Six-Lens Camera Module with Aspheric Inflection Points for Miniaturization

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional camera lenses with high resolution and large field angles face challenges in miniaturization due to their long dimensions, leading to insufficient resolution power and significant distortion.

Innovation Solution

A camera lens configuration comprising six lenses with specific refractive powers and surface shapes, including convex and concave surfaces with points of inflection, optimized to satisfy specific focal length and distance relations, ensuring high resolution and large field angle while minimizing size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a camera lens is designed with large aperture and long dimension to achieve high resolution and large field angle, then the illumination requirements are satisfied and field angle is improved, but the lens size increases and becomes difficult to match with high resolution photosensitive chips

Engineering Contradiction:

Improvefield angleVSAvoidlens dimension

Core Design Contradiction:

Volume of moving objectVSLength of moving object

Solution Approach 1:

The camera lens is divided into six individual lens elements (first lens through sixth lens) with alternating positive and negative refractive powers. Each lens element contributes to the overall optical function, allowing the system to achieve large field angle and high resolution while maintaining a compact total length through distributed optical power management.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs aspheric surfaces with points of inflection on multiple lens elements (third lens, fourth lens, fifth lens, and sixth lens), transitioning from traditional spherical to aspheric geometry. This dimensional change in surface shape enables better control of light rays across the field, achieving large field angle and high resolution without proportionally increasing lens length.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Measurement precision

If a camera lens is designed with long dimension to achieve high resolution, then the resolution power is improved, but the lens becomes difficult to miniaturize

Engineering Contradiction:

Improveresolution powerVSAvoidlens dimension

Core Design Contradiction:

Measurement precisionVSLength of moving object

Solution Approach 1:

The optical system is segmented into six lens elements with alternating positive and negative refractive powers. This segmentation allows each element to contribute to resolution while sharing the optical burden, achieving high resolution power without requiring a single long lens structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent utilizes aspheric surfaces with points of inflection on multiple lens elements, changing the geometric parameters from spherical to aspheric. This parameter change enables more efficient light path control, achieving high resolution with a shorter overall lens dimension suitable for miniaturization.

Inventive Principle:

Principle #35Parameter changes

3Illumination intensity

If a camera lens is designed with large relative aperture to satisfy illumination requirements, then the illumination is improved, but the distortion increases

Engineering Contradiction:

ImproveilluminationVSAvoiddistortion

Core Design Contradiction:

Illumination intensityVSShape

Solution Approach 1:

The lens system is divided into six elements with alternating positive and negative refractive powers, allowing distributed correction of distortion while maintaining large relative aperture for sufficient illumination. Each lens element contributes to both illumination and distortion control.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs aspheric surfaces with points of inflection that intentionally introduce controlled surface complexity to counteract distortion. The aspheric profiles with inflection points convert potential manufacturing complexity into a benefit by enabling distortion correction while maintaining large aperture for good illumination.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 configuration achieves high resolution, improved field angle, and miniaturization, effectively addressing the challenges of lens length and distortion, making it suitable for portable electronic devices.

Implementation Method 1

a first lens having a positive refractive power, in which an object-side surface of the first lens is a convex surface

Methodology Applied