Insert molded adjustable focus prescription composite lens assembly, system and assembly calibration method

Abstract

The application discloses an insert type adjustable focus prescription composite lens assembly, system and assembly calibration method applied to the field of eye optics, the composite lens comprises a fixed prescription lens base body, an adjustable focus lens module, an alignment and foolproof structure, a sealing and stress release structure, an electrical connection interface and a traceable data unit, and the application also provides a corresponding assembly calibration method and an eyeglass system comprising the lens. The application realizes the modularization of the adjustable focus lens module of the prescription correction and dynamic focusing, reduces the induced prism and wavefront error through the geometric alignment and optical calibration double closed loop control, establishes a full life cycle traceable system, and has good mass production and wearing experience.

Description

Technical Field

[0001] This invention relates to the field of optometry, and particularly to an insert-type adjustable focus prescription composite lens assembly, system, and assembly and calibration method. Background Technology

[0002] Presbyopia or near-field reading scenarios require rapid switching between near and far distances. Existing solutions include switching between multiple pairs of glasses, progressive multifocal lenses, and actively adjustable focusing lenses. While actively adjustable focusing lenses offer the advantage of "switching at any time," they often face challenges in engineering implementation: 1. Heavy appearance and frame limitations: Adjustable focusing devices require electrodes, seals and drive interfaces, resulting in complex lens / frame structures and increased thickness.

[0003] 2. Difficulty in superimposing prescription corrections: When prescription corrections such as astigmatism (Cylinder / Axis) are superimposed on the same optical element as adjustable focus (Add), the design and manufacturing complexity increases significantly.

[0004] 3. Difficult assembly alignment: Inconsistency between the optical center of the module and the optical center of the fixed lens can induce prism, aberrations and discomfort in both eyes; small tilt angles and decentering can amplify wavefront errors.

[0005] 4. Incompatible mass production processes: Industrialization processes such as edge trimming, coating, sweat / humid heat resistance, impact resistance, rework and replacement can easily create a gap between "laboratory prototype and mass production".

[0006] 5. Lack of traceability system: Modules, prescriptions, calibration parameters and quality indicators are not strongly linked, resulting in high costs for large-scale delivery and after-sales maintenance.

[0007] Therefore, there is a need for an insert-type composite lens structure that is mass-producible, replaceable, calibrated, and traceable, in order to fundamentally solve the productization bottleneck. Summary of the Invention

[0008] The core of this invention lies in embedding the adjustable focus lens module into the outer fixed prescription lens, thereby achieving a mass-producible solution for the entire chain of appearance, edge cutting, coating, alignment, sealing, calibration, and traceability.

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] An insert-type adjustable-focus prescription compound lens assembly, including: A fixed prescription lens substrate has predetermined prescription refractive parameters and a receiving cavity is formed thereon for accommodating an adjustable lens module, the module receiving cavity defining an assembly reference coordinate system Σ_F; The adjustable lens module is located within the module housing cavity. The adjustable lens module includes an effective optical aperture area and a non-optical edge area, and can generate an additional refractive power ΔD under external driving action. The alignment and error prevention structure is used to limit the adjustable lens module relative to the fixed prescription lens substrate in at least one of translation, rotation and tilt, so that the optical center o_M of the adjustable lens module and the prescription optical center o_F of the fixed prescription lens substrate meet the preset alignment tolerance. A sealing and stress-relief structure is used to form a sealed interface between the adjustable lens module and the fixed prescription lens substrate and to reduce residual stress during assembly. An electrical connection interface, located in the non-optical edge area, is used to connect the focusable lens module to an external drive electronics system; The traceability data unit is used to store the serial number, assembly reference parameters, and calibration parameters associated with the composite lens assembly, so as to form a closed-loop traceability from assembly to calibration to after-sales service.

[0011] Furthermore, the fixed prescription lens substrate is at least one of a refractive prescription lens, a diffractive Fresnel prescription lens, or a planar prescription lens, and the fixed prescription lens substrate undertakes prescription correction, while the adjustable lens module undertakes additional focusing diopter ΔD.

