Seven-Lens Optical Module Length Reduction
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Solution Overview
Problem
High-resolution lens modules with multiple lenses face challenges in miniaturization due to increased length, making them difficult to install in slim mobile communications terminals.
Innovation Solution
A lens module design featuring seven lenses with specific refractive powers and shapes, including meniscus and aspheric surfaces, optimized to reduce overall length while maintaining a wide field of view, using materials like plastic and glass with high refractive indices to minimize curvature and manufacturing defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-resolution optical system is configured using multiple lenses, then image quality is improved, but the length of the optical system increases
Solution Approach 1:
The optical system is divided into seven separate lens elements with specific shapes and refractive powers. Each lens element contributes to correcting optical aberrations and achieving high image quality, while the segmented design allows for optimized spacing and positioning to control the overall length of the optical system.
Solution Approach 2:
The patent specifies precise parameters for each lens element including refractive power, surface curvature radii, and thickness. By carefully controlling these parameters, the design achieves high-resolution imaging while maintaining a compact optical system length suitable for slim mobile terminals.
2Ease of operation
If the optical system length is reduced for slim terminal installation, then ease of installation is improved, but image quality may deteriorate
Solution Approach 1:
Different lens elements are assigned specific shapes (meniscus, convex, concave) and refractive powers tailored to their positions in the optical system. This local optimization ensures that each lens element contributes maximally to image quality correction while the overall compact design enables easy installation in slim terminals.
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 a compact lens module with a wide field of view of 80° or more and a reduced overall length of 5.80 mm or less, effectively miniaturizing the module while maintaining high image quality and resolving the installation issue in slim terminals.
Implementation Method 1
first to seventh lenses each having refractive power and sequentially disposed in numerical order from the first lens to the seventh lens starting from an object side of the lens module
Data Source
AI summary
A lens module includes first to seventh lenses each having refractive power and sequentially disposed in numerical order from the first lens to the seventh lens starting from an object side of the lens module, wherein each of the first and second lenses has a meniscus shape and an image-side surface that is convex, and the seventh lens has one or more inflection points on an image-side surface thereof.