Swingable Optical Assembly for Camera Shake Axis Stability
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Solution Overview
Problem
Conventional image stabilization devices for cameras fail to adequately correct lens movement during camera shake due to deviations in the position of the movable body with respect to the fixed portion, leading to insufficient image stabilization.
Innovation Solution
An optical assembly with a movable body supported swingably by a fixed body, utilizing a contact portion pressed by an elastic body and a magnet-coil mechanism to stabilize the movable body's position, allowing for effective correction of camera shake through controlled rotation about multiple axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a ball member is pressed by an elastic body to adjust pressure between movable body and fixed portion, then the pressure adjustment function is achieved, but the position of the movable body deviates with respect to the fixed portion
Solution Approach 1:
A magnetic field is introduced as an intermediary force between the movable body and fixed body. The magnetic attraction force replaces the mechanical contact force from the elastic body, allowing pressure adjustment without physical contact that causes position deviation. The magnetic field acts as a mediator that transmits force without the drawbacks of direct mechanical pressing.
Solution Approach 2:
The mechanical pressing system (elastic body physically contacting the ball member) is replaced with a magnetic field-based force application system. The coil generates a magnetic field that attracts the magnetic body, substituting the mechanical contact force with a field-based force that does not cause position deviation or contact wear.
2Force
If the elastic body presses the ball member from the side, then pressure adjustment is achieved, but the movable body is not appropriately movable with respect to the fixed portion
Solution Approach 1:
The mechanical pressing mechanism is replaced with a magnetic field-based actuation system. The coil generates a magnetic field that can be controlled to provide precise force adjustment, enabling smooth and appropriate movability of the movable body without the mechanical constraints and friction associated with elastic body pressing.
Solution Approach 2:
The system transitions from a static mechanical pressure application (elastic body constantly pressing) to a dynamic magnetic field-based force control. The magnetic attraction force can be dynamically adjusted by controlling the coil current, allowing the movable body to move appropriately in response to changing conditions while maintaining controlled pressure.
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 optical assembly effectively stabilizes images by correcting camera shake, ensuring stable image capture and reducing deviations in the optical axis, even in small form factors suitable for smartphones and other devices.
Implementation Method 1
an elastic body that presses the contact portion toward the fixed body
Implementation Method 2
a magnet-coil mechanism to stabilize the movable body's position
Data Source
AI summary
An optical assembly includes a fixed body and a movable body supported swingably with respect to the fixed body, and the movable body includes an optical element including an optical axis, a holder into which the optical element is insertable, a contact portion in the holder and in contact with the fixed body, and an elastic body to press the contact portion toward the fixed body.