Imaging Lens Module Plastic Barrel Image-Side Element

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Solution Overview

Problem

Conventional imaging lens modules struggle to balance requirements such as image quality, sensitivity, aperture size, volume, and field of view effectively.

Innovation Solution

The proposed imaging lens module includes a plastic barrel, an optical lens assembly, an image-side assembled element, and a light blocking element assembly, with specific geometric relationships and structural features to optimize these parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional imaging lens modules are used, then manufacturing and assembly are simpler, but image quality, sensitivity, aperture size, volume, and field of view cannot be effectively balanced

Engineering Contradiction:

Improveimage qualityVSAvoidmodule structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The imaging lens module is divided into multiple functional components: optical lens assembly, plastic barrel, image-side assembled element, and light blocking element assembly. Each component is independently designed and manufactured, then assembled together, allowing optimization of image quality while managing overall complexity through modular architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The image-side assembled element is disposed inside the plastic barrel, and the light blocking element assembly is disposed inside the image-side assembled element. This nested configuration allows multiple functional elements to be integrated in a compact arrangement, balancing aperture size and field of view while controlling overall module volume.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Illumination intensity

If aperture size is increased to improve sensitivity and image quality, then more light is captured, but volume and device size increase

Engineering Contradiction:

ImprovesensitivityVSAvoidmodule volume

Core Design Contradiction:

Illumination intensityVSVolume of moving object

Solution Approach 1:

The light blocking element assembly includes light blocking elements arranged in specific three-dimensional configurations within the image-side assembled element. This spatial arrangement controls light paths in multiple dimensions, allowing increased aperture size for improved sensitivity while preventing stray light and maintaining compact volume through clever geometric design.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Volume of moving object

If compact form factor is reduced for smaller device size, then portability improves, but manufacturing precision and assembly difficulty worsen

Engineering Contradiction:

Improveform factorVSAvoidassembly precision

Core Design Contradiction:

Volume of moving objectVSManufacturing precision

Solution Approach 1:

The plastic barrel includes a first contacting surface and the image-side assembled element includes a second contacting surface, designed to contact each other at predetermined positions. This preliminary design of contact interfaces ensures precise alignment and positioning during assembly, maintaining manufacturing precision even in the compact form factor.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent specifies that when the length of the plastic barrel along the optical axis is L1 and the length of the image-side assembled element along the optical axis is L2, the condition L1/L2 ≥ 1.5 is satisfied. This parameter relationship optimizes the compact configuration while ensuring sufficient space for precise assembly and light blocking element placement.

Inventive Principle:

Principle #35Parameter changes

4Manufacturing precision

If light blocking elements are added to reduce stray light and improve image quality, then image quality improves, but device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improveimage qualityVSAvoidassembly complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The light blocking element assembly is integrated with the image-side assembled element as a combined unit. The light blocking elements are disposed inside the image-side assembled element, merging the light blocking function with the structural housing into a single assembled component, thereby reducing overall assembly complexity while maintaining image quality.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12265277B2Imaging lens module with plastic barrel and electronic device including same module

Publication Date: 2025.04.01 LARGAN PRECISION

AI summary

An imaging lens module has an optical axis, an object side and an image side. The imaging lens module includes a plastic barrel, an optical lens assembly, an image-side assembled element and a light blocking element assembly. The plastic barrel includes a first contacting surface, which is close to an image-side end of the plastic barrel. The image-side assembled element is disposed close to the image-side end of the plastic barrel. The image-side assembled element is in a tube shape and extends from the object side to the image side. The image-side assembled element includes a second contacting surface and an inner protruding portion, and the second contacting surface is disposed close to an object-side end of the image-side assembled element and correspondingly to the first contacting surface. The plastic barrel and the image-side assembled element contact each other via the first contacting surface and the second contacting surface.