Anti-Shake Assembly Using Chip Motion Instead of Large VCMs
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Solution Overview
Problem
Existing camera modules with anti-shake functions require large voice coil motors to adjust multiple optical lenses, which hinders miniaturization efforts.
Innovation Solution
An anti-shake assembly that includes a circuit board with flexible boards and coils, along with a magnetic member, which generates Lorentz forces to adjust the posture of the photosensitive chip without the need for a large voice coil motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-power voice coil motor is used to adjust the position of multiple optical lenses, then the anti-shake function is improved, but the size of the camera module increases
Solution Approach 1:
The patent divides the anti-shake system into multiple independent voice coil motors, each responsible for adjusting a specific optical lens. This segmentation allows each motor to be smaller in size while collectively achieving the required anti-shake performance for multiple lenses, thus resolving the contradiction between anti-shake function and module size.
Solution Approach 2:
The patent replaces the traditional single large voice coil motor with a multi-motor system that uses electromagnetic fields to directly drive optical lenses. This substitution of mechanical transmission systems with direct electromagnetic actuation reduces the overall size of the anti-shake mechanism while maintaining effective lens position adjustment capability.
2Power
If more coil winding and a larger magnet are used in the voice coil motor, then the power output is improved, but the device complexity and size increase
Solution Approach 1:
Instead of using one large voice coil motor with extensive coil winding and large magnets, the patent segments the power requirement across multiple smaller motors. Each motor has simplified coil structures and smaller magnets, reducing individual component complexity while collectively providing sufficient total power for adjusting multiple optical lenses.
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 size of the camera module while maintaining the anti-shake function, achieving miniaturization without compromising performance.
Implementation Method 1
a magnetic member (3), wherein the magnetic member (3) includes a base (31) and a plurality of magnets (32)
Data Source
AI summary
An anti-shake assembly with reduced size is disclosed which includes a circuit board, a photosensitive chip, and a magnetic component. The circuit board includes a first rigid board, a second rigid board, a plurality of connectors, and a plurality of coils. The first rigid board has a housing space. The second rigid board is movably housed in the housing space. The connectors are flexibly connected between the first rigid board and the second rigid board. The photosensitive chip and the coils are provided on the second rigid board. The magnetic component includes a base and a plurality of magnets. The base includes a central plate and a side plate. The side plate is arranged around a periphery of the central plate to form a housing space. The magnets are provided on the central plate facing the housing space. The magnets are arranged opposite to the coils.