A lens decentration amount acquisition method and device, a storage medium and a terminal device

Abstract

The application provides a lens eccentricity acquisition method and device, a storage medium and a terminal device. The lens comprises an entrance surface and an exit surface. Based on measurement data of an eccentricity instrument, an entrance surface eccentricity and an exit surface eccentricity measurement value of the exit surface are acquired. In the case that the object distance of the entrance surface coincides with the position of the spherical center image of the exit surface, the exit surface eccentricity is acquired based on a first vertical axis magnification, the entrance surface eccentricity and the exit surface eccentricity measurement value. In the embodiment, the interference of the entrance surface eccentricity on the exit surface eccentricity measurement value is clarified based on the entrance surface eccentricity and the exit surface eccentricity measurement value acquired by the eccentricity instrument, and the real exit surface eccentricity is accurately calculated.

Description

Technical Field

[0001] This application relates to the field of optical components, and more specifically, to a method, apparatus, storage medium, and terminal device for obtaining lens eccentricity. Background Technology

[0002] Improving the playback quality of audio-visual playback devices significantly enhances the viewing experience. A crucial component of such devices is the lens, which comprises an incident light surface and an exit light surface. The quality and proper installation of the lens directly affect the playback quality of the audio-visual playback device. Therefore, lens testing is necessary.

[0003] In lens inspection, an eccentricity meter is a commonly used tool for measuring the eccentricity of a lens surface. The principle of an eccentricity meter is to image the position of the spherical center of the surface under test, while the inspector rotates the lens around the optical axis of the bearing surface to obtain the rotational trajectory of the spherical center, thus determining its eccentricity. However, the eccentricity measurement of the lower surface (light-emitting surface) of the lens is usually affected by the eccentricity of the upper surface (light-incident surface), leading to inaccurate data. This has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this application is to provide a method, apparatus, storage medium, and terminal device for obtaining lens eccentricity, so as to at least partially improve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In a first aspect, embodiments of this application provide a method for obtaining lens eccentricity, the lens comprising an incident light surface and an exit light surface, the method comprising:

[0007] Based on the measurement data of the eccentricity meter, the eccentricity of the incident light surface and the eccentricity of the emitting light surface are obtained.

[0008] When the object distance of the incident light surface coincides with the spherical center image position of the emitting light surface, the eccentricity of the emitting light surface is obtained based on the first transverse magnification, the eccentricity of the incident light surface, and the measured value of the eccentricity of the emitting light surface.

[0009] Wherein, the first vertical magnification is the ratio of the height of the image formed by the light source on the incident surface to the height of the light source.

[0010] Secondly, embodiments of this application provide a lens eccentricity acquisition device, the lens including an incident light surface and an exit light surface, the lens eccentricity acquisition device comprising:

[0011] The information acquisition unit is used to acquire the eccentricity of the incident light surface and the eccentricity measurement value of the exit light surface based on the measurement data of the eccentricity meter.

[0012] The processing unit is configured to, when the object distance of the incident light surface coincides with the spherical center image position of the emitting light surface, obtain the eccentricity of the emitting light surface based on the first transverse magnification, the eccentricity of the incident light surface, and the measured value of the eccentricity of the emitting light surface.

[0013] Wherein, the first vertical magnification is the ratio of the height of the image formed by the light source on the incident surface to the height of the light source.

[0014] Thirdly, embodiments of this application provide a storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method.

[0015] Fourthly, embodiments of this application provide a terminal device, the terminal device comprising: a processor and a memory, the memory being used to store one or more programs; when the one or more programs are executed by the processor, the above-described method is implemented.

[0016] Compared to existing technologies, this application provides a method, apparatus, storage medium, and terminal device for obtaining lens eccentricity. The lens includes an incident light surface and an exit light surface. Based on measurement data from an eccentricity meter, the eccentricity measurements of the incident light surface and the exit light surface are obtained. When the object distance of the incident light surface coincides with the spherical center image position of the exit light surface, the eccentricity of the exit light surface is obtained based on the first transverse magnification, the incident light surface eccentricity, and the exit light surface eccentricity measurement. This embodiment, based on the incident light surface eccentricity and exit light surface eccentricity measurements obtained by the eccentricity meter, clarifies the interference of the incident light surface eccentricity on the exit light surface eccentricity measurement, and accurately calculates the true exit light surface eccentricity.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the eccentricity light propagation provided in an embodiment of this application;

[0020] Figure 2 A schematic diagram of object height and image height provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the terminal device provided in the embodiments of this application;

[0022] Figure 4 A schematic flowchart illustrating the method for obtaining lens eccentricity provided in an embodiment of this application;

[0023] Figure 5 This is one of the flowcharts illustrating the method for obtaining lens eccentricity provided in the embodiments of this application;

[0024] Figure 6 A schematic diagram showing the object distance of the incident surface coinciding with the spherical center image position of the exit surface, provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram showing the overlap of the reflected light and incident light optical paths provided in an embodiment of this application;

[0026] Figure 8 This is one of the flowcharts illustrating the method for obtaining lens eccentricity provided in the embodiments of this application;

[0027] Figure 9 This is a schematic diagram of a lens eccentricity acquisition device provided in an embodiment of this application.

[0028] In the diagram: 10-Processor; 11-Memory; 12-Bus; 13-Communication Interface; 201-Information Acquisition Unit; 202-Processing Unit. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] In the description of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] An eccentricity meter is a commonly used testing instrument in lens manufacturing and assembly. Its function is to detect the amount of lens eccentricity, and it is a common tool for confirming whether the lens surface eccentricity is within regulations and whether the lens assembly is correct. Figure 1 As shown, neither of the two surfaces of the lens may be perfect, resulting in a situation where both the R1 surface (incident surface) and the R2 surface (exit surface) are eccentric. When the R1 surface is eccentric, the detection of the R2 surface eccentricity using a reflective eccentricity meter will be affected by the R1 surface eccentricity, leading to a decrease in the accuracy of the obtained R2 surface eccentricity.

[0037] Taking the optical system of a reflective eccentricity meter as an example, in the case of interference from the surface eccentricity of other mirrors between the surface to be measured (the light-emitting surface) and the eccentricity meter, in order to obtain accurate surface eccentricity data of the surface to be measured, the inventors conducted a large number of experiments, analyzed the experimental data, and tried various methods to obtain the eccentricity characteristics of the lens. Finally, the relationship between the surface eccentricity of the light-incident surface and the light-emitting surface of the lens to be measured was transformed into the relationship between different optical axes. By using the optical relationship between object distance and image distance and between object height and image height, the actual surface eccentricity of the surface to be measured can be obtained, overcoming the difficulty of the influence of surface eccentricity of other transparent mirrors, and accurately calculating the surface eccentricity of the surface to be measured.

[0038] Please continue to refer to this. Figure 1 L1 and L2 are the eyepiece and objective lens of the eccentricity meter, respectively, and L3 is the lens under test. The mirror surface of L3 closest to the eccentricity meter is surface R1, and the mirror surface furthest from the eccentricity meter is surface R2. Assuming surface R1 has a 0.5mm eccentricity in the +Y direction and surface R2 has a 1mm eccentricity in the +Y direction, the actual eccentricity of surface R2 on the CCD detection surface is not 1mm, but rather a value affected by the magnification of surface R1 and surface eccentricity. Therefore, the transverse magnification of each surface (R1, R2 of the lens under test, and the surface reflected from R2 and then back through R1) can be calculated based on the relationship between object distance and image distance. Then, based on the known eccentricity of surface R1 and the measured eccentricity of surface R2, the actual eccentricity of surface R2 can be calculated.

[0039] like Figure 2 As shown, the light emitted from the eccentric light source will pass through the R1 surface of the lens under test for transmission, the R2 surface for reflection, and then pass through the R1 surface again for transmission (let's call it R3 surface). Based on the geometric relationship between the object height, image height, and optical axis, as well as the transverse magnification, the following formula can be derived.

[0040] y1=-O1 (1)

[0041] y′1=y1·β1 (2)

[0042] y2=(y′1+O1)-O2 (3)

[0043] y'2=y2·β2 (4)

[0044] y3=(y'2+O2)-O1 (5)

[0045] y'3=y3·β3 (6)

[0046] Eccentricity height = y'3 + O1 (7)

[0047] Eccentricity measurement value = height of eccentricity instrument × magnification of eccentricity instrument vertical axis (8)

[0048] Wherein, O1 represents the incident surface eccentricity of the incident surface (R1), O2 represents the exit surface eccentricity of the exit surface (R2), β1 represents the first transverse magnification, β2 represents the second transverse magnification, β3 represents the reciprocal of β1, y1 represents the first object height, y′1 represents the first image height, y2 represents the second object height, y'2 represents the second image height, y3 represents the third object height, and y'3 represents the third image height.

