Image Blur Correction Mechanism With Slit Heat-Dissipating Sheet

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Solution Overview

Problem

Conventional image blur correction mechanisms in imaging devices face challenges in effectively dissipating heat generated by image sensors and electronic components without increasing the overall size or interfering with the drive control of movable portions.

Innovation Solution

An image blur correction mechanism with a heat-dissipating structure that includes a movable portion, support portion, and a heat-dissipating sheet, where the heat-dissipating sheet thermally connects the movable and support portions without signal lines, and features a bent connection portion with slit portions to manage heat transfer and minimize mechanical load.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the thickness direction of the heat transfer member is oriented perpendicular to the optical axis to improve heat dissipation, then heat dissipation performance is improved, but the load on the image blur correction mechanism increases

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidload on image blur correction mechanism

Core Design Contradiction:

TemperatureVSForce

Solution Approach 1:

The heat transfer member is divided into multiple thin layers stacked in the thickness direction rather than using a single thick member. This segmentation allows heat to be dissipated through multiple interfaces while reducing the overall thickness and mechanical load on the image blur correction mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Heat dissipation is achieved by utilizing the stacking direction (thickness dimension) of multiple thin layers rather than increasing the lateral dimensions. This dimensional approach allows effective heat dissipation without increasing the load on the image blur correction mechanism.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Temperature

If the width of the heat transfer member is increased to improve heat dissipation, then heat dissipation performance is improved, but the overall size of the image blur correction mechanism increases

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidoverall size of image blur correction mechanism

Core Design Contradiction:

TemperatureVSVolume of moving object

Solution Approach 1:

The patent transitions from lateral heat dissipation (increasing width) to thickness-direction heat dissipation by stacking multiple thin layers. This allows heat dissipation to be achieved in the Z-axis direction without increasing the X-Y plane dimensions, thereby maintaining a compact overall size.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Multiple heat transfer members are stacked to form a composite structure, where each layer contributes to heat dissipation. This composite approach enhances thermal performance without requiring an increase in the lateral dimensions of individual members.

Inventive Principle:

Principle #40Composite materials

3Force

If a transit position is defined for the movable portion to reduce load on heat transfer member, then load reduction is achieved, but responsiveness of the image blur correction mechanism deteriorates

Engineering Contradiction:

Improveload on heat transfer memberVSAvoidresponsiveness of image blur correction mechanism

Core Design Contradiction:

ForceVSSpeed

Solution Approach 1:

The heat transfer member is segmented into multiple thin layers that can flex independently, reducing the overall rigidity and load on the movable portion while maintaining responsiveness. The segmented structure allows for greater flexibility during movement without requiring transit positions.

Inventive Principle:

Principle #1Segmentation

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

Effectively dissipates heat from image sensors without increasing the mechanism's size or disrupting the drive control of the movable portion, ensuring high-quality imaging performance.

Implementation Method 1

The heat-dissipating sheet does not include a signal line and thermally connects the movable portion and the support portion

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20250338017A1Imaging device and image blur correction mechanism having heat-dissipating structure

Publication Date: 2025.10.30 CANON KK

AI summary

An imaging device includes an imaging unit provided with an image blur correction mechanism. The image blur correction mechanism includes a movable portion that holds an image sensor, a support portion that supports the movable portion to be movable in a direction perpendicular to the imaging optical axis, and a heat-dissipating member that connects the movable portion and the support portion. The heat-dissipating member includes a connection portion that connects the movable portion and the support portion, a movable portion attachment region attached to the movable portion, and a support portion attachment region attached to the support portion. The movable portion attachment region and the support portion attachment region are arranged to overlap each other in the direction of the imaging optical axis. The connection portion includes a plurality of bent portions and slits extending parallel to the direction in which the movable portion and the support portion are connected.