Seven-Lens Camera Optical Lens Aberration Correction

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Solution Overview

Problem

The demand for miniature camera optical lenses with high imaging quality and ultra-thin, wide-angle capabilities has increased, particularly for handheld devices, but existing lenses struggle to achieve optimal optical performance with corrected aberrations and large apertures.

Innovation Solution

A camera optical lens design comprising seven lenses, with specific refractive powers and Abbe number ratios, is proposed, ensuring 2.80≤v1/v2≤4.50 and −10.00≤f3/f≤−3.00, along with precise curvature radii and thickness conditions, to correct aberrations and achieve ultra-thin, wide-angle performance with a large aperture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a three-piece or four-piece lens structure is used, then the lens can be simpler and easier to manufacture, but the imaging quality and aberration correction are insufficient

Engineering Contradiction:

Improveimaging qualityVSAvoidlens structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The lens system is divided into seven distinct lens elements with specific refractive powers and Abbe numbers. Each lens element is optimized for specific aberration correction, with the first lens having positive refractive power, the second and third having negative refractive power, and so on. This segmentation allows comprehensive correction of various optical aberrations while maintaining a manageable structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent specifies different Abbe numbers for different lens elements (v1 for the first lens, v2 for the second lens, etc.) with a specific ratio constraint 2.80 ≤ v1/v2 ≤ 4.50. This use of composite materials with different optical properties enables sophisticated aberration correction while achieving high imaging quality.

Inventive Principle:

Principle #40Composite materials

2Length of moving object

If the lens is made ultra-thin and wide-angle, then it suits handheld devices better, but the aperture and optical performance suffer

Engineering Contradiction:

Improvelens thicknessVSAvoidoptical performance

Core Design Contradiction:

Length of moving objectVSManufacturing precision

Solution Approach 1:

The lens design incorporates specific curvature radius constraints and thickness ratios that allow the optical system to dynamically balance between being ultra-thin and maintaining large aperture capability. The conditional expressions constrain the relative proportions to achieve optimal performance in the ultra-thin form factor.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent specifies precise parameter ranges including the Abbe number ratio 2.80 ≤ v1/v2 ≤ 4.50 and focal length ratio −10.00 ≤ f3/f ≤ −3.00, along with curvature radius and thickness constraints. These parameter changes enable the lens to achieve ultra-thin dimensions while maintaining large aperture and excellent optical performance.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If more lens elements are added (five-piece, six-piece, or seven-piece structure), then the imaging quality and aberration correction improve, but the lens becomes thicker and more complex

Engineering Contradiction:

Improveaberration correctionVSAvoidlens thickness

Core Design Contradiction:

Manufacturing precisionVSLength of moving object

Solution Approach 1:

Each lens element is assigned specific local properties including refractive power signs (positive for first, sixth lenses; negative for second, third, seventh lenses) and specific Abbe numbers. This local quality optimization allows each element to contribute specifically to aberration correction while minimizing overall thickness through efficient use of space.

Inventive Principle:

Principle #3Local quality

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 solution results in a camera optical lens with excellent optical characteristics, suitable for high-pixel camera assemblies in mobile phones and webcams, providing improved imaging quality and reduced aberrations while maintaining an ultra-thin and wide-angle design.