Multi-Axis Actuator for High-Resolution Projection
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Solution Overview
Problem
Current projectors with single-axis or dual-axis actuators can only increase image resolution by 1 to 4 times, limiting the enhancement of projector resolution.
Innovation Solution
An actuator with multiple axes, specifically including a first and second base, frame bodies, optical elements, and driving assemblies, controlled by a controller to swing the optical elements based on multiple actuating axes with distinct frequencies and phase differences, increasing the resolution of the projection device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If single-axis or dual-axis actuators are used, then the device complexity is reduced, but the resolution of the projection device is limited to 1 to 4 times increase
Solution Approach 1:
The actuator is divided into multiple independent driving assemblies (first driving assembly, second driving assembly, etc.), each responsible for a specific actuating axis. This segmentation allows the system to achieve multi-axis control while maintaining modular simplicity, resolving the contradiction between increased resolution requirements and device complexity
Solution Approach 2:
The patent transitions from single-axis or dual-axis actuators to multi-axis actuators by adding more actuating dimensions. This dimensional expansion enables the optical element to swing in multiple directions simultaneously, achieving resolution enhancement beyond the 1 to 4 times limitation of conventional actuators
2Manufacturing precision
If multiple driving assemblies with different frequencies and phase differences are used, then the resolution is increased, but the control system complexity increases
Solution Approach 1:
The controller is designed to universally control multiple driving assemblies with different frequencies and phase differences through a unified control interface. This multi-functional control capability allows the system to manage complex multi-axis operations without proportionally increasing control system complexity
Solution Approach 2:
The patent employs periodic driving signals with specific frequencies and phase differences for each driving assembly. This periodic action enables precise control of the optical element's swinging motion in multiple axes, achieving high resolution through coordinated periodic movements rather than complex continuous control
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 actuator with multiple axes enables the projection device to achieve higher resolution by allowing the optical elements to swing based on multiple axes, thereby increasing the resolution beyond the limitations of single-axis or dual-axis systems.
Implementation Method 1
at least one first driving assembly disposed between the first base and the first frame body... control the at least one first driving assembly to drive the first frame body
Data Source
AI summary
An actuator, a projection device, and a projection method are provided. The projection method includes the following. A first optical element is disposed in a first frame body. At least one first driving assembly is disposed between a first base and the first frame body. A second optical element is disposed in a second frame body. At least one second driving assembly is disposed between a second base and the second frame body. The first driving assembly is controlled by a first signal to drive the first frame body, such that the first optical element reciprocally swing relative to the first base based on a first actuating axis and a second actuating axis. The second driving assembly is controlled by a second signal to drive the second frame body, such that the second optical element reciprocally swing relative to the second base based on a third actuating axis.