Camera Reflection Module With Magnetic Holder Self-Centering

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Solution Overview

Problem

The reflection member in camera modules tilts when the camera is turned off due to its rotatable state, leading to potential misalignment issues.

Innovation Solution

A reflection module with a holder that is rotatable about two perpendicular axes, utilizing magnetic forces to stabilize the holder's position, including both attractive and repulsive forces to return it to the original position after shake correction, reducing power consumption by a mechanical centering structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the holder is made rotatable to enable shake correction, then the shake correction function is improved, but the reflection member tilts to one side when the camera module is turned off

Engineering Contradiction:

Improveshake correction functionVSAvoidholder position stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The magnetic forces between the first magnetic portion on the holder and the second magnetic portion on the housing automatically return the holder to its initial position without requiring external power or control systems. The system uses the magnetic field interaction to self-correct the holder's position, eliminating the need for continuous power supply to maintain stability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent changes the physical state of the magnetic interaction by positioning the first and second magnetic portions at specific distances from the rotation axis. This creates a restoring force that changes the holder's position parameter back to the initial state when rotated during shake correction, enabling automatic return without continuous actuation.

Inventive Principle:

Principle #35Parameter changes

2Force

If magnetic portions are disposed close to each other to strengthen the magnetic force, then the restoring force is improved, but the risk of contact and mechanical interference increases

Engineering Contradiction:

Improvemagnetic force strengthVSAvoidcontact interference risk

Core Design Contradiction:

ForceVSObject-affected harmful factors

Solution Approach 1:

The first and second magnetic portions are positioned asymmetrically relative to the rotation axis, with the first magnetic portion closer to the rotation axis than the second magnetic portion. This asymmetric arrangement creates a restoring force that acts to return the holder to its initial position while maintaining safe distances to prevent contact between the magnetic portions during normal operation.

Inventive Principle:

Principle #4Asymmetry

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 solution effectively stabilizes the reflection member, ensuring accurate alignment without continuous power supply, enhancing image quality and reducing power consumption.

Implementation Method 1

both an attractive force and a repulsive force act between the first magnetic portion and the second magnetic portion

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS20250355317A1Reflection module and camera module including reflection module

Publication Date: 2025.11.20 SAMSUNG ELECTRO MECHANICS CO LTD

AI summary

A reflection module includes a housing; a holder disposed in the housing and configured to be rotatable relative to the housing; a first magnetic portion disposed on one surface of the holder; and a second magnetic portion disposed on one surface of the housing and facing the first magnetic portion, wherein both an attractive force and a repulsive force act between the first magnetic portion and the second magnetic portion.