BERKELEY SENSOR & ACTUATOR CENTER
UC BERKELEY UC DAVIS
User: Guest |  Site Map |  My BSAC Profile
HOME  PROJECTS  THRUSTS  PUBLICATIONS  ABOUT BSAC  DIRECTORY  ALUMNI  FOR BSAC RESEARCHERS  EVENTS CALENDAR  SECURE LOGIN
Wu
     
 Lee
 Lin
 Wu
 

BPN563: LIDAR (Light Detection And Ranging) with MEