Manufacturing system for myopia control lenses and device for generating optical structure parameters thereof

Abstract

This invention provides a myopia control lens manufacturing system and an optical structure parameter generation device thereof. The optical structure parameter generation device predicts the future axial elongation of a human based on clinical ophthalmological data and sets this future axial elongation as an optimization target. The device also calculates optical field parameters for controlling myopia based on this optimization target, and generates optical structure parameters for manufacturing myopia control lenses based on these optical field parameters.

Claims

1. An apparatus for generating optical structural parameters for myopia control lenses, comprising: a storage device for storing ophthalmic clinical data of a human being; a processor electrically connected to the storage device and configured to: predict a future axial elongation of the human being based on the ophthalmic clinical data; set the future axial elongation as an optimization target; calculate optical field parameters for controlling myopia based on the optimization target; and generate optical structural parameters for manufacturing myopia control lenses based on the optical field parameters; and a transceiver electrically connected to the storage device and the processor and configured to: receive the ophthalmic clinical data of the human being from an optical measurement device; and transmit the optical structural parameters to an optical lens manufacturing apparatus so that the optical lens manufacturing apparatus manufactures myopia control lenses based on the optical structural parameters.

2. The optical structure parameter generation apparatus as described in claim 1, wherein, This ophthalmological clinical data includes vision information during the myopia control process.

3. The optical structure parameter generation apparatus as described in claim 1, wherein, The optical field parameters correspond to at least one of spherical aberration distribution, peripheral defocus distribution, scattering density distribution, spatial frequency contrast modulation weight, and specified band energy weight; wherein the spherical aberration distribution is determined under the condition of a pupil diameter of 4 mm, and the positive spherical aberration intensity of the spherical aberration distribution is between 0.35 μm and 0.45 μm; and wherein the peripheral defocus distribution corresponds to the range of ±20 degrees to ±30 degrees of the periphery of the retina.

4. The optical structure parameter generation apparatus as described in claim 3, wherein, This processor is used to: reduce the contrast weight of low and medium spatial frequencies; set the low frequency contrast to greater than 80%, the medium frequency contrast to between 40% and 80%, and the high frequency contrast to between 10% and 40%; and set the suppression rate of the blue light band of 400 nm to 500 nm to greater than 30% and the transmittance of the red light band of 650 nm to 700 nm to greater than 75%.

5. The optical structure parameter generation apparatus as described in claim 3, wherein, The ophthalmological clinical data includes at least one of the following: axial length information, corneal topography, peripheral refractive distribution, pupillary dynamics information, accommodation response, near vision duration, wearing time, age, growth rate, and risk stratification indicators.

6. The optical structure parameter generation apparatus as described in claim 3, wherein, The optical structure parameters correspond to at least one of the following: spherical aberration intensity, spherical aberration radius, microstructure aperture size, microstructure spacing, microstructure depth, scattering structure density, and spatial frequency contrast suppression segment.

7. The optical structure parameter generating apparatus as described in claim 6, wherein, The scattering structure density is arranged in an aperiodic scattering array within a diameter range of 6 mm to 12 mm from the center of the myopia control lens. The density of the aperiodic scattering array increases from the inside to the outside, and the array density on the temporal side is higher than that on the nasal side. The optical modulation effect on the temporal side is configured to be 1.2 to 1.4 times that on the nasal side.

8. The optical structure parameter generating apparatus as described in claim 6, wherein, The microstructure has a pore size between 0.08 micrometers and 25 micrometers, a spacing between 0.2 micrometers and 25 micrometers, and a depth between 0.08 micrometers and 2.5 micrometers.

9. The optical structure parameter generating apparatus as described in claim 8, wherein, When the myopia control lens is a soft contact lens or a colored contact lens, the pore size of the microstructure is between 0.08 micrometers and 0.3 micrometers, and the depth of the microstructure is between 0.08 micrometers and 0.5 micrometers.

10. The optical structure parameter generation apparatus as described in claim 8, wherein, When the myopia control lens is a frame lens, the pore size of the microstructure is between 10 micrometers and 25 micrometers, and the depth of the microstructure is between 0.8 micrometers and 2.5 micrometers.

11. The optical structure parameter generation apparatus as described in claim 8, wherein, When the myopia control lens is an extended reality glasses, the aperture size of the microstructure is expressed as a grating period and the grating period is between 0.3 micrometers and 0.5 micrometers, and the depth of the microstructure is between 0.08 micrometers and 0.15 micrometers.

12. The optical structure parameter generating apparatus as described in claim 1, wherein, The processor is also used to: set the human binocular vision abnormality as a sub-optimization target; calculate optical field parameters for controlling myopia and adjusting binocular vision function based on the optimization target and the sub-optimization target; and generate optical structure parameters for manufacturing lenses with myopia control and binocular vision function adjustment based on the optical field parameters.

13. The optical structure parameter generating apparatus as described in claim 12, wherein, The optical field parameters correspond to at least one of the following: spherical aberration distribution, peripheral defocus distribution, scattering density distribution, contrast modulation weight of spatial frequency, and energy weight of a specified band; and at least one of parallax, temporal modulation, and regional light field.

14. The optical structure parameter generation apparatus as described in claim 13, wherein, The ophthalmological clinical data includes at least one of the following: axial length information, corneal topography, peripheral refractive distribution, pupillary dynamics information, accommodation response, near vision duration, wearing time, age, growth rate, and risk stratification indicators; And at least one of the following: near point convergence distance information, convergence and divergence range information, convergence-accommodation ratio, convergence insufficiency symptom scale, microocular stability, and binocular visual axis alignment offset.

