Optical Unit Shake Correction with Segmented Rotation Member

Solution Overview

Problem

Optical units with shake correction functions face challenges in reducing the weight of the rotation member during rolling correction, leading to increased inertia and power consumption, which hinders accurate rolling correction and increases the weight of the rotation member.

Innovation Solution

The optical unit design separates the rotation member from the swing supporting and magnetic driving mechanisms, allowing it to rotate solely with a rolling magnetic driving mechanism, thereby reducing weight and inertia, while maintaining swing correction capabilities through a separate swing magnetic driving mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the rotation member includes the swing supporting mechanism and swing magnetic driving mechanism, then the swing correction function is integrated, but the weight of the rotation member increases leading to increased inertia and reduced followability

Engineering Contradiction:

Improveintegrated shake correction functionVSAvoidweight of rotation member

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The patent divides the shake correction system into two independent parts: a swing correction mechanism (with swing supporting mechanism and swing magnetic driving mechanism) and a rolling correction mechanism (with rotation member and rolling magnetic driving mechanism). The swing mechanism is fixed to the housing while the rolling mechanism is separated into its own rotation member, allowing each to be optimized independently for weight and function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The swing supporting mechanism and swing magnetic driving mechanism are extracted from the rotation member and fixed to the housing separately. This extraction removes the heavy swing correction components from the rotation member, significantly reducing its weight and moment of inertia, thereby improving followability for rolling correction operations.

Inventive Principle:

Principle #2Taking out (Extraction)

2Adaptability or versatility

If the rotation member includes the swing supporting mechanism and swing magnetic driving mechanism, then the swing correction function is integrated, but the power consumption increases

Engineering Contradiction:

Improveintegrated shake correction functionVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent divides the shake correction system into two independent parts: a swing correction mechanism (with swing supporting mechanism and swing magnetic driving mechanism) and a rolling correction mechanism (with rotation member and rolling magnetic driving mechanism). The swing mechanism is fixed to the housing while the rolling mechanism is separated into its own rotation member, allowing each to be optimized independently for weight and function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The swing supporting mechanism and swing magnetic driving mechanism are extracted from the rotation member and fixed to the housing separately. This extraction removes the heavy swing correction components from the rotation member, significantly reducing its weight and moment of inertia, thereby improving followability for rolling correction operations.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If the rotation member includes the swing supporting mechanism and swing magnetic driving mechanism, then the swing correction function is integrated, but the rolling correction accuracy decreases due to increased inertia

Engineering Contradiction:

Improveintegrated shake correction functionVSAvoidrolling correction accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent divides the shake correction system into two independent parts: a swing correction mechanism (with swing supporting mechanism and swing magnetic driving mechanism) and a rolling correction mechanism (with rotation member and rolling magnetic driving mechanism). The swing mechanism is fixed to the housing while the rolling mechanism is separated into its own rotation member, allowing each to be optimized independently for weight and function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The swing supporting mechanism and swing magnetic driving mechanism are extracted from the rotation member and fixed to the housing separately. This extraction removes the heavy swing correction components from the rotation member, significantly reducing its weight and moment of inertia, thereby improving followability for rolling correction operations.

Inventive Principle:

Principle #2Taking out (Extraction)

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 design enhances followability and accuracy in rolling correction, reduces power consumption, and prevents weight increase in the rotation member, while allowing for effective swing correction.

Implementation Method 1

a rolling magnetic driving mechanism configured to cause the rotation member to rotate

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

a swing magnetic driving mechanism that causes the movable member to swing

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentUS10948737B2Optical unit with shake correction function having swing supporting mechanism permitting a tilting posture

Publication Date: 2021.03.16 SANKYO SEIKI MFG CO LTD

AI summary

An optical unit with shake correction function capable of reducing a weight of a rotation member to be rotated in rolling correction. An optical unit with shake correction function includes: a movable member; a swing supporting mechanism supporting the movable member such that the movable member is able to swing; and a fixation member supporting the movable member via the swing supporting mechanism. The movable member includes: an imaging module; a rotation seat supporting the imaging module; a rotation supporting mechanism supporting the rotation seat such that the rotation seat is able to rotate on an optical axis of the imaging module; a supporting member supporting the rotation seat via the rotation supporting mechanism; and a rolling magnetic driving mechanism causing the rotation seat to rotate. The imaging module and the rotation seat configure the rotation member to be rotated by the rolling magnetic driving mechanism.