Dual Lens Drive Structure for Low-Interference Dual Camera Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dual camera modules with adjacent camera modules suffer from magnetic interference and flare phenomena due to unnecessary light reflection, leading to suboptimal performance and increased power consumption.
Innovation Solution
A dual lens drive device with a VCM structure that integrates magnets and reduces the number of driver ICs, using a single actuator to minimize magnetic interference and power consumption, and incorporates a black mask to prevent flare by aligning infrared filters accurately during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two individual camera modules are adjacently arranged, then dual camera functionality is achieved, but mutual magnetic interference is generated
Solution Approach 1:
The patent combines two separate camera modules into a single integrated lens drive device that serves both camera functions. By merging the VCM structures and sharing common components including magnets and driver ICs, the device eliminates magnetic interference between adjacent modules while maintaining dual camera functionality.
Solution Approach 2:
The integrated lens drive device performs multiple functions simultaneously - it drives both the first and second camera lenses while sharing common magnetic components and control circuits. This multi-functional design reduces the number of separate driver ICs needed and eliminates inter-module magnetic interference.
2Reliability
If a VCM structure with multiple magnets is used for dual OIS, then optical image stabilization is achieved, but magnetic interference increases
Solution Approach 1:
The patent merges the VCM structures of two camera modules into a single integrated system where magnets are strategically positioned to provide OIS for both lenses. By combining the magnetic drive systems and sharing common magnets, the device reduces total magnetic interference while maintaining dual OIS functionality.
3Ease of operation
If multiple driver ICs are used for dual camera control, then individual lens control is achieved, but device complexity and power consumption increase
Solution Approach 1:
The patent designs a single driver IC that controls both the first and second lenses, making the driver IC multi-functional. This universal controller reduces the total number of driver ICs from two to one, simplifying the device while maintaining individual lens control capability through integrated circuit design.
4Ease of manufacture
If individual camera modules are used, then manufacturing flexibility is maintained, but tuning complexity increases
Solution Approach 1:
The patent integrates two camera modules into a single lens drive device, combining previously separate tuning processes into one unified tuning operation. This merging reduces the overall tuning complexity while maintaining manufacturing flexibility through modular design principles.
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 magnetic interference, simplifies tuning, and decreases power consumption while enhancing the reliability and performance of dual camera modules by preventing flare and improving alignment precision.
Implementation Method 1
a dual lens drive device having a structure configured to prevent a mutual interference between magnets in a VCM (Voice Coil Motor) structure for dual OIS purpose
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present embodiment relates to a dual lens drive device that comprises: a housing; a first bobbin which is disposed to move in a first direction inside the housing; a second bobbin which is disposed to move in the first direction inside housing and is spaced apart from the first bobbin; a first coil which is disposed on the first bobbin; a second coil which is disposed on the second bobbin; a magnet which is disposed in the housing and faces the first coil and the second coil; a base which is disposed below the housing; a substrate which comprises a circuit member having a third coil disposed to face the magnet between the housing and the base; and a support member which movably supports the housing with respect to the substrate, wherein the housing is integrally formed.