Open Mesh Screen Coating for Angle-Independent Privacy
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Solution Overview
Problem
Commercially available privacy screens are limited in their functionality, as their privacy features are highly dependent on viewing and incidence angles of light, providing privacy only at certain angles and being sensitive to light absence.
Innovation Solution
A mesh screen with a substrate having an openness of greater than 30% and a first major surface with a reflectance value of over 10% as measured by the EN410 standard, featuring a diffuse reflection profile at all viewing angles except direct illumination, achieved through a specific fiber configuration and coating, ensuring consistent privacy across various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional screens are used to provide privacy, then privacy is achieved at certain viewing angles, but privacy functionality is lost at other angles and in absence of light
Solution Approach 1:
The patent applies a reflective coating with specific optical properties that creates a diffuse reflection profile, effectively changing how light interacts with the screen surface. This coating modifies the optical characteristics to provide consistent privacy across all viewing angles, transforming the screen from angle-dependent to angle-independent privacy functionality.
Solution Approach 2:
The patent changes the reflectance parameter to greater than 10% as measured by EN410 standard and engineering the diffuse reflection profile parameter to maintain consistent scattering across all viewing angles. By adjusting these optical parameters, the screen achieves reliable privacy functionality regardless of viewing angle or lighting conditions.
2Reliability
If mesh substrate with high openness is used to maintain visibility, then view through the screen is reduced, but structural integrity and insect blocking capability may be compromised
Solution Approach 1:
The patent combines a mesh substrate with specific openness greater than 30% with a reflective coating layer to create a composite structure. This composite material approach allows the substrate to provide mechanical strength and insect blocking while the coating layer provides the view reduction and privacy functionality, achieving both visibility and privacy requirements simultaneously.
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 mesh screen provides enhanced privacy by reducing view-through across all viewing angles, including both lit and unlit conditions, compared to conventional screens which offer privacy only at specific angles.
Implementation Method 1
the first major surface having a first reflectance value, wherein the first reflectance value has an average value of greater than about 10% as measured by an EN410 standard and a diffuse reflection profile at all viewing angles from −89° to 89°, excluding an angle of direct illumination
Data Source
AI summary
A screen includes a mesh substrate having an openness of greater than 30% when viewed at 0° incidence, the mesh substrate having a first major surface and a second major surface, the first major surface including a first coating, the first major surface having a first reflectance value, wherein the first reflectance value has an average value of greater than about 10% as measured by an EN410 standard and a diffuse reflection profile at all viewing angles from −89° to 89°, excluding an angle of direct illumination as measured by a scattering distribution function technique using a Goniometer, wherein the diffuse reflection profile provides a reduction in view through the mesh substrate when viewed from −89° to 89°.