Eight-Lens Imaging System for Compact High-Resolution Modules
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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.
Innovation Solution
An imaging lens system comprising a specific configuration of lenses with defined relationships between focal lengths, distances, and refractive powers, allowing for a compact design that meets high-resolution 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 camera module size increases making it difficult to mount in thinned electronic devices
Solution Approach 1:
The lens system is divided into multiple lens groups (first through eighth lenses) with different refractive powers and functions. This segmentation allows each lens to be optimized for specific optical tasks, achieving high imaging resolution while maintaining a compact overall structure suitable for thinned electronic devices.
Solution Approach 2:
The patent employs a complex multi-lens configuration that manipulates light paths in multiple dimensions through varying curvature radii and positions. This dimensional approach to light control enables high resolution imaging within a reduced axial length, solving the contradiction between resolution and module size.
2Reliability
If more lenses are added to improve imaging performance, then the optical quality is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent systematically varies critical parameters including curvature radii (r1 through r36), thicknesses (d1 through d22), and refractive indices (n1 through n8) across eight lenses to optimize imaging performance. These parameter changes enable high reliability imaging while managing complexity through precise mathematical relationships rather than structural complexity.
Solution Approach 2:
The lens system uses lenses with different refractive indices and Abbe numbers (e.g., first lens with n1=1.546, V1=56.0; second lens with n2=1.644, V2=23.5) to correct chromatic and spherical aberrations. This composite approach combining different optical materials achieves superior imaging performance while maintaining manageable system complexity.
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
Enables the integration of high-resolution imaging capabilities in portable devices by maintaining a compact form factor while optimizing lens system dimensions and performance.
Implementation Method 1
an imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens sequentially disposed from an object-side
Data Source
AI summary
An imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens sequentially disposed from an object-side, wherein 0.15<BFL/TTL and 1.9 mm<BFL<2.8 mm are satisfied, where BFL is a distance from an image-side surface of the eighth lens to an imaging plane and TTL is a distance from an object-side surface of the first lens to the imaging plane