Optical Element Driving Mechanism With Magnetic Locking
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Solution Overview
Problem
Existing optical element driving mechanisms in electronic devices, such as smartphones and digital cameras, face challenges in efficiently and reliably controlling optical elements like shutters or filters, particularly in ensuring precise positioning and locking mechanisms to manage light effectively for image capturing and video recording.
Innovation Solution
The optical element driving mechanism incorporates a first movable part, a fixed assembly, a first driving assembly, a second movable part, a second driving assembly, and a locking assembly, utilizing magnetic elements and coils to drive and position optical elements, along with guiding and elastic elements to ensure precise movement and locking, allowing the optical element to selectively overlap a light path and securely lock into position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a locking assembly is added to fix the movable part at specific positions, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical locking mechanisms with a magnetic field-based locking system. The driving assembly generates magnetic fields that interact with magnetic elements in the movable part, enabling positioning and locking without complex mechanical linkages, thus improving positioning precision while controlling device complexity
Solution Approach 2:
The driving assembly serves multiple functions: it drives the movable part to move between positions and simultaneously provides locking functionality through magnetic field interaction. This multi-functionality eliminates the need for separate locking mechanisms, resolving the contradiction between positioning precision and device complexity
2Reliability
If multiple driving assemblies are used to control different movable parts, then control reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides the driving system into multiple independent driving assemblies, each controlling a specific movable part (first movable part and second movable part). This segmentation allows each assembly to be optimized for its specific function, improving control reliability while keeping each individual assembly relatively simple
Solution Approach 2:
The patent arrangements the first and second driving assemblies in different spatial dimensions and orientations. The first driving assembly operates in one dimensional plane while the second operates in another, allowing independent control of different movable parts without excessive structural 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
This solution enables precise control over optical elements, effectively managing light entry into the camera module, ensuring reliable image capture and preventing separation of locking elements under impact, thus enhancing the functionality and durability of optical modules in electronic devices.
Implementation Method 1
The first driving assembly includes: a first coil; a first magnetic element, corresponding to the first coil
Implementation Method 2
a first winding axis of the first coil is parallel to an extending direction of the first magnetically conductive element
Implementation Method 3
The second driving assembly includes: a second coil; a second magnetic element, corresponding to the second coil
Implementation Method 4
a second winding axis of the second coil is not parallel to an extending direction of the second magnetically conductive element
Data Source
AI summary
The present disclosure provides an optical element driving mechanism, which includes a first movable part, a fixed assembly, a first driving assembly, a second movable part, a second driving assembly and a locking assembly. The first movable part is configured to connect an optical element. The first movable part is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable part to move relative to the fixed assembly, and the second driving assembly is configured to drive the second movable part to move relative to the first movable part and the fixed assembly. The locking assembly is configured to fix the first movable part at a first position relative to the fixed assembly.