15. The optical structure parameter generation apparatus as described in claim 13, wherein, The optical structure parameters correspond to at least one of the following: spherical aberration intensity, spherical aberration radius, microstructure aperture size, microstructure spacing, microstructure depth, scattering structure density, and spatial frequency contrast suppression segment; and at least one of the following: aperiodic arrangement of microlenses, phase distribution, parallax set correspondence table, and dynamic depth processing.

16. The optical structure parameter generation apparatus as described in claim 1, wherein, The processor is also used to perform data preprocessing on the ophthalmic clinical data, and then use the processed data to predict the future axial length growth of the human.

17. The optical structure parameter generation apparatus as described in claim 16, wherein, The data preprocessing includes at least one of the following: data normalization, missing value completion, time series alignment, age weighting, growth rate correction, noise suppression, outlier detection, population difference correction, and device difference correction.

18. The optical structure parameter generation apparatus as claimed in claim 1, wherein, The processor calculates the optical field parameters based on the optimization objective under constraints, including at least one visual quality constraint and at least one manufacturing feasibility constraint.

19. The optical structure parameter generation apparatus as described in claim 18, wherein, The at least one visual quality limitation includes at least one of the following: central visual acuity limitation, contrast sensitivity limitation, halo limitation, and night vision index limitation.

20. The optical structure parameter generation apparatus as described in claim 18, wherein, The at least one manufacturing feasibility constraint includes at least one of the following: minimum thickness constraint, oxygen permeability coefficient constraint, tolerance constraint, surface roughness constraint, and yield constraint.

21. The optical structure parameter generation apparatus as described in claim 1, wherein, The processor is also used to perform a manufacturing constraint projection on the optical structure parameters to adjust the optical structure parameters to a manufacturable range.

22. The optical structure parameter generating apparatus as described in claim 21, wherein, The manufacturing constraint projection system adjusts the optical structure parameters to a manufacturable range while satisfying at least one of the following constraints: minimum thickness limit, oxygen permeability limit, material safety limit, tolerance limit, surface roughness limit, yield limit, or mold processing limit.

23. The optical structure parameter generating apparatus as claimed in claim 1, wherein, The processor has machine learning capabilities and the ability to learn models on their own, manage versions, and roll back. The machine learning architecture is one of the following: deep neural networks, convolutional neural networks, recursive neural networks, long short-term memory networks, or equivalent architectures.

24. The optical structure parameter generation apparatus as described in claim 23, wherein, When the ophthalmological clinical data indicates that the visual quality index is below a predetermined threshold, the processor triggers a rollback to the previous model version or the previous optical field parameters based on subjective discomfort triggering conditions, manufacturing constraint projection triggering conditions, and model inference offset triggering conditions.

25. The optical structure parameter generation apparatus as described in claim 1, wherein, The optical structure parameters include phase design parameters, and the phase design parameters include at least one of microstructure, scattering distribution, phase structure, and asymmetric weighting.

26. The optical structure parameter generation apparatus as described in claim 25, wherein, The microstructure or the scattering distribution is one of aperiodic distribution, blue noise distribution, or quasi-random distribution.

27. The optical structure parameter generation apparatus as described in claim 25, wherein, The optical lens manufacturing apparatus designs a three-dimensional continuous master mold according to the phase design parameters, and manufactures myopia control lenses through at least one of nanoimprinting, turning, molding, photolithography, grayscale exposure, and laser direct writing, wherein the nanoimprinting is ultraviolet nanoimprinting or hot pressing nanoimprinting.

28. The optical structure parameter generating apparatus as claimed in claim 1, wherein, The processor is also used to output the optical structure parameters as a manufacturing interface file, and the manufacturing interface file includes at least one of the following: computer numerical control file, freeform surface processing file, stereolithography file, product data exchange standard file, integrated circuit layout file, grayscale mask file, and phase map.

29. The optical structure parameter generating apparatus as claimed in claim 1, wherein, The processor includes: a clinical data acquisition module connected to the storage device for acquiring ophthalmic clinical data stored in the storage device; a data preprocessing module connected to the clinical data acquisition module for performing data preprocessing on the ophthalmic clinical data; an optical field parameter generation module connected to the data preprocessing module for: predicting the future axial length growth of the human using the processed data; setting the future axial length growth as the optimization target; and calculating the optical field parameters based on the optimization target; an optical structure parameter generation module connected to the optical field parameter generation module for generating the optical structure parameters based on the optical field parameters; and a data updating module connected to the storage device for dynamically updating the ophthalmic clinical data stored in the storage device.

30. The optical structure parameter generation apparatus as described in claim 29, wherein, The optical field parameter generation module includes: a feature vector generation unit for converting the processed data into feature vectors; a prediction unit connected to the feature vector generation unit for predicting the future axial length growth of the human based on the feature vectors; an optical field parameter generation unit connected to the prediction unit for generating the optical field parameters based on the optimization target; and a target and constraint unit connected to the optical field parameter generation unit for setting the future axial length growth as the optimization target and setting a constraint condition, wherein the constraint condition includes at least one visual quality constraint and at least one manufacturing feasibility constraint.

31. The optical structure parameter generation apparatus as described in claim 1, wherein, The processor is also used to predict the risk of myopia progression in the human based on the ophthalmological clinical data, and to adjust the optical field parameters accordingly based on the risk of myopia progression during the calculation of the optical field parameters.

32. A myopia control lens manufacturing system, comprising: an optical structure parameter generation device as claimed in claim 1; an optical measurement device connected to the optical structure parameter generation device and configured to perform optical measurements on a human being and provide the human being's ophthalmological clinical data to the optical structure parameter generation device; and an optical lens manufacturing device connected to the optical structure parameter generation device and configured to receive the optical structure parameters from the optical structure parameter generation device and manufacture a myopia control lens based on the optical structure parameters.

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