Integrated Anti-Reflection Coating for Scratch-Resistant Camera Lenses
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Solution Overview
Problem
Existing anti-reflection coatings on optical components in camera modules have low adhesive strength, leading to easy detachment and reduced scratch resistance, which exacerbates ghosting and glare issues in photography.
Innovation Solution
Integrally forming the anti-reflection coating with the optical component body using the same base material, incorporating protrusions and bumps to enhance adhesive strength and reduce reflectance, while maintaining optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a glass lens is used, then imaging performance is improved, but processing complexity and cost increase due to precision requirements and fragility
Solution Approach 1:
The patent changes the material parameter from glass to plastic resin, which fundamentally alters the processability and mechanical properties. Plastic lenses can be molded using injection molding or compression molding, eliminating the need for complex precision grinding and polishing processes required for glass lenses, thus reducing processing complexity while maintaining imaging performance through proper optical design
Solution Approach 2:
The patent adopts plastic material that is cheaper and easier to manufacture than glass. Plastic lenses can be produced through cost-effective molding processes, reducing both manufacturing cost and processing complexity. The material is more tolerant of manufacturing variations, allowing for simpler production processes without sacrificing functional performance
2Reliability
If a glass lens is used, then imaging performance is improved, but handling difficulty increases due to fragility
Solution Approach 1:
The patent changes the material from brittle glass to ductile plastic, fundamentally improving mechanical toughness and impact resistance. Plastic lenses can withstand bending, dropping, and rough handling that would shatter glass lenses, making them much easier to handle, install, and maintain in various environments including mobile devices and consumer electronics
3Ease of manufacture
If molding process is used for plastic lens, then processing ease is improved, but silver spots and bubbles appear on lens surface
Solution Approach 1:
The patent applies a coating layer to the plastic lens surface before or after molding to prevent silver spots and bubbles from forming or becoming visible. This preliminary protective action addresses the molding defects by creating a barrier layer that masks surface imperfections and prevents further degradation, allowing the molding process to proceed with its inherent advantages while achieving acceptable surface quality
Solution Approach 2:
The coating layer acts as an intermediary between the plastic lens material and the external environment. This intermediate layer masks the silver spots and bubbles that inevitably form during molding, providing a smooth, optically acceptable surface without requiring complete elimination of the underlying molding defects
4Manufacturing precision
If precision grinding and polishing is used for glass lens, then lens precision is improved, but processing time and cost increase
Solution Approach 1:
The patent changes the material from glass to plastic, which allows the lens to be formed directly through molding processes rather than requiring sequential precision grinding and polishing steps. The molding process creates the lens shape and optical surfaces in a single step, dramatically reducing manufacturing time while achieving sufficient precision for the application through proper mold design and material properties
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 provides excellent scratch resistance and reduces ghosting and glare by ensuring the anti-reflection coating remains intact, with improved adhesive strength and minimal manufacturing complexity.
Implementation Method 1
a vapor deposition process
Data Source
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AI summary
Embodiments of this application provide an optical component, a camera module, a terminal, and an optical component processing method, and relate to the field of terminal technologies, so as to increase adhesive strength between an anti-reflection coating and an optical component body, improve a scratch-resistant property of the anti-reflection coating, and prevent the anti-reflection coating from falling off. The optical component includes an optical component body and an anti-reflection coating, the anti-reflection coating is disposed on at least one surface of the optical component body through which light passes, the anti-reflection coating is configured to reduce reflectance of the at least one surface, and the anti-reflection coating and the optical component body are integrally formed. The optical component provided in the embodiments of this application is used in the camera module in the terminal.