[0049] Wherein, the first object height is the object height corresponding to the light-incident surface when light enters from the first side of the light-incident surface; the third object height is the object height corresponding to the light-incident surface when light enters from the second side of the light-incident surface; the second object height is the object height corresponding to the light-exiting surface; the first image height is the image height corresponding to the light-incident surface when light enters from the first side of the light-incident surface; the third image height is the image height corresponding to the light-incident surface when light enters from the second side of the light-incident surface; the second image height is the image height corresponding to the light-exiting surface; the first side is the side away from the light-exiting surface; and the second side is the side opposite to the first side. The first transverse magnification is the ratio of the height of the image formed by the light source on the light-incident surface to the height of the light source; the second transverse magnification is the ratio of the height of the image formed by the light source on the light-exiting surface to the height of the light source; and the eccentric transverse magnification is the ratio of the height of the image formed by the light source on the eccentricity to the height of the light source.

[0050] Figure 2 In the diagram, G1 represents the center of curvature of the incident light surface (R1), and the dashed line corresponding to G1 represents the optical axis of the R1 / R3 surface. G2 represents the center of curvature of the exiting light surface (R2), and the dashed line corresponding to G2 represents the optical axis of the R2 surface. It should be understood that... Figure 2 n A and n B The value is given as an example only and does not constitute a limitation.

[0051] Optionally, by integrating equations (1) to (8), the expression for O2 can be obtained, thereby determining the specific value of O2.

[0052] Alternatively, the expression for O2 is as follows:

[0053]

[0054] It should be understood that when the object distance at the incident surface coincides with the spherical center of the exit surface, the value of β2 is -1. Therefore, the expression for O2 can be simplified to:

[0055]

[0056] This application provides a terminal device, which may be an eccentricity analyzer, a computer device, or a server device. Please refer to... Figure 3A schematic diagram of the terminal device. The terminal device includes a processor 10, a memory 11, and a bus 12. The processor 10 and the memory 11 are connected via the bus 12. The processor 10 is used to execute executable modules, such as computer programs, stored in the memory 11.

[0057] Processor 10 can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the lens eccentricity acquisition method can be completed through integrated logic circuits in the hardware or software instructions within processor 10. The aforementioned processor 10 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0058] The memory 11 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device.

[0059] Bus 12 can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. Figure 3 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus 12 or one type of bus 12.

[0060] The memory 11 is used to store programs, such as programs corresponding to the lens eccentricity acquisition device. The lens eccentricity acquisition device includes at least one software function module that can be stored in the memory 11 in the form of software or firmware or embedded in the operating system (OS) of the terminal device. After receiving an execution instruction, the processor 10 executes the program to implement the lens eccentricity acquisition method.

[0061] Possibly, the terminal device provided in this application embodiment also includes a communication interface 13. The communication interface 13 is connected to the processor 10 via a bus.

[0062] In one possible implementation, the terminal device in this embodiment is an eccentricity meter. Based on the measured data (e.g., the eccentricity of the incident light surface and the eccentricity of the exit light surface), the eccentricity meter can execute the method provided in this embodiment to obtain the eccentricity of the exit light surface.

[0063] In one possible implementation, the terminal device provided in this embodiment is a computer device or a server. The terminal device can receive data obtained by the eccentricity meter (such as the incident light surface eccentricity and the eccentricity measurement of the exit light surface), and can execute the method provided in this embodiment to obtain the exit light surface eccentricity.

[0064] It should be understood that, Figure 3 The structure shown is only a partial schematic diagram of the terminal device; the terminal device may also include components that are larger than... Figure 3 The more or fewer components shown, or having the same Figure 3 The different configurations shown. Figure 3 The components shown can be implemented using hardware, software, or a combination thereof.

[0065] The lens eccentricity acquisition method provided in this application embodiment can be applied to, but is not limited to, [various applications]. Figure 3 For the terminal devices shown and the specific procedures, please refer to [link / reference]. Figure 4 The methods for obtaining lens eccentricity include S101 and S106, which are described in detail below.