[0012] Furthermore, the module receiving cavity includes at least two stepped surfaces and an annular stop surface to define the axial position of the adjustable lens module and suppress assembly tilt.

[0013] Furthermore, the effective aperture diameter of the adjustable lens module is 15mm to 30mm, and repeated assembly is achieved through a replaceable adjustable lens module housing.

[0014] Furthermore, the alignment and error-proofing structure includes visual reference marks and mechanical keys, wherein the visual reference marks are used for machine vision alignment, and the mechanical keys are used to restrict rotational degrees of freedom.

[0015] Furthermore, the sealing and stress-relieving structure includes at least one of an O-ring, an optically clear adhesive layer, and a compliant support pad layer, and provides an adjustable alignment window prior to curing to allow for rework.

[0016] Furthermore, the electrical connection interface includes a flexible flat cable or conductive adhesive connector, and is equipped with stress-relieving traces to keep bending strain away from the effective optical aperture area.

[0017] Furthermore, the electrical connection interface is located in the non-optical region at the edge of the fixed prescription lens substrate, and its position, angle, or number is configured to meet the constraints of the slit and frame space and reduce interference with the sealing structure.

[0018] Furthermore, the traceability data unit includes a non-volatile memory and stores at least the adjustable lens module serial number, the assembly reference deviation vector Δx, and the calibrated OPD(u) or ΔD(u) mapping parameters, where u is the drive control quantity.

[0019] Furthermore, the composite lens assembly also includes a surface layer for coating and durability, the surface layer being disposed at least at one of the outer surface of the fixed prescription lens substrate and the outer surface of the protective cover, the surface layer including at least one of a hardening layer, an antireflective layer and a hydrophobic and oleophobic layer, and not covering the conductive area of ​​the electrical connection interface.

[0020] Furthermore, the composite lens assembly also includes a temperature sensor, which is located in the non-optical edge area of ​​the adjustable lens module, the housing of the adjustable lens module, or the inner side of the frame adjacent to the adjustable lens module. The temperature sensor is used to collect nearby temperature data and compensate for the temperature drift of the refractive power ΔD, and write the compensation coefficient into the traceability data unit.

[0021] An insert-type adjustable-focus prescription compound lens system includes: a frame, at least one compound lens assembly mounted on the frame, and a drive electronic system. The drive electronic system includes a controller and a power supply for the adjustable-focus lens module, for applying a drive signal to the adjustable-focus lens module to cause the additional refractive power ΔD to vary within a predetermined range. The drive electronic system is communicatively connected to a traceability data unit to load individual calibration parameters.

[0022] Furthermore, the controller performs independent fine-tuning on the left and right eye composite lens assemblies respectively. The independent fine-tuning objects include the planar decentering amount Δx / Δy, rotation angle Δθ, tilt compensation when necessary, and consistency fine-tuning of the additional refractive power ΔD_L or ΔD_R of the left and right eyes, so that the difference between ΔD_L or ΔD_R of the two eyes meets the comfort threshold, that is, the effective aperture diameter is 15mm-30mm, preferably about 20mm; the step height difference of the module housing cavity is 80μm-300μm; and the OCA thickness is 20μm-150μm, etc.

[0023] Furthermore, when the controller detects a fault or low battery, it switches the adjustable lens module to a preset safe state, causing the eyeglass system to degrade to only the fixed prescription lens matrix providing basic visual correction function. The preset safe state means that when there is low battery, overheating, abnormal drive, or communication, the adjustable lens module is switched to ΔD≈0D or a preset safe additional power, and the fixed prescription lens continues to provide basic visual correction function.

[0024] Furthermore, it also includes a user interaction component, which is at least one of a button, touch, gesture sensor or voice interface, used to switch between a remote mode and a near mode ΔD.

