Honeycomb Antifogging Optical Surface Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for preventing fogging on optical elements, such as safety gear masks and glasses, are either technically complex, prone to malfunction, or have limited effectiveness due to the finite capacity of water-storing layers, leading to impaired visibility under harsh conditions and during multiple cleaning and disinfection cycles.
Innovation Solution
A non-fogging surface with a honeycomb structure is created, featuring capillary tubes that end in water-absorbing areas, enhancing hydrophilic properties to ensure a uniform, thin fluid film forms, preventing condensation from splitting into individual drops and maintaining transparency under extreme conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hydrophilic surface coating is applied to prevent fogging, then the surface can form a water film, but the coating capacity is limited and it wears out during mechanical stress and cleaning
Solution Approach 1:
The patent employs a porous polymer foam layer with controlled pore structure to absorb and store condensation water. The porous structure provides large surface area and volume for water storage without requiring thin fragile coatings, enabling the antifogging function to withstand mechanical stress and repeated cleaning cycles.
Solution Approach 2:
The invention uses a composite structure combining a hydrophilic polymer foam material with specific pore characteristics. This composite approach integrates the water-absorbing capability of hydrophilic polymers with the mechanical robustness of foam structure, creating a durable antifogging layer that maintains functionality under harsh conditions.
2Reliability
If multiple layers with porous structure are manufactured to store water, then antifogging effect is achieved, but the manufacturing process becomes complicated
Solution Approach 1:
The patent segments the antifogging function into distinct operational zones within a single layer: the porous polymer foam structure provides water storage capacity while the hydrophilic surface properties enable water film formation. This segmentation of functions within one integrated layer simplifies manufacturing compared to assembling multiple separate layers.
Solution Approach 2:
The invention achieves the desired antifogging performance by optimizing parameters of a single porous layer, such as pore size distribution, porosity, and thickness, rather than requiring multiple layers with specific pore configurations. This parameter optimization approach simplifies the manufacturing process while maintaining effectiveness.
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 honeycomb structure ensures long-term fog prevention and improved visibility by forming a stable, contiguous fluid film that resists mechanical stress and maintains clarity during repeated cleaning and disinfection, while being cost-effective and simple to manufacture.
Implementation Method 1
the surface has a honeycomb structure with a plurality of honeycombs... At least one capillary tube may be formed in the honeycomb structure
Implementation Method 2
An excellent hydrophilic surface property is achieved by means of the structuring of the surface... a uniform, thin fluid film is formed on the surface
Implementation Method 3
The honeycombs are configured according to the invention such that adhesive forces between the honeycomb walls (webs) and the drops are greater than cohesive forces within the drops
Data Source
AI summary
A component, especially an optical element, has a non-fogging surface. The surface has a honeycomb structure (1) with a plurality of honeycombs (2).