Optical Equipment Determination via Weighted Cost Optimization
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Solution Overview
Problem
Conventional methods for fitting spectacle frames to wearers result in unstable and uncomfortable optical equipment due to asymmetries and imbalances in facial morphology, requiring manual deformation that can damage lenses and frames, disrupt aesthetics, and fail to account for individual comfort and activity needs.
Innovation Solution
A method using computer-aided optimization to determine both optical lenses and spectacle frames based on wearer data, including optical and comfort criteria, to create a globally optimized optical equipment that minimizes mechanical stress and ensures optimal fit, comfort, and aesthetics without deforming the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual deformation of spectacle frame is performed to adjust to wearer asymmetries, then fit and comfort are improved, but mechanical stress on optical lenses increases significantly
Solution Approach 1:
The patent applies preliminary action by determining the optimal spectacle frame configuration before the optical lenses are installed. The method calculates port settings and frame adjustments based on wearer data and morphological analysis, then provides these pre-determined settings to the optician before lens installation, thereby avoiding subsequent manual deformation that would stress the lenses.
Solution Approach 2:
The patent replaces the manual mechanical adjustment system with a computer-based calculation system. Instead of physically deforming the frame manually after lens installation, the system uses software to compute optimal port settings and frame configurations based on wearer morphology, substituting mechanical trial-and-error adjustment with computational determination.
2Ease of operation
If manual deformation of spectacle frame is performed to adjust to wearer asymmetries, then fit and comfort are improved, but the aesthetics of the frame are altered
Solution Approach 1:
The patent determines the optimal balance between fit and aesthetics before any physical adjustment is made. By calculating port settings and frame configurations in advance based on wearer morphology, the system preserves the original frame aesthetics while achieving proper fit, eliminating the need for post-installation deformation that would alter the frame's appearance.
3Adaptability or versatility
If manual adjustment of spectacle frame is performed after lens installation, then individual wearer needs are addressed, but the process is time-consuming
Solution Approach 1:
The patent replaces time-consuming manual adjustment processes with automated computer-based calculations. The system rapidly processes wearer data, morphological information, and optical requirements to determine optimal port settings and frame configurations, significantly reducing the time required compared to manual trial-and-error adjustment while still addressing individual wearer needs.
Solution Approach 2:
The system enables self-service by providing opticians with pre-calculated optimal settings that can be directly applied without extensive manual adjustment. The computer-determined port settings and frame configurations allow for quicker implementation while still achieving personalized fit, reducing the time investment required for customization.
4Ease of operation
If manual deformation of spectacle frame is performed to adjust to wearer asymmetries, then comfort is improved, but the optical equipment becomes unstable if adjustment is not carried out
Solution Approach 1:
The patent resolves the stability-comfort contradiction by determining the optimal frame configuration in advance, before lens installation. The computer-based system calculates port settings and adjustments that simultaneously ensure both comfort and stability, providing pre-determined settings that eliminate the need for post-installation deformation while achieving proper fit and balance.
Data Source
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AI summary
Method for determining an optical equipment Method implemented by computer means for determining an optical equipment comprising at least an optical lens and a spectacle frame, the optical lens being adapted to be mounted in the spectacle frame, the method comprising: • - a wearer data providing step (S1), during which wearer data relating at least to the wearer's optical requirements is provided, • - an optical cost function providing step (S2), during which an optical cost function is provided, the optical surface cost function being related to the optical function of the at least one optical lens and being defined based at least on part of the wearer data, • - a comfort cost function providing step (S3), during which a comfort cost function is provided, the comfort cost function being related at least to the weight of the optical equipment, • - an optical equipment determining step (S4), during which the optical equipment that minimizes the difference between a global cost function and a target value of the global cost function is determined, the global cost function being a weighted sum of the optical and the comfort cost functions.