Optical Module Magnetic Layout to Prevent Tilt and Deflection
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Solution Overview
Problem
Conventional optical modules with driving components face issues of tilting and deflection due to an excessive distance between the center of mass and the center of rotation, making precise adjustment of optical elements challenging.
Innovation Solution
The optical module incorporates a first and second driving assembly with magnetic elements and coils, along with stabilizing and structural reinforcement elements, to precisely move optical elements while minimizing magnetic interference and absorbing impacts, thereby maintaining stability and preventing tilting or deflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If driving components are arranged in the direction of light entry/exit, then the optical element can be driven to move, but the distance between the center of mass and center of rotation becomes excessively large, causing tilting or deflection
Solution Approach 1:
The patent transitions from a one-dimensional arrangement (driving component in the light path direction) to a two-dimensional arrangement (driving component positioned laterally adjacent to the optical element). This dimensional change allows the driving component to remain close to the optical element's center of rotation, eliminating tilting and deflection while preserving driving capability.
2Manufacturing precision
If multiple driving components are added to achieve precise positioning, then positioning accuracy improves, but the device complexity increases
Solution Approach 1:
The patent achieves precise positioning by optimizing the parameters of a single driving component (magnet size, coil current, winding configuration) rather than adding multiple driving components. This parameter optimization allows one driving component to provide sufficient driving force and positioning precision, reducing overall device complexity.
3Volume of moving object
If the optical module is miniaturized, then the device size reduces, but the driving force and stability may be compromised
Solution Approach 1:
The patent employs composite material strategies by combining ferromagnetic materials with specific coil configurations to maximize driving force density. The magnet-coil composite structure provides high driving force in a compact form factor, enabling miniaturization without compromising driving capability.
Solution Approach 2:
The patent concentrates the driving force generation in the local region where the magnet and coil are positioned adjacent to each other near the optical element. This localized high-density force generation allows the rest of the module to be miniaturized while maintaining sufficient driving force where needed.
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 achieves precise adjustment of optical elements, reduces noise and magnetic interference, and stabilizes the optical module, ensuring accurate positioning and miniaturization while absorbing impacts.
Implementation Method 1
the first driving assembly includes a first magnetic element and a first coil
Implementation Method 2
the first driving assembly includes a first magnetic element and a first coil
Data Source
AI summary
An optical module is disclosed. The optical module includes a first fixed part, a first movable part, and a first driving assembly. The first fixed part includes a first bottom. The first movable part is connected to a first optical element. The first driving assembly drives the first movable part to move relative to the first fixed part.