Smart Lens Composition for Hydration Expansion Control
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Solution Overview
Problem
Smart lenses face challenges in maintaining stability and mechanical properties due to limited component sizes, energy storage, and expansion issues, which affect communication and module functionality.
Innovation Solution
A smart lens composition incorporating a monomer blend of monofunctional and bifunctional silicone monomers, with a higher content of monofunctional silicone monomers, to control expansion and enhance structural stability, including a non-expandable module with elements like sensors and antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic devices are embedded in the lens for communication and control, then communication capability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The electronic device is nested within a cavity formed in the lens body, allowing the lens and electronic device to be integrated as a single unit. This nesting approach enables communication capability while managing device complexity through unified structure.
Solution Approach 2:
The lens and electronic device are combined into an integrated smart lens system, merging optical functionality with electronic communication functions. This integration improves versatility while managing complexity through combined design.
2Ease of operation
If the lens material expands upon contact with water, then comfort is improved, but distortion occurs and optical performance deteriorates
Solution Approach 1:
The lens uses a composite material comprising a polymer matrix and silane cross-linking agents. This composite structure provides both hydrophilicity for comfort and dimensional stability to prevent distortion upon water contact.
Solution Approach 2:
The lens material parameters are controlled by adjusting the ratio of monofunctional to bifunctional silane cross-linking agents. This parameter optimization balances water absorption for comfort with structural stability to prevent distortion.
3Ease of operation
If the lens material is too soft to be comfortable, then comfort is improved, but mechanical strength decreases and the lens cannot maintain its shape
Solution Approach 1:
The lens employs a composite material system with polymer base and silane cross-linking network. This composite structure provides both softness for comfort and mechanical strength through cross-linking, resolving the contradiction between comfort and structural integrity.
Solution Approach 2:
The silane cross-linking agents are incorporated beforehand into the polymer matrix to provide structural support. This pre-established cross-linking network cushions against shape loss while maintaining the soft comfort of the lens material.
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 composition ensures stable function and adhesion to the eye, preventing distortion and maintaining optical performance by controlling expansion and ensuring mechanical integrity.
Implementation Method 1
a smart lens composition including: a non-expandable module; and a monomer blend. The monomer blend may include a monofunctional silicone monomer and a bifunctional silicone monomer
Data Source
AI summary
A smart lens compositions according to an embodiment includes a non-expandable module and a monomer blend containing a monofunctional silicone monomer and a bifunctional silicone monomer. A smart lens may be manufactured using the above-described smart lens composition. The expansion and distortion of the lens may be suppressed when hydrating the smart lens, and structural stability and uniformity of the smart lens may be improved.