Five-element optical imaging lens for mobile devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to develop an optical imaging lens for mobile devices that is compact in size while maintaining good optical characteristics, as reducing the size of existing lenses often compromises their performance.
Innovation Solution
The optical imaging lens is designed with five lens elements, featuring controlled convex and concave surface shapes and air gaps, which allows for a shorter length while preserving optical quality by satisfying specific inequalities related to the lens elements' thickness and air gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the size of the optical imaging lens is reduced to meet smaller mobile device requirements, then the length and volume of the lens are decreased, but the optical characteristics deteriorate
Solution Approach 1:
The optical imaging lens is divided into five separate lens elements (first, second, third, fourth, and fifth lens elements) with specific convex and concave surface configurations. Each lens element has controlled thickness and surface curvature to collectively achieve compact overall length while maintaining optical performance through distributed optical power and aberration correction across multiple segments.
Solution Approach 2:
Different regions of the lens elements have different surface curvatures and thicknesses. Specifically, the first lens element has a convex object-side surface and concave image-side surface, the second has convex surfaces on both sides, the third has concave object-side and convex image-side surfaces, the fourth has convex object-side and concave image-side surfaces, and the fifth has convex surfaces on both sides. This local variation in surface quality enables compact design while correcting optical aberrations.
2Reliability
If five lens elements are used to maintain optical quality, then the optical characteristics are improved, but the device complexity increases
Solution Approach 1:
Multiple lens elements with different surface configurations are combined in a single optical imaging lens assembly. The first through fifth lens elements are integrated together with an aperture stop positioned before the first lens element, forming a unified compact optical system that achieves superior optical characteristics while maintaining a shortened overall length suitable for mobile devices.
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 optical imaging lens while maintaining excellent optical characteristics, such as reduced aberrations and improved imaging quality, suitable for smaller mobile devices.
Implementation Method 1
an optical imaging lens, which includes, sequentially from an object side to an image side along an optical axis, an aperture stop, and first, second, third, fourth and fifth lens elements, each of the first, second, third, fourth and fifth lens elements having refracting index
Data Source
AI summary
Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens may comprise an aperture stop and five lens elements positioned sequentially from an object side to an image side. By controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least one inequality, the optical imaging lens may exhibit better optical characteristics and the total length of the optical imaging lens may be shortened.