Eight-Lens Imaging Layout for Thin High-Resolution Cameras
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Solution Overview
Problem
The challenge of integrating high-resolution camera modules and imaging lens systems into thin portable electronic devices, such as smartphones, due to the proportional increase in size with sensor and imaging plane dimensions, is addressed.
Innovation Solution
An imaging lens system comprising a specific arrangement of lenses with concave and convex surfaces, refractive powers, and focal length relationships, allowing for a compact design that meets high-resolution imaging requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor and imaging plane size are increased to achieve high resolution, then the imaging quality is improved, but the overall device size increases making it difficult to mount in thin electronic devices
Solution Approach 1:
The imaging lens system is divided into eight individual lens elements (first lens through eighth lens) with specific arrangements of convex and concave surfaces. This segmentation allows each lens to contribute to the overall optical power while distributing the complexity across multiple manageable components, enabling high resolution without requiring a single large element that would increase device thickness
Solution Approach 2:
The patent employs a multi-dimensional lens arrangement where lenses are positioned at different distances from the imaging plane (with specific TTL/2ImgHT ratios) and feature varying surface curvatures. This spatial distribution in multiple dimensions allows the system to achieve high imaging resolution while maintaining a compact overall footprint suitable for thin devices
2Measurement precision
If more lens elements are added to achieve high resolution, then the imaging performance is improved, but the device complexity and size increase
Solution Approach 1:
Each of the eight lens elements has specifically designed local optical properties including varying refractive powers (positive or negative), different surface curvature radii, and specific thickness values. This local optimization of each lens element's quality allows the entire system to achieve high resolution while keeping individual components relatively simple and manageable
Solution Approach 2:
The patent specifies precise parameter ranges for each lens element including curvature radii (e.g., R1, R2, R3, R4 with specific relationships), thickness values (e.g., d1, d2, d3), and refractive power distributions. By carefully controlling and optimizing these parameters, the system achieves high imaging resolution while maintaining manageable complexity through standardized design rules
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 compact lens system enables high-resolution imaging within the limited space of portable devices while maintaining optical performance.
Implementation Method 1
an imaging lens system includes a first lens, a second lens, a third lens, a fourth lens having a concave image side surface, a fifth lens having a concave object side surface, a sixth lens, a seventh lens, and an eighth lens, sequentially arranged from an object side to an imaging side
Data Source
AI summary
An imaging lens system is provided. The imaging lens system includes a first lens having refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having refractive power and a concave image side surface, a fifth lens having refractive power and a concave object side surface, a sixth lens having refractive power, a seventh lens having refractive power, and an eighth lens having refractive power. The first to eighth lenses of the imaging system are sequentially arranged from an object side to an imaging side, and, in the imaging lens system, TTL/2 ImgHT<0.6, where TTL is a distance from an object side surface of the first lens to an imaging plane, and 2 ImgHT is a diagonal length of the imaging plane.