Six-Lens Imaging System for High-Resolution Vehicle Cameras
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Solution Overview
Problem
Vehicles equipped with cameras for autonomous driving face challenges in achieving high-resolution imaging due to structural and design limitations of vehicle components, such as bumpers, which restrict arbitrary changes in lens sizes.
Innovation Solution
The proposed imaging lens system consists of six lenses disposed in a specific order, with certain lenses having concave or convex surfaces, and satisfying specific conditional expressions for focal lengths, diameters, and field of view, to optimize imaging performance without significant lens size changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lens diameters are increased to implement high resolution, then imaging resolution is improved, but device size and structural complexity increase
Solution Approach 1:
The patent applies parameter changes by precisely controlling the focal lengths, diameters, and spacing of six lenses to achieve high resolution without increasing overall lens size. The conditional expressions define specific parameter ranges that optimize imaging performance within compact dimensions.
Solution Approach 2:
The imaging lens system is segmented into six individual lenses with different refractive powers and surface curvatures. This segmentation allows each lens to contribute differently to the overall imaging function, achieving high resolution through coordinated optimization of multiple smaller components rather than relying on a single large lens.
2Measurement precision
If lens sizes are changed to improve imaging performance, then resolution is improved, but adaptability to vehicle component structures decreases
Solution Approach 1:
The patent uses parameter changes to achieve high resolution within fixed size constraints imposed by vehicle components. By adjusting focal lengths, refractive indices, and lens spacing within specific ranges defined by conditional expressions, the system optimizes imaging performance without requiring changes to the overall lens assembly dimensions.
3Measurement precision
If focal lengths are adjusted to improve resolution, then imaging precision is improved, but field of view may be reduced
Solution Approach 1:
The patent segments the imaging function across six lenses with different focal characteristics. This allows the system to achieve high imaging precision through the combined effect of multiple lenses while maintaining a wide field of view, as each lens contributes differently to the overall optical performance.
Solution Approach 2:
The patent optimizes imaging performance by considering multiple dimensions simultaneously - focal lengths, diameters, spacing, and surface curvatures of all six lenses. This multi-dimensional optimization allows the system to achieve high precision imaging while maintaining wide field of view through coordinated adjustment of parameters across different spatial and optical dimensions.
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
This configuration enables the imaging lens system to achieve high-resolution imaging while minimizing changes in lens sizes, thus overcoming the structural limitations of vehicle components.
Implementation Method 1
a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side
Implementation Method 2
a third lens having positive refractive power and having a convex image-side surface
Implementation Method 3
the imaging lens system satisfies conditional expressions of 0.23 mm/°
Data Source
AI summary
An imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side, wherein the imaging lens system satisfies conditional expressions of 0.23 mm/°<D1/HFOV<0.35 mm/° and 0.15<ImgH/TTL<0.20, where D1 is an effective diameter of the first lens, HFOV is a field of view of the imaging plane in a horizontal direction, ImgH is a height of the imaging plane, TTL is a distance from an object-side surface of the first lens to the imaging plane.