Seven-Lens Camera Optical Lens for Wide-Angle Ultra-Thin Design

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Solution Overview

Problem

There is a need for a camera optical lens that offers excellent optical performance, large aperture, ultra-thinness, and wide-angle capabilities, particularly for handheld devices like smartphones and web cameras, with the challenge of miniaturization and increasing pixel density requiring advanced aberration correction.

Innovation Solution

A seven-lens camera optical lens design with specific refractive power distributions and curvature radii for each lens, along with precise thickness and Abbe number specifications, ensuring optimal imaging quality and chromatic aberration correction, while maintaining a compact form factor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a multi-piece lens structure is adopted to improve imaging quality, then optical performance is improved, but device complexity increases

Engineering Contradiction:

Improveimaging qualityVSAvoidlens structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The optical lens system is divided into seven separate lens elements with specific refractive powers (positive, negative, and mixed) arranged in sequence from object side to image side. Each lens element contributes to correcting specific aberrations, with the first lens having positive refractive power, followed by negative power lenses, and alternating thereafter to achieve comprehensive aberration correction while maintaining modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different lens elements utilize materials with varying Abbe numbers and refractive indices to correct chromatic and spherical aberrations. The patent specifies Abbe number ranges for different lenses (e.g., first lens Abbe number between 58.00-82.00) to optimize material selection for achieving superior imaging quality through composite optical material properties

Inventive Principle:

Principle #40Composite materials

2Productivity

If pixel area of photosensitive device is shrunk to increase pixel density, then device integration is improved, but optical performance deteriorates

Engineering Contradiction:

Improvepixel densityVSAvoidoptical performance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent optimizes critical parameters including total optical length (TTL), focal lengths of individual lenses (f1, f2, f3, f4, f5, f6, f7), and their ratios (e.g., f1/f between 0.78-1.25) to maintain superior optical performance despite smaller sensor sizes. These parameter adjustments ensure high-resolution imaging capability is preserved for high-pixel-density applications

Inventive Principle:

Principle #35Parameter changes

3Length of moving object

If lens thickness is reduced to achieve ultra-thin design, then device portability is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvelens thicknessVSAvoidthickness precision

Core Design Contradiction:

Length of moving objectVSManufacturing precision

Solution Approach 1:

The patent achieves ultra-thin profile by optimizing each lens element's thickness (d1, d3, d5, d7, d9, d11, d13) as a ratio of total optical length, with specific ranges specified (e.g., d1/TTL between 0.06-0.22). This systematic thinning approach maintains structural integrity while minimizing overall lens assembly thickness for portable devices

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent defines precise parameter ranges for lens thickness ratios (e.g., d7/TTL≤0.10, d1/ET1 between 3.00-5.00) to balance ultra-thin design requirements with manufacturability. These parameter specifications provide clear manufacturing guidelines while achieving the ultra-thin form factor needed for modern portable electronics

Inventive Principle:

Principle #35Parameter changes

4Reliability

If aperture is enlarged to improve light gathering capability, then imaging quality is improved, but device size increases

Engineering Contradiction:

Improvelight gathering capabilityVSAvoidlens assembly size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The patent utilizes aspheric surfaces on lens elements to enhance light gathering capability while controlling aberrations. The aspheric design allows for larger effective aperture without proportionally increasing lens diameter, maintaining compact size while improving light collection efficiency for better imaging performance in low-light conditions

Inventive Principle:

Principle #14Spheroidality (Curvature)

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 provides a camera optical lens with excellent optical characteristics, achieving large aperture, wide-angle, and ultra-thin designs, effectively addressing the challenges of miniaturization and aberration correction, making it suitable for high-pixel camera components like CCD and CMOS.