Compound-Curvature Goggle Lens for Distortion-Free Vision
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Solution Overview
Problem
Conventional goggles with magnetically attractive lenses suffer from image inconsistency and distortion when the wearer looks in various directions, leading to visual discomfort and increased risk of danger during athletic activities.
Innovation Solution
A goggle lens with a compound curvature design featuring multiple lens portions with distinct vertical radii of curvature, including a first convex surface, two second convex surfaces, and a third convex surface, integrated into a seamless laminated structure for improved optical performance and reduced distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the lens has a varying radius of curvature along the meridian line to provide a greater field of view, then the field of view is improved, but image inconsistency and distortion occur when the wearer looks in various directions
Solution Approach 1:
The lens is divided into multiple lens portions (first lens portion, second lens portion, third lens portion) with different curvature characteristics. Each portion is optimized for specific viewing directions, allowing the lens to maintain image consistency across various viewing angles while providing a wide field of view.
Solution Approach 2:
Different regions of the lens are assigned different vertical radii of curvature. The first lens portion has a first vertical radius of curvature, the second lens portion has a second vertical radius of curvature, and the third lens portion has a third vertical radius of curvature. This local differentiation allows each region to optimize optical performance for its specific viewing direction.
2Ease of manufacture
If the lens uses a single curvature design, then manufacturing is simpler, but visual discomfort and dizziness occur during athletic activities
Solution Approach 1:
The lens is segmented into multiple portions with different curvature characteristics, allowing complex optical performance to be achieved through modular design. This segmentation enables systematic optimization of each region while maintaining manufacturability through standardized lens forming processes.
Solution Approach 2:
The vertical radius of curvature is varied across different lens portions to optimize optical performance. By changing this key geometric parameter across different regions, the lens achieves improved visual comfort and reduced dizziness during athletic activities while remaining manufacturable.
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 goggle lens provides clearer and non-deformed vision, enhancing user safety and comfort by minimizing image distortion and dizziness during various head movements, particularly in athletic activities.
Implementation Method 1
The lens includes a first lens portion, at least one second lens portion and a third lens portion. The first lens portion includes a first convex surface that is distal to the wearer's face. The first convex surface has a first vertical radius of curvature along a first meridian direction.
Data Source
AI summary
A goggle lens is coupled with a goggle frame for enclosing a wearer's head, and includes a first lens portion, at least one second lens portion integrally connected with a lower edge of the first lens portion, and a third lens portion integrally formed with and extends upwardly from an upper edge of the first lens portion. A first convex surface of the first lens portion has a first vertical radius of curvature which is different from a second vertical radius of curvature of a second convex surface of the second lens portion, and is different from a third vertical radius of curvature of a third convex surface of the third lens portion so as to provide a wearer with good visual effects.