Synchronized Image Sensor and Lens Shifting for Camera Stabilization
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Solution Overview
Problem
Existing camera devices face challenges in image stabilization due to increased size in the x-axis/y-axis direction caused by lens shifting methods, and there is a need for a more precise stabilization function.
Innovation Solution
Implementing an image stabilization function through image sensor shifting, synchronized with lens shifting, using a camera device with a configuration that includes a second coil and magnet system to electromagnetically interact, minimizing size and enhancing stabilization precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lens shifting method is used for image stabilization, then image stabilization function is achieved, but the length in the x-axis/y-axis direction of the camera device increases as much as the stroke length of the lens
Solution Approach 1:
Instead of moving the lens to achieve image stabilization, the patent inverts the approach by moving the image sensor in the opposite direction. This allows the optical axis to remain aligned while compensating for hand shaking, thereby achieving image stabilization without increasing the device's external dimensions in the x-axis/y-axis direction.
Solution Approach 2:
The patent introduces a third dimension (optical axis direction) for image sensor movement, perpendicular to the traditional x-axis/y-axis lens shifting plane. This dimensional change enables image stabilization through sensor displacement along the optical axis, avoiding the need for increased device width or height required by lens shifting mechanisms.
2Length of moving object
If image sensor shifting is implemented for image stabilization, then device size is reduced, but stabilization precision may be compromised without synchronization with lens shifting
Solution Approach 1:
The patent merges lens shifting and image sensor shifting operations into a synchronized dual-movement system. Both the lens and image sensor move in coordination along the optical axis, combining their stabilization effects to achieve higher precision while maintaining a compact device form factor without requiring increased x-axis/y-axis dimensions.
Solution Approach 2:
The patent implements feedback control by detecting hand shaking movements and using this information to coordinate the movement of both the lens and image sensor. The system continuously monitors shaking patterns and adjusts the synchronization of lens and sensor positioning to maintain optimal stabilization precision throughout the shaking cycle.
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 synchronized image sensor and lens shifting method reduces the camera device's size in the x-axis/y-axis direction and provides enhanced image stabilization by maintaining alignment during hand-shaking, achieving precise image stabilization.
Implementation Method 1
using a camera device with a configuration that includes a second coil and magnet system to electromagnetically interact
Data Source
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AI summary
The present embodiment relates to a camera device comprising: a mover comprising a first magnet; a lens; a stator comprising a first coil; a first substrate; a second substrate movably disposed on the first substrate; an image sensor disposed on the second substrate; a second coil disposed on the first substrate; and a second magnet disposed on the second substrate and facing the second coil, wherein the second substrate comprises: a coupling part coupled to the image sensor, and an extension part extending outwardly from the coupling part so that at least a portion thereof overlaps with the first substrate in the optical axis direction, and the camera device further comprises a ball disposed between the first substrate and the extension part of the second substrate.