Imaging Lens Module Columnar Structures for Reflection Suppression

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Solution Overview

Problem

Portable electronic devices require imaging lens modules and camera modules that are compact in size while maintaining high image quality, but existing designs suffer from unwanted optical reflections that degrade image clarity.

Innovation Solution

The imaging lens module incorporates a light-blocking element with a light-blocking portion positioned closer to the optical axis, accompanied by monomer structures disposed on this portion, which are arranged parallel to the optical axis, and a cover member to reduce optical reflections through injection molding or laser processing, ensuring specific dimensions and spacing to minimize flare and improve light-blocking efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a compact imaging lens module is designed, then the size of the device is reduced, but optical reflections increase and image quality deteriorates

Engineering Contradiction:

Improvesize of imaging lens moduleVSAvoidoptical reflections

Core Design Contradiction:

Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful reflective surfaces by introducing a light-blocking element that selectively blocks non-imaging light paths. The light-blocking element is positioned to intercept reflections from the cover member and other surfaces before they can enter the optical lens assembly, effectively removing the harmful reflective pathways from the optical system.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The light-blocking element features a light-blocking portion with specific local properties (higher optical density or different material composition) positioned at a specific location closer to the optical axis. This localized modification blocks reflections only in the problematic regions while maintaining optical transparency in other areas, achieving selective interference with harmful light paths.

Inventive Principle:

Principle #3Local quality

2Reliability

If a light-blocking element is added to reduce reflections, then image clarity is improved, but device complexity increases

Engineering Contradiction:

Improveimage clarityVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The light-blocking element is merged with existing structural components of the imaging lens module, such as the lens barrel or mounting structure. By integrating the light-blocking function into an existing structural element rather than adding a completely separate component, the patent reduces the increase in device complexity while still achieving the desired reflection reduction.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light-blocking element serves multiple functions: it blocks non-imaging light reflections, provides structural support for the optical components, and may serve as a mounting structure for the optical lens assembly. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 reduces optical reflections, enhancing image clarity by preventing non-imaging light from entering the optical lens assembly and maintaining high light-blocking efficiency, thereby improving the image quality of compact camera modules.

Implementation Method 1

The light-blocking element includes a light-blocking portion positioned closer to the optical axis... effectively reduces optical reflections, enhancing image clarity by preventing non-imaging light from entering the optical lens assembly

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS12610120B2Imaging lens module, camera module and electronic device having a plurality of columnar structures for reducing reflection

Publication Date: 2026.04.21 LARGAN PRECISION

AI summary

An imaging lens module has an image surface and includes an optical lens assembly, a plurality of monomer structures and a cover member. The optical lens assembly is disposed on an object side of the image surface and defines an optical axis. The optical lens assembly includes a light-blocking element, which includes a light-blocking portion. The light-blocking portion is disposed closer to the optical axis than a portion of the light-blocking element other than the light-blocking portion thereto. The monomer structures are disposed on the object side of the image surface, and each of the monomer structures is extended along a direction parallel to the optical axis. The cover member is disposed on an object side of the optical lens assembly, and the optical axis passes through the cover member. The monomer structures are disposed on the light-blocking portion of the light-blocking element.