Six-Lens Camera Module with Refractive Power Distribution

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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, adhering to conditions that optimize the focal lengths and curvature radii of each lens to achieve a narrow angle of view (≤50°) and small size with excellent optical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the camera lens uses a six-piece configuration with conventional refractive power distribution and lens shapes, then the lens can be manufactured with standard designs, but the angle of view becomes wide (greater than 50°) and the optical performance is suboptimal

Engineering Contradiction:

Improvestandard lens designVSAvoidoptical performance

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by precisely controlling the refractive power distribution (f1/f ratios for each lens) and curvature radii (R values) of the six lenses. Specific numerical ranges are defined for each parameter to achieve the narrow angle of view (≤50°) while maintaining manufacturability. This resolves the contradiction by showing that standardized manufacturing processes can produce lenses with precisely controlled optical parameters.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies local quality by giving each of the six lenses specific refractive power characteristics and shape parameters tailored to its position in the optical system. Each lens has customized curvature radii (R1, R2, R3, R4, etc.) and thickness (d1, d2, d3, etc.) that are optimized for its local function in correcting specific aberrations and achieving the overall narrow angle of view.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If the first lens has insufficient refractive power, then the lens assembly is easier to manufacture, but the angle of view becomes wide and optical performance deteriorates

Engineering Contradiction:

Improvelens fabricationVSAvoidoptical performance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent defines specific parameter ranges for the first lens including curvature radii (R1, R2) and thickness (d1) that optimize its refractive power contribution. The ratio f1/f is constrained to specific ranges to ensure the first lens provides adequate refractive power for narrow angle of view while remaining manufacturable with standard processes.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If the fourth lens has improper shape, then the manufacturing process is simplified, but the angle of view increases and optical properties are compromised

Engineering Contradiction:

Improvelens shapingVSAvoidangle of view control

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent specifies precise curvature radius parameters (R7, R8) and thickness (d7) for the fourth lens that define its optimal shape. These parameters are constrained to specific numerical ranges to achieve the desired narrow angle of view (≤50°) while being compatible with standard lens manufacturing and shaping processes.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The fourth lens is given specific local geometric characteristics through its curvature radii and thickness parameters that are optimized for its position in the optical system. This localized optimization of the fourth lens shape contributes to the overall narrow angle of view and optical performance.

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 design enables the production of small-sized, narrow-angle camera lenses with improved optical performance, effectively correcting aberrations and enhancing image quality.