Ten-Lens Optical Imaging System Aberration Correction
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Solution Overview
Problem
Conventional optical systems face challenges in achieving a balance between high image quality, low sensitivity, proper aperture size, miniaturization, and a desirable field of view, making it difficult to meet the increasing functionality requirements of electronic devices with advanced image sensors.
Innovation Solution
An optical imaging lens system comprising ten lens elements, carefully designed with specific refractive powers, surface shapes, and distances to optimize image quality, including positive and negative refractive powers, concave and convex surfaces, and inflection points, while maintaining compactness and correcting aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of lens elements is increased to improve image quality, then image quality is improved, but device complexity and size increase
Solution Approach 1:
The optical system is divided into ten distinct lens elements with specific refractive powers and surface shapes. Each lens element is designed to address specific aberrations and optical requirements, allowing the system to achieve high image quality through segmented functional distribution rather than a single complex element
Solution Approach 2:
Different lens elements are assigned different refractive powers (positive and negative), surface curvatures (convex and concave), and material properties (different Abbe numbers). This local differentiation allows each element to optimize for specific optical functions while maintaining overall system performance
2Use of energy by moving object
If the aperture size is increased to improve light gathering, then light gathering is improved, but sensitivity increases which is undesirable
Solution Approach 1:
The system optimizes the aperture size and f-number as specific parameters to achieve the desired balance between light gathering and sensitivity. The conditional expressions involving axial distances and focal lengths further refine the optical parameters to control sensitivity while maintaining adequate light gathering capability
3Area of stationary object
If the field of view is expanded to improve coverage, then field of view is improved, but aberrations increase which degrades image quality
Solution Approach 1:
The lens elements feature asymmetric surface shapes with inflection points and varying curvatures (convex and concave regions). This asymmetric design allows the system to expand the field of view while correcting for off-axis aberrations that typically degrade image quality at the edges
Solution Approach 2:
The lens surfaces incorporate various curvature profiles including inflection points where the curvature changes sign. These curved surfaces are specifically designed to redirect light rays across a wider field of view while maintaining focus and correcting aberrations throughout the image plane
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 system achieves improved image quality, compactness, and increased field of view, effectively addressing the balance of requirements for modern electronic devices with advanced image sensors.
Implementation Method 1
The second lens element has positive refractive power. Each of the ten lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side.
Data Source
AI summary
An optical imaging lens system includes ten lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, a ninth lens element and a tenth lens element. Each of the ten lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The second lens element has positive refractive power. The image-side surface of the tenth lens element is concave in a paraxial region thereof, and the image-side surface of the tenth lens element has at least one inflection point.