Progressive Ophthalmic Lens Array Customization
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Solution Overview
Problem
Conventional progressive ophthalmic lenses lack customization to individual lifestyle and biometric parameters, leading to suboptimal selection and fitting for lens wearers, as they often rely on a single progressive surface design for each addition power, failing to account for the unique needs of each wearer.
Innovation Solution
An array of progressive ophthalmic lens elements with varying progressive lens designs tailored to specific lifestyle and biometric parameters, such as near vision demand, eye movement patterns, and frame characteristics, allowing for a more personalized selection based on wearer-specific data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single progressive surface design is used for each addition power, then manufacturing complexity is reduced, but lens performance is not optimized for individual wearer needs
Solution Approach 1:
The patent segments the progressive lens design by creating multiple progressive surface designs (e.g., first, second, third progressive surface designs) for each addition power. Each surface design is optimized for different wearer characteristics such as eye movement patterns and lifestyle needs, allowing customization without complicating the manufacturing process since each segment remains a complete, manufacturable lens surface.
Solution Approach 2:
The patent varies key design parameters of the progressive surfaces including corridor length, distance zone size, near zone size, and progressive addition distribution. By offering multiple designs with different parameter combinations for each addition power, the system enables optimization for individual wearer parameters while maintaining standardized manufacturing processes for each specific design variant.
2Reliability
If multiple progressive surface designs are provided for each addition power, then lens performance is optimized for individual wearer needs, but device complexity increases
Solution Approach 1:
The patent creates a universal selection system where a limited number of progressive surface designs (typically 3-5 designs per addition power) can serve multiple wearer types. Each design is multi-functional, capable of addressing different lifestyle categories and biometric parameters, thereby reducing the total number of designs needed while maintaining comprehensive coverage for individual optimization.
Solution Approach 2:
The patent systematically varies specific design parameters (corridor length, zone sizes, addition distribution) within controlled ranges to create distinct designs. This parameter-based approach allows for manageable complexity by making targeted modifications to base designs rather than creating entirely new designs for each wearer type.
3Reliability
If lens selection is based on wearer lifestyle and biometric parameters, then lens effectiveness is improved, but selection process complexity increases
Solution Approach 1:
The patent applies local quality by matching specific progressive surface designs to specific wearer characteristics. Instead of requiring comprehensive analysis of all wearer parameters, the system identifies key local factors (such as primary visual tasks, eye movement patterns, or frame type) and selects designs optimized for those specific local conditions, simplifying the selection process while maintaining effectiveness.
Solution Approach 2:
The patent establishes direct correlations between wearer parameters and lens design parameters. By creating a mapping system where specific wearer characteristics (lifestyle categories, biometric measurements) directly correspond to specific design parameter combinations, the selection process becomes more straightforward and less complex.
Data Source
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AI summary
An array of progressive ophthalmic lens elements is disclosed. The progressive ophthalmic elements contained in the array having substantially the same addition power and substantially the same optical prescription for distance vision. Each of the progressive ophthalmic lens elements has a progressive lens design characterised by a set of parameters defining a distance zone providing a refracting power for distance vision, a near zone providing a refracting power for near vision and a corridor having a refracting power varying from that of the distance zone to that of the near zone. The progressive ophthalmic lens elements provide, for a range of values or categories of at least two lifestyle and/or biometric parameters of lens wearers, different progressive lens designs in which at least two of the lens design parameters each have a respective value or characteristic attributable to, or associated with, a particular value or category of a respective one of the lifestyle and/or biometric parameters.