Stage Driving Device Magnetic Stabilization for Imaging Apparatus
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Solution Overview
Problem
Stage driving devices used in motion blur correction mechanisms for imaging apparatuses face issues with positional shifts and vibrations due to clearance in support structures, leading to image surface misalignment, optical performance deterioration, and unwanted noise during movement.
Innovation Solution
Incorporating a magnetic sensor and magnetic body at different positions along the movement plane to stabilize the movable section using magnetic forces, ensuring precise positioning and minimizing vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a support structure with clearance is used to accommodate individual differences of components, then the device can be manufactured with standard tolerances, but the movable section experiences positional shifts and vibrations that deteriorate optical performance
Solution Approach 1:
The patent replaces the purely mechanical support structure with a hybrid system that incorporates a magnetic field. The magnetic body generates a magnetic force that acts on the movable section, providing positional stabilization without requiring tight mechanical clearances. This substitution of mechanical constraints with magnetic forces allows standard manufacturing tolerances while maintaining high positional stability.
Solution Approach 2:
The patent changes the physical state or properties of the support system by introducing magnetic interaction. By utilizing magnetic force as an additional support mechanism, the system can accommodate mechanical clearances while maintaining stable positioning. The magnetic parameter (magnetic force) compensates for the mechanical clearance, allowing both ease of manufacture and reliability to be achieved.
2Reliability
If the movable section is stabilized using magnetic force between magnetic body and magnet, then positional stability and precision are improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent makes the magnetic body serve multiple functions: it generates the magnetic force for stabilizing the movable section's position, and it also serves as the magnetic sensor for detecting position. By combining these functions into a single component, the patent avoids the need for separate magnetic sensors, thereby reducing device complexity while maintaining the benefits of magnetic stabilization.
Solution Approach 2:
The patent merges the magnetic body and magnetic sensor into a single integrated component. This consolidation eliminates the need for separate positioning sensors and reduces the overall number of parts in the system, making the added stabilization capability less intrusive to the overall device complexity.
3Device complexity
If spherical rolling bodies are used to support the movable section, then the structure is simple and easy to manufacture, but clearance causes positional shifts and vibrations during movement
Solution Approach 1:
The patent replaces the purely mechanical spherical rolling body support with a hybrid system that incorporates magnetic force. The magnetic body provides a stabilizing force that compensates for the clearance inherent in the simple mechanical support structure, thereby maintaining both structural simplicity and manufacturing ease while improving positional accuracy.
Solution Approach 2:
The patent introduces a magnetic parameter to the mechanical support system. By adding magnetic force interaction, the system can tolerate larger mechanical clearances while achieving higher positional accuracy. This parameter change allows the simple spherical rolling body structure to achieve precision that would otherwise require complex mechanical constraints.
4Ease of operation
If clearance is provided in the support structure to accommodate component variations, then assembly is easier, but unusual sounds are generated during movement that are recorded in movies
Solution Approach 1:
The patent replaces the purely mechanical contact-based support with a magnetic field-based stabilization system. The magnetic force provides continuous contactless support that eliminates the mechanical impacts and vibrations causing unusual sounds, while still allowing easy assembly with standard clearances.
Solution Approach 2:
The patent changes the nature of the support interaction from mechanical contact to magnetic field interaction. This parameter change eliminates the source of unusual sounds (mechanical impacts due to clearance) while maintaining ease of assembly, as the magnetic field can accommodate standard clearances without causing noise.
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 solution effectively stabilizes the movable section, maintaining high precision in image alignment and reducing unwanted noise, thereby enhancing optical performance and image quality during motion blur correction.
Implementation Method 1
the magnetic body being configured to make the position of the movable section stable with respect to the secured section in a direction perpendicular to the movement plane using a magnetic force that acts between the magnetic body and the magnet
Implementation Method 2
Applying current to the coil in a magnetic field generates a thrust for driving the movable section
Data Source
AI summary
A stage driving device includes a secured section; a movable section supported movably along a movement plane relative to the secured section; a driver including a magnet at one of the secured section and the movable section and a coil at the other one of the secured section and the movable section; a magnetic sensor at one of the secured section and the movable section provided with the coil, the magnetic sensor configured to detect a position of the movable section with respect to the secured section; and a magnetic body at the one of the secured section and the movable section provided with the coil, the magnetic body configured to make the position of the movable section stable with respect to the secured section in a direction perpendicular to the movement plane using a magnetic force that acts between the magnetic body and the magnet.