Six-Lens Optical Module with Alternating Refractive Powers

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Solution Overview

Problem

Traditional optical image capturing systems in portable electronic devices struggle to meet the demands for high image quality and increased light intake due to higher pixel density and advanced semiconductor manufacturing, requiring a higher order camera lens module.

Innovation Solution

The implementation of a compact optical image capturing system using a combination of six-piece optical lenses with refractive power, convex and concave surfaces, and a reflective element to adjust the angle of incidence and correct optical distortions, optimizing lens parameters such as focal lengths, entrance pupil diameter, and arc lengths to enhance light intake and image quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If traditional four-lens or five-lens designs are used, then the device structure is simple, but the light intake is insufficient and image quality cannot meet high pixel density requirements

Engineering Contradiction:

Improvelight intakeVSAvoidlens module complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The optical system is divided into six independent lens elements with alternating positive and negative refractive powers. Each lens element can be independently optimized for specific functions such as light gathering, aberration correction, and focal length control, allowing the system to achieve high light intake while maintaining manageable complexity through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The six-lens configuration serves multiple functions simultaneously: the first lens (negative power) provides wide light acceptance, the second lens (positive power) contributes to focusing and compactness, the third lens (negative power) corrects aberrations, the fourth lens (positive power) enhances light gathering, the fifth lens (negative power) refines aberration correction, and the sixth lens (positive power) completes the focusing function. This multi-functional design achieves high light intake and image quality without requiring additional separate components

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Manufacturing precision

If more lens elements are added to increase light intake, then image quality improves, but the system becomes more complex and larger

Engineering Contradiction:

Improveimage qualityVSAvoidlens module complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent employs systematic variation of key optical parameters across the six lens elements, including refractive power alternation (negative-positive-negative-positive-negative-positive), varying focal lengths (f1, f2, f3, f4, f5, f6), different curvature radii for object and image sides of each lens, and controlled thickness variations. These parameter changes enable each lens element to contribute differently to image quality while maintaining overall system compactness and managing complexity through predictable parameter progression

Inventive Principle:

Principle #35Parameter changes

3Length of stationary object

If lens parameters are optimized for compactness, then the device size is reduced, but light intake and image quality may be compromised

Engineering Contradiction:

Improvesystem heightVSAvoidlight intake

Core Design Contradiction:

Length of stationary objectVSIllumination intensity

Solution Approach 1:

The six lens elements are arranged in a compact nested configuration where each lens element is positioned closely to its neighbors along the optical axis. The alternating positive and negative refractive powers create a folded optical path that achieves long effective focal length in a short physical distance, allowing the system to maintain compact height while preserving light gathering capability through efficient spatial utilization

Inventive Principle:

Principle #7Nested doll (Nesting)

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

This configuration effectively increases light intake and improves image quality, enabling better performance in micro filming and night viewing while maintaining a compact form factor suitable for portable electronic devices.

Implementation Method 1

an optical image capturing system includes, from an object side to an image side, a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power, and a sixth lens with refractive power

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS11550130B2Optical image capturing module including six lenses of −+−++−, −+++−+, −++++−, −+++−− or +−+−++ refractive powers

Publication Date: 2023.01.10 ABILITY OPTO ELECTRONICS TECH

AI summary

A six-piece optical lens for capturing image and a six-piece optical module for capturing image are disclosed. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power; and at least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.