[0025] Furthermore, it also includes at least one of a distance estimation adjustable focus lens module and a gaze estimation adjustable focus lens module, used to estimate the target distance and output focusing commands to achieve automatic or semi-automatic focusing.

[0026] Furthermore, the controller generates audit logs and, together with the traceability data unit, forms a cross-device traceability data package for after-sales diagnostics, parameter rollback, and consistency verification.

[0027] An assembly and calibration method for insert-type adjustable-focus prescription compound lens assemblies includes the following steps: S1. Machining or forming a module receiving cavity on the fixed prescription lens substrate and defining the assembly reference coordinate system Σ_F; S2. Read the serial number of the adjustable focus lens module and write it into the traceability data unit; S3. Assemble the adjustable lens module into the module receiving cavity according to at least one of the visual reference mark and mechanical key, so that o_M and o_F meet the preset alignment tolerance; S4. Form a sealed interface and perform alignment retesting before curing; S5. Connect the drive electronic system and perform wavefront, diopter or imaging measurement on the composite lens assembly to obtain the assembly error parameter Δx. S6. Calculate the compensation control quantity u* based on the assembly error parameters, and write u* and the measurement results into the traceability data unit; S7. After acceptance, complete the solidification and packaging and output the traceability data packet.

[0028] Furthermore, the assembly error parameter Δx in step S5 includes at least one of the following: core removal amount, tilt angle, rotation angle, and height deviation. The total wavefront error is decomposed into geometric terms and adjustable focus terms using an error decomposition model.

[0029] Furthermore, in step S6, the amount of induced prism is estimated based on the decentricity and system focal length, and the induced prism is compensated by adjusting the driving parameters of the adjustable focus lens module, and the compensation amount is recorded as wearing parameters.

[0030] Furthermore, in step S4, a rework window [t0, t1] is set before sealing and curing. When the alignment retest or measurement result does not meet the threshold, the disassembly-realignment-recuring process is executed within the rework window.

[0031] Furthermore, the traceability data packet includes at least one of a hash digest of key parameters and a digital signature, so that after-sales reading can verify that the assembly and calibration parameters have not been tampered with.

[0032] Compared with the prior art, the advantages of this invention are: (1) This solution maintains an appearance and wearing experience close to that of ordinary glasses.

[0033] (2) By embedding the adjustable focus lens module into the outer fixed prescription lens, wherein the outer fixed prescription is responsible for stable correction (including astigmatism), and the embedded adjustable focus lens module provides adjustable Add, the modular design of the adjustable focus lens supports replacement or reuse.

[0034] (3) Reduce induced prism and wavefront errors through a double closed loop of “geometric alignment + post-assembly optical calibration”.

[0035] (4) By tracing the data package, the prescription, adjustable focus lens module, calibration and quality are strongly bound together, realizing a mass-producible solution for the entire chain of appearance, edge cutting, coating, alignment, sealing, calibration and traceability. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall architecture of the composite lens system of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the composite lens of the present invention; Figure 3 This is a schematic cross-sectional view of the fixed prescription lens receiving cavity of the present invention; Figure 4 This is a schematic diagram of the optical center alignment and assembly coordinate system of the present invention; Figure 5 This is an example curve of the target OPD(r) of the adjustable focus lens module of the present invention; Figure 6 This is a schematic diagram of the edge electrical connection and stress relief of the present invention; Figure 7 This is a schematic diagram of the post-assembly calibration and traceability closed-loop process of the present invention; Figure 8 This is a schematic diagram illustrating the error budget / tolerance sensitivity of the present invention; Figure 9 This is a schematic diagram of the Ptrace field structure in the data tracing package of this invention; Figure 10 This is a schematic diagram illustrating the application of the remote / near-field switching of the present invention. Detailed Implementation

[0037] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0038] like Figures 1-3 An insert-type adjustable-focus prescription composite lens assembly includes a fixed prescription lens substrate, an adjustable-focus lens module, an alignment and mis-detection structure, a sealing and stress-relieving structure, an electrical connection interface, and a traceability data unit, such as... Figure 10 This is a schematic diagram illustrating the application of the adjustable focus prescription composite lens assembly of the present invention in switching between near and far vision.

