Seven Element Optical Imaging Lens Compact Design
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Solution Overview
Problem
The challenge is to design an optical imaging lens with seven elements that is compact enough to fit in modern mobile devices while maintaining good imaging quality and a large field of view, as existing lenses are too long and do not accommodate the dimensions of today's cell phones or digital cameras effectively.
Innovation Solution
The optical imaging lens is designed by optimizing the convex and concave surfaces of the seven lens elements, with specific parameters such as central thickness and air gaps, to reduce the overall length while maintaining optical characteristics, satisfying certain inequalities to ensure imaging quality and field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of lens elements is increased to improve imaging quality, then the imaging quality is improved, but the overall length of the lens increases
Solution Approach 1:
The patent applies nesting by placing multiple lens elements (seven elements total) in a compact stacked arrangement where each lens element is positioned close to the others, reducing the overall axial length. The lens elements are nested within a confined space along the optical axis, allowing high imaging quality to be achieved without proportionally increasing the lens length.
Solution Approach 2:
The patent controls the axial distribution of lens elements by precisely managing the air gaps between adjacent elements. By optimizing the thickness and positioning of each lens element along the optical axis, the design achieves compact length while maintaining the necessary optical path for high-quality imaging.
2Length of moving object
If the overall length of the lens is reduced to accommodate mobile device dimensions, then the device size is reduced, but the field of view decreases
Solution Approach 1:
The patent achieves a compact lens length while maintaining a large field of view by optimizing key parameters including the focal length of each lens element, the air gaps between elements, and the refractive indices of the lens materials. These parameter changes allow the lens to achieve both compact size and wide field of view simultaneously.
Solution Approach 2:
The patent uses lens elements with different refractive indices and dispersion characteristics to achieve compact dimensions while maintaining optical performance. By combining materials with different optical properties, the design achieves both size reduction and field of view enhancement through corrected optical aberrations.
3Length of moving object
If the overall length of the lens is reduced to accommodate mobile device dimensions, then the device size is reduced, but the imaging quality deteriorates
Solution Approach 1:
The patent applies local quality by assigning specific optical characteristics to different lens elements positioned at different locations along the optical axis. Each lens element is designed with specific refractive power, curvature, and material properties tailored to its position, allowing the compact lens to maintain high imaging quality through localized optimization of each element's contribution to the overall optical performance.
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 solution results in a shortened optical imaging lens that maintains good imaging quality and a larger field of view, accommodating the dimensions of modern mobile devices while meeting the required optical performance standards.
Implementation Method 1
Each of the first, second, third, fourth, fifth, sixth and seventh lens elements have varying refracting power
Data Source
AI summary
Present embodiments provide for an optical imaging lens. The optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and seven lens element positioned in an order from an object side to an image side. Through the arrangement of convex or concave surfaces of the seven lens elements, the length of the optical imaging lens may be shortened while providing better optical characteristics and imaging quality.