Tunable Liquid Lens Siloxane Polymer Membrane Compatibility
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Solution Overview
Problem
Elastomeric membrane materials used in tuneable liquid lenses face solubility and swellability issues due to the liquids filled in their volumes, limiting the spectrum of suitable liquids and affecting durability and chemical/physical properties.
Innovation Solution
A liquid comprising a siloxane-based polymer with specific alkyl and phenyl moieties, optionally substituted, and additives such as protecting agents, stabilizers, and surface tension adjustment agents, is used to enhance the compatibility and durability of the membrane materials, allowing for improved optical properties and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liquids are used in tuneable lenses with elastomeric membrane materials, then the lens can operate, but the membrane materials suffer from solubility and swellability effects that limit durability and restrict liquid selection
Solution Approach 1:
The patent introduces siloxane-based polymers as intermediary substances that are chemically compatible with both the elastomeric membrane materials and the liquid medium. These polymers form a protective interface layer that prevents direct harmful interactions between the liquid and membrane, thereby maintaining durability while enabling broader liquid selection.
Solution Approach 2:
The invention uses composite material systems combining elastomeric membranes with siloxane-based polymer coatings or modifications. This composite structure provides both the mechanical flexibility needed for tuneable lens operation and chemical resistance against solubility and swellability effects, allowing wider liquid compatibility.
2Illumination intensity
If the liquid composition is expanded to improve optical properties, then optical performance increases, but solubility and swellability effects on the membrane worsen
Solution Approach 1:
Siloxane-based polymers serve as intermediary layers between the liquid and membrane, allowing the liquid composition to be optimized for optical properties without directly contacting and degrading the membrane. This mediator layer maintains membrane chemical stability while permitting enhanced optical performance.
Solution Approach 2:
The patent modifies the chemical parameters of the liquid system by incorporating siloxane-based polymers with specific molecular weights and compositions. These parameter changes enable optimization of optical properties such as refractive index and transparency while simultaneously reducing solubility and swellability effects on the membrane.
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 solution expands the range of suitable liquids for tuneable lenses, enhancing the chemical and physical properties of the membrane materials, improving durability and optical performance while minimizing solubility and swellability effects.
Implementation Method 1
most elastomeric membrane materials suitable for the use in tuneable liquid lenses suffer from effects based on solubility and swellability caused by the liquid filled in the volume
Implementation Method 2
most elastomeric membrane materials suitable for the use in tuneable liquid lenses suffer from effects based on solubility and swellability caused by the liquid filled in the volume
Implementation Method 3
at least one additive, particularly wherein the at least one additive is selected from the group of a protecting agent, a stabiliser, a tracer, a buffer and a surface tension adjustment agent
Data Source
AI summary
The present invention relates to a liquid for an optical tuneable device, wherein the optical tuneable device comprises a volume and a membrane and wherein the volume is filled with a liquid comprisingat least one compound of formula (I),at least one additive, particularly wherein the at least one additive is selected from the group of a protecting agent, a stabiliser, a tracer, a buffer and/or a surface tension adjustment agent.