[0066] S101, based on the measurement data of the eccentricity meter, obtains the measured values ​​of the eccentricity of the incident light surface and the eccentricity of the exit light surface.

[0067] It should be understood that there are no other mirrors between the incident surface and the eccentricity meter, so the eccentricity meter can directly obtain the eccentricity of the incident surface. However, there is an incident surface between the emitting surface and the eccentricity meter. The eccentricity of the incident surface will affect the eccentricity of the emitting surface, so the eccentricity of the emitting surface cannot be directly obtained; only the measured value of the eccentricity of the emitting surface can be obtained. It should be understood that the measured value of the eccentricity of the emitting surface is affected by the eccentricity of the incident surface R1.

[0068] S106, when the object distance of the incident light surface coincides with the spherical center image position of the exit light surface, the exit light surface eccentricity is obtained based on the first vertical axis magnification, the incident light surface eccentricity, and the measured value of the exit light surface eccentricity.

[0069] As mentioned earlier, the surface eccentricity can be determined based on the following expression:

[0070]

[0071] Based on the eccentricity measurements of the incident light surface and the exit light surface obtained by the eccentricity meter, this embodiment clarifies the interference of the incident light surface eccentricity on the exit light surface eccentricity measurement and accurately calculates the true exit light surface eccentricity.

[0072] In summary, this application provides a method for obtaining lens eccentricity. The lens includes an incident surface and an exit surface. Based on the measurement data of an eccentricity meter, the eccentricity measurements of the incident surface and the exit surface are obtained. When the object distance of the incident surface coincides with the spherical center image position of the exit surface, the eccentricity of the exit surface is obtained based on the first transverse magnification, the incident surface eccentricity, and the exit surface eccentricity measurement. This embodiment, based on the incident surface eccentricity and exit surface eccentricity measurements obtained by the eccentricity meter, clarifies the interference of the incident surface eccentricity on the exit surface eccentricity measurement, and accurately calculates the true exit surface eccentricity.

[0073] exist Figure 4 Based on this, regarding how to obtain the first vertical axis magnification, embodiments of this application also provide a possible implementation method, please refer to... Figure 5 Prior to S106, methods for obtaining lens eccentricity also included S102 and S103, which are described in detail below.

[0074] S102, the image distance of the incident surface is determined based on the refractive index of the incident surface, the refractive index of the medium, the radius of curvature of the incident surface, and the object distance of the incident surface.

[0075] Based on the object-image distance relationship of the refracting spherical surface, the relationship between the object distance to the incident surface (R1 surface) and the image distance to the incident surface can be obtained as follows:

[0076]

[0077] Based on this formula, we can deduce that:

[0078]

[0079] Where, n B Characterizing the refractive index of the lens under test, n A The refractive index of the medium can be air; r1 represents the radius of curvature of the incident surface (R1 surface); l′1 represents the image distance of the incident surface; and l1 represents the object distance of the incident surface.

[0080] In one possible implementation, the object distance from the incident surface coincides with the spherical center of the exit surface, such as... Figure 6As shown. Optionally, when using an eccentric meter for measurement, the focal point of the eccentric meter can be aligned with the center image of the surface to be measured. This allows us to obtain the object distance of surface R1 and the image distance of surface R3, both of which are the positions of the center image of surface R2. The center image is the reflected image of the sphere. If the light source is at the center of the mirror, the reflected light after incident on the mirror will focus at the center of the sphere, meaning the reflected light and incident light paths coincide. Figure 7 As shown.

[0081] When the object distance of the incident light surface coincides with the position of the spherical center image of the exit light surface, l1+d=r2, where d represents the lens thickness and r2 represents the radius of curvature of the exit light surface (R2 surface).

[0082] S103, based on the refractive index of the incident surface, the refractive index of the medium, the image distance of the incident surface, and the object distance of the incident surface, determine the first transverse magnification.

[0083] Optionally, the expression for the first vertical axis magnification is:

[0084]

[0085] exist Figure 4 Based on the content in S106, regarding how to obtain the eccentricity of the light-emitting surface, this application embodiment also provides a possible implementation method, please refer to... Figure 8 S106 includes S106-1, which is described in detail below.

