Shake Correction Circuit Board Layout for Low-Resistance Rotation
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Solution Overview
Problem
Conventional camera shake correction units require excessive power due to high elastic resistance of circuit boards, especially when the CCD rotates about the optical axis, making them inefficient in reducing shake-induced image blur.
Innovation Solution
A shake correction unit design featuring a movable body, a fixed body, and a circuit board with a unique configuration of first and second circuit boards that include extended and bent portions, allowing for reduced elastic resistance by dispersing stress and optimizing movement, thereby minimizing power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional flexible substrate is used to absorb stress during camera shake, then the substrate can provide basic shock absorption, but the elastic resistance becomes excessively high when the CCD rotates about the optical axis, requiring excessive driving power
Solution Approach 1:
The circuit board is divided into multiple independent flexible portions (first flexible portion, second flexible portion, third flexible portion) that can deform independently. Each portion handles specific stress directions, distributing the mechanical load and reducing overall elastic resistance during CCD rotation about the optical axis.
Solution Approach 2:
The circuit board transitions from a rigid structure to a dynamic flexible structure that adapts its shape during operation. The flexible portions are designed to deform elastically in response to shake forces, allowing the board to absorb stress dynamically rather than resisting it statically, thereby reducing elastic resistance.
2Stability of the object's composition
If a rigid circuit board is used to support the CCD, then structural stability is maintained, but the elastic resistance increases during rotation, leading to excessive power consumption
Solution Approach 1:
Different regions of the circuit board have different flexibility characteristics. The flexible portions are strategically positioned to provide localized flexibility where needed for stress absorption, while other regions maintain rigidity for structural support. This local differentiation allows the board to achieve both stability and low elastic resistance during rotation.
Solution Approach 2:
The circuit board employs a composite structure combining rigid and flexible elements. The flexible portions are integrated into the rigid circuit board framework, creating a composite structure that exhibits both structural stability and elastic compliance. This composite design enables the board to maintain stability while reducing elastic resistance during CCD rotation.
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 reduces the elastic resistance of the circuit board, enabling efficient shake correction with lower power consumption, even during rotations, thereby improving image stabilization without increasing power demands.
Implementation Method 1
the elastic resistance of the circuit board can be reduced even when the movable body rotates about the first rotation axis extending in the first direction
Data Source
AI summary
In a shake correction unit, a first circuit board has a first portion extending from a first side to a second side in a direction, a second portion extending from the second side to the first side in the direction, and a bent portion in which an end portion on the second side of the second portion is bent with respect to an end portion on the second side of the first portion. A second circuit board has a first portion extending from the second side to the first side in the direction, a second portion extending from the first side to the second side in the direction, and a bent portion in which an end portion on the first side of the second portion is bent with respect to an end portion on the first side of the first portion.