Eight-Element Optical Imaging Lens for Compact High-Aperture Design
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Solution Overview
Problem
Designing optical imaging lenses with large apertures and high pixel counts within a limited system length while maintaining better resolution is challenging, as it requires balancing multiple lens elements to achieve optimal imaging quality.
Innovation Solution
The optical imaging lens comprises eight specifically configured lens elements with varying refractive powers and surface shapes, including concave and convex regions, to optimize aperture size, image height, and resolution, adhering to specific inequalities that ensure effective light transmission and aberration control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture is enlarged to receive more imaging rays, then the light gathering ability is improved, but the system length increases and design difficulty increases
Solution Approach 1:
The optical imaging lens is divided into eight lens elements with different refractive powers and surface shapes. Each lens element is specifically designed to perform particular optical functions, allowing the system to achieve large aperture and good imaging quality within a limited length by distributing optical tasks across multiple segmented components rather than relying on a single element.
Solution Approach 2:
Different lens elements are assigned different local optical properties including positive and negative refractive powers, and specific surface shapes (convex or concave object-side and image-side surfaces). This local differentiation allows each element to contribute optimally to aberration correction and light focusing, enabling the system to maintain compact length while achieving large aperture performance.
2Measurement precision
If the pixel count is increased to improve resolution, then the image quality is improved, but the system length increases
Solution Approach 1:
The lens system is segmented into eight elements that work together to deliver high-resolution imaging. The segmentation allows for optimized light path control and aberration correction across the image field, enabling support for high pixel count sensors without proportionally increasing system length.
Solution Approach 2:
The patent employs parameter changes in the form of varying refractive powers (positive and negative), different Abbe numbers, and specific surface curvature configurations across the eight lens elements. These parameter variations enable compact design while maintaining the optical performance needed for high-resolution imaging.
3Measurement precision
If multiple lens elements are added to improve imaging quality, then the resolution and aperture are improved, but the device complexity increases
Solution Approach 1:
The optical system is segmented into eight lens elements, each with specifically configured object-side and image-side surfaces. This segmentation enables sophisticated optical performance through distributed functionality while maintaining a systematic and manageable design approach.
Solution Approach 2:
Each lens element is assigned specific local optical characteristics including refractive power sign (positive or negative), surface shape (convex or concave), and Abbe number ranges. This local quality differentiation allows the complex multi-element system to be designed and analyzed in a structured manner, with each element contributing specific optical functions.
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 effectively shortens the system length, enlarges the aperture, and increases image height, resulting in improved imaging quality by minimizing aberrations and optimizing light focus across different wavelengths.
Implementation Method 1
Each of the first, second, third, fourth, fifth, sixth, seventh and eighth lens element may also have an object-side surface facing toward the object side and allowing imaging rays to pass through and an image-side surface facing toward the image side and allowing the imaging rays to pass through
Data Source
AI summary
The present invention provides an optical imaging lens. The optical imaging lens comprises eight lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements, the optical imaging lens may be provided with shortened system length, enlarged aperture, and increased image height and resolution, along with good imaging quality.