - focal - length periscope lens module. And the periscope lens aberration compensation method may include:

[0068] S1: Construct an optical path model according to the design requirements of the periscope lens module and perform aberration analysis on this optical path model. The main purpose of this S1 step is to construct an optical path model according to the actual requirements of the periscope lens module (such as parameters like the position and structure of the reflecting prism, DOE, and lens group, the working wavelength range of the lens, the field of view angle of the lens, the aperture size of the lens, and the polarization state requirements, etc.), and at the same time use optical path tracing software to perform aberration analysis on this optical path model, so as to facilitate the subsequent calculation of the compensation phase.

[0069] Please refer to Figure 2 , this S1 step may include the following sub - steps:

[0070] S11: Input preset parameters into the ray tracing software according to the design requirements of the periscope lens module to construct an optical path model; in this S11 step, after obtaining the actual requirements of the periscope lens module, the relevant parameters can be input into optical path tracing software such as zemax to construct an optical path model.

[0071] S12: Perform polarization state separation on the optical path according to the polarization coating; among them, the polarization coating of this solution can be selected according to the following parameters, such as the polarization direction is 0 - 180°, the extinction ratio is ≥1000:1 in the visible light band, the transmittance of the target polarization direction is greater than 90%, the working wavelength is 400 - 100nm. In addition, the polarization coating can also select a λ / 2 or λ / 4 wave plate. Therefore, this S12 step can perform polarization state separation on the optical path according to the above - mentioned polarization coating parameters and the actual requirements of the lens module, so as to facilitate the calculation of the aberrations of s - polarized light and p - polarized light respectively.

[0072] S13: Perform wavefront aberration modeling on the optical paths with different polarization states. After the polarization state separation of the optical path in this S13 step, wavefront aberration modeling can be performed on s - polarized light and p - polarized light respectively, and its mathematical model can be measured by a Shack - Hartmann wavefront sensor in zemax.

[0073] Please refer to Figure 3 , this S13 step may include the following sub - steps:

[0074] S131: Construct the s-polarized light wavefront aberration model as follows:

[0075]

[0076] where x and y represent the normalized coordinate values of the optical path, a2 represents the quadratic term coefficient, a4 represents the quartic term coefficient, and ΔW coat represents the asymmetric aberration of the polarization coating;

[0077] S132: Construct the p-polarized light wavefront aberration model as follows;

[0078]

[0079] where b2 represents the quadratic term coefficient and b4 represents the quartic term coefficient;

[0080] S133: Construct the total wavefront aberration model as follows:

[0081]

[0082] where represents the total wavefront aberration, λ represents the optical wavelength, represents the aberration of the lens group under s-polarized light or p-polarized light, represents the wavefront aberration of the polarization coating under s-polarized light or p-polarized light, represents the wavefront aberration compensation of the diffractive optical element under s-polarized light or p-polarized light. Among them, the above s-polarized light wavefront aberration and p-polarized light wavefront aberration can both be measured by a Shack-Hartmann wavefront sensor, and the aberration of the lens group can be obtained through the wavefront diagram of zemax or by fitting with Zernike polynomials. Then, after confirming the aberrations of the polarization coating and the lens group, in order to minimize the total wavefront aberration, it is necessary to make the phase compensation of the DOE

[0083] S2: Calculate the chromatic aberration compensation phase function of the diffractive optical element according to the chromatic aberration compensation formula. Since chromatic aberration is caused by the accumulation of material dispersion and is wavelength-dependent, targeted compensation is required. At the same time, since axial chromatic aberration and lateral chromatic aberration have different physical manifestations, mathematical models, and essential differences in their effects on imaging, different phase modulation strategies are needed to adjust them.

[0084] Please refer to Figure 4 , this step S2 may include the following sub-steps:

[0085] S21: Calculate the axial chromatic aberration compensation phase function according to the material dispersion formula:

[0086]

[0087] Among them, h represents the height of the light ray, represents the axial chromatic aberration offset of wavelength λ, represents the quadratic coefficient, λ represents the wavelength, and f represents the focal length; the wavefront error of axial chromatic aberration is related to the light ray height h. Therefore, in this step S21, the axial chromatic aberration phase function of the diffractive optical element DOE can be calculated through the material dispersion formula.

[0088] S22: Calculate the lateral chromatic aberration compensation phase function of the diffractive optical element:

[0089]

[0090] Among them, y represents the y coordinate, and Δy(λ) represents the lateral chromatic aberration offset of wavelength λ. The light of different wavelengths is laterally offset on the image plane (such as the imaging positions of blue light and red light being misaligned), resulting in a colored fringe (purple fringe) appearing at the edge of the object, which is the lateral chromatic aberration. In this step S22, the lateral chromatic aberration compensation phase function of the DOE is calculated based on the fact that the wavefront error of lateral chromatic aberration is linearly related to the image plane coordinate y.

[0091] S3: Calculate the spherical aberration compensation phase function of the diffractive optical element according to the spherical aberration expansion formula. In this solution, the spherical aberration and chromatic aberration of the lens module are mainly compensated through the synergistic effect of the DOE and the reflecting prism provided with a polarization coating. Therefore, after calculating the chromatic aberration compensation phase function of the DOE, it is also necessary to calculate the spherical aberration compensation phase function of the DOE according to the spherical aberration expansion formula.

[0092] Please refer to Figure 5 , this step S3 may include the following sub-steps:

[0093] S31: Calculate the spherical aberration compensation phase function of the diffractive optical element under s or p polarized light:

[0094]

[0095] Among them, represents the spherical aberration compensation phase function of the diffractive optical element under s or p polarized light, represents the third-order spherical aberration compensation coefficient of s or p polarized light, represents the fifth-order spherical aberration compensation coefficient of s or p polarized light;

[0096] S32: Determine the third-order spherical aberration compensation coefficient:

[0097]

[0098] Among them, represents the third-order spherical aberration compensation coefficient under s or p polarized light, n gRepresents the refractive index of the lens material, f s / p Represents the focal length of the lens in s or p polarized light;

[0099] S33: Determine the fifth-order spherical aberration compensation coefficient:

[0100]

[0101] Wherein, Represents the fifth-order spherical aberration compensation coefficient in s or p polarized light.

[0102] S4: Calculate the total phase function of the diffractive optical element, and based on the total phase function, perform aberration compensation on the optical path model.

[0103] Please refer to Figure 6 , this step S4 may include the following sub-steps:

[0104] S41: Construct the total phase function of the diffractive optical element:

[0105]

[0106] Wherein,

[0107] S42: With the goal of minimizing the total wavefront aberration, determine the total phase function of the diffractive optical element, and based on the total phase function, perform aberration compensation on the optical path model. At this time, after determining the final DOE total phase function, the microstructure design of the DOE can be completed according to this total phase function, so that the DOE can be used to perform aberration compensation on the periscope lens module with relevant design requirements.

[0108] Please refer to Figure 7 , which is the structural block diagram of a periscope lens aberration compensation system according to the present invention. The periscope lens aberration compensation system of this embodiment is used to implement the periscope lens aberration compensation method as described in the above embodiment. The periscope lens includes a reflecting prism, a lens group, and a diffractive optical element disposed between the reflecting prism and the lens group. A polarization coating is provided on the non-reflecting surface of the reflecting prism; specifically, the system includes an optical path model module 100, a chromatic aberration compensation module 200, a spherical aberration compensation module 300, and an aberration compensation module 400. Among them:

[0109] The optical path model module 100 is used to construct an optical path model according to the design requirements of the periscope lens module and perform aberration analysis on the optical path model;

[0110] The chromatic aberration compensation module 200 is used to calculate the chromatic aberration compensation phase function of the diffractive optical element according to the chromatic aberration compensation formula;

[0111] The spherical aberration compensation module 300 is used to calculate the spherical aberration compensation phase function of the diffractive optical element according to the spherical aberration expansion formula;

[0112] The aberration compensation module 400 is used to calculate the total phase function of the diffractive optical element, and compensate for the aberration of the optical path model according to the total phase function.

[0113] The present invention also provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the periscope lens aberration compensation method described in any one of the above. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. The computer program, when executed by the processor, implements a multi-agent data analysis method based on a large language model. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, a touchpad, or a mouse, etc.

[0114] On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the periscope lens aberration compensation method described in any one of the above.

[0115] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or an external cache. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0116] A method, system, computer, and storage medium for compensating aberration of a periscope lens proposed by the present invention compensates for spherical aberration and chromatic aberration of a lens module by adjusting the phase function of a diffractive optical element (DOE); and can suppress stray light and glare by setting a polarization coating on the non-reflecting surface of a reflecting prism; at the same time, it can also use the synergistic effect of the diffractive optical element (DOE) and the reflecting prism provided with the polarization coating to compensate for the total aberration of the lens module, thereby reducing the volume of the long-focus periscope lens module and improving the imaging quality of the long-focus periscope lens module.

[0117] The above content only expresses the preferred embodiments of the present invention, and its description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A method for compensating aberration of a periscope lens, characterized in that, The periscope lens includes a reflecting prism, a lens group, and a diffractive optical element disposed between the reflecting prism and the lens group, and a polarization coating is provided on a non-reflecting surface of the reflecting prism; the method includes: S1: Construct an optical path model according to the design requirements of the periscope lens module, and perform aberration analysis on the optical path model; S2: Calculate the chromatic aberration compensation phase function of the diffractive optical element according to the chromatic aberration compensation formula; S3: Calculate the spherical aberration compensation phase function of the diffractive optical element according to the spherical aberration expansion formula; S4: Calculate the total phase function of the diffractive optical element, and perform aberration compensation on the optical path model according to the total phase function.

2. The method for compensating the aberration of a periscope lens according to claim 1, characterized in that, The step S1 includes: S11: Input preset parameters into ray tracing software according to the design requirements of the periscope lens module to construct an optical path model; S12: Perform polarization state separation on the optical path according to the polarization coating; S13: Perform wavefront aberration modeling on the optical paths with different polarization states.

3. The method for compensating the aberration of a periscope lens according to claim 2, wherein, The S13 includes: S131: Construct an s-polarized light wavefront aberration model representation: where x and y represent the optical path normalized coordinate values, a2 represents the quadratic term coefficient, a4 represents the quartic term coefficient, and ΔW coat represents the asymmetric aberration of the polarization coating; S132: Construct a p-polarized light wavefront aberration model representation; where, b2 represents the quadratic term coefficient, and b4 represents the quartic term coefficient; S133: Construct a total wavefront aberration model representation: wherein, represents the total wavefront aberration, λ represents the optical wavelength, represents the aberration of the lens group under s-polarized light or p-polarized light, represents the wavefront aberration of the polarization coating under s-polarized light or p-polarized light, represents the wavefront aberration compensation of the diffractive optical element under s-polarized light or p-polarized light.

4. The periscopic lens aberration compensation method according to claim 3, wherein, The step S2 includes: S21: Calculate the axial chromatic aberration compensation phase function according to the material dispersion formula: where h represents the height of the light ray, and Δz(λ) represents the axial chromatic aberration offset of wavelength λ. represents the quadratic coefficient, λ represents the wavelength, and f represents the focal length. S22: Calculate the lateral chromatic aberration compensation phase function of the diffractive optical element: where, y represents the y coordinate, and Δy(λ) represents the lateral chromatic aberration offset at wavelength λ.

5. The method for compensating the aberration of a periscope lens according to claim 4, characterized in that, The step S3 includes: S31: Calculate the spherical aberration compensation phase function of the diffractive optical element under s- or p-polarized light: Among them, represents the spherical aberration compensation phase function of the diffractive optical element for s- or p-polarized light, represents the third-order spherical aberration compensation coefficient for s- or p-polarized light, represents the fifth-order spherical aberration compensation coefficient for s- or p-polarized light; S32: Determine the third-order spherical aberration compensation coefficient; Among them, represents the third-order spherical aberration compensation coefficient for s or p polarized light, n g represents the refractive index of the lens material, f s / p represents the focal length of the lens for s or p polarized light; S33: Determine the fifth-order spherical aberration compensation coefficient; Among them, represents the fifth-order spherical aberration compensation coefficient for s- or p-polarized light.

6. The method for compensating the aberration of a periscope lens according to claim 5, characterized in that, The step S4 includes: S41: Construct the total phase function of the diffractive optical element: Among them, S42: Determine the total phase function of the diffractive optical element with the goal of minimizing the total wavefront aberration, and perform aberration compensation on the optical path model according to the total phase function.

7. The method for compensating the aberration of a periscope lens according to claim 1, characterized in that The polarization direction of the polarization coating is 0 to 180°, the extinction ratio is ≥1000:1 in the visible light band, the transmittance of the target polarization direction is greater than 90%, and the working wavelength is 400 to 100 nm.

8. A periscope lens aberration compensation system, characterized in that, The periscope lens includes a reflecting prism, a lens group, and a diffractive optical element disposed between the reflecting prism and the lens group, and a polarization coating is provided on a non-reflecting surface of the reflecting prism; the system includes: An optical path model module for constructing an optical path model according to the design requirements of the periscope lens module and performing aberration analysis on the optical path model; A chromatic aberration compensation module for calculating the chromatic aberration compensation phase function of the diffractive optical element according to the chromatic aberration compensation formula; A spherical aberration compensation module for calculating the spherical aberration compensation phase function of the diffractive optical element according to the spherical aberration expansion formula; An aberration compensation module for calculating the total phase function of the diffractive optical element and performing aberration compensation on the optical path model according to the total phase function.

9. A computer device, comprising: A memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the periscope lens aberration compensation method according to any one of claims 1-7.

10. A computer storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by a processor, it implements the periscope lens aberration compensation method according to any one of claims 1-7.

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