Ring-Shaped Spectacle Lens Structure for Myopia Wearability
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Solution Overview
Problem
Existing spectacle lenses lack comfort and wearability, particularly for those designed to correct vision and prevent myopia progression in children, due to the presence of uniform transmittance and surface power across their surfaces.
Innovation Solution
A spectacle lens design featuring a connected zone surrounding the optical center with varying surface power and diffuse transmittance, incorporating a plurality of ring-shaped structures with distinct surface powers and transmittances, enhancing comfort and wearability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform transmittance and surface power are used across the lens surface, then manufacturing is simplified, but comfort and wearability deteriorate
Solution Approach 1:
The patent applies local quality by creating different zones with distinct optical properties: a central clear zone with uniform transmittance and surface power for sharp vision, and a peripheral zone with varying diffuse transmittance to prevent myopia progression. This allows each region of the lens to have optimized properties for its specific function, resolving the contradiction between manufacturing simplicity and wearability comfort.
Solution Approach 2:
The lens is segmented into functionally distinct zones: a central clear zone and a peripheral zone with ring-shaped structures. This segmentation allows the lens to provide both sharp central vision and beneficial peripheral optical effects, achieving comfort and wearability without overly complicating manufacturing through defined zone boundaries.
2Reliability
If ring-shaped structures with varying surface power are added to correct vision and prevent myopia, then visual correction and myopia prevention are improved, but device complexity increases
Solution Approach 1:
The patent implements local quality by confining complex ring-shaped structures with varying surface power and diffuse transmittance specifically to the peripheral zone, while keeping the central zone simple and clear. This localized approach provides effective vision correction and myopia prevention in the periphery without making the entire lens overly complex.
Solution Approach 2:
The lens design segments functionality by placing ring-shaped structures only in the peripheral zone, separating the correction function from the central clear zone. This segmentation achieves reliable vision correction and myopia prevention while maintaining manageable overall device complexity through clear functional分区.
3Ease of operation
If diffuse zones with different diffuse transmittance are incorporated in ring-shaped structures, then comfort and wearability are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by implementing diffuse zones with controlled transmittance variations specifically within the peripheral ring-shaped structures. This localized implementation improves comfort and wearability through optimized peripheral light distribution while concentrating manufacturing precision requirements to specific zones rather than the entire lens surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design provides increased comfort and wearability by ensuring a gradual transition in surface power and transmittance, addressing the discomfort associated with uniform lens surfaces.
Implementation Method 1
each ring-shaped structure of the plurality of ring-shaped structures has a surface power that is different from a surface power of a surface of the spectacle lens comprising a ring-shaped structure of the plurality of ring-shaped structures outside a respective domain of each ring-shaped structure
Implementation Method 2
at least one ring-shaped structure of the plurality of ring-shaped structures comprises a diffuse zone having a diffuse transmittance that is different from a diffuse transmittance of the ring-shaped structure
Data Source
AI summary
A spectacle lens includes a connected zone and a plurality of ring-shaped structures, the connected zone surrounding an optical center of the spectacle lens or a fitting point of the spectacle lens. Each ring-shaped structure of the plurality of ring-shaped structures has a surface power that is different from a surface power of a surface of the spectacle lens having a ring-shaped structure of the plurality of ring-shaped structures outside a respective domain of each ring-shaped structure of the plurality of ring-shaped structures. The ring-shaped structure of the plurality of ring-shaped structures includes a diffuse zone having a diffuse transmittance that is different from a diffuse transmittance of the ring-shaped structure of the plurality of ring-shaped structures.