Six-Lens Optical System for High-Aperture Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional optical image capturing systems in portable electronic devices fail to meet the requirements for higher pixel counts and larger apertures, particularly for micro filming and night viewing, due to limitations in increasing incoming light and improving imaging quality.
Innovation Solution
The use of a six-piece optical image capturing system with specific refractive powers, convex and concave surfaces, and inflection points in lens elements to enhance light intake and correct optical distortions, optimizing lens parameters such as focal lengths, entrance pupil diameters, and aberration corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional four-lens or fifth-lens design is used, then device complexity is reduced, but imaging quality and light intake are insufficient for high-pixel and low-light conditions
Solution Approach 1:
The optical system is divided into six separate lens elements with specific refractive powers and surface configurations. Each lens element (first through sixth) has defined object-side and image-side surfaces with specific curvature characteristics, allowing precise control of light paths to achieve high imaging quality while maintaining manageable complexity through modular design
Solution Approach 2:
Different lens elements are assigned specific local optical properties: the first lens has positive refractive power with convex object-side surface, the second has negative refractive power with concave object-side surface, and so on. Each lens element's surfaces are optimized with specific curvature radii and inflection points to correct particular aberrations, creating local quality variations that collectively achieve superior overall imaging performance
2Illumination intensity
If aperture size is increased to improve light intake, then imaging quality in low-light conditions improves, but device size and complexity increase
Solution Approach 1:
The system optimizes multiple parameters simultaneously: focal lengths of individual lens elements (f1 through f6), entrance pupil diameter (HEP), curvature radii of lens surfaces (R1 through R20), and positions of inflection points. By carefully adjusting these parameters, the system achieves high light intake capability with an f-value ratio constraint (1.0 ≤ f/HEP ≤ 10.0) while maintaining a compact overall structure suitable for portable devices
Solution Approach 2:
The six-lens design serves multiple functions simultaneously: it provides high light intake for low-light photography, corrects various optical aberrations (spherical, coma, astigmatism, field curvature), achieves high pixel count compatibility, and maintains compact form factor. The aperture stop positioned between the third and fourth lens elements contributes to all these functions through its strategic location and diameter control
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 significantly improves imaging quality by increasing light intake and correcting optical distortions, enabling better performance in high-pixel and low-light conditions, suitable for miniaturized electronic devices.
Implementation Method 1
an optical image capturing system, in order from an object side to an image side, includes a first, second, third, fourth, fifth and sixth lens elements with refractive power
Data Source
AI summary
A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.