Wide-Angle Lens Assembly Miniaturization and Aberration Control
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Solution Overview
Problem
Current wide-angle lens assemblies fail to simultaneously achieve miniaturization, a large field of view, high resolution, and resistance to severe environmental temperature variations while maintaining good optical performance.
Innovation Solution
A wide-angle lens assembly comprising a specific arrangement of meniscus lenses with varying refractive powers and surface curvatures, including a first meniscus lens with negative refractive power, a second meniscus lens with positive refractive power, a third biconvex lens with positive refractive power, and a fifth lens with negative refractive power, arranged along an optical axis, satisfying specific focal length and curvature ratios to optimize optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens assembly is miniaturized to reduce total length, then the field of view and optical performance deteriorate
Solution Approach 1:
The lens assembly is divided into five separate lens elements with specific refractive powers arranged along the optical axis. This segmentation allows each lens to contribute specifically to the overall optical function, enabling a compact total length while maintaining a large field of view through the coordinated action of individual lens segments.
Solution Approach 2:
The patent specifies precise parameter relationships including the ratio of effective focal lengths (f2/f1 between -0.5 and -2.0), curvature radii (R11/R12 between 0.1 and 10), and thickness ratios (T1/T3 between 0.2 and 5). By optimizing these parameters, the lens assembly achieves miniaturization while preserving field of view and optical performance.
2Length of moving object
If the lens assembly is miniaturized to reduce total length, then the resolution and optical performance deteriorate
Solution Approach 1:
The patent establishes specific parameter ranges including the ratio of effective focal lengths (f2/f1 between -0.5 and -2.0), curvature radii (R11/R12 between 0.1 and 10), and thickness ratios (T1/T3 between 0.2 and 5). By optimizing these parameters, the lens assembly achieves miniaturization while preserving field of view and optical performance.
Solution Approach 2:
The lens assembly uses multiple lens elements with different refractive powers and material properties arranged in sequence. This composite structure enables the system to achieve high resolution and excellent optical performance within a compact total length by combining the advantages of individual lens elements.
3Area of moving object
If the lens assembly is designed for large field of view, then the total lens length and complexity increase
Solution Approach 1:
The lens assembly is divided into five separate lens elements with specific refractive powers arranged along the optical axis. This segmentation allows each lens to contribute specifically to the overall optical function, enabling a compact total length while maintaining a large field of view through the coordinated action of individual lens segments.
4Measurement precision
If the lens assembly is designed for high resolution, then the total lens length and complexity increase
Solution Approach 1:
The patent establishes specific parameter ranges including the ratio of effective focal lengths (f2/f1 between -0.5 and -2.0), curvature radii (R11/R12 between 0.1 and 10), and thickness ratios (T1/T3 between 0.2 and 5). By optimizing these parameters, the lens assembly achieves miniaturization while preserving field of view and optical performance.
Solution Approach 2:
The lens assembly uses multiple lens elements with different refractive powers and material properties arranged in sequence. This composite structure enables the system to achieve high resolution and excellent optical performance within a compact total length by combining the advantages of individual lens elements.
5Reliability
If the lens assembly is designed to resist temperature variation, then the structure and complexity increase
Solution Approach 1:
The patent specifies precise parameter relationships including the ratio of effective focal lengths (f2/f1 between -0.5 and -2.0), curvature radii (R11/R12 between 0.1 and 10), and thickness ratios (T1/T3 between 0.2 and 5). By optimizing these parameters, the lens assembly achieves miniaturization while preserving field of view and optical performance.
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 effectively shortens the total lens length, increases the field of view, enhances resolution, and improves resistance to environmental temperature changes, while correcting aberrations and maintaining good optical performance across different temperatures.
Implementation Method 1
The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive refractive power and includes a concave surface facing an object side and a convex surface facing an image side.
Data Source
AI summary
A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive refractive power and includes a concave surface facing the object side and a convex surface facing the image side. The third lens is with positive refractive power and includes a convex surface facing the object side. The fourth lens is with positive refractive power. The fifth lens is with negative refractive power. The wide-angle lens assembly satisfies: −3<f2/f1<−1; wherein f1 is an effective focal length of the first lens and f2 is an effective focal length of the second lens.