Multi-ring Wavy Lens for Myopia Control
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Solution Overview
Problem
Conventional multi-focal lenses, such as Fresnel lenses and miniature island array structures, fail to effectively inhibit the progression of refractive errors like myopia and hyperopia due to issues like double vision and structural damage, which affect long-term use and vision clarity.
Innovation Solution
A multi-ring multi-focal-length single-ring inner wavy lens with concentric circular rings of varying diopter, featuring a wavy structure with peaks and valleys, optimized parameters, and smooth or wavy joint connections, distributed within a specific radius and annulus width range, enhancing focal regions and reducing aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Fresnel lenses are used to provide multi-focal-length areas, then the lens can inhibit progression of refractive errors, but double vision occurs when the line of sight passes through positions away from the center
Solution Approach 1:
The lens is divided into multiple focal length areas with different diopter values arranged in specific patterns. Each segment provides a different focal length, and the segmentation allows the lens to provide multiple focus regions without causing double vision by carefully controlling the spatial arrangement and transition zones between segments.
2Reliability
If miniature island array structures are used to provide multi-focal-length areas, then the lens can inhibit progression of refractive errors, but the overall processing uniformity is difficult to guarantee and the structure is easy to be damaged
Solution Approach 1:
The patent employs continuous gradient index structures and optimized geometric parameters for the lens elements. By carefully controlling the radial and tangential curvature variations and the distribution of different focal length areas, the lens achieves both the desired multi-focal functionality and manufacturing uniformity, reducing sensitivity to processing variations.
3Reliability
If miniature island array structures are used to provide multi-focal-length areas, then the lens can inhibit progression of refractive errors, but the structure is easy to be damaged affecting long-term use effect
Solution Approach 1:
The lens utilizes composite optical structures combining different material properties and structural configurations. The design integrates multiple focal length areas with varying refractive indices and geometric configurations in a unified lens body, creating a more robust structure that resists damage while maintaining the multi-focal functionality for long-term use.
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 lens provides multiple focus regions, inhibiting refractive error progression, improving vision clarity and comfort by optimizing parameters for better aberration correction and maintaining clear vision during eye movement.
Implementation Method 1
The circular rings each are of a wavy structure. The wavy structure comprises peaks and valleys, where the diopter of a position where each peak is located is greater than that of the main lens area, the diopter of a position where each valley is located is smaller than that of the main lens area.
Data Source
AI summary
Disclosed is a multi-ring multi-focal-length single-ring inner wavy lens. The lens comprises a main lens area and a concentric circular ring area. The concentric circular ring area comprises a plurality of circular rings, the plurality of circular rings are concentrically distributed with the center of the lens as the center, the width of an annulus between every two adjacent circular rings gradually increases from inside to outside, and the circular rings each are of a wavy structure. Each wavy structure comprises peaks and valleys, the diopter of a position where each peak is located is greater than that of the main lens area, and the diopter of a position where each valley is located is smaller than that of the main lens area. The lens disclosed by the present disclosure can provide a plurality of focus regions to enhance the fitness of human eyes.