Camera Module Flexible Circuit Slits for Image Shake Suppression
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Solution Overview
Problem
Existing camera technologies face challenges in minimizing power consumption and camera volume while effectively suppressing image shake, as they require continuous power to driving parts and often necessitate large piezoelectric elements for heavier CCDs.
Innovation Solution
A camera module design featuring a flexible circuit board with slits, magnetic coils, and Hall elements, where magnetic flux variation drives a moving frame and seat along orthogonal axes to compensate for image shake, reducing the force required to move the image detection unit and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous power is provided to driving parts for image shake suppression, then image shake is suppressed, but power consumption increases
Solution Approach 1:
The patent implements a switching mechanism that periodically activates the driving parts only when image shake is detected, rather than maintaining continuous operation. The control unit switches between a first driving part (for active shake suppression) and a second driving part (for power-saving mode), thereby reducing overall power consumption while maintaining effective image shake suppression when needed
2Force
If large piezoelectric elements are used to move heavier CCD, then image detection unit can be moved, but camera volume increases
Solution Approach 1:
The patent replaces traditional piezoelectric elements with a magnetic field-based driving mechanism. Electromagnetic coils generate magnetic flux that interacts with magnets attached to the image detection unit, providing the necessary force to move the CCD without requiring large piezoelectric elements. This substitution significantly reduces the volume of the camera while maintaining the capability to move the image detection unit for shake suppression
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
This design effectively suppresses image shake while minimizing power consumption and camera volume by using magnetic forces to move the image detection unit, reducing the need for large piezoelectric elements and enhancing the camera's overall efficiency.
Implementation Method 1
Magnetic flux variation is generated between the first coil and the first magnet by providing voltage to the first coil, thereby moving the first guide element in the first axis
Implementation Method 2
Magnetic flux variation is generated between the first coil and the first magnet by providing voltage to the first coil, thereby moving the first guide element in the first axis
Implementation Method 3
a first Hall element disposed on the frame adjacent to the first coil
Data Source
AI summary
A camera module comprises a main body, a cone disposed in the main body to accommodate a lens, a base joined to the cone, a frame movably disposed on the base, an image detection unit fixed to the frame and moving on the base via the frame, a first circuit board joined to the image detection unit and moving on the base via the image detection unit, a second circuit board disposed on the main body, and a flexible circuit board with one end connected to the first circuit board and the other end connected to the second circuit board. The flexible circuit board has a plurality of slits dividing the flexible circuit board into a plurality of strips. The slits are parallel and extend from the first circuit board to the second circuit board.