Adaptive Progressive Lens Optical Function Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining the dioptric parameters of ophthalmic lenses are standardized and do not account for individual variations in optical requirements based on specific wearing conditions, leading to suboptimal vision correction.
Innovation Solution
A method for determining the optical function of a progressive ophthalmic lens that adapts to specific wearing conditions by using predefined optical functions based on wearer prescriptions and wearing data, switching between two predefined optical functions depending on the wearing data parameter's value relative to a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standardized methods for determining dioptric parameters are used, then manufacturing and prescription processes are simplified, but the optical function does not adapt to individual wearing conditions
Solution Approach 1:
The patent applies dynamics by making the optical function adaptive rather than static. The system dynamically selects between a first optical function and a second optical function based on the wearing data parameter value relative to a threshold, allowing the lens to adapt to different wearing conditions (such as different distances between the eye rotation center and the lens) while maintaining a manageable manufacturing process through predefined function sets.
2Manufacturing precision
If standardized dioptric parameters are used, then manufacturing precision is maintained, but vision correction is suboptimal for individual wearing conditions
Solution Approach 1:
The patent applies parameter changes by modifying the optical function parameters based on wearing data. The system changes between predefined optical functions (first and second optical functions) depending on whether the wearing data parameter exceeds a threshold, thereby adjusting the dioptric parameters to match individual wearing conditions while maintaining manufacturing precision through the use of predefined function sets.
3Reliability
If personalized optical functions are implemented, then vision correction is optimized for specific wearing conditions, but the system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the optical function determination into distinct segments: a first predefined optical function for when the wearing data parameter is below the threshold, and a second predefined optical function for when it exceeds the threshold. This segmentation allows personalized optimization for different wearing conditions while managing system complexity through clear, discrete function definitions and a simple threshold-based selection mechanism.
Data Source
AI summary
Disclosed is a method for determining an optical function of a progressive ophthalmic lens for a wearer, including: providing a prescription of the wearer; providing wearing data including at least a numerical parameter; providing by at least one processor a set of predefined optical functions including at least a first predefined optical function adapted to the prescription of the wearer and to a first predefined wearing parameter and a second predefined optical function for the prescription of the wearer and to at least a second predefined wearing data parameter, the second predefined optical function being different from the first; and determining an optical function of the progressive ophthalmic lens, so: when the wearing data parameter≥a threshold value, the optical function of the lens=first predefined optical function, and when the wearing data parameter<the threshold value, the optical function=the second predefined optical function.