Multi-Group Imaging Lens Layout for Uniform Peripheral Resolution

Solution Overview

Problem

Imaging lens systems with high magnification performance suffer from significantly lower resolution in the peripheral portion of the imaging plane compared to the center portion.

Innovation Solution

The proposed imaging lens system includes specific conditional expressions and configurations, such as sequential arrangement of lens groups with negative refractive powers, aspherical glass lenses, and drivable lens groups, to improve peripheral resolution and minimize aberrations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If high magnification performance is implemented, then zoom capability is improved, but peripheral resolution deteriorates

Engineering Contradiction:

Improvezoom capabilityVSAvoidperipheral resolution

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The imaging lens system divides the optical system into multiple lens groups (first lens group with negative refractive power, second lens group with positive refractive power, third lens group with negative refractive power). Each lens group is optimized to contribute differently to the overall optical performance, with the first and third groups specifically addressing peripheral aberrations while the second group provides magnification, thereby resolving the contradiction between zoom capability and peripheral resolution.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs aspherical surfaces on specific lens elements (object-side surface of the first lens, image-side surface of the second lens, object-side surface of the third lens) to locally correct aberrations in critical areas. This localized optimization of surface quality allows the system to maintain high peripheral resolution while preserving zoom functionality through controlled aberration correction in specific regions of the optical path.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If high magnification performance is implemented, then zoom capability is improved, but imaging system size increases

Engineering Contradiction:

Improvezoom capabilityVSAvoidimaging system size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The imaging lens system divides the optical system into multiple lens groups (first lens group with negative refractive power, second lens group with positive refractive power, third lens group with negative refractive power). Each lens group is optimized to contribute differently to the overall optical performance, with the first and third groups specifically addressing peripheral aberrations while the second group provides magnification, thereby resolving the contradiction between zoom capability and peripheral resolution.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent utilizes aspherical surface geometry to achieve three-dimensional correction of optical aberrations without increasing the linear dimensions of the system. By incorporating aspherical surfaces on key lens elements, the system corrects field curvature and distortion in the optical path space rather than requiring larger physical aperture or longer focal length, thus achieving high magnification performance within a compact form factor suitable for mobile devices.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 system achieves substantially equal resolution across the imaging plane, enhances chromatic and field curvature aberration correction, and facilitates miniaturization for portable devices.

Implementation Method 1

an imaging lens system may include a first lens and a second lens sequentially arranged in ascending numerical order along an optical axis of the imaging lens system from an object side of the imaging lens system toward an imaging plane

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

a first lens and a second lens sequentially arranged in ascending numerical order along an optical axis of the imaging lens system from an object side of the imaging lens system toward an imaging plane, and may satisfy one or more of the following conditional expressions

Methodology Applied

Scientific EffectAspherical surface optics: Lens

Data Source

PatentUS20260043988A1Imaging lens system

Publication Date: 2026.02.12 SAMSUNG ELECTRO MECHANICS CO LTD

AI summary

An imaging lens system includes a first lens group comprising a first lens and a second lens; a second lens group comprising a third lens, a fourth lens, and a fifth lens; and a third lens group comprising a sixth lens, a seventh lens, and an eighth lens, wherein the first lens group to the third lens group are sequentially arranged in ascending numerical order along an optical axis of the imaging lens system from an object side of the imaging lens system toward an imaging plane of the imaging lens system, and the imaging lens system satisfies the conditional expression 2.0<TTL/2ImgHT<3.0, where TTL is a distance along the optical axis from an object-side surface of the first lens to the imaging plane, and 2ImgHT is a diagonal length of the imaging plane.