Camera Shake Correction Mechanism Using Magnetic Spherical Bodies
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Solution Overview
Problem
Conventional camera shake correction mechanisms in digital cameras often fail to securely hold the movable frame in place during impacts, leading to image blur due to separation from the magnetic spherical body, requiring additional components like locking levers and motors for center position correction.
Innovation Solution
An imaging apparatus with a correction mechanism featuring three magnetically attracted and held devices forming a triangular arrangement, using metal plates and magnetic spherical bodies to re-attach the movable frame to the base during movement, eliminating the need for a locking lever and motor by employing guide devices that move the frame along with its movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetism of the magnet is increased to increase the attracting force, then the movable frame is held more securely to the base, but the movement in the X- and Y-directions becomes less smooth and the camera shake correction operation is interrupted
Solution Approach 1:
The patent divides the holding function into multiple magnetic spherical bodies (at least three) distributed at different positions on the base. This segmentation allows the system to maintain strong overall holding force while each individual magnetic body maintains a manageable magnetic field strength that doesn't interfere with movement smoothness.
Solution Approach 2:
The patent applies magnetic holding force locally at multiple discrete positions rather than using a single strong magnet. Each magnetic spherical body provides localized holding at its position, and the combined effect achieves secure overall holding without the need for excessively strong individual magnetic fields that would disrupt movement.
2Ease of operation
If the attracting force of the magnet is set to small to enable smooth movement, then the movable frame can move smoothly in X- and Y-directions, but the movable frame separates from the iron ball during impact and is not securely held to the base
Solution Approach 1:
The patent uses multiple magnetic spherical bodies positioned at different locations on the base. During normal operation, each provides gentle localized holding. During impact, the distributed arrangement ensures that at least some magnetic bodies maintain contact and holding force, preventing complete separation of the movable frame.
Solution Approach 2:
The patent transitions from a single-point magnetic holding approach to a multi-point distributed holding approach. By arranging magnetic spherical bodies in a triangular pattern (at least three positions), the system adds spatial distribution as a new dimension to the holding mechanism, improving both smoothness and impact resistance.
3Reliability
If a locking lever and motor are added to securely hold the movable frame during impact, then the holding stability is improved, but the device complexity increases
Solution Approach 1:
The patent employs magnetic spherical bodies that passively provide holding force through their inherent magnetic properties. The system self-regulates: during normal movement, the magnetic force is sufficient to maintain contact without interfering with smooth motion; during impact, the same magnetic force automatically increases its effectiveness to prevent separation. No active control mechanisms are required.
Solution Approach 2:
The patent replaces the mechanical locking lever and motor system with a magnetic field-based holding system. The magnetic spherical bodies create magnetic fields that provide both the holding force and the smooth movement capability, eliminating the need for separate mechanical locking and actuation mechanisms.
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
Effectively prevents image blur by securely re-attaching the movable frame to the base without additional components, ensuring stable image correction and miniaturization of the camera apparatus.
Implementation Method 1
a magnetic spherical body that is provided between the metal plate having magnetism and the magnet plate; the attracting and holding device attracting and holding the movable frame to the base by attracting the metal plate having magnetism to the magnet plate via the magnetic spherical body
Data Source
AI summary
An imaging apparatus includes: a base; an image sensor; and a correction mechanism that prevents an image blur, the correction mechanism including: a movable frame that holds the image sensor; a device for moving in an X-direction; a device for moving in a Y-direction; and an attracting and holding device including: an iron plate provided on one of the movable frame and the base; a magnet plate provided on the other one; and an iron ball provided between the iron plate and the magnet plate, the attracting and holding device attracting and holding the movable frame to the base by attracting the iron plate to the magnet plate via the iron ball, and wherein a guide device moves the movable frame to a side of the base when the movable frame is moved by the devices for moving in the X- and Y-directions in a predetermined direction.