Imaging Module Suppression Mechanism for Magnetic Interference

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Solution Overview

Problem

Imaging modules with optical image stabilizers (OIS) in electronic devices, such as smartphones, face issues with image stabilizing movable portions being inclined due to magnetic fields generated by device components, leading to uneven image resolution.

Innovation Solution

Incorporating a suppression portion with extension and guide portions that mechanically prevent inclination of the image stabilizing movable portion by coming into contact when subjected to magnetic fields, ensuring the movable portion remains aligned with the imaging element.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the imaging module is positioned near magnetic field generation areas (e.g., speakers) to save space, then device compactness is improved, but the image stabilizing movable portion becomes inclined due to magnetic field interference

Engineering Contradiction:

Improvedevice compactnessVSAvoidalignment stability of image stabilizing movable portion

Core Design Contradiction:

Volume of moving objectVSStability of the object's composition

Solution Approach 1:

A non-magnetic shield plate is introduced as an intermediary component between the magnetic field source (speaker) and the image stabilizing movable portion. This shield plate blocks and redirects magnetic field lines, preventing them from directly affecting the movable portion while allowing the imaging module to be positioned close to the speaker for compact device design.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The magnetic field, which initially causes harmful inclination of the movable portion, is converted into a beneficial effect by using a non-magnetic shield plate to redirect it. The shield plate transforms the harmful magnetic field distribution into a controlled pattern that protects the sensitive components while maintaining device compactness.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Ease of manufacture

If the imaging module is positioned near magnetic field generation areas, then ease of device layout is improved, but image resolution becomes uneven due to inclination

Engineering Contradiction:

Improveease of device layoutVSAvoidimage resolution uniformity

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The non-magnetic shield plate serves as a mediator that allows flexible device layout near magnetic components while protecting image quality. It creates a magnetic field barrier that enables easy positioning of the imaging module without compromising resolution uniformity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the imaging module is positioned near magnetic field generation areas, then device integration is improved, but lens and imaging element alignment becomes inaccurate

Engineering Contradiction:

Improvedevice integration flexibilityVSAvoidalignment precision of lens and imaging element

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The non-magnetic shield plate acts as a protective intermediary that enables close integration of the imaging module with other device components while maintaining precise alignment between the lens and imaging element by blocking magnetic field interference.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Prevents inclination of the image stabilizing movable portion, thereby improving the evenness of image resolution and maintaining accurate positioning between the lens group and imaging element, even when the module is near magnetic field generation portions.

Implementation Method 1

the imaging module 1 comprising the elastic support portion 40 and the OIS mechanism 50 is influenced by a magnetic field generated from an electronic device on which the imaging module 1 is mounted

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

a guide portion which overlaps the extension portion when viewed from the direction of the optical axis, and prevents inclination of the image stabilizing movable portion by coming into contact with the extension portion

Methodology Applied

Scientific EffectMechanical contact: Mechanical Force

Data Source

PatentUS9813628B2Imaging module and electronic device

Publication Date: 2017.11.07 NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD

AI summary

An imaging module includes an image stabilizing movable portion which has a lens group and a magnetic member, an imaging element which images a subject through the lens group, an elastic support portion which supports the image stabilizing movable portion so as to be movable in a direction perpendicular to an optical axis of the lens group and to be inclinable around an axis perpendicular to the optical axis, and a suppression portion which mechanically prevents inclination of the image stabilizing movable portion, in which the suppression portion has an extension portion which is provided in the image stabilizing movable portion and extends in an outer circumferential direction of the image stabilizing movable portion, and a guide portion which overlaps the extension portion when viewed from the direction of the optical axis, and prevents inclination of the image stabilizing movable portion by abutting the extension portion.