Optical Image Stabilizer Merging Lens and Anti-Shake Modules
Solution Overview
Problem
Conventional optical anti-shake mechanisms are complex, cumbersome, and difficult to miniaturize, leading to increased volume and weight in imaging devices, which hinders the achievement of lightweight, slim, and compact designs.
Innovation Solution
An optical image stabilizer is designed with an anti-handshake compensation module integrated within the lens module, utilizing a casing, fixing plate, movable part, coil, magnet, compensation module, and suspension module to minimize X-Y surface area, allowing for reduced volume and weight while maintaining effective image stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional optical anti-shake mechanism is introduced, then image stabilization function is improved, but device volume and weight increase
Solution Approach 1:
The patent merges the anti-shake compensation module with the lens module by integrating the compensation coil and magnet system into the existing lens movable part structure. The compensation module shares the same movable part supporter and suspension mechanism as the lens module, allowing both focusing/zooming and anti-shake functions to coexist in a unified structure, thereby achieving image stabilization without significantly increasing device volume.
Solution Approach 2:
The movable part supporter structure serves multiple functions: it supports the lens module for focusing/zooming operations and simultaneously supports the compensation coil and magnet for anti-shake compensation. The suspension module both suspends the lens and provides the movable platform for the compensation mechanism, enabling one structure to perform multiple functions and reduce overall device volume.
2Reliability
If a conventional optical anti-shake mechanism is introduced, then image stabilization function is improved, but device weight increases
Solution Approach 1:
The patent combines the anti-shake compensation components with the lens module components, sharing common structural elements such as the movable part supporter, suspension module, and magnetic field generation system. This merging eliminates duplicate structures and reduces overall weight while maintaining effective image stabilization functionality.
Solution Approach 2:
The patent employs an electromagnetic compensation mechanism using coils and magnets to achieve anti-shake compensation, replacing traditional mechanical anti-shake mechanisms that would require heavier mechanical linkages, springs, and adjustment components. The electromagnetic system achieves the same stabilization effect with significantly reduced weight.
3Volume of moving object
If the compensation module is positioned closer to the coil, then miniaturization is improved, but optical performance may be degraded
Solution Approach 1:
The patent positions the compensation module in a spatial arrangement where the compensation coil and magnet are located at different Z-axis positions relative to the image sensing module. By utilizing the vertical dimension (Z-axis) for coil-magnet positioning while maintaining horizontal (X-Y plane) compactness, the design achieves miniaturization without compromising optical performance, as the compensation field acts perpendicular to the optical path.
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 X-axis and Y-axis deviations caused by handshakes, achieving a lightweight, slim, and miniaturized design while ensuring the optical performance and durability of the lens module, preventing permanent damage from impacts and maintaining image quality.
Implementation Method 1
the coil and a magnet to drive a lens to move back and forth along a photo axis for image-capturing
Implementation Method 2
a suspension module to suspend the movable part
Implementation Method 3
the optical compensation mechanism, usually called as an optical anti-shake mechanism, is to add a shake-compensation module upon the lens module or the image-compensation module
Data Source
AI summary
An optical image stabilizer furnished in an image sensing module includes a casing having a compartment, a fixing plate fixed to the casing, a movable part supporter, a movable part connected to the movable part supporter, a coil, at least one magnet, at least one compensation module, a suspension module connecting the movable part, and a base. The coil furnished outside the movable part is corresponding to the magnet located on the inner surface of the movable part supporter. The base to support the casing is located on the image sensing module. The vertical distance between the compensation module and the image sensing module is larger than that between the coil and the image sensing module. A light inlet side of the movable part is near to the compensation module, while a light outlet side thereof is near to the image sensing module.