Stereoscopic Lens Design Simulation
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Solution Overview
Problem
Current methods for customizing eyeglass lenses, particularly progressive addition lenses (PAL), often fail to accurately match patient expectations, leading to low satisfaction levels due to the complexity of mathematical calculations and the time-consuming nature of trial processes, which do not adequately account for real-world vision perception during movement.
Innovation Solution
A method involving the use of stereoscopic scenes with dynamic optical effects, allowing patients to interactively test and choose lens designs by expressing opinions on blur and distortion effects while moving, using virtual reality and electro-active components to simulate different lens designs without manufacturing actual lenses, thereby optimizing vision comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional trial lens methods are used to customize vision correction, then lens manufacturing precision can be achieved, but the process is time-consuming and does not adequately account for real-world vision perception during movement
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing optical distortion characteristics for multiple lens designs before the actual customization process. During the trial, pre-computed distortion maps are rapidly applied to simulate different lens designs, eliminating the need for time-consuming real-time calculations or physical trial lenses for each design variant.
Solution Approach 2:
The patent creates virtual copies of lens optical effects through computer-generated distortion maps that replicate the visual perception of wearing actual lenses. These digital copies allow patients to experience and compare different lens designs on their own facial features without requiring physical trial lenses for each design, significantly reducing the trial process time.
2Reliability
If multiple lens design parameters are tested to improve patient satisfaction, then vision comfort can be optimized, but the cost and complexity of clinical trials increase
Solution Approach 1:
The patent implements a universal trial system that can evaluate multiple lens design parameters (distortion, progression, optical centers) using a single integrated software platform. The system processes patient facial geometry and applies various lens designs through software algorithms, eliminating the need for multiple specialized trial lens sets and simplifying the trial process while maintaining comprehensive parameter testing.
Solution Approach 2:
The patent introduces a computer-based software system as an intermediary between the patient and the lens selection process. This intermediary automatically processes facial measurements, applies virtual lens distortions, and presents comparative views, replacing the need for complex manual trial lens fitting procedures and reducing overall system complexity.
3Measurement precision
If physical trial lenses are manufactured for each patient trial, then accurate vision testing can be performed, but manufacturing costs and time increase significantly
Solution Approach 1:
The patent replaces physical trial lens manufacturing with digital copying of lens optical characteristics. Pre-computed distortion maps serve as digital templates that can be rapidly applied to patient-specific facial geometries through software, eliminating the need to physically manufacture custom trial lenses for each patient while maintaining testing accuracy.
Solution Approach 2:
The patent substitutes the mechanical system of physical trial lens manufacturing and fitting with a computational system. Software algorithms process patient measurements and generate virtual lens simulations, replacing the need for mechanical lens production, edging, and physical fitting procedures.
Data Source
AI summary
A method for determining an optimal eyeglass lenses design for a viewer (1) comprising the successive steps of: showing the viewer (1) a stereoscopic scene including optical effects of a first lens design;—introducing a relative movement between the viewer (1) and the shown stereoscopic scene, said scene being shown with optical effects of the first lens design; expressing the viewer's opinion; showing the viewer (1) a stereoscopic scene including optical effects of a modified lens design; introducing a relative movement between the viewer (1) and the shown stereoscopic scene, said scene being shown with the modified lens optical effects; expressing again the viewer's opinion; repeating the three last steps up to viewer's satisfaction. A system for customizing vision correction suitable to implement said method. Related computer program for dynamically calculating a stereoscopic image. Related computer program for actuating an electro-active component.