Compact 2D Optical Actuator Layout for High-Fatigue Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing in-plane two-dimensional translational optical actuators are large in size and have a limited high-cycle fatigue life, making them unsuitable for high-resonance-frequency and long-time working conditions.
Innovation Solution
The proposed in-plane two-dimensional translational optical actuator features a compact design with multiple elastic assemblies and electromagnetic drive assemblies placed between a fixed plate and a translational plate, allowing for two-dimensional translation while minimizing space and maximizing fatigue life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magneto resistive drive structure or electroactive polymer drive structure is used, then the actuator can achieve in-plane two-dimensional translational motion, but the drive structures and elastic assemblies occupy a large in-plane space
Solution Approach 1:
The patent combines multiple drive assemblies and elastic assemblies into a compact integrated structure where the drive assemblies are disposed between the fixed plate and translational plate rather than around the periphery. This merging of components into a layered configuration significantly reduces the in-plane space occupied while maintaining the two-dimensional translational motion capability.
Solution Approach 2:
The patent transitions from a planar arrangement of drive structures to a three-dimensional layered structure by disposing drive assemblies between the fixed plate and translational plate. This vertical stacking approach utilizes the z-dimension to reduce the footprint in the x-y plane, achieving compact in-plane dimensions while preserving full two-dimensional motion capability.
2Ease of operation
If magneto resistive drive structure is used, then the actuator can achieve in-plane two-dimensional translational motion, but the drive force is relatively small
Solution Approach 1:
The patent employs multiple drive assemblies (at least two) working in coordination to generate sufficient drive force for high-resonance-frequency operation. By combining the forces from multiple electromagnetic drive assemblies disposed at different locations between the plates, the system achieves both the required force magnitude and the high-frequency response capability.
3Ease of operation
If electroactive polymer drive structure is used, then the actuator can achieve in-plane two-dimensional translational motion, but the high-cycle fatigue life has a significant gap for high-resonance-frequency and long-time working conditions
Solution Approach 1:
The patent replaces electroactive polymer drive structures with electromagnetic drive assemblies consisting of drive coils and magnets. This substitution eliminates the high-cycle fatigue issues inherent in electroactive polymers while maintaining the two-dimensional translational motion capability. The electromagnetic system provides superior reliability for high-resonance-frequency and long-time working conditions.
4Volume of stationary object
If the actuator size is minimized for optical system miniaturization, then the optical system volume is reduced, but the space for arranging drive structures becomes limited
Solution Approach 1:
The patent utilizes the vertical dimension by disposing drive assemblies between the fixed plate and translational plate, converting a two-dimensional planar layout into a three-dimensional layered structure. This approach minimizes the in-plane footprint while providing sufficient space for all necessary drive and elastic assemblies, enabling overall optical system miniaturization without compromising actuator functionality.
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 design achieves a significant reduction in size and an extended high-cycle fatigue life, enabling the actuator to handle high-frequency and long-duration operations effectively, while also providing an efficient pathway for electric signaling and adjustable resonance frequency.
Implementation Method 1
the j electromagnetic drive assemblies are disposed in a plane in two different directions, and used to drive the translational plate to move relative to the fixed plate within a plane where the translational plate is located in two different directions
Implementation Method 2
i elastic assemblies located between the fixed plate and the translational plate and with two ends connected to the fixed plate and the translational plate respectively
Data Source
AI summary
The present disclosure relates to an in-plane two-dimensional translational optical actuator. The in-plane two-dimensional translational optical actuator includes a fixed plate, a translational plate, i elastic assemblies located between the fixed plate and the translational plate and with two ends connected to the fixed plate and the translational plate respectively, and j electromagnetic drive assemblies fixed between the fixed plate and the translational plate. Each elastic assembly is composed of elastic elements of the same or different quantities, and at least one elastic assembly in the i elastic assemblies has two or more elastic elements. The j electromagnetic drive assemblies are disposed in a plane in two different directions, and used to drive the translational plate to move relative to the fixed plate within a plane where the translational plate is located in two different directions, so as to achieve two-dimensional translation of the translational plate.