Lens Assembly Segmentation for Compact High-Resolution Optics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lens assemblies fail to simultaneously achieve miniaturization, lightweight design, and high resolution while maintaining good optical performance.
Innovation Solution
A lens assembly comprising a front lens group with a positive and negative refractive power lens, and a rear lens group with a positive and negative refractive power lens, arranged along an optical axis, satisfying specific focal length and Abbe number conditions to optimize total lens length, weight, and optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lens assembly uses conventional structures to maintain good optical performance, then the optical performance is preserved, but the total lens length, weight, and resolution requirements cannot be simultaneously met
Solution Approach 1:
The lens assembly is divided into a front lens group and a rear lens group, with each group containing specific lenses with defined refractive powers. This segmentation allows independent optimization of each group to achieve compact overall length while maintaining optical performance
Solution Approach 2:
The patent specifies precise parameter ranges including focal lengths (f1, f2, f3, f4), Abbe numbers (Vd1, Vd2, Vd3, Vd4), and their combinations. By controlling these parameters within defined ranges, the lens assembly achieves miniaturization while preserving optical quality through mathematical optimization of light refraction
2Length of moving object
If the lens assembly is miniaturized to reduce total lens length, then the total lens length is shortened, but maintaining high resolution and good optical performance becomes difficult
Solution Approach 1:
The patent defines specific parameter ranges for focal lengths and Abbe numbers that optimize the balance between compact size and resolution. The constraints on f1, f2, f3, f4 and their relationships ensure that even in a miniaturized design, the optical system maintains sufficient resolving power for high-quality imaging
Solution Approach 2:
The lens assembly uses lenses with different Abbe numbers (dispersion properties) arranged in specific groups. This composite approach to optical design allows chromatic aberration correction and high resolution to be achieved within a compact form factor by combining materials with complementary optical properties
3Weight of moving object
If the lens assembly is designed for light weight, then the weight is reduced, but the structural integrity and optical performance may be compromised
Solution Approach 1:
Dividing the lens assembly into front and rear groups with specific refractive power distributions allows each component to be optimized for minimal weight while contributing to overall optical performance. The segmented design enables using lighter materials strategically without compromising structural integrity
Solution Approach 2:
The specified parameter ranges for focal lengths and Abbe numbers are optimized to achieve the desired optical performance with minimal material usage. By precisely controlling these parameters, the design achieves light weight while maintaining reliability through mathematical optimization rather than excessive material
4Reliability
If multiple lenses with different refractive powers are arranged to correct chromatic aberration, then the optical performance is improved, but the device complexity increases
Solution Approach 1:
The chromatic aberration correction is achieved through segmentation into front and rear lens groups, each with specific positive and negative refractive power lenses. This structured segmentation organizes the complexity into manageable modules with clear functional assignments, making the multi-element design more systematic and manufacturable
Solution Approach 2:
The patent uses mathematical constraints on focal lengths and Abbe numbers to systematically control chromatic aberration correction. By defining specific parameter relationships rather than arbitrary lens configurations, the design achieves optical performance improvement through controlled parameter optimization, reducing design complexity
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 shortens total lens length, reduces weight, increases resolution, corrects chromatic aberration, and improves overall optical performance.
Implementation Method 1
The front lens group includes a first lens having positive refractive power and a second lens having negative refractive power. The rear lens group includes a third lens having positive refractive power and a fourth lens having negative refractive power
Implementation Method 2
The lens assembly satisfies: 603+Vd43 is an Abbe number of the third lens and Vd4 is an Abbe number of the fourth lens
Data Source
AI summary
A lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having positive refractive power and a second lens having negative refractive power. The rear lens group includes a third lens having positive refractive power and a fourth lens having negative refractive power, wherein the third lens includes a convex surface facing an object side and another convex surface facing an image side and the fourth lens includes a concave surface facing the image side. The first lens, the second lens, the third lens, and the fourth lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies: 13.5 mm<f+f1<20 mm; wherein f is an effective focal length of the lens assembly and f1 is an effective focal length of the first lens.