Six-Lens Camera Optical Lens Aberration Correction

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Solution Overview

Problem

Current camera optical lenses for handheld devices face challenges in achieving excellent optical performance while meeting requirements for large aperture, wide angle, and ultra-thin designs, particularly due to unreasonable focal power, lens spacing, and shape in multi-piece lens structures.

Innovation Solution

A camera optical lens design comprising six lenses with specific refractive powers and curvature radii, optimized by satisfying certain conditions for on-axis and off-axis thicknesses, curvature ratios, and focal lengths, which allows for effective aberration correction and miniaturization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a multi-piece lens structure (five-piece, six-piece, or seven-piece) is adopted to improve imaging quality, then optical performance is improved, but device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improveimaging qualityVSAvoidlens structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by optimizing the focal lengths, curvature radii, and thicknesses of each lens element to satisfy specific mathematical relationships. This allows the six-piece lens structure to achieve excellent optical performance while maintaining reasonable complexity through precise parameter control rather than simply increasing the number of elements.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent segments the optical system into six distinct lens elements with specific refractive powers (positive or negative) arranged in a predetermined sequence. Each lens element is designed with specific curvature radii and thickness parameters that work together to correct various optical aberrations, achieving high imaging quality through systematic segmentation.

Inventive Principle:

Principle #1Segmentation

2Reliability

If lens elements are increased to six or more pieces to meet imaging quality requirements, then optical performance improves, but the lens becomes thicker and harder to miniaturize

Engineering Contradiction:

Improveimaging qualityVSAvoidlens thickness

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The patent uses parameter changes to control the thickness of each lens element and the spacing between them. By satisfying specific mathematical relationships among these parameters, the design achieves excellent imaging quality while keeping the total optical length minimized, enabling ultra-thin lens modules suitable for mobile devices.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs aspherical surfaces on the lens elements, defined by specific curvature radii and aspherical coefficients. This allows for better control of light paths and aberration correction with reduced thickness compared to traditional spherical surfaces, enabling miniaturization while maintaining optical performance.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Ease of manufacture

If traditional three-piece or four-piece lens structures are used, then manufacturing is simpler, but they cannot meet the requirements for large aperture, wide angle, and ultra-thin design with good optical performance

Engineering Contradiction:

Improvelens manufacturing simplicityVSAvoiddesign flexibility for large aperture, wide angle, ultra-thin

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by establishing specific mathematical relationships among the focal lengths, curvature radii, and thicknesses of the six lens elements. This systematic parameter optimization enables the lens to achieve large aperture, wide angle of view, and ultra-thin profile while maintaining excellent optical performance that cannot be achieved with traditional three-piece or four-piece structures.

Inventive Principle:

Principle #35Parameter changes

4Length of moving object

If the pixel size of photosensitive devices is reduced to enable smaller devices, then device dimensions decrease, but imaging quality becomes harder to maintain

Engineering Contradiction:

Improvedevice dimensionsVSAvoidimaging quality

Core Design Contradiction:

Length of moving objectVSReliability

Solution Approach 1:

The patent uses parameter changes to optimize the optical system for small format sensors with reduced pixel sizes. By carefully controlling the focal lengths, aperture, and spacing of the six lens elements, the design maintains excellent imaging quality and resolution even when adapted to smaller photosensitive devices, enabling miniaturization without sacrificing optical performance.

Inventive Principle:

Principle #35Parameter changes

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 excellent optical performance, a large aperture, a wide angle, and ultra-thin dimensions, making it suitable for high-resolution CCD and CMOS imaging applications in mobile devices.