Five-Lens Optical Assembly Aberration Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lens assemblies fail to meet the requirements of high resolution and lower cost while maintaining good optical performance.
Innovation Solution
A lens assembly comprising a sequence of lenses with specific refractive powers and surface curvatures, including negative and positive refractive powers, arranged along an optical axis, with conditions such as 3<f2/f3<4 and ā3.5<R31/R32<ā1.9, to correct aberrations and enhance resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional lens assembly structures are used, then manufacturing cost is reduced, but resolution and optical performance deteriorate
Solution Approach 1:
The patent applies parameter changes by optimizing the refractive powers and focal lengths of individual lenses in the five-lens assembly. Specific ratios are defined (e.g., 0.3 < f1/f2 < 0.5, 2 < |f4/f3| < 4) to achieve high resolution while maintaining manufacturability. This systematic parameter optimization allows conventional manufacturing processes to produce high-performance lenses without requiring exotic materials or complex fabrication techniques.
Solution Approach 2:
The patent employs composite material strategies by combining different lens materials with specific refractive indices and dispersion properties. The five-lens assembly uses materials with varying optical characteristics to correct chromatic and spherical aberrations, achieving high resolution through material composition rather than single-material perfection. This allows cost-effective manufacturing using readily available optical materials.
2Ease of manufacture
If lens assembly structure is simplified to reduce cost, then manufacturing ease improves, but optical performance and resolution deteriorate
Solution Approach 1:
The patent divides the optical system into five distinct lens elements, each with specific refractive power (positive or negative) and focal length. This segmentation allows each lens to be optimized for particular aberration corrections while maintaining overall system performance. The modular five-lens design can be manufactured using standard processes while achieving superior optical performance through the coordinated arrangement of individual elements.
Solution Approach 2:
The patent applies local quality by assigning different refractive powers and focal lengths to specific lens positions in the assembly. The first lens has negative refractive power with specific focal length relationships to subsequent lenses, creating localized optimization at each position. This ensures that each part of the optical system contributes specifically to correcting particular aberrations, maintaining high optical performance without requiring uniform complexity throughout.
3Measurement precision
If more lenses are added to improve resolution, then optical performance improves, but device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates unnecessary lens elements from the optical system, achieving high resolution with a compact five-lens assembly. By carefully selecting which lens elements are needed and removing redundant components, the design achieves optimal performance without excessive complexity. The specific arrangement of five lenses with defined refractive powers extracts only the essential elements required for aberration correction and image quality.
Solution Approach 2:
The patent merges multiple optical functions into the five-lens assembly, where each lens simultaneously contributes to focusing, aberration correction, and field curvature control. The combined action of the five lenses with their specific focal length relationships (e.g., 0.3 < f1/f2 < 0.5, 2 < |f4/f3| < 4) achieves high resolution while maintaining a compact, integrated structure rather than requiring separate components for each function.
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 lens assembly effectively corrects aberrations and increases resolution, achieving good optical performance with optimized lens configurations and materials like glass and plastic.
Implementation Method 1
The first lens has negative refractive power, the second lens has positive refractive power, the third lens has positive refractive power, the fourth lens has negative refractive power, and the fifth lens has negative refractive power
Data Source
AI summary
A 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 has negative refractive power. The second lens has positive refractive power. The third lens has positive refractive power. The fourth lens has negative refractive power including a convex surface facing the object side and a concave surface facing the image side. The fifth lens has negative refractive power including a concave surface facing the object side.