Optical Element Drive Assembly With Embedded Circuit for Stable Autofocus
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Solution Overview
Problem
Existing optical element driving mechanisms in electronic devices, such as smartphones, are prone to causing blurry images or videos due to shock or vibration, necessitating a mechanism for auto focus to maintain image or video quality.
Innovation Solution
An optical element driving mechanism comprising a bottom, a movable part, a driving assembly, a first circuit assembly, and a second circuit assembly, where the driving assembly, comprising magnetic elements and coils, drives the movable part to move along an optical axis, and a sensing assembly senses the movement to adjust the optical element's position, ensuring alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical element driving mechanism is equipped with auto focus functionality, then image or video quality is improved, but the device complexity increases due to additional driving assemblies and circuit assemblies
Solution Approach 1:
The patent combines the first circuit assembly and second circuit assembly into a single integrated circuit board structure. The first circuit assembly includes a first circuit board with a first surface and a second surface, and the second circuit assembly is integrated onto this same circuit board, thereby reducing the number of separate components and simplifying the overall device structure while maintaining auto focus functionality
Solution Approach 2:
The circuit board serves multiple functions by integrating both the first circuit assembly (connected to the driving assembly) and the second circuit assembly (connected to the sensing assembly) onto a single board. This multi-functional design reduces device complexity while enabling both driving and sensing operations for auto focus
2Speed
If the driving assembly and sensing assembly are integrated closely, then the response speed for auto focus is improved, but the manufacturing precision requirements increase due to precise electrical connection needs
Solution Approach 1:
The patent merges the first circuit assembly and second circuit assembly onto a single circuit board, which reduces the physical distance between the driving assembly and sensing assembly. This integration improves response speed for auto focus operations while the circuit board design accommodates the precise electrical connections needed through standardized mounting and connection interfaces
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 mechanism effectively reduces the impact of vibrations and shocks, enabling precise auto focus and maintaining high-quality image or video capture by ensuring the optical axis remains aligned, thus preventing blurry images or videos.
Implementation Method 1
a driving assembly, comprising magnetic elements and coils, drives the movable part to move along an optical axis
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a bottom, a movable part, a driving assembly, a first circuit assembly, and a second circuit assembly. The movable part is connected to an optical element with an optical axis. The movable part is movable relative to the bottom. The driving assembly drives the movable part to move relative to the bottom. The first circuit assembly is disposed on the bottom and electrically connected to the driving assembly. The second circuit assembly is electrically connected to the driving assembly. At least part of the second circuit assembly is embedded in and not revealed from the bottom. The driving assembly is electrically connected to the first circuit assembly via the second circuit assembly.