Six-Lens Camera Optical Lens Aberration Correction
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Solution Overview
Problem
There is a need for ultra-thin, wide-angle camera lenses with good optical characteristics and fully corrected chromatic aberration for handheld terminal devices, as existing miniature camera lenses face challenges in achieving high imaging quality due to smaller pixel sizes and increasing demands for better imaging performance.
Innovation Solution
A six-lens camera optical lens design is proposed, where each lens is made of plastic material, with specific refractive power and curvature radius ratios optimized to achieve ultra-thin and wide-angle capabilities, including a six-lens structure with a focal length ratio and curvature radius conditions that facilitate aberration correction and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a three-piece or four-piece lens structure is used, then the device complexity is reduced, but the imaging quality deteriorates due to insufficient aberration correction
Solution Approach 1:
The lens system is divided into six distinct lens elements (first through sixth lenses) with specific refractive power distributions and curvature configurations. This segmentation allows each lens to contribute to correcting specific types of aberrations, achieving superior imaging quality that cannot be obtained with fewer elements while maintaining manageable structural complexity through systematic design
2Length of stationary object
If the total optical length is reduced for miniaturization, then the device dimensions are improved, but the chromatic aberration correction becomes more difficult
Solution Approach 1:
The patent employs precise control of optical parameters including refractive indices (nd1=1.5445, nd2=1.5445, nd3=1.6613, nd4=1.5352, nd5=1.6713, nd6=1.5352), Abbe numbers (νd1=55.99, νd2=55.99, νd3=20.37, νd4=56.09, νd5=19.24, νd6=56.09), and curvature radius ratios (R1/R2, R3/R4, R5/R6, R7/R8, R9/R10, R11/R12) within specific ranges. These parameter optimizations enable effective chromatic aberration correction despite the compact total optical length, resolving the contradiction between miniaturization and optical performance
3Adaptability or versatility
If the lens is designed for wide-angle capability, then the field of view is improved, but the distortion and field curvature increase
Solution Approach 1:
The lens system employs asymmetric curvature configurations where each lens element has different object-side and image-side curvature radii (R1≠R2, R3≠R4, R5≠R6, R7≠R8, R9≠R10, R11≠R12). This asymmetric design allows the lens to achieve wide-angle field of view while correcting distortion and field curvature through carefully balanced positive and negative refractive power distributions across the six lens elements
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 design achieves high-performance, ultra-thin camera lenses with fully corrected chromatic aberrations, maintaining miniaturization and improving imaging quality, with a total optical length as short as possible, suitable for handheld devices.
Implementation Method 1
The camera optical lens includes, from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each lens has specific refractive power and curvature radius ratios that control light propagation and focus.
Data Source
AI summary
The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 5.00≤f1/f≤8.50; and 10.00≤R3/d3≤15.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.