Optical Component Drive Structure for Stable OIS and Autofocus
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Solution Overview
Problem
Electronic devices with lens modules often experience image blurriness due to shaking during camera use, necessitating improved optical image stabilization and auto-focusing capabilities.
Innovation Solution
An optical component driving mechanism with a first movable portion, fixed portion, circuit member, and reinforcing components, utilizing magnetic components and flexible printed circuits to stabilize and focus optical components, enhanced by a bracket member embedded in the base for structural strength and reduced magnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circuit member is disposed on the fixed portion to transmit electrical signals, then electrical connection is achieved, but the circuit member may deform under magnetic force affecting signal transmission
Solution Approach 1:
A reinforcing component is introduced as an intermediary element between the circuit member and the magnetic component. This reinforcing component bears the magnetic force and prevents it from deforming the circuit member, thereby maintaining signal transmission reliability while protecting the circuit member's structural stability.
Solution Approach 2:
The reinforcing component is pre-installed on the fixed portion at the location where magnetic force will act. This preliminary structural reinforcement ensures that when the magnetic component generates magnetic force, the circuit member is already protected from deformation, maintaining both electrical connection reliability and shape stability.
2Measurement precision
If the lens module is made movable to achieve auto-focusing and image stabilization, then optical performance is improved, but mechanical deformation affects movement precision
Solution Approach 1:
The lens module system is divided into a fixed portion (containing the reinforcing component and circuit member) and a movable portion (containing the optical component). This segmentation allows the fixed portion to provide stable electrical and structural support while the movable portion achieves precise optical adjustments without being constrained by the stability requirements of the fixed structures.
Solution Approach 2:
The reinforcing component acts as a mediator that isolates the movable portion from unwanted mechanical interference. By strengthening the fixed portion's resistance to magnetic force, it ensures that only the intended movable portion moves, maintaining mechanical structure stability while enabling precise optical focusing and stabilization.
3Force
If a magnetic component is used to drive the movable portion, then driving force is provided, but magnetic force causes deformation of the circuit member
Solution Approach 1:
The reinforcing component serves as a mediator that intercepts and bears the magnetic force generated by the magnetic component. This prevents the magnetic force from directly acting on the circuit member, allowing the driving force to be effectively transmitted to the movable portion while protecting the circuit member's shape stability.
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
Enhances optical image stabilization and auto-focusing performance by minimizing mechanical deformation and electromagnetic interference, allowing for precise movement and improved image quality.
Implementation Method 1
The first driving assembly includes a magnetic component. The magnetic component is disposed on the retaining wall.
Data Source
AI summary
An optical component driving mechanism is provided. The optical component driving mechanism includes a first movable portion, a fixed portion, a first circuit member, and a first reinforcing component. The first movable portion is connected to the first optical component. The first optical component has a first optical axis. The first movable portion is movable relative to the fixed portion. The first circuit member is disposed on the fixed portion, and the first circuit member is configured to transmit electrical signals. The first reinforcing component is disposed on the first circuit member.