Mobile Lens Uneven Surface Structure for Flare Reduction
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Solution Overview
Problem
Existing lenses in mobile electronic devices suffer from aberration and flare phenomena due to internal reflections, leading to image distortion and reduced sharpness, which conventional reflective coatings struggle to address effectively.
Innovation Solution
A lens design featuring an uneven surface structure with a base layer, uneven layer, and optional water-repellent and buffer layers, where the uneven surface structures of the lens unit and layer have distinct shapes, reducing reflectance by scattering incident light and maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional reflective coatings are used to reduce light reflection, then light transmittance is improved, but the coatings cannot effectively prevent flare phenomena caused by internal reflections
Solution Approach 1:
The patent converts the harmful internal reflection into a beneficial effect by using the reflected light to create an uneven surface structure that scatters light. The uneven layer with its irregular surface profile transforms the reflection that causes flare into a light-scattering mechanism that reduces glare and improves image quality.
Solution Approach 2:
The patent employs an uneven layer with a porous or irregular surface structure having varying heights and depths. This uneven surface structure acts as a light-trapping and scattering mechanism that prevents direct internal reflection, thereby reducing flare phenomena while maintaining high light transmittance.
2Measurement precision
If multiple lenses are combined to correct aberration, then image sharpness is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by creating an uneven surface structure at specific locations on the lens surface rather than using multiple lenses throughout the system. The uneven layer is positioned strategically to address aberration and flare issues locally, maintaining overall system simplicity while improving image sharpness.
Solution Approach 2:
The patent introduces an uneven layer as an intermediary element between the lens and the external environment. This intermediate structure serves multiple functions: correcting aberration, reducing internal reflection, and scattering light to prevent flare, thereby improving image sharpness without requiring additional lenses.
3Object-generated harmful factors
If an uneven surface structure is added to reduce reflectance, then flare is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent employs parameter changes by controlling the statistical properties of the uneven surface structure, such as root mean square roughness, correlation length, and height distribution. By optimizing these parameters, the patent achieves effective light scattering and flare reduction while using manufacturing processes that can be integrated into existing lens fabrication workflows.
Solution Approach 2:
The patent creates a composite structure by combining the conventional lens material with an uneven layer having different optical and surface properties. This composite approach allows the lens to maintain its primary focusing function while the uneven layer provides additional benefits of reduced internal reflection and flare, achievable through coating or deposition processes.
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 reflectance to less than 2%, enhancing image clarity and reducing flare effects, while maintaining optical performance and structural stability.
Implementation Method 1
the uneven surface structure of the lens unit and the uneven surface structure of the uneven layer have different shapes... reducing reflectance by scattering incident light
Data Source
AI summary
A lens includes a lens unit including an uneven surface structure, and an uneven layer formed on at least a portion of the uneven surface structure of the lens unit and comprising an uneven surface structure. The uneven surface structure of the lens unit and the uneven surface structure of the uneven layer have different shapes.