Spectacle Lens Random Surface Modulation for Habituation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for creating modified geometries in spectacle lenses do not effectively prevent habituation of the eye to the new geometry, as they lack randomness and regularity in surface modulation.
Innovation Solution
A method involving a continuous random surface modulation function or a scaled continuous random surface modulation function is applied to a predefined surface of a spectacle lens, generating a randomly modulated surface to prevent habituation while maintaining optical functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a modified geometry is created on the spectacle lens surface, then optical performance is improved, but the eye habituates to the new geometry
Solution Approach 1:
The patent applies asymmetry by introducing a random modulation function that creates asymmetric surface variations. The modulation function includes random terms (e.g., random numbers, stochastic processes) that break the symmetry of the lens surface, preventing the eye from adapting to a regular pattern. This asymmetric random modulation maintains optical performance while avoiding habituation.
Solution Approach 2:
The patent applies preliminary action by pre-calculating and pre-planning the random modulation function before lens manufacturing. The modulation function is defined in advance with specific parameters (amplitude, frequency distribution, random seed) that are optimized to prevent habituation while maintaining optical quality. This preliminary design ensures that the final lens surface has the desired properties without requiring post-manufacturing adjustments.
2Object-affected harmful factors
If a random surface modulation is applied to prevent habituation, then habituation is prevented, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by defining the random modulation function through controllable parameters such as amplitude, spatial frequency, and random distribution characteristics. By adjusting these parameters, the system can optimize the balance between habituation prevention and manufacturing feasibility. The modulation function uses standard mathematical operations and random number generation, which can be implemented with existing computational tools.
3Reliability
If a continuous random surface modulation function is applied, then habituation is prevented and optical functionality is maintained, but calculation complexity increases
Solution Approach 1:
The patent applies mechanics substitution by replacing complex mechanical surface modulation processes with mathematical function application. Instead of physically modulating the lens surface through complex mechanical means, the system uses a continuous random surface modulation function that can be applied through computational algorithms. This substitution simplifies the calculation process while maintaining the desired optical properties and habituation prevention.
Data Source
Figure 1~2
Figure 3~4
Figure 5a~5b
AI summary
The present invention relates to a method being configured for calculating, by a computer, data of a spectacle lens for the purpose of a use of the data for a manufacture of the spectacle lens, the method comprising the step of generating data of a randomly modulated surface for said spectacle lens and the method being characterized in that said data of said randomly modulated surface resulting from an application of a continuous random surface modulation function or a scaled continuous random surface modulation function to a predefined surface for said spectacle lens.