MEMS Scanning Mirror for Optical Base Station Jitter Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical base stations experience jitter effects and reduced scanning accuracy due to rotor offset and counterweight issues, making them bulky and difficult to miniaturize for immersive virtual reality applications.
Innovation Solution
The use of a microelectromechanical systems (MEMS) scanning mirror replaces traditional rotors, providing accurate and controlled light beam oscillation with reduced size and weight, thereby minimizing jitter and enhancing scanning precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional rotors are used for light beam scanning, then the scanning function is achieved, but jitter effect occurs and scanning accuracy is reduced
Solution Approach 1:
The patent replaces the traditional mechanical rotor system with a MEMS (Micro-Electro-Mechanical Systems) scanning mirror. This substitution eliminates the mechanical offset and counterweight issues inherent in rotor systems, thereby reducing jitter effect and improving scanning accuracy. The MEMS mirror achieves light beam deflection through electrostatic actuation rather than mechanical rotation.
Solution Approach 2:
The patent changes the fundamental operating parameters of the scanning system by transitioning from high-speed mechanical rotation (rotors) to controlled electrostatic deflection (MEMS). This parameter change enables precise control of the light beam angle without the mechanical limitations and instabilities associated with rotating components.
2Adaptability or versatility
If two rotors are adopted for two-dimensional scanning, then scanning coverage is improved, but the volume of the base station increases
Solution Approach 1:
The patent merges the functions of multiple rotors into a single MEMS scanning mirror that can achieve two-dimensional scanning through sequential deflection in two orthogonal directions. This consolidation integrates multiple scanning functions into one compact component, significantly reducing the overall base station volume while maintaining full two-dimensional scanning capability.
Solution Approach 2:
The patent achieves two-dimensional scanning by adding temporal sequencing to sequential single-axis deflections of the MEMS mirror, rather than requiring simultaneous multi-rotor mechanical systems. This dimensional approach to control space enables compact design while maintaining full scanning coverage.
3Stability of the object's composition
If rotors with counterweights are used, then rotational balance is attempted, but gravity and counterweight issues cause jitter and reduce reliability
Solution Approach 1:
The patent eliminates the mechanical counterweight system entirely by replacing the rotor with a MEMS scanning mirror. This substitution removes the source of gravitational and counterweight-induced jitter, achieving stable operation without mechanical balance complications.
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 MEMS scanning mirror improves optical scanning accuracy, reduces the overall volume of the base station, and allows for more compact and reliable virtual reality systems with reduced power consumption and assembly errors.
Implementation Method 1
The first MEMS scanning mirror is disposed on an optical path of the light beam L10, is configured to reflect the light beam L10 so that the light beam L10 performs spatial scanning
Data Source
AI summary
An optical base station including a base, a light source and a first MEMS scanning mirror is provided. The light source is disposed on the base for providing a light beam. The first MEMS scanning mirror is disposed at an optical path of the light beam to reflect the light beam for spatial scanning.