Optical Module Suspension for Dual-Frequency Vibration Damping
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Solution Overview
Problem
Increasing shock absorption capability of optical systems in electronic devices, particularly in vehicles, is challenging due to the incorporation of coils and magnets for focus adjustment and Optical Image Stabilization (OIS).
Innovation Solution
An optical system incorporating a fixed part, a movable part, and a flexible member, such as a steel cable or spring, connected between them to suppress vibrations at a first frequency, combined with an active damping mechanism using magnets and coils to suppress vibrations at a second frequency, enhancing shock absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coils and magnets are used for focus adjustment and OIS, then optical functionality is improved, but shock absorption capability deteriorates
Solution Approach 1:
The optical system is divided into separate functional modules: a fixed part containing the coil assembly for OIS and focus adjustment, and a movable part containing the image sensor that can independently move for shock absorption. This segmentation allows each part to perform its specific function without interfering with the other, resolving the contradiction between optical functionality and shock absorption capability
Solution Approach 2:
A flexible support structure acts as an intermediary between the fixed part and movable part, providing both mechanical support and vibration isolation. This intermediary element allows the image sensor to move independently for shock absorption while maintaining the structural integrity needed for optical functionality
2Reliability
If a flexible member is added to suppress vibration, then shock absorption is improved, but device complexity increases
Solution Approach 1:
The flexible support structure serves multiple functions simultaneously: it provides mechanical support for the image sensor, enables independent movement for shock absorption, and acts as a vibration isolation element. By combining multiple functions into a single component, the design achieves improved shock absorption without proportionally increasing device complexity
Solution Approach 2:
The flexible support structure utilizes flexible materials and designs that can deform elastically to absorb vibrations. This approach provides effective vibration suppression through material properties and structural design rather than adding complex mechanical damping mechanisms, thereby limiting the increase in device complexity
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 system effectively suppresses vibrations at both high and low frequencies, improving safety and stability of the optical system when used in vehicles by integrating passive and active damping mechanisms.
Implementation Method 1
The flexible member connects the movable part to the fixed part for suppressing the vibration of the optical system at a first frequency
Implementation Method 2
the flexible member comprises a steel cable, a spring or a combination thereof
Implementation Method 3
an active damping mechanism using magnets and coils to suppress vibrations at a second frequency
Data Source
AI summary
An optical system is provided, including an optical module, a fixed part, a movable part for holding an optical module, and a flexible member. The flexible member movably connects the movable part to the fixed part to suppress the vibration of the optical system at a first frequency.