Progressive Lens Design via Interactive Parameter Adjustment
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Solution Overview
Problem
The complexity of selecting and dispensing progressive addition lenses is exacerbated by the large number of designs and series offered by different manufacturers, making it difficult for optometrists to find a suitable lens that meets a wearer's specific prescription requirements, especially since a single base curve can only ensure satisfactory optics over a narrow range of prescription powers.
Innovation Solution
A method and system that utilize a graphical user interface to adjust design parameters such as distance zone area, near zone area, corridor length, and blur gradients, allowing optometrists to interactively design and select progressive addition lenses by varying these parameters, with automatic adjustments to ensure the design remains within acceptable limits and meets the wearer's needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lens series and base curves are provided to cover a wide range of prescriptions, then the adaptability to different prescription powers is improved, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by allowing dynamic adjustment of key lens design parameters including base curve, addition power, corridor length, and zone positions through a graphical user interface. This enables a single lens design framework to adapt to various prescription requirements by modifying parameters rather than selecting from multiple fixed designs, thereby resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The invention implements dynamics by transforming the static selection process into a dynamic interactive design process. The graphical user interface enables real-time modification of lens parameters and immediate visualization of design changes, allowing the system to adapt to different prescription needs dynamically. This dynamic approach replaces the need for multiple fixed lens series with a single flexible design system.
2Ease of operation
If a graphical user interface is provided to adjust design parameters, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the dispenser to independently design and customize lens parameters through the graphical user interface without requiring assistance from manufacturers or complex manual calculations. The system provides automatic calculations and real-time feedback, allowing the user to self-configure the lens design by simply adjusting parameters and observing the visual feedback, thereby improving ease of operation despite the underlying system complexity.
Solution Approach 2:
The invention implements feedback through the graphical user interface that provides real-time visual representation of lens design changes. When the dispenser adjusts any parameter, the system immediately updates the graphical display to show the effect of the change, enabling the user to understand the impact of each adjustment. This feedback mechanism simplifies the operation by making the complex relationships between parameters transparent and intuitive.
3Adaptability or versatility
If freeform progressive addition lens designs are generated uniquely in response to customer needs, then the adaptability is improved, but the ease of operation deteriorates as the selection is out of the control of the optometrist
Solution Approach 1:
The patent applies preliminary action by providing the dispenser with the ability to pre-configure and control the unique lens design generation process through the graphical user interface. Rather than having the system generate designs automatically without input, the dispenser can set target parameters, adjust design constraints, and guide the generation process beforehand, maintaining control over the customization while still achieving adaptability to customer needs.
Data Source
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AI summary
A method of designing and/or selecting a progressive addition lens design for a wearer is disclosed. In an embodiment, the method includes displaying a graphical representation of an initial progressive addition lens design including design parameters having design values. A user interface is provided including, for each of one or more of the design parameters, a control that is adjustable over a range of levels, each level in the range being associated with a corresponding value of the respective design parameter. A control is adjusted to select a level and the selection is processed so as to substantially simultaneously update the displayed graphical representation in accordance with the selected level to provide a modified progressive lens design. A system for designing and/or selecting a progressive addition lens design for a wearer is also disclosed.