Reflecting Module OIS Mechanism for Compact Camera Design
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Solution Overview
Problem
The challenge is to miniaturize camera modules in portable electronic devices while maintaining optical image stabilization (OIS), autofocusing, and zoom functions, which requires reducing the size and weight of components without compromising performance, and minimizing power consumption.
Innovation Solution
A reflecting module for OIS is designed with a housing, a driving holder, and a driving plate that includes ball bearings and a magnetic system, allowing the driving holder to move linearly or rotate, changing the light path without moving the lens barrel, thus reducing the overall size and weight, and utilizing a magnetic system for efficient movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lens barrel and holder are directly moved for OIS, then image stabilization function is achieved, but the weight and required driving force increase, resulting in higher power consumption
Solution Approach 1:
The patent extracts the OIS function from the lens barrel movement system and implements it separately through a reflecting module. The reflecting module includes a reflecting member that can be moved independently to adjust light paths, separating the stabilization function from the heavy lens barrel movement, thereby reducing the required driving force and power consumption.
Solution Approach 2:
The patent replaces the traditional mechanical OIS system (moving lens barrel) with an optical path adjustment system using a reflecting module. The reflecting member redirects light paths to achieve stabilization without moving the entire lens barrel, substituting a lighter optical mechanism for a heavier mechanical one.
2Reliability
If the lens barrel and holder are directly moved for OIS, then image stabilization function is achieved, but the weight of the OIS system increases
Solution Approach 1:
The patent extracts the OIS function from the lens barrel movement system and implements it separately through a reflecting module. The reflecting module includes a reflecting member that can be moved independently to adjust light paths, separating the stabilization function from the heavy lens barrel movement, thereby reducing the required driving force and power consumption.
Solution Approach 2:
The patent replaces the traditional mechanical OIS system (moving lens barrel) with an optical path adjustment system using a reflecting module. The reflecting member redirects light paths to achieve stabilization without moving the entire lens barrel, substituting a lighter optical mechanism for a heavier mechanical one.
3Adaptability or versatility
If the camera module structure is made more complicated to include OIS and zoom functions, then functionality is improved, but the size of the camera module increases
Solution Approach 1:
The patent integrates the reflecting module within the existing camera module structure, nesting the OIS functionality inside the housing that already contains the lens and image sensor. The reflecting module is positioned to redirect light paths without requiring additional external space, allowing multiple functions (OIS, zoom, focusing) to coexist in a compact arrangement.
Solution Approach 2:
The patent uses a reflecting member that can rotate around an axis perpendicular to the optical axis, introducing rotational movement in a different dimension. This allows the OIS function to be achieved through angular adjustment of the reflecting member rather than linear movement of the lens barrel, enabling compact integration within the camera module housing.
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 solution enables the miniaturization of camera modules in portable devices by reducing the thickness and weight of the OIS system, improving zoom performance, and significantly lowering power consumption while maintaining image stabilization and focusing capabilities.
Implementation Method 1
The driving plate may include one or more first ball bearing sets including first ball bearings aligned in one axial direction on a surface of the driving plate facing the housing
Implementation Method 2
a driving part configured to provide driving force to the driving holder to move the driving holder
Data Source
AI summary
A reflecting module for optical image stabilization (OIS) includes: a housing including an internal space; a driving holder including a reflecting member and supported by an inner wall of the housing in a state in which a driving plate is fitted between the driving holder and the housing so that the driving holder is provided in the internal space; and a driving part configured to provide driving force to the driving holder to move the driving holder. The driving plate is linearly movable along one axis approximately perpendicular to an optical axis or is rotatable around the one axis with respect to the housing. The driving holder is linearly movable along the one axis or is rotatable around the one axis with respect to the driving plate.