Lens Coating Structure for Flare Suppression in Mobile Optics
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Solution Overview
Problem
Lenses in mobile electronic devices suffer from aberration and flare phenomena due to internal reflections, which degrade image quality and resolution, and existing solutions struggle to minimize light transmittance and reflectance effectively.
Innovation Solution
A lens design featuring an uneven layer with a buffer and water-repellent coating structure, including a buffer layer conforming to the uneven layer's surface and a water-repellent layer forming a chemical bond, to reduce reflectivity and prevent internal reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a combination of various lenses is used to address aberration, then image sharpness is improved, but device complexity increases
Solution Approach 1:
The patent extracts the aberration correction function from the lens combination and transfers it to a coating layer on the lens surface. The coating layer includes an uneven layer with specific roughness (Ra: 10-100 nm) that corrects aberration through its surface structure rather than requiring multiple lens elements, thereby reducing device complexity while maintaining image sharpness.
Solution Approach 2:
The patent replaces the mechanical approach of using multiple lens elements to correct aberration with a surface coating approach. The uneven layer's microstructure on the lens surface provides aberration correction through optical interaction with light, substituting the need for complex mechanical lens assemblies.
2Object-generated harmful factors
If anti-reflective coating is applied to minimize light reflectance, then flare phenomenon is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by creating an uneven layer with specific roughness characteristics (Ra: 10-100 nm) only in the regions where light reflection needs to be minimized. This localized surface modification provides anti-reflective properties without requiring precision control over the entire lens surface, reducing manufacturing complexity while effectively reducing flare phenomenon.
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 significantly reduces reflectivity and flare occurrences, enhancing image sharpness and resolution by scattering and offsetting incident light, maintaining stability under high humidity and temperature conditions.
Implementation Method 1
The uneven layer may include an uneven structure having an irregular shape... scattering and offsetting incident light
Implementation Method 2
The water-repellent layer may form a chemical bond with the buffer layer
Data Source
AI summary
A lens includes a lens unit, an uneven layer formed on at least a portion of a surface of the lens unit, a buffer layer covering the uneven layer and having a shape conforming to an uneven surface of the uneven layer, and a water-repellent layer covering the buffer layer.