Six-Lens Camera Optical Lens Aberration Correction
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Solution Overview
Problem
Conventional camera optical lenses for portable devices face challenges in achieving good optical performance while meeting requirements for large aperture, ultra-thinning, and wide angle, due to unreasonable optical power, lens spacing, and lens shape settings.
Innovation Solution
A six-piece camera optical lens design with specific refractive power and curvature radius ratios for each lens element, optimized to achieve a focal length range and thickness ratios that correct aberrations and enable ultra-thinning and wide-angle capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional three-piece or four-piece lens structure is adopted, then manufacturing complexity is reduced, but optical performance deteriorates and cannot meet large aperture, ultra-thinning, and wide angle requirements
Solution Approach 1:
The patent divides the lens system into six distinct lens elements with alternating positive and negative refractive powers. This segmentation allows each element to be optimized for specific optical functions (correcting spherical aberration, coma, field curvature, etc.), achieving superior overall optical performance while meeting large aperture, wide angle, and ultra-thinning requirements that cannot be achieved with fewer elements
2Reliability
If six-piece lens structure is adopted, then optical performance is improved, but lens thickness and system length increase
Solution Approach 1:
The patent employs precise parameter optimization including specific focal length ratios (f3/f between 6.50-10.00), curvature radius relationships ((R3+R4)/(R3-R4) between 1.50-3.00), and thickness ratios (d1/d2 between 8.00-10.50, d8/d7 between 1.50-2.00). These parameter changes enable the six-piece lens to achieve excellent optical performance while maintaining ultra-thinning characteristics with total optical length controlled within acceptable limits for portable devices
3Reliability
If lens elements are increased in number, then aberration correction capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent assigns specific local functions to each lens element: the first lens (positive power) corrects spherical aberration, the second lens (negative power) corrects coma, the third lens (positive power) corrects field curvature, the fourth lens (negative power) corrects astigmatism, the fifth lens (positive power) corrects distortion, and the sixth lens (negative power) provides final aberration refinement. This localized quality assignment ensures each element contributes optimally to overall aberration correction while maintaining manageable manufacturing precision requirements
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 lens design achieves excellent optical characteristics, supporting large aperture and wide-angle imaging with ultra-thinning, suitable for mobile phone and web camera applications.
Implementation Method 1
a first lens L1 having positive refractive power, a second lens L2 having negative refractive power, a third lens L3 having positive refractive power, a fourth lens L4 having negative refractive power, a fifth lens L5 having positive refractive power and a sixth lens L6 having negative refractive power
Data Source
AI summary
A camera optical lens includes a first lens to a sixth lens. The camera optical lens satisfies: 6.50≤f3/f≤10.00; 1.50≤(R3+R4)/(R3−R4)≤3.00; 8.00≤d1/d2≤10.50; 1.50≤d8/d7≤2.00, where f denotes a focal length of the camera optical lens, f3 denotes a focal length of a third lens, R3 and R4 respectively denotes curvature radiuses of an object side surface and an image side surface of a second lens, d1 denotes an on-axis thickness of the first lens, d2 denotes an on-axis distance from an image side surface of the first lens to an object side surface of the second lens, d7 denotes an on-axis thickness of a fourth lens, and d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of a fifth lens. The camera optical lens has a good optical performance and meets the design requirements for a large aperture, a wide angle and ultra-thinning.