[0039] A fixed-prescription lens substrate has predetermined prescription refractive parameters and a receiving cavity formed thereon for accommodating an adjustable-focusing lens module. The module receiving cavity defines an assembly reference coordinate system Σ_F. The fixed-prescription lens substrate is at least one of a refractive prescription lens, a diffractive Fresnel prescription lens, or a planar prescription lens. The fixed-prescription lens substrate provides prescription correction, and the adjustable-focusing lens module provides additional focusing refractive power ΔD. Figure 3 The module receiving cavity includes at least two stepped surfaces and an annular stop surface to define the axial position of the adjustable focus lens module and suppress assembly tilting, wherein the axial step height difference of the module receiving cavity is 80μm to 300μm.

[0040] An adjustable-focus lens module, located within a module housing cavity, includes an effective optical aperture region and a non-optical edge region. It is capable of generating an additional refractive power ΔD under external actuation. The effective aperture diameter of the adjustable-focus lens module is 15mm to 30mm, preferably 20mm. The adjustable-focus lens module is reconfigurable via a replaceable adjustable-focus lens module housing. This housing is located outside the non-optical edge region to protect the electrodes, leads, and sealing boundaries, and cooperates with the module housing cavity for reconfigurable assembly. Figure 5 , representing the example curves of the target OPD(r) of the adjustable lens module in the closed and open states.

[0041] Alignment and error-proofing structures are used to limit the adjustable lens module relative to the fixed prescription lens substrate in at least one of translation, rotation, and tilt, such as... Figure 4 The optical center o_M of the adjustable lens module and the prescription optical center o_F of the fixed prescription lens substrate meet the preset alignment tolerance. The alignment and error prevention structure includes a visual reference mark and a mechanical key. The visual reference mark is used for machine vision alignment, and the mechanical key is used to restrict the rotational degree of freedom.

[0042] like Figure 3 A sealing and stress-relief structure is used to form a sealed interface between an adjustable focus lens module and a fixed prescription lens substrate and to reduce assembly residual stress. The sealing and stress-relief structure includes at least one of an O-ring, an optically clear adhesive layer, and a compliant support pad layer, and provides an adjustable alignment window before curing to allow rework. The O-ring has a compression rate of 5% to 20%, and the optically clear adhesive layer has a thickness of 20 μm to 150 μm.

[0043] An electrical connection interface, located in a non-optical edge region, connects the adjustable lens module to an external drive electronics system. This interface includes a flexible flat cable or conductive adhesive connector (FPC) and features stress-relieving traces to minimize bending strain from the effective optical aperture area. The electrical connection interface is situated in the non-optical edge region of the fixed prescription lens substrate, and its position, angle, or number is configured to meet edge and frame space constraints and reduce interference with the sealing structure. Figure 6 This shows the arrangement of pad-flexible flat cable (FFC)-stress-relief loop traces, where electrical connections tend to be located on the outer periphery of the lens slice. The FFC / FPC reduces the risk of pad peeling due to wearing and assembly tension through stress looping and is located away from the effective optical aperture.

[0044] like Figure 9 The traceability data unit is used to store the serial number, assembly reference parameters and calibration parameters associated with the composite lens assembly to form a closed-loop traceability of assembly-calibration-after-sales service. The traceability data unit includes a non-volatile memory and stores at least the serial number of the adjustable lens module, the assembly reference deviation vector Δx and the calibration-obtained OPD(u) or ΔD(u) mapping parameters, where u is the drive control quantity.

[0045] The composite lens assembly also includes a surface layer for coating and durability, which is disposed on at least one of the outer surface of the fixed prescription lens substrate and the outer surface of the protective cover. The surface layer includes at least one of a hardening layer, an antireflective layer and a hydrophobic and oleophobic layer, and does not cover the conductive area of ​​the electrical connection interface.