[0086] S106-1, based on the first vertical axis magnification, the second vertical axis magnification, the vertical axis magnification of the eccentricity meter, the incident light surface eccentricity, and the measured value of the eccentricity of the exiting light surface, obtain the exiting light surface eccentricity.

[0087] Optionally, the surface eccentricity can be obtained based on the following expression:

[0088]

[0089] Please continue to refer to this. Figure 8 Regarding how to obtain the second vertical axis magnification, embodiments of this application also provide a possible implementation method, such as... Figure 8 As shown, prior to S108, the methods for obtaining lens eccentricity also include S104 and S105, which are described in detail below.

[0090] S104, determine the image distance of the light-emitting surface based on the object distance and the radius of curvature of the light-emitting surface.

[0091] Optionally, the image distance of the light surface can be obtained according to the following formula:

[0092]

[0093] Where r2 represents the radius of curvature of the light surface (R2 surface), l'2 represents the image distance of the light surface, and l2 represents the object distance of the light surface.

[0094] Optionally, l2 = l′1 - d, where l′1 represents the image distance to the incident light surface and d represents the lens thickness.

[0095] S105, determine the second vertical axis magnification based on the image distance and object distance of the light-emitting surface.

[0096] Alternatively, the second vertical axis magnification can be obtained according to the following formula:

[0097]

[0098] It should be understood that the light is refracted again from surface R1, but this time the direction of light propagation is from right to left, so it is redefined as surface R3 for differentiation. Optionally, embodiments of this application also provide a possible implementation of obtaining the transverse magnification (β3) of surface R3, please refer to the following.

[0099] l3 = l'2 - d;

[0100]

[0101]

[0102] Where r3 = -r1.

[0103] The lens eccentricity acquisition method provided in this application embodiment is highly applicable. It does not require additional complex operations during measurement; only data calculation and processing are needed to obtain the correct data. It can also be applied to the accurate calculation of the surface eccentricity of the R2 plane of a transmission eccentricity meter.

[0104] Please see Figure 9 , Figure 9 The present application provides a lens eccentricity acquisition device, which is optionally applied to the terminal device described above.

[0105] The lens eccentricity acquisition device includes an information acquisition unit 201 and a processing unit 202.

[0106] The information acquisition unit 201 is used to acquire the measured values ​​of the eccentricity of the incident light surface and the eccentricity of the exit light surface based on the measurement data of the eccentricity meter.

[0107] The processing unit 202 is used to obtain the eccentricity of the light-emitting surface based on the first vertical magnification, the eccentricity of the light-emitting surface, and the measured eccentricity of the light-emitting surface when the object distance of the light-emitting surface coincides with the spherical center image position of the light-emitting surface.

[0108] Optionally, the processing unit 202 is also used to obtain the eccentricity of the light-emitting surface based on the first vertical axis magnification, the second vertical axis magnification, the vertical axis magnification of the eccentricity meter, the eccentricity of the incident light surface, and the eccentricity measurement of the light-emitting surface.

[0109] In one possible implementation, the information acquisition unit 201 may execute S101 to S105 as described above, and the processing unit 202 may execute S106 as described above.

[0110] It should be noted that the lens eccentricity acquisition device provided in this embodiment can execute the method flow shown in the above-described method flow embodiment to achieve the corresponding technical effects. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above-described embodiments.

[0111] This application also provides a storage medium storing computer instructions and programs, which, when read and executed, perform the lens offset acquisition method described above. The storage medium may include memory, flash memory, registers, or a combination thereof.

[0112] The following provides a terminal device, which can be an eccentricity analyzer, a computer device, or a server device. This terminal device, for example... Figure 3 As shown, the above-described method for obtaining lens eccentricity can be implemented. Specifically, the terminal device includes: a processor 10, a memory 11, and a bus 12. The processor 10 may be a CPU. The memory 11 is used to store one or more programs, which, when executed by the processor 10, execute the lens eccentricity acquisition method of the above embodiment.

