Magnetic Rolling Drive Mechanism for Optical Shake Correction
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Solution Overview
Problem
Existing optical units with shake correction functions for portable terminals or movement bodies face high load and power consumption issues due to the magnetic rolling drive mechanism's requirement to turn the optical module and holder together with the magnetic swing drive mechanism during axial line shake correction.
Innovation Solution
The optical unit design includes a magnetic swing drive mechanism structured between the optical module and the fixed body, allowing the magnetic rolling drive mechanism to only turn the drive magnet and coil with the optical module and holder, reducing the load on the magnetic rolling drive mechanism and enabling shake correction with reduced power consumption and increased accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic rolling drive mechanism turns the optical module and holder together with the magnetic swing drive mechanism during shake correction, then shake correction function is achieved, but load on the magnetic rolling drive mechanism becomes large
Solution Approach 1:
The patent segments the drive mechanisms into two independent systems: magnetic swing drive mechanism (with swing drive coil and swing drive magnet) for pitching/yawing correction, and magnetic rolling drive mechanism (with rolling drive coil and rolling drive magnet) for rolling correction. This segmentation allows each mechanism to operate independently, reducing the load on the magnetic rolling drive mechanism during shake correction operations.
2Reliability
If the magnetic rolling drive mechanism turns the optical module and holder together with the magnetic swing drive mechanism, then shake correction is achieved, but power consumption increases
Solution Approach 1:
The patent implements independent magnetic drive mechanisms for different correction axes. The magnetic swing drive mechanism handles pitching and yawing corrections while the magnetic rolling drive mechanism handles only rolling corrections. This segmentation reduces unnecessary energy consumption by the magnetic rolling drive mechanism during non-rolling shake correction operations.
3Reliability
If the magnetic swing drive mechanism is structured between the optical module and the case, then the magnetic rolling drive mechanism must turn all components, but device size increases
Solution Approach 1:
The patent structures the magnetic swing drive mechanism between the optical module and the fixed body, and positions the magnetic rolling drive mechanism between the holder and the fixed body. This spatial segmentation allows compact arrangement of drive mechanisms and reduces the overall device size by eliminating unnecessary mechanical linkages.
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 configuration reduces the load on the magnetic rolling drive mechanism, enabling shake correction around the axial line with high accuracy and low power consumption, while also protecting the turnable support mechanism and reducing the device's size.
Implementation Method 1
a magnetic swing drive mechanism structured between the optical module and the fixed body... includes a swing drive coil fixed to the optical module and a swing drive magnet fixed to the fixed body
Implementation Method 2
a magnetic rolling drive mechanism structured to turn the holder... includes a rolling drive coil fixed to the holder and a rolling drive magnet fixed to the fixed body
Data Source
AI summary
An optical unit with a shake correction function may include an optical module which holds an optical element, a swing support mechanism structured to swingably support the optical module, a holder which holds the optical module through the swing support mechanism, a turnable support mechanism which turnably supports the holder around the axial line, a fixed body which supports the holder through the turnable support mechanism, a magnetic swing drive mechanism structured to swing the optical module, and a magnetic rolling drive mechanism structured to turn the holder. The magnetic swing drive mechanism may include a swing drive magnet fixed to the fixed body and a swing drive coil fixed to the optical module. The magnetic rolling drive mechanism may include a rolling drive magnet fixed to the fixed body and a rolling drive coil disposed on the holder.