Five-Element Wide-Angle Lens Assembly Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wide-angle lenses fail to meet the requirements of large field of view, large aperture, compact size, high resolution, and resistance to environmental changes, particularly in extreme conditions.
Innovation Solution
A compact wide-angle imaging optical lens assembly comprising five lens elements with specific refractive powers and surface curvatures, including a first lens element with negative refractive power, a second and third lens element with concave and convex surfaces, a fourth lens element with positive refractive power, and a fifth lens element with negative refractive power, optimized by conditions such as central thickness ratios, focal lengths, and axial distances to achieve improved image quality and environmental resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional wide-angle lens designs are used, then the field of view can be expanded, but the resolution and image quality deteriorate
Solution Approach 1:
The lens assembly is divided into five distinct lens elements with different refractive powers and surface curvatures. Each element is optimized for specific functions: the first element (negative power) expands the field of view, while the second through fifth elements progressively correct aberrations and sharpen the image, resolving the contradiction between wide angle and resolution
Solution Approach 2:
Different regions of the lens assembly are assigned different optical properties. The first lens element has negative refractive power for wide-angle coverage, while subsequent elements have positive or negative powers tailored to correct specific aberrations in different field regions, maintaining high resolution across the entire wide field of view
2Volume of moving object
If the lens assembly size is reduced for compact design, then the portability is improved, but the aperture and image quality worsen
Solution Approach 1:
The five lens elements are arranged in a compact nested configuration along the optical axis with optimized axial distances. The elements are positioned closely together with precise spacing, allowing the entire assembly to maintain a compact form factor while each element contributes to high image quality through its specific optical function
Solution Approach 2:
The patent optimizes critical parameters including the axial distances between elements, the central thicknesses of individual elements, and the refractive powers. By carefully adjusting these parameters, the design achieves compact size while maintaining large aperture capability and high image quality through precise optical path control
3Measurement precision
If the lens elements are optimized for high resolution, then the image quality is improved, but the complexity of the lens assembly increases
Solution Approach 1:
The complex task of achieving high resolution is segmented across five specialized lens elements. Each element handles a specific aspect of aberration correction or image formation, distributing the complexity across multiple simple, well-defined components rather than requiring a single complex element
Solution Approach 2:
Multiple optical functions are merged into a single integrated lens assembly. The five elements work together as a unified system, combining wide-angle capability, aberration correction, and high resolution in one compact unit, managing complexity through functional integration rather than separate systems
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 a wide-angle lens assembly with enhanced field of view, high resolution, compact size, and resistance to environmental changes, effectively addressing the limitations of conventional lenses by optimizing the arrangement of refractive power, surface shape, and axial distances within the lens elements.
Implementation Method 1
an imaging optical 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 and a fifth lens element
Data Source
AI summary
An imaging optical 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 and a fifth lens element. The first lens element with negative refractive power has an image-side surface being concave. The second lens element has an object-side surface being concave and an image-side surface being convex. The third lens element has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element with negative refractive power has an object-side surface being concave.