Six-Lens Camera Module with Refractive Power Constraints

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Solution Overview

Problem

Existing camera lenses with six-piece configurations for mobile and web camera modules suffer from insufficient refractive power distribution and improper lens shapes, leading to wide angles and suboptimal optical performance.

Innovation Solution

A camera lens design comprising six lenses with specific refractive power distributions and aspheric shapes, optimized by constraints such as 0.35≤f1/f≤0.50 and 0.15≤d10/f≤0.25, along with negative and positive refractive powers for each lens, to achieve a narrow angle of view (≤50°) and small size with excellent optical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the refractive power distribution of the first lens is increased, then the optical performance is improved, but the manufacturing precision becomes more difficult to control

Engineering Contradiction:

Improveoptical performanceVSAvoidlens shape control

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by establishing specific mathematical relationships between lens parameters (f1/f ratio between 0.35-0.50, d10/f ratio between 0.15-0.25, and curvature radius ratios). These parameter constraints optimize the refractive power distribution to improve optical performance while maintaining manufacturability through quantified design guidelines.

Inventive Principle:

Principle #35Parameter changes

2Volume of moving object

If the lens size is reduced, then the miniaturization is achieved, but the angle of view becomes wider

Engineering Contradiction:

Improvelens sizeVSAvoidangle of view

Core Design Contradiction:

Volume of moving objectVSShape

Solution Approach 1:

The patent applies local quality by assigning different functional characteristics to different lens components. The first lens is designed with positive refractive power and specific curvature ratios to control the angle of view, while subsequent lenses have negative refractive powers to correct aberrations. This differentiated local optimization allows miniaturization while maintaining narrow angle of view (≤50°).

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses parameter changes by establishing specific ratio constraints (f1/f between 0.35-0.50, d10/f between 0.15-0.25) that coordinate the optical parameters across all lenses. These parameter relationships enable the system to achieve miniaturization while controlling the angle of view through optimized refractive power distribution.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the refractive power of the fourth lens is increased, then the optical performance is improved, but the manufacturing complexity increases

Engineering Contradiction:

Improveoptical performanceVSAvoidlens configuration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by establishing specific mathematical relationships for the fourth lens parameters (curvature radius ratios and refractive power relative to focal length). These quantified constraints optimize the refractive power distribution to improve optical performance while maintaining reasonable manufacturing complexity through standardized parameter relationships.

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 results in a small-sized, narrow-angle camera lens with improved optical performance, effectively correcting aberrations and maintaining a total angle of view of 2ω≤50°, enhancing the development of miniaturized high-performance camera lenses.