Five-Lens Imaging Module Aberration Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional imaging lenses face challenges in achieving high optical performance, miniaturization, and cost-effectiveness, particularly in smartphone cameras, where a balance between aberration correction, size, weight, and price competitiveness is difficult to maintain.
Innovation Solution
The design of an imaging lens comprising a sequence of five lenses with specific refractive powers and surface shapes, including a first negative refractive power lens, a second positive refractive power lens with a convex object side surface, a third negative refractive power lens, a fourth lens with a convex image side surface, and a fifth lens with an inflection point on its image side surface, optimized to satisfy conditions for focal length, aberration correction, and chromatic aberration control, using plastic materials for reduced weight and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of lenses are used to secure optical performance, then aberration correction is improved, but the camera size and weight increase
Solution Approach 1:
The patent applies parameter changes by optimizing the refractive powers, curvatures, and spacing of each lens element. The specific configuration of five lenses with alternating positive and negative refractive powers, along with carefully controlled surface curvatures and air gaps, achieves superior aberration correction in a compact form factor. This resolves the contradiction by finding optimal parameter values that deliver high optical performance without requiring more lens elements.
2Reliability
If a large number of lenses are used to secure optical performance, then aberration correction is improved, but manufacturing cost increases
Solution Approach 1:
The patent achieves cost-effective manufacturing by optimizing the parameters of a five-lens system. The specific design with controlled curvatures, refractive powers, and air gaps allows for precise aberration correction using a manageable number of elements, reducing manufacturing complexity and cost while maintaining high optical performance.
3Length of moving object
If the imaging lens is miniaturized for smartphone use, then device size is reduced, but optical performance may deteriorate
Solution Approach 1:
The patent successfully miniaturizes the imaging lens module while maintaining excellent optical performance through careful parameter optimization. The five-lens configuration with specifically designed curvatures, refractive powers, and spacing achieves superior aberration correction in a compact form factor suitable for smartphones, resolving the contradiction between size reduction and performance maintenance.
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 achieves high optical performance, wide angles, and reduced size and weight, while effectively correcting aberrations and maintaining cost competitiveness, making it suitable for compact imaging devices like smartphones.
Implementation Method 1
a first lens L1 having a negative refractive power; a second lens L2 having a positive refractive power and having a convex object side surface; a third lens L3 having a negative refractive power; a fourth lens L4 having a convex image side surface; and a fifth lens L5 having an image side surface, the image side surface having an inflection point
Data Source
AI summary
An imaging lens is provided comprising: a first lens having a negative refractive power; a second lens having a positive refractive power and having a convex object side surface; a third lens having a negative refractive power; a fourth lens having a convex image side surface; and a fifth lens having an image side surface, the image side surface having an inflection point, wherein, the first, second, third, fourth, and fifth lenses are sequentially arranged from a front end of the imaging lens to a rear end of the imaging lens, and the imaging lens.