Nine-Element Optical Imaging Lens for High Resolution and Aperture
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Solution Overview
Problem
Existing optical imaging lenses face challenges in achieving high pixel number, high resolution, and large aperture stop while maintaining a compact size and image height, as traditional designs struggle to balance these factors effectively.
Innovation Solution
An optical imaging lens design comprising nine lens elements with specific convex and concave surface shapes and refractive indices, along with defined inequalities, to enhance resolution and aperture stop while maintaining a slim and compact form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of lens elements is increased to improve resolution and enlarge aperture stop, then imaging quality and aperture are improved, but device complexity and system length increase
Solution Approach 1:
The optical imaging lens is divided into nine separate lens elements with specific configurations (first through ninth lens elements), each contributing to overall resolution enhancement while distributing the optical functions across multiple components rather than relying on fewer complex elements
Solution Approach 2:
Different lens elements have different refractive powers and surface characteristics (convex/concave combinations) optimized for specific regions of the optical path, with the fourth lens element having a convex object-side surface and concave image-side surface, and the ninth lens element having a concave object-side surface and convex image-side surface
2Quantity of substance
If the image height is increased to accommodate high pixel number, then pixel capacity is improved, but device size and system length increase
Solution Approach 1:
The patent achieves increased image height (accommodating high pixel number) while controlling system length by optimizing the lateral dimensions and angular relationships of the optical path, rather than simply extending the axial length of the system
3Illumination intensity
If the aperture stop is enlarged to improve light gathering, then illumination is improved, but depth of field control and imaging quality become more difficult
Solution Approach 1:
The patent achieves enlarged aperture stop with maintained imaging quality by precisely controlling the refractive indices, curvature radii, and thickness parameters of all nine lens elements, optimizing the optical path to correct aberrations introduced by the larger aperture
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 design achieves increased resolution, enlarged aperture stop, and improved image height with good imaging quality, facilitating efficient imaging in mobile devices.
Implementation Method 1
Each of the first, second, third, fourth, fifth, sixth, seventh, eighth and ninth lens elements may also have an object-side surface facing toward the object side and allowing imaging rays to pass through. Each of the first, second, third, fourth, fifth, sixth, seventh, eighth and ninth lens elements may also have an image-side surface facing toward the image side and allowing the imaging rays to pass through.
Data Source
AI summary
An optical imaging lens may include 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 and a ninth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements, the optical imaging lens may increase resolution, increase aperture stop and image height, and maintain well image quality.