Six-Lens Camera Optics for Wide-Angle Imaging in Compact Modules

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Solution Overview

Problem

Conventional optical systems struggle to balance high image quality, low sensitivity, proper aperture size, miniaturization, and desirable field of view due to advancements in semiconductor technology and increasing functionality requirements.

Innovation Solution

A photographing optical system comprising six lens elements with specific refractive powers and surface shapes, including a first lens with negative power and concave surfaces, a third lens with negative power and concave surfaces, a fifth lens with positive power and convex surfaces, and a sixth lens with convex and concave surfaces, along with an aperture stop, to achieve balanced performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional optical system design is used, then manufacturing and assembly are simpler, but it is difficult to balance high image quality, low sensitivity, proper aperture size, miniaturization and desirable field of view

Engineering Contradiction:

Improveimage qualityVSAvoidoptical system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The optical system is divided into six distinct lens elements with specific refractive powers and surface shapes. Each lens element (first through sixth) has carefully designed object-side and image-side surfaces with specific curvature radii, allowing independent optimization of optical parameters to achieve high image quality while maintaining system compactness

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the lens surfaces are designed with different curvatures and refractive properties. The object-side and image-side surfaces of each lens element have different curvature radii (e.g., first lens element has object-side curvature R1 and image-side curvature R2), enabling localized control of light paths to correct aberrations and improve image quality in specific field regions

Inventive Principle:

Principle #3Local quality

2Volume of moving object

If the optical system is miniaturized, then the device size is reduced, but it becomes difficult to maintain desirable field of view and image quality

Engineering Contradiction:

Improveoptical system sizeVSAvoidfield of view

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The six lens elements are arranged in a compact nested configuration along the optical axis, with each subsequent lens element positioned close to the previous one. This nested arrangement minimizes the total axial length of the optical system while maintaining the necessary optical path length for achieving a wide field of view of 118.5 degrees or more

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent achieves miniaturization by optimizing the lateral dimensions and surface curvatures of the lens elements rather than simply reducing axial length. The object-side and image-side surfaces of each lens have different curvature radii, enabling compact radial positioning while maintaining adequate optical path length for wide-angle performance

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Manufacturing precision

If the aperture size is increased, then more light is captured for better image quality, but the system becomes more sensitive and larger

Engineering Contradiction:

Improveimage qualityVSAvoidsensitivity

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent achieves proper balance of aperture characteristics by carefully selecting and optimizing multiple optical parameters simultaneously: the refractive powers of the six lens elements, their respective curvature radii (R1 through R22), axial distances between elements, and central thicknesses. This multi-parameter optimization enables the system to capture sufficient light for high image quality while controlling sensitivity and maintaining compact dimensions

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 system achieves a wide field of view, enhanced image quality, and reduced size while maintaining low sensitivity, effectively addressing the challenges of conventional systems.

Implementation Method 1

a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS20260029618A1Photographing optical system, image capturing unit and electronic device

Publication Date: 2026.01.29 LARGAN PRECISION

AI summary

A photographing optical system includes six lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof and having at least one inflection point. The third lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The fifth lens element has positive refractive power. The sixth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof.