Image Stabilizing Apparatus with Elastic Plate and Piezoelectric Actuation
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Solution Overview
Problem
Conventional image stabilizing apparatuses consume power even when the handshake correction function is not executed, leading to inefficient power usage and the need for additional instruments to fix the lens position.
Innovation Solution
An image stabilizing apparatus with a base, movable frames, vibration axes, piezoelectric vibration units, and magnetism sensing units that maintain elastic forces to adjust and sense the lens position, reducing power consumption and eliminating the need for additional instruments to fix the lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If power is supplied to the driving unit to fix the position of the optical element, then the position stability is improved, but the power consumption increases
Solution Approach 1:
The patent employs a voice coil motor that can dynamically adjust between fixed mode (when handshake correction is needed) and movable mode (when not needed), allowing the system to adapt its power consumption characteristics to actual operational requirements rather than maintaining continuous power supply
Solution Approach 2:
The system changes the operational state of the driving unit based on whether handshake correction is being executed, switching between powered fixed position mode and unpowered movable mode, thereby optimizing power consumption while maintaining position stability when required
2Stability of the object's composition
If additional instruments are used to fix the lens position, then the position fixing capability is improved, but the device complexity increases
Solution Approach 1:
The voice coil motor serves multiple functions: it can fix the lens position when handshake correction is not executing, and it can precisely move the lens to correct handshake when needed, eliminating the need for separate fixing instruments and reducing overall device complexity
Solution Approach 2:
The patent combines the lens fixing function and lens positioning function into a single integrated system using the movable support unit and voice coil motor, rather than requiring separate instruments for each function, thereby reducing device complexity
3Measurement precision
If the driving unit continuously operates to maintain lens position, then the position control precision is improved, but the power consumption increases
Solution Approach 1:
The system operates the voice coil motor periodically or on-demand based on whether handshake correction is being executed, rather than continuously, thereby maintaining position control precision when needed while reducing overall power consumption during non-critical periods
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 apparatus precisely adjusts the lens position to correct handshake-induced image blur while minimizing power consumption and eliminating the need for additional instruments to fix the lens, enhancing operational efficiency.
Implementation Method 1
The first vibration unit and the second vibration unit may each include a piezoelectric device that is coupled to an end of the first vibration axis or the second vibration axis and generates vibration upon receiving an electrical signal
Implementation Method 2
The image stabilizing apparatus may further comprise a first elastic plate contacting the first vibration axis to press the first vibration axis toward the first slider and a second elastic plate contacting the second vibration axis to press the second vibration axis toward the second slider
Data Source
AI summary
An image stabilizing apparatus includes: a base; a first frame movably coupled to the base in a first direction; a first vibration axis that movably support the first frame; a first vibration unit that vibrates the first vibration axis; a first sensing unit that senses a position variation of the first frame; a second frame movably coupled to the first frame in a second direction that crosses the first direction; a lens coupled to the second frame; a second vibration axis that is disposed on the first frame to movably support the second frame; a second vibration unit that vibrates the second vibration axis; a second sensing unit that senses a position variation of the second frame; and a first elastic plate including a connecting portion that is connected to the first frame and a pressing portion that is bent from the connecting portion and presses the first vibration axis.