Development of MEMS Mirrors for low-cost Lidar used for next-generation self-driving cars
Project Description
MEMS micromirrors are a key technology enabling self-driving cars, automotive head-up displays, and augmented reality headsets like Microsoft Hololens and MEMS confocal microscopes. However, the design and fabrication of practical MEMS micromirrors remains challenging because it requires in the integration of electric engineering, mechanical engineering, optical engineering and MEMS technologies. Laser beam scanning (LBS) systems typically consist of a 2-axis MEMS micromirror, solid-state lasers, photodetectors, optics, and a micromirror control module. For high-resolution imaging, closed-loop feedback control is essential to correlate each pixel with the rotating micromirror's position.

This project aims to design a MEMS mirror with integrated actuators and sensors for real-time synchronous projection. It will also focus on the mechanical packaging using a commercial semiconductor foundry process to achieve excellent performance. The goals are to:
Supervisor
LEE Yi-Kuen
Quota
4
Course type
UROP1000
UROP1100
UROP2100
UROP3100
UROP4100
Applicant's Roles
Successful candidates are expected to work on the design of the mechanical components, electronics, and the corresponding optics for MEMS mirror. Students with mechanical, design, electronics, and optics backgrounds are welcome. Key tasks in this project include the following
• Design a MEMS mirror with sensors and actuators using Matlab/COMSOL/Solidworks,
• Design the mechanical packaging for MEMS mirror,
• Testing of the fabricated MEMS mirror,
• Design and build the experimental setup of a laser scanning system.
Applicant's Learning Objectives
• Understand the fundamental of MEMS fabrication technologies,
• Understand the actuation and sensing mechanism for micro mirror,
• Able to design a MEMS mirror with the required performance,
• Learn about the fundamental principle for laser scanning projection.
Complexity of the project
Challenging