Eight-Lens Zoom Optics for Thin High-Magnification Imaging

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Solution Overview

Problem

Existing zoom lenses face challenges in achieving thinness, high zoom magnification, and high imaging quality due to the need for multiple lenses, which complicates reducing their volume.

Innovation Solution

A novel optical lens design comprising eight lenses with specific refractive powers and configurations, including positive and negative refractive powers, maintains constant lens length during zooming, and employs aspheric lenses to achieve thinness and high zoom magnification while maintaining low distortion and high imaging quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the number of lenses is increased to achieve high zoom magnification and high imaging quality, then the imaging quality and zoom magnification are improved, but the volume and complexity of the zoom lens increase

Engineering Contradiction:

Improveimaging qualityVSAvoidnumber of lenses

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The zoom lens is divided into four lens groups with specific positive and negative refractive powers arranged in sequence. This segmentation allows each group to perform specific optical functions, achieving high imaging quality while controlling the overall number of lens elements through strategic grouping and configuration.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs aspheric lens surfaces with specific curvature radii and aspheric coefficients to change the optical parameters. By optimizing the refractive powers, curvature radii, and aspheric coefficients of individual lenses, the system achieves high zoom magnification and imaging quality without requiring an excessive number of lens elements.

Inventive Principle:

Principle #35Parameter changes

2Volume of moving object

If the number of lenses is reduced to decrease the volume of the zoom lens, then the volume is reduced, but it becomes impossible to achieve the performance requirements of high zoom magnification and high imaging quality

Engineering Contradiction:

Improvevolume of zoom lensVSAvoidimaging quality

Core Design Contradiction:

Volume of moving objectVSManufacturing precision

Solution Approach 1:

The patent uses aspheric lens surfaces with optimized curvature radii and aspheric coefficients to enhance the optical performance of each lens element. By changing the surface parameters and refractive powers, the system achieves high imaging quality and zoom magnification with a reduced number of lenses, thereby decreasing the overall volume.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The zoom lens combines lenses with different refractive powers (positive and negative) and uses aspheric surfaces to create a composite optical system. This composite structure allows fewer lens elements to work together more efficiently, achieving high performance while reducing volume.

Inventive Principle:

Principle #40Composite materials

3Adaptability or versatility

If multiple lenses are used to achieve high zoom magnification, then the zoom magnification is improved, but the lens length and thickness increase

Engineering Contradiction:

Improvezoom magnificationVSAvoidlens length

Core Design Contradiction:

Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The patent optimizes the curvature radii, aspheric coefficients, and refractive powers of the lens groups to achieve high zoom magnification within a compact form factor. By carefully controlling the optical parameters, the system maintains high adaptability for zooming while keeping the lens length manageable.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The four lens groups are arranged in a nested configuration along the optical axis, with each group positioned to work in conjunction with the others. This nested arrangement allows the lens system to achieve high zoom magnification while minimizing the overall lens length 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

The optical lens design achieves thinness, high zoom magnification, and low distortion with high imaging quality, suitable for various devices including image projection and capture systems.

Implementation Method 1

The optical lens, in order from an object side to an image-forming side, includes a first lens having positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having negative refractive power, a seventh lens having negative refractive power and an eighth lens having refractive power

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS12541082B2Optical lens and electronic apparatus

Publication Date: 2026.02.03 ABILITY ENTERPRISE CO LTD

AI summary

An optical lens, in order from an object side to an image-forming side, includes: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having negative refractive power, a seventh lens having negative refractive power and an eighth lens having refractive power.