[0046] The composite lens assembly also includes a temperature sensor, which is located in the non-optical edge area of ​​the adjustable lens module, the housing of the adjustable lens module, or the inner side of the frame adjacent to the adjustable lens module. The temperature sensor is used to collect nearby temperature data and compensate for the temperature drift of the refractive power ΔD, and write the compensation coefficient into the traceability data unit.

[0047] An insert-type adjustable-focus prescription compound lens system includes: a frame, at least one compound lens assembly mounted on the frame, and a drive electronic system. The drive electronic system includes a controller and a power supply for the adjustable-focus lens module, for applying a drive signal to the adjustable-focus lens module to cause the additional refractive power ΔD to vary within a predetermined range. The drive electronic system is communicatively connected to a traceability data unit to load individual calibration parameters.

[0048] The controller performs independent fine-tuning on the left and right eye composite lens assemblies. The independent fine-tuning objects include the planar decentering amount Δx / Δy, rotation angle Δθ, tilt compensation when necessary, and consistency fine-tuning of the additional refractive power ΔD_L or ΔD_R of the left and right eyes, so that the difference between ΔD_L or ΔD_R of the two eyes meets the comfort threshold, that is, the effective aperture diameter is 15mm-30mm, preferably about 20mm; the step height difference of the module housing cavity is 80μm-300μm; and the OCA thickness is 20μm-150μm, etc.

[0049] When the controller detects a fault or low battery, it switches the adjustable lens module to a preset safe state, causing the eyeglass system to degrade to only the fixed prescription lens matrix providing basic visual correction function. The preset safe state means that when there is low battery, overheating, abnormal drive, or communication, the adjustable lens module is switched to ΔD≈0D or a preset safe additional power, and the fixed prescription lens continues to provide basic visual correction function.

[0050] The composite lens system also includes a user interaction component, which is at least one of a button, touch, posture sensor or voice interface, for switching between far-field mode and near-field mode ΔD.

[0051] The composite lens system also includes at least one of a distance estimation adjustable focus lens module and a gaze estimation adjustable focus lens module, used to estimate the target object distance and output focusing commands to achieve automatic or semi-automatic focusing.

[0052] The controller generates audit logs and, together with the traceability data unit, forms a cross-device traceability data package for after-sales diagnostics, parameter rollback, and consistency verification.

[0053] An assembly and calibration method for insert-type adjustable-focus prescription compound lens assemblies includes the following steps: S1. Machining or forming a module receiving cavity on the fixed prescription lens substrate and defining the assembly reference coordinate system Σ_F; S2. Read the serial number of the adjustable focus lens module and write it into the traceability data unit; S3. Assemble the adjustable lens module into the module receiving cavity according to at least one of the visual reference mark and mechanical key, so that o_M and o_F meet the preset alignment tolerance; S4. Form a sealed interface and perform alignment retest before curing. Set a rework window [t0,t1] before sealing and curing. When the alignment retest or measurement result does not meet the threshold, perform the disassembly-realignment-recuring process within the rework window. S5. Connect the drive electronic system and perform wavefront, diopter, or imaging measurements on the composite lens assembly to obtain the assembly error parameter Δx, such as... Figure 6The assembly error parameter Δx includes at least one of the following: core removal amount, tilt angle, rotation angle, and height deviation. The total wavefront error is decomposed into geometric terms and adjustable focus terms through an error decomposition model.

[0054] S6. Calculate the compensation control amount u* based on the assembly error parameters, and write u* and the measurement results into the traceability data unit. Specifically, estimate the induced prism amount based on the decentric amount and the system focal length, and compensate the induced prism by adjusting the driving parameters of the adjustable focus lens module, and record the compensation amount as the wearing parameter. S7. After acceptance, complete the solidification and packaging and output the traceability data packet. The traceability data packet includes at least one of the hash digest of key parameters and digital signature, so that the assembly and calibration parameters can be verified to have not been tampered with when read by after-sales service.

