Array Lens System Miniaturization via Segmented Optical Groups
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Solution Overview
Problem
There is a need for a miniaturized imaging optical device with high image quality, low volume, and light weight to accommodate scaled-down image sensors in mobile devices, which existing wafer-level optics technologies have not adequately addressed.
Innovation Solution
An array lens system comprising a series of optical components including reflection surfaces, positive and negative-powered lens groups, and specific lens configurations to achieve high image quality and compact size, fabricated using wafer-level optics techniques with materials like glass or plastic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If wafer level optics techniques are used to miniaturize the lens module, then the volume and weight are reduced, but the image quality deteriorates
Solution Approach 1:
The lens module is divided into multiple lens groups (first positive-powered lens group, second positive-powered lens group, negative-powered lens group) with distinct functions. Each group is optimized independently for miniaturization while contributing to overall image quality, allowing the system to achieve compact size without sacrificing optical performance
Solution Approach 2:
The patent employs composite optical structures combining multiple lens materials with different refractive indices and optical properties. This allows each lens group to be optimized for specific functions (focusing, field of view, distortion correction) while maintaining compact dimensions and high image quality simultaneously
2Volume of moving object
If the image sensor size is scaled down, then the device size is reduced, but the resolution requirement becomes more difficult to achieve
Solution Approach 1:
Different regions of the optical system are optimized with different properties: the first positive-powered lens group handles central field focusing, the second positive-powered lens group addresses peripheral field curvature, and the negative-powered lens group corrects distortion. This localized optimization ensures high resolution across the entire small sensor surface
Solution Approach 2:
The patent optimizes specific optical parameters including focal lengths, curvature radii, and spacing between lens groups to match the scaled-down sensor dimensions. By carefully adjusting these parameters, the system maintains high resolution capability despite the reduced sensor size
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 array lens system achieves high image quality with low volume and light weight, suitable for mobile devices, by optimizing the arrangement and materials of lens groups and reflection surfaces, enhancing the performance of miniaturized optics.
Implementation Method 1
a first optical device with a first reflection surface, a positive-powered first lens group, a positive-powered second lens group, a negative-powered third lens group, a second optical device with a second reflection surface
Data Source
AI summary
An array lens system composed of a plurality of array lenses, each includes a first optical device with a first reflection surface, a positive-powered first lens group, a positive-powered second lens group, a negative-powered third lens group, a second optical device with a second reflection surface, and a negative-powered fourth lens group arranged in an order from an object side to an image side.