Six-Lens Imaging Assembly Aberration Correction
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Solution Overview
Problem
There is a need for imaging lens assemblies that can adapt to various applications, such as smart devices and autonomous vehicles, by providing improved image recognition capabilities and correcting aberrations across different environmental settings.
Innovation Solution
The imaging lens assembly consists of six lens elements with specific refractive powers and configurations, including negative and positive refractive powers, concave and convex surfaces, and cemented and non-cemented lens elements, which satisfy conditions such as (|P1|+|P2|)/(|P5|+|P6|)<0.60 and 0<f/R12<3.0, optimizing focal length, curvature radius, and Abbe numbers to enhance image quality and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lens assembly with multiple lens elements is used to correct aberrations and improve image quality, then image quality is improved, but device complexity increases
Solution Approach 1:
The lens assembly is divided into six distinct lens elements with alternating positive and negative refractive powers, allowing each element to be optimized for specific aberration correction while maintaining overall system performance
Solution Approach 2:
Each lens element is assigned a specific refractive power and surface configuration (convex or concave) tailored to its position in the assembly, enabling localized correction of specific optical aberrations such as spherical and chromatic aberrations
2Measurement precision
If lens elements with specific refractive powers and surface curvatures are used to correct aberrations, then aberration correction is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for each lens element including refractive power ratios (|P1|+|P2|)/(|P5|+|P6|<0.60), focal length ratios (f/F<2.0), and curvature radius relationships (f/R12<3.0), enabling optimized aberration correction while maintaining manufacturability within defined tolerances
3Area of moving object
If the focal length ratio f/F is reduced to increase field of view, then field of view is improved, but distortion increases
Solution Approach 1:
The lens assembly employs a balanced configuration of positive and negative refractive power elements that dynamically compensate for distortion across the field of view, allowing the system to maintain low distortion even at wide angles where f/F<2.0
Solution Approach 2:
The combination of lens elements with different refractive powers and Abbe numbers creates a composite optical system that corrects distortion through the interaction of multiple optical paths, achieving wide field of view with minimal distortion
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 improved image quality, compact size, and effective aberration correction, enabling the lens assembly to be applicable to a wide range of image recognition applications, including autonomous vehicles and smart devices.
Implementation Method 1
The first lens element has negative refractive power, the second lens element has positive refractive power, the third lens element has positive refractive power, the fourth lens element has positive refractive power, the fifth lens element has positive refractive power, and the sixth lens element has negative refractive power
Data Source
AI summary
An imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power. The imaging lens assembly has a total of six lens elements.