[0113] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0114] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0115] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0116] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0117] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative 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 included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A method for obtaining lens eccentricity, characterized in that, The lens includes an incident light surface and an exit light surface, and the method includes: Based on the measurement data of the eccentricity meter, the eccentricity of the incident light surface and the eccentricity of the emitting light surface are obtained. When the object distance of the incident light surface coincides with the spherical center image position of the emitting light surface, the eccentricity of the emitting light surface is obtained based on the first transverse magnification, the eccentricity of the incident light surface, and the measured value of the eccentricity of the emitting light surface. Wherein, the first vertical magnification is the ratio of the height of the image formed by the light source on the incident surface to the height of the light source; The step of obtaining the eccentricity of the light-emitting surface based on the first vertical magnification, the eccentricity of the incident light surface, and the measured eccentricity of the light-emitting surface includes: obtaining the eccentricity of the light-emitting surface based on the first vertical magnification, the second vertical magnification, the vertical magnification of the eccentricity meter, the eccentricity of the incident light surface, and the measured eccentricity of the light-emitting surface; wherein, the second vertical magnification is the ratio of the height of the image formed by the light source on the light-emitting surface to the height of the light source, and the vertical magnification of the eccentricity meter is the ratio of the height of the image formed by the light source on the eccentricity meter to the height of the light source.

2. The method for obtaining lens eccentricity as described in claim 1, characterized in that, Before obtaining the eccentricity of the light-emitting surface, the method further includes: The image distance of the incident surface is determined based on the refractive index of the incident surface, the refractive index of the medium, the radius of curvature of the incident surface, and the object distance of the incident surface. The first transverse magnification is determined based on the refractive index of the incident surface, the refractive index of the medium, the image distance of the incident surface, and the object distance of the incident surface.

3. The method for obtaining lens eccentricity as described in claim 1, characterized in that, Before obtaining the eccentricity of the light-emitting surface, the method further includes: The image distance of the light-emitting surface is determined based on the object distance of the light-emitting surface and the radius of curvature of the light-emitting surface; The second vertical magnification is determined based on the image distance and object distance of the light-emitting surface.

4. The method for obtaining lens eccentricity as described in claim 1, characterized in that, Based on the first vertical axis magnification, the second vertical axis magnification, the vertical axis magnification of the eccentricity meter, the incident light surface eccentricity, and the measured eccentricity of the exiting light surface, the expression for the exiting light surface eccentricity is obtained as follows: Wherein, β1 represents the first vertical axis magnification, β2 represents the second vertical axis magnification, β3 represents the reciprocal of β1, O1 represents the incident light surface eccentricity, and O2 represents the exit light surface eccentricity.

5. The method for obtaining lens eccentricity as described in claim 1, characterized in that, Based on the first transverse magnification, the incident surface eccentricity, and the measured eccentricity of the emitting surface, the expression for the eccentricity of the emitting surface is obtained as follows: Wherein, β1 represents the first vertical axis magnification, O1 represents the incident light surface eccentricity, and O2 represents the exit light surface eccentricity.

6. A device for obtaining lens eccentricity, characterized in that, The lens includes an incident light surface and an exit light surface, and the lens eccentricity acquisition device includes: The information acquisition unit is used to acquire the incident surface eccentricity and the eccentricity measurement value of the light-emitting surface based on the measurement data of the eccentricity meter. The processing unit is configured to, when the object distance of the incident light surface coincides with the spherical center image position of the emitting light surface, obtain the eccentricity of the emitting light surface based on the first transverse magnification, the eccentricity of the incident light surface, and the measured value of the eccentricity of the emitting light surface. Wherein, the first vertical magnification is the ratio of the height of the image formed by the light source on the incident surface to the height of the light source; The step of obtaining the eccentricity of the light-emitting surface based on the first vertical magnification, the incident surface eccentricity, and the measured eccentricity of the light-emitting surface includes: obtaining the eccentricity of the light-emitting surface based on the first vertical magnification, the second vertical magnification, the vertical magnification of the eccentricity meter, the incident surface eccentricity, and the measured eccentricity of the light-emitting surface; wherein, the second vertical magnification is the ratio of the height of the image formed by the light source on the light-emitting surface to the height of the light source, and the vertical magnification of the eccentricity meter is the ratio of the height of the image formed by the light source on the eccentricity meter to the height of the light source.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method as described in any one of claims 1-5.

8. A terminal device, characterized in that, include: Processor and memory, the memory being used to store one or more programs; When the one or more programs are executed by the processor, the method as described in any one of claims 1-5 is implemented.

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