Method for designing spectacle lens, method for manufacturing spectacle lens, system for designing spectacle lens, and program for system for designing spectacle lens

By smoothing the glasses lenses with approximate curvature concepts and Gaussian filters, the complex and time-consuming calculation problems in the prior art are solved, and a more efficient lens design is achieved to maintain the progressive characteristics and optical performance of the lenses.

CN120344901APending Publication Date: 2025-07-18HOYA LENS THAILAND LTD
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Patent Information

Application Number
CN202380085182.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-03-13
Filing Date
2023-11-16
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

The prior art calculates complex and time-consuming when performing smoothing filtering of glasses lenses, especially when processing refractive power or curvature, which requires processing surfaces rather than points, resulting in an increase in calculation workload.

Method used

Using the concept of approximate curvature, the approximate curvature distribution graph is smoothed through a smoothing filter, a new lens surface is designed, and a Gaussian filter and an averaging filter are used as long strips in the x-axis direction, reducing calculation complexity.

Benefits of technology

The time of smoothing filtering processing of glasses lenses is significantly reduced, computing efficiency is improved, and the progressive characteristics and optical properties of the lenses are maintained.

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Abstract

A method for designing a spectacle lens, said method comprising: an approximate curvature map acquisition step for acquiring a distribution map on xy plane coordinates of an approximate curvature (Cp) for each point on a surface (alpha), which is a design surface; a smoothing processing step of performing smoothing filtering processing on the distribution map; and a design step for designing a new surface (alpha ') on the basis of the distribution diagram of the new approximation curvature (Cp') obtained by the smoothing step.
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Citation Information

Patent Citations

  • Multifocal optical device design

    US20050254007A1

  • Gradient index multifocal lens, spectacle lens, and manufacture of gradient index multifocal lens

    WO1997019382A1

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    CN121050121A