Five-Lens Optical System Aberration Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical systems for portable electronic devices face challenges such as large aberration, poor image quality at the periphery, and difficulty in manufacturing due to the need for large apertures, while also requiring high pixels, high image quality, and a wide angle of view.
Innovation Solution
A compact optical image capturing system using a combination of five-piece optical lenses with specific refractive powers and aspheric surfaces to increase light intake and improve imaging quality, including a fifth lens with inflection points to adjust incident angles and correct aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture is increased to capture more light in dark environments, then the quantity of light entering the lens is improved, but aberration increases and image quality at the periphery deteriorates
Solution Approach 1:
The optical system is divided into five separate lens elements with different refractive powers and surface curvatures. Each lens element contributes to correcting specific types of aberrations while collectively enabling large aperture operation. The segmentation allows complex optical correction functions to be distributed across multiple simpler components.
Solution Approach 2:
Different regions of the optical system are designed with different properties. The first lens has positive refractive power with specific convex-concave surface configurations, while the second lens has negative refractive power. Each lens element's surfaces are optimized with specific curvature radii and aspheric coefficients to correct aberrations in specific regions of the optical field.
2Illumination intensity
If the aperture is increased to capture more light in dark environments, then the quantity of light entering the lens is improved, but manufacturing difficulty increases
Solution Approach 1:
The lens elements utilize aspheric surfaces with precisely defined curvature radii and aspheric coefficients. This allows the lenses to correct spherical aberration and other optical imperfections while maintaining manufacturability through standardized aspheric manufacturing processes. The specific curvature designs enable complex optical correction without requiring exotic or difficult-to-manufacture surface geometries.
3Adaptability or versatility
If a wide angle of view is implemented, then the field of view is improved, but distortion increases
Solution Approach 1:
The wide-angle optical system is achieved through segmentation into five lens elements, each contributing to the overall field of view and distortion correction. The distributed design allows different lens elements to handle different portions of the wide field of view, with each element optimized to minimize local distortion while contributing to the cumulative wide-angle effect.
Solution Approach 2:
The optical system employs specific parameter relationships between lens elements, including ratios of focal lengths, curvature radii, and spacing distances. These parameter optimizations enable the system to achieve wide field of view while maintaining acceptable distortion levels through precise control of optical path geometry.
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 enhanced imaging quality, reduced size, and improved optical performance by optimizing lens parameters and surface shapes, addressing issues of aberration and image quality while enabling high-pixel, high-quality image capture in compact electronic devices.
Implementation Method 1
The first lens has positive refractive power
Implementation Method 2
The second lens has negative refractive power
Implementation Method 3
Both the object-side surface and the image-side surface of the fifth lens are aspheric surfaces
Data Source
AI summary
A five-piece optical lens for capturing image and a five-piece optical module for capturing image, along the optical axis in order from an object side to an image side, include a first lens with positive refractive power having a convex object-side surface; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; and a fifth lens with negative refractive power; and at least one of the image-side surface and object-side surface of each of the five lens elements are aspheric. The optical lens can increase aperture value and improve the imaging quality for use in compact cameras.