Multi-Segmented Meniscus Wall Lens for Ophthalmic Applications
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Solution Overview
Problem
Conventional liquid meniscus lenses with cylindrical shapes, also known as 'hockey puck' designs, are not conducive for use in ophthalmic applications due to physical constraints such as size, shape, and control issues, limiting their functionality in devices like contact lenses.
Innovation Solution
A liquid meniscus lens with an arcuate front and back curve, featuring a meniscus wall formed into multiple linear segments with conical frustum shapes, allowing for electrostatic charge-induced changes in the meniscus shape between a saline solution and oil, enhancing optical power and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cylindrical shape with parallel sidewalls is used, then manufacturing is simplified, but optical adaptability for ophthalmic applications is limited
Solution Approach 1:
The meniscus wall is divided into multiple linear segments (first, second, third segments) with different orientations and angles relative to the optical axis. Each segment can be independently configured to control meniscus position, enabling versatile optical functionality while maintaining a manufacturable structured approach
Solution Approach 2:
The lens transitions from a cylindrical shape to an arcuate shape with curved surfaces. The front and back surfaces are defined by arcuate curves rather than flat or cylindrical surfaces, providing better optical performance and adaptability for ophthalmic applications
2Stability of the object's composition
If a fixed meniscus wall configuration is used, then structural stability is maintained, but optical power adjustment capability is reduced
Solution Approach 1:
The meniscus wall is designed with multiple linear segments that can dynamically adjust the meniscus position in response to applied voltage. The segmented structure allows controlled movement between different segments, enabling optical power adjustment while maintaining structural integrity through the defined geometric relationships between segments
3Adaptability or versatility
If an arcuate shape with multiple linear segments is used, then optical power and adaptability are improved, but manufacturing complexity increases
Solution Approach 1:
The meniscus wall is divided into multiple linear segments (first, second, third segments) with different orientations and angles relative to the optical axis. Each segment can be independently configured to control meniscus position, enabling versatile optical functionality while maintaining a manufacturable structured approach
Solution Approach 2:
Different segments of the meniscus wall have different local properties (angles, orientations, positions) optimized for specific functions. The first segment may be optimized for one optical power range while the second and third segments handle other ranges, allowing each local region to contribute to overall optical adaptability
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 a more stable and adaptable optical solution for ophthalmic applications, with adjustable optical power and improved lens thickness, enabling better refractive capabilities and cosmetic or therapeutic functions.
Implementation Method 1
Application of an electrostatic charge to a meniscus wall generally located in a perimeter area of one or both of the first arcuate optic and the second arcuate optic changes the physical shape of a meniscus formed between the saline solution and oil maintained within the cavity
Data Source
AI summary
The present invention relates generally to an arcuate liquid meniscus lens with a meniscus wall. Some specific embodiments include a liquid meniscus lens with a meniscus wall essentially in the shape of multiple segments of a frustum of a cone. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.