Micro-lens Module with Composite Lenses for Reflection Reduction
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Solution Overview
Problem
Current micro-camera lenses in portable electronic devices suffer from poor imaging quality due to significant reflection issues between different material interfaces, despite their miniaturized size and manufacturing convenience.
Innovation Solution
A micro-lens module design featuring multiple lens groups, including complex lenses with varying refractive indices, arranged between the object and image sides to improve imaging quality while maintaining a compact size, with specific configurations such as plano-concave, plano-convex, and concave-convex lenses, and a transparent flat panel serving as an aperture stop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a micro camera lens is miniaturized to satisfy portability demands, then the size of the lens is reduced, but the imaging quality deteriorates due to serious reflection problems between interfaces of different materials
Solution Approach 1:
The patent applies composite materials by combining multiple lenses with different refractive indexes (first lens with refractive index n1, second lens with refractive index n2 where n1 ≠ n2) to form a complex lens structure. This composite approach reduces reflection at interfaces between different materials while maintaining the miniaturized size, thereby improving imaging quality without sacrificing portability requirements
Solution Approach 2:
The patent implements local quality by creating a complex lens where different regions (first lens and second lens) have different refractive indexes tailored to specific optical functions. The first lens and second lens are specifically designed with different material properties to address reflection problems at particular interfaces, while the overall structure remains compact
2Manufacturing precision
If multiple lenses with different refractive indexes are combined to improve imaging quality, then the imaging quality is enhanced, but the device complexity increases
Solution Approach 1:
The patent merges multiple lenses (first lens and second lens with different refractive indexes) into a single integrated complex lens assembly that functions as one optical unit. This combining approach improves imaging quality by addressing reflection problems while managing device complexity through unified integration rather than separate components
Solution Approach 2:
The complex lens structure serves multiple functions simultaneously: the first lens and second lens with different refractive indexes collectively address reflection problems, control light paths, and achieve focusing functionality, thereby improving imaging quality without requiring additional separate optical components that would increase device complexity
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 achieves enhanced imaging quality and miniaturization while ensuring manufacturing convenience, as demonstrated by optical simulation data showing improved field curvature and distortion diagrams.
Implementation Method 1
The complex lens includes a plurality of lenses adhered to each other, and a refractive index of at least one lens in the lenses is different from refractive indexes of the other lens
Data Source
AI summary
A micro-lens module including a plurality of lens groups is provided. The lens groups are disposed between an object side and an image side, wherein at least one lens group in the lens groups is composed by a complex lens. The complex lens includes a plurality of lenses, the lenses are adhered to each other, and an index of at least one lens in the lenses is different from indexes of the other lens in the lenses. The provided micro-lens module has an improved imaging quality and a miniaturized size while considering a manufacturing convenience.