Ophthalmic Lens Optimization via 3D Facial Morphology Simulation
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Solution Overview
Problem
Existing methods for optimizing ophthalmic lens settings in spectacle frames often result in aesthetically unsatisfactory outcomes due to a lack of consideration for the wearer's facial morphology and frame flexibility, leading to potential contact issues with cheeks or eyebrows.
Innovation Solution
A method utilizing computer means to generate and modify 3D representations of the wearer's face, spectacle frame, and ophthalmic lens settings, allowing for optimization based on the relative position and morphology, including flexibility tolerance and optical indices, to ensure a better fit and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional mechanical measurement methods are used to determine lens settings, then manufacturing precision is achieved, but aesthetic appearance deteriorates due to lack of consideration for facial morphology
Solution Approach 1:
The patent creates a digital 3D copy of the wearer's face including facial features like cheeks and eyebrows. This digital model is then used to simulate and optimize lens positioning before actual manufacturing, allowing aesthetic evaluation and adjustment without affecting manufacturing precision. The digital copy enables virtual try-on and aesthetic assessment while the physical lens is manufactured with precise mechanical measurements.
2Manufacturing precision
If lens settings are optimized solely based on frame measurements, then manufacturing precision is maintained, but adaptability to individual wearer morphology deteriorates
Solution Approach 1:
The patent performs preliminary digital simulation and optimization of lens settings based on the wearer's 3D facial morphology before actual lens manufacturing. The system calculates optimal lens positioning by considering facial features in advance, then uses these pre-optimized settings to guide the physical lens cutting and fitting process, ensuring both precision and adaptability.
Solution Approach 2:
The patent adjusts lens positioning parameters such as vertical position, horizontal position, and tilt angle based on the digital facial model. By varying these parameters in the simulation to find optimal values that avoid contact with facial features while maintaining optical performance, the system achieves adaptability to individual morphology while preserving manufacturing precision through precise parameter transfer to production.
3Ease of manufacture
If standard lens fitting procedures are used, then ease of manufacture is maintained, but reliability of fit deteriorates due to potential contact with facial features
Solution Approach 1:
The system automatically performs the optimization of lens settings by algorithms that analyze the digital facial model and calculate optimal positioning parameters. This self-service approach eliminates the need for manual trial-and-error adjustments by technicians, maintaining ease of manufacture while significantly improving reliability of fit by preventing contact with facial features through computer-optimized positioning.
Data Source
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Figure 2
AI summary
A method implemented by computer means, for optimizing the settings of an ophthalmic system comprising an ophthalmic lens arranged to be fitted in a spectacle frame according to a given wearer, the method comprising the steps of : - providing to the computer means wearer, frame and lens data comprising a 3D representation of the, respectively wearer's face, frame and lens, - generating positioning data based on the wearer, frame and lens data, said positioning data comprising the respective position of the wearer face with respect to the spectacle frame associated with the ophthalmic lens, and - upon a modification request, modifying the settings of the ophthalmic system so as to modify the positioning data.