Photographing Module Elastic Actuation for Vibration Compensation

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Solution Overview

Problem

Existing photographing modules with optical image stabilizers suffer from flux leakage in magnetic elements, complexity, and high costs due to numerous parts, making them difficult to reduce size and cost while effectively correcting blurry images caused by camera shakes.

Innovation Solution

A photographing module design featuring a supporting frame with elastic and electrically-driven elements, a movable element with an optical system, and vibration sensors to detect and compensate for camera shakes, using fewer parts and lower-cost materials like shape memory alloys and wire springs to achieve axis movement and stabilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If magnetic elements are used to provide magnetic force to keep balls between movable element and holder, then the movable element can move in two axis directions, but flux leakage occurs easily in the magnetic element and affects peripheral electronic components

Engineering Contradiction:

Improvemovement capability in two axis directionsVSAvoidmagnetic flux leakage affecting electronic components

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent removes the magnetic elements and balls from the system entirely, replacing them with elastic elements and electrically-driven elements. This extraction eliminates the source of magnetic flux leakage while preserving the core functionality of moving the movable element in two axis directions through alternative actuation mechanisms.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the magnetic field-based mechanical system with an elastic-mechanical system driven by electrically-driven elements. The elastic elements provide the necessary mechanical force transmission without requiring magnetic fields, thereby substituting a magnetic system with a purely mechanical/elastic system that does not produce flux leakage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If numerous parts are assembled to enable movable element movement and stabilization, then image stabilization function is achieved, but assembly becomes difficult and product size and cost increase

Engineering Contradiction:

Improveimage stabilization functionVSAvoidnumber of parts and assembly difficulty

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple separate components into integrated structures. The elastic elements are received by accommodation spaces formed directly in the holder and movable element, combining support and actuation functions into unified components. This reduces the total part count while maintaining the image stabilization function through coordinated action of fewer, more integrated parts.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The holder and movable element are designed with multi-functional accommodation spaces that serve multiple purposes: supporting elastic elements, housing electrically-driven elements, and providing structural support. This multi-functionality reduces the need for separate dedicated components, thereby reducing overall device complexity while maintaining stabilization reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If numerous parts are used in the photographing module, then image stabilization is achieved, but cost increases

Engineering Contradiction:

Improveimage stabilization functionVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent combines multiple functions into fewer parts, reducing the quantity of substance required. The elastic elements serve both as support structures and as actuators when combined with the electrically-driven elements, eliminating the need for separate magnetic elements, balls, and other components. This merging reduces part count while maintaining stabilization functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent employs elastic elements made from cost-effective materials that can be easily manufactured and replaced if needed. These elastic components are simpler and cheaper than magnetic assemblies, reducing the overall cost of the photographing module while maintaining the necessary image stabilization performance.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 module effectively reduces the number of parts and costs while providing stable image correction by using elastic and electrically-driven components to compensate for camera shakes, enhancing the module's reliability and cost-effectiveness.

Implementation Method 1

an elastic element received by the at least one first elastic element accommodation space of the supporting frame and the at least one second elastic element accommodation space of the movable element and configured to provide an elastic force in at least one axis direction

Methodology Applied

Scientific EffectElastic force: Elasticity

Implementation Method 2

an electrically-driven element received by the at least one first electrically-driven element accommodation space of the supporting frame and the at least one second electrically-driven element accommodation space of the movable element and configured to cause the movable element to move in at least one axis direction

Methodology Applied

Scientific EffectElectrical to mechanical energy transformation: Linear Motor

Implementation Method 3

a vibration sensor disposed at any proper position of the photographing module for detecting a direction and a magnitude of a vibration

Methodology Applied

Scientific EffectVibration detection: Accelerometer

Data Source

PatentUS8559803B2Photographing module

Publication Date: 2013.10.15 LARGAN PRECISION

AI summary

This invention provides a photographing module comprising: a supporting frame having a movable element accommodation space, at least one first elastic element accommodation space and at least one first electrically-driven element accommodation space; a movable element having an optical system unit, at least one second electrically-driven element accommodation space and at least one second elastic element accommodation space, the movable element being received by the movable element accommodation space; an electrically-driven element received by the at least one first electrically-driven element accommodation space and the at least one second electrically-driven element accommodation space; an elastic element received by the at least one first elastic element accommodation space and the at least one second elastic element accommodation space, the elastic element being capable of sliding in the at least one second elastic element accommodation space; a vibration sensor disposed at a proper position of the photographing module for detecting a direction and a magnitude of a vibration; and a photo sensor disposed at an image side of the photographing module.