Lens Holder Circuit Integration for Compact Optical Actuation
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Solution Overview
Problem
The miniaturization of electronic devices with camera functions poses challenges in designing optical component driving mechanisms, including difficulties in designing the driving mechanism, poor reliability, and insufficient lens driving force, which affect autofocus and optical image stabilization.
Innovation Solution
An optical component driving mechanism is designed with a holder and a driving assembly, where the first circuit assembly is embedded within the holder, allowing for miniaturization and improved magnetic interference management, and includes a sensing assembly to control movement, elastic components for stability, and adhesive components for secure optical component fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical component driving mechanism is miniaturized to meet electronic device size requirements, then the device size is reduced, but the lens driving force becomes insufficient and reliability deteriorates
Solution Approach 1:
The circuit assembly is integrated directly onto the holder body, merging the support structure and electrical connection functions into a single component. This eliminates the need for separate circuit boards or connection components, reducing overall mechanism size while maintaining electrical reliability through direct mechanical and electrical integration.
Solution Approach 2:
The circuit assembly is nested within the holder structure, with circuit components arranged in layers or embedded within the holder body. This nesting approach maximizes space utilization, allowing the driving mechanism to be miniaturized without compromising the structural integrity or electrical connection reliability.
2Device complexity
If the circuit assembly is disposed outside the holder, then the holder structure is simple, but the overall device size increases and magnetic interference management becomes difficult
Solution Approach 1:
The holder and circuit assembly are merged into a single integrated structure. The holder body serves dual purposes: providing mechanical support for the optical component and housing the circuit assembly. This integration simplifies the overall structure by eliminating separate components while reducing the total device volume through functional consolidation.
Solution Approach 2:
The holder is designed with multi-functionality, serving as both a mechanical support structure and an electrical circuit carrier. By incorporating circuit mounting surfaces, connection terminals, and magnetic shielding elements directly into the holder body, the structure achieves multiple functions without increasing complexity, thereby reducing overall device size.
3Ease of manufacture
If the circuit assembly is disposed outside the holder, then the circuit assembly is easy to manufacture, but magnetic interference management becomes difficult and reliability decreases
Solution Approach 1:
The circuit assembly is merged with the holder structure, allowing magnetic shielding materials to be integrated directly into the holder body surrounding the circuit components. This proximity-based integration enables effective magnetic interference management through localized shielding while maintaining manufacturing simplicity by using the same fabrication processes for both structural and circuit components.
Solution Approach 2:
Magnetic shielding materials are introduced as intermediary elements between the circuit assembly and external magnetic sources. These shielding layers, integrated into the holder structure, act as mediators that block or redirect magnetic field lines, protecting the circuit components from interference while allowing the compact integrated design to be manufactured using standard processes.
4Ease of manufacture
If the holder structure is simplified, then manufacturing is easier, but the driving force for the lens becomes insufficient
Solution Approach 1:
The driving mechanism components are merged with the holder structure, with the circuit assembly and driving elements integrated directly into the holder body. This integration allows for optimized force transmission pathways while maintaining structural simplicity, as the holder itself becomes part of the driving mechanism rather than just a passive support structure.
Solution Approach 2:
The holder is designed using composite material structures that combine materials with different mechanical properties. By incorporating high-strength, high-stiffness materials in critical load-bearing regions while using lighter materials in non-critical areas, the holder maintains sufficient driving force transmission capability while keeping the overall structure simple and manufacturable.
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 configuration enables effective autofocus and optical image stabilization while addressing the challenges of miniaturization, improving reliability, and enhancing the driving force, thus achieving efficient and precise optical component movement.
Implementation Method 1
The holder is movably connected to the fixed portion via the first elastic component and the second elastic component
Implementation Method 2
The driving assembly is configured to drive the holder to move relative to the fixed portion
Data Source
AI summary
An optical component driving mechanism is provided, including a holder, a fixed portion, a driving assembly, and a first circuit assembly. The holder is used to connect the optical component. The holder is movable relative to the fixed portion. The driving assembly is used to drive the holder to move relative to the fixed portion. The first circuit assembly is fixedly disposed on the holder. The first circuit assembly is electrically connected to the driving assembly.