Six-Element Lens System for Compact High-Resolution Imaging
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Solution Overview
Problem
Conventional compact optical systems for electronic devices, such as smartphones and tablets, fail to meet the requirements of high resolution, image quality, and large field of view while maintaining a compact size due to limitations in lens design, particularly with five- or six-element lens structures.
Innovation Solution
A six-element lens system with specific refractive powers and surface shapes, including aspheric surfaces, is designed with air gaps between elements to optimize image quality, field of view, and compactness, using materials like plastic for the lens elements to reduce manufacturing complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional five-element lens structure is used, then the device complexity is reduced, but the image quality and resolution are insufficient
Solution Approach 1:
The patent applies a six-element lens structure where each lens element serves multiple functions: correcting aberrations, focusing light, and enabling high-resolution imaging. This multi-functional design achieves superior image quality without proportionally increasing device complexity, as the additional element integrates seamlessly into the existing optical path.
Solution Approach 2:
The patent optimizes specific parameters of the six-element lens system, including refractive indices, curvature radii, and thicknesses of each lens element. By precisely controlling these parameters, the system achieves high image quality and resolution while maintaining a compact form factor suitable for portable electronic devices.
2Manufacturing precision
If a six-element lens structure with large aperture is used, then the resolution and image quality are enhanced, but the field of view and compact size requirements cannot be satisfied simultaneously
Solution Approach 1:
The patent employs aspheric surfaces on specific lens elements (particularly the fourth and fifth elements) to locally optimize light refraction. This allows the system to maintain a large aperture for high resolution while the aspheric profiles correct off-axis light rays to expand the field of view, resolving the contradiction between aperture size and field of view.
Solution Approach 2:
The patent utilizes aspheric curvature profiles instead of simple spherical surfaces. The aspheric surfaces on the fourth and fifth lens elements enable the system to capture both on-axis and off-axis light rays effectively, achieving a wide field of view while maintaining the large aperture necessary for high resolution imaging.
3Manufacturing precision
If a six-element lens structure with large aperture is used, then the resolution and image quality are enhanced, but the compact size requirement cannot be satisfied
Solution Approach 1:
The patent arranges the six lens elements in a compact sequence with optimized spacing between them. The lens elements are positioned closely together with minimal air gaps, creating a nested-like configuration that reduces the overall optical path length while maintaining the six-element structure necessary for high image quality.
Solution Approach 2:
The patent optimizes the thickness and spacing parameters of each lens element to minimize the total optical system length. By carefully controlling these dimensional parameters, the system achieves compact size suitable for portable devices while maintaining the six-element configuration required for superior image quality and resolution.
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 system achieves improved image quality, increased field of view, and compactness, effectively addressing the limitations of conventional designs by balancing refractive powers and reducing aberrations, while being suitable for use in electronic devices with multiple image capturing units for composite image processing.
Implementation Method 1
A lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element
Data Source
AI summary
A lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has a concave image-side surface in a paraxial region. The second lens element with refractive power has a convex object-side surface in a paraxial region. The third lens element has positive refractive power. The fourth lens element with positive refractive power has an object-side and an image-side surfaces being aspheric. The fifth lens element with negative refractive power has an aspheric concave object-side surface and an aspheric convex image-side surface in a paraxial region. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region with a convex shape in an off-axis region.