[0055] Specifically, in steps S4-S7, wavefront, refractive power, or imaging measurements are performed, and the control quantity u* is calculated based on the compensation model. The model is u*=argmin_u ||W_meas-W_target(u)||_2^2 + λ||u-u_0||_2^2, where W_meas is the measured wavefront, W_target(u) is the target wavefront corresponding to the control quantity u, u_0 is the initial control quantity, and λ is the regularization coefficient. The compensated driving parameters, error decomposition results, and acceptance conclusions are written into the traceability data unit.

[0056] For the assembly and calibration method of insert-type adjustable focus prescription compound lens assemblies, the following additional details are included in the specific implementation: (a) Optical superposition model of prescription and dynamic addition (1) Prescription power matrix (including astigmatism) Write the prescription (spherical lens S, cylindrical lens C, axial position A) as a 2×2 power matrix FRx:

[0057] .

[0058] The dynamic Add is approximated as the power Φadd of an axisymmetric thin lens, and its matrix form is: ; Equivalent power matrix of composite lenses:

[0059] (2) Target wavefront / phase and OPD For the design wavelength lambda and the equivalent focal length f (Φ=1 / f), the target phase of the axisymmetric Add is:

[0060] Corresponding optical path difference (OPD): ; If the adjustable lens module uses Fresnel reset (phase wrapping), then: , Where H is the reset height (determined by the liquid crystal thickness and the achievable Delta neff).

[0061] (II) Regarding the induced prism and wavefront errors caused by alignment errors, the specific details are as follows: (1) Prentice approximation (heart-removing prism): Under the thin lens approximation, the decentering amount c (in cm) results in the prism power P (prism diopter): P≈ c,Φ_{tot}]; Among them Phi tot This represents the equivalent refractive power of the compound lens (which can be equivalent to a spherical lens). Therefore, the alignment threshold can be determined by the allowable upper limit of the prism, P. max roll out:

[0062] (2) Inclination error and equivalent wedge angle: The tilt angle Delta theta of the adjustable lens module can be equivalently represented by introducing a wedge angle term, which approximately leads to an increase in the astigmatism / coma term. This can be constrained using wavefront RMS: RMS(Δθ) ≤ RMS_{max}; In practical calibration, the Zernike coefficient a can be used. n Monitor tilt-related terms (such as coma Z7 / Z8, etc.), specifically, such as Figure 8 This illustrates the sensitivity of different tolerance sources to image quality, which can be used to guide structural design prioritization.

[0063] (iii) If Figure 7 Regarding post-assembly calibration, from measurement to compensation parameters, the specific details are as follows: (1) Wavefront fitting (Zernike): The measured wavefront Wρ,φ) (rho in[0,1] normalized aperture) expands as follows:

[0064] Define the objective function (example): , θ includes core removal compensation, drive gain, temperature coefficient, etc.

[0065] (2) Regarding the calibration model Φ_{add}(u,T) Let the control variable `mathbf{u}` be the driving voltage vector or codeword, and the temperature be `T`. A quadratic model can be used (example): Where g(u) is the mapping from the control quantity to the equivalent voltage; alpha, beta, and gamma can be further written as:

[0066]

[0067] The set of calibration parameters is denoted as boldsymbol thetacal.

[0068] (iv) Regarding the traceability data package and acceptance First, the traceability data packet can be formalized as:

[0069] Example of acceptance rules:

[0070] .

[0071] Alternatively, the assembly and calibration method for the insert-type adjustable-focus prescription compound lens assembly may also be adapted to include a non-transitory computer-readable storage medium and an electronic device with the storage medium. The storage medium stores computer program instructions, which, when executed by a processor, are used to implement the above method or to calculate a compensation control quantity u based on measurement results and generate a traceability data packet. The electronic device also includes a processor, which, when executing the instructions, implements the assembly and calibration method for the compound lens assembly and is used to implement the drive and traceability control of the insert-type adjustable-focus prescription compound lens system.

[0072] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. An insert-type adjustable-focus prescription composite lens assembly, characterized in that: include: A fixed prescription lens substrate having predetermined prescription refractive parameters and having a receiving cavity formed thereon for accommodating an adjustable lens module, the module receiving cavity defining an assembly reference coordinate system Σ_F; An adjustable focus lens module is located within the module housing cavity. The adjustable focus lens module includes an effective optical aperture area and a non-optical edge area, and is capable of generating an additional refractive power ΔD under external driving action. The alignment and error prevention structure is used to limit the adjustable lens module relative to the fixed prescription lens substrate in at least one of translation, rotation and tilt, so that the optical center o_M of the adjustable lens module and the prescription optical center o_F of the fixed prescription lens substrate meet the preset alignment tolerance. The alignment and error prevention structure includes a visual reference mark and a mechanical key, wherein the visual reference mark is used for machine vision alignment and the mechanical key is used to restrict rotational degrees of freedom; A sealing and stress-relieving structure is used to form a sealing interface between the adjustable lens module and the fixed prescription lens substrate and to reduce assembly residual stress. An electrical connection interface, located in the non-optical edge region, is used to connect the adjustable lens module to an external drive electronic system; The traceability data unit is used to store the serial number, assembly reference parameters and calibration parameters associated with the composite lens assembly, so as to form a closed-loop traceability of assembly-calibration-after-sales service.

2. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The fixed prescription lens substrate is at least one of a refractive prescription lens, a diffractive Fresnel prescription lens, or a planar prescription lens, and the fixed prescription lens substrate undertakes prescription correction, while the adjustable lens module undertakes additional focusing diopter ΔD.

3. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The module receiving cavity includes at least two stepped surfaces and an annular stop surface to define the axial position of the adjustable lens module and suppress assembly tilt.

4. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The effective aperture diameter of the adjustable lens module is 15mm to 30mm, and the adjustable lens module can be repeatedly assembled and replaced through a replaceable adjustable lens module housing.

5. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The sealing and stress-relieving structure includes at least one of an O-ring, an optically clear adhesive layer, and a compliant support pad, and provides an adjustable alignment window before curing to allow for rework.

6. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The electrical connection interface includes a flexible flat cable or conductive adhesive connector, and is provided with stress relief traces to keep the bending strain away from the effective optical aperture area.

7. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The electrical connection interface is located in the non-optical region at the edge of the fixed prescription lens substrate, and its position, angle, or number is configured to meet the constraints of the slit and frame space and reduce interference with the sealing structure.

8. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The traceability data unit includes a non-volatile memory and stores at least the adjustable lens module serial number, the assembly reference deviation vector Δx, and the calibrated OPD(u) or ΔD(u) mapping parameters, where u is the drive control quantity.

9. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The composite lens assembly further includes a surface layer for coating and durability, the surface layer being disposed at at least one of the outer surface of the fixed prescription lens substrate and the outer surface of the protective cover, the surface layer including at least one of a hardening layer, an antireflective layer and a hydrophobic and oleophobic layer, and not covering the conductive area of ​​the electrical connection interface.

10. The insert-type adjustable-focus prescription composite lens assembly according to claim 1, characterized in that: The composite lens assembly also includes a temperature sensor, which is located in the non-optical edge area of ​​the adjustable lens module, the housing of the adjustable lens module, or the inner side of the frame adjacent to the adjustable lens module. The temperature sensor is used to collect nearby temperature data and compensate for the temperature drift of the refractive power ΔD, and write the compensation coefficient into the traceability data unit.

11. A system comprising an insert-type adjustable-focus prescription composite lens as described in claim 1, characterized in that: include: The lens frame, at least one composite lens assembly mounted on the lens frame, and a drive electronic system, the drive electronic system including a controller and a power supply for a focusable lens module, for applying a drive signal to the focusable lens module to cause the additional refractive power ΔD to vary within a predetermined range; wherein the drive electronic system is communicatively connected to the traceability data unit to load individual calibration parameters.

12. The insert-type adjustable-focus prescription compound lens system according to claim 11, characterized in that: The controller performs independent fine-tuning on the left and right eye composite lens assemblies respectively. The independent fine-tuning objects include the planar decentricity Δx / Δy, rotation angle Δθ, tilt compensation when necessary, and consistency fine-tuning of the additional refractive power ΔD_L or ΔD_R of the left and right eyes, so that the difference between ΔD_L and ΔD_R of the two eyes meets the comfort threshold.

13. The insert-type adjustable-focus prescription compound lens system according to claim 11, characterized in that: When the controller detects a fault or low battery, it switches the adjustable lens module to a preset safe state, causing the eyeglass system to degrade to provide basic visual correction functions only by the fixed prescription lens matrix.

14. The insert-type adjustable-focus prescription compound lens system according to claim 11, characterized in that: It also includes a user interaction component, which is at least one of a button, touch, gesture sensor or voice interface, for switching between a remote mode and a near mode ΔD.

15. The insert-type adjustable-focus prescription compound lens system according to claim 11, characterized in that: It also includes at least one of a distance estimation adjustable focus lens module and a gaze estimation adjustable focus lens module, used to estimate the target object distance and output focusing commands to achieve automatic or semi-automatic focusing.

16. The insert-type adjustable-focus prescription compound lens system according to claim 11, characterized in that: The controller generates audit logs and, together with the traceability data unit, forms a cross-device traceability data package for after-sales diagnostics, parameter rollback, and consistency verification.

17. An assembly and calibration method for an insert-type adjustable-focus prescription compound lens assembly as described in claim 1, characterized in that: Includes the following steps: S1. Machining or forming a module receiving cavity on the fixed prescription lens substrate and defining the assembly reference coordinate system Σ_F; S2. Read the serial number of the adjustable focus lens module and write it into the traceability data unit; S3. Assemble the adjustable focus lens module into the module receiving cavity according to at least one of the visual reference mark and mechanical key, so that o_M and o_F meet the preset alignment tolerance; S4. Form a sealed interface and perform alignment retesting before curing; S5. Connect the drive electronic system and perform wavefront, diopter or imaging measurement on the composite lens assembly to obtain the assembly error parameter Δx. S6. Calculate the compensation control quantity u* based on the assembly error parameters, and write u* and the measurement result into the traceability data unit; S7. After acceptance, complete the solidification and packaging and output the traceability data packet.

18. The assembly and calibration method for the insert-type adjustable-focus prescription compound lens assembly according to claim 17, characterized in that: The assembly error parameter vector Δx in step S5 includes at least one of the following: core removal amount, tilt angle, rotation angle, and height deviation. The total wavefront error is decomposed into geometric terms and adjustable focus terms through an error decomposition model.

19. The assembly and calibration method for the insert-type adjustable-focus prescription compound lens assembly according to claim 17, characterized in that: In step S6, the amount of induced prism is estimated based on the decentricity and system focal length, and the induced prism is compensated by adjusting the driving parameters of the adjustable focus lens module, and the compensation amount is recorded as wearing parameters.

20. The assembly and calibration method for the insert-type adjustable-focus prescription compound lens assembly according to claim 17, characterized in that: In step S4, a rework window [t0, t1] is set before sealing and curing. When the alignment retest or measurement result does not meet the threshold, the disassembly-realignment-recuring process is executed within the rework window.

21. The assembly and calibration method for the insert-type adjustable-focus prescription compound lens assembly according to claim 17, characterized in that: The traceability data packet includes at least one of a hash digest of key parameters and a digital signature, so that after-sales reading can verify that the assembly and calibration parameters have not been tampered with.

Images