Nine-Element Optical Imaging Lens for Compact High-Resolution Imaging
Find Innovative SolutionsGenerate Solutions
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 refracting powers, including configurations that satisfy certain inequalities, such as Tavg789/Tstd789≥2.900, to enhance resolution and aperture stop while maintaining a slim and compact form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional optical imaging lens designs are used, then the structure is simple, but the resolution and aperture stop cannot be simultaneously improved while maintaining compact size
Solution Approach 1:
The optical imaging lens is divided into nine separate lens elements with different refractive powers and surface shapes, arranged in specific sequences. This segmentation allows each element to contribute differently to the overall optical performance, enabling high resolution and large aperture stop while maintaining a compact form factor that would be impossible with traditional simpler designs.
2Manufacturing precision
If the image height is increased to accommodate high pixel number, then the pixel number can be increased, but the device size and system length increase
Solution Approach 1:
The patent employs specific parameter relationships among the nine lens elements, including refractive indices, focal lengths, and thickness ratios (such as Tavg789/Tstd789≥2.900), to optimize the optical path. These parameter changes enable the system to achieve high pixel number accommodation through increased image height while simultaneously controlling the overall system length to maintain compact dimensions.
3Manufacturing precision
If the aperture stop is enlarged to improve light gathering, then the resolution can be improved, but the difficulty of design and manufacturing increases
Solution Approach 1:
Different lens elements are assigned specific local qualities including convex or concave object-side and image-side surfaces, and positive or negative refractive powers. For example, the first lens element has positive refractive power, while specific elements have convex or concave surfaces in their periphery or optical axis regions. This local differentiation allows the large aperture stop to be achieved while distributing the design complexity across multiple specialized elements rather than requiring one overly complex element.
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 image height with good imaging quality, facilitating efficient production of the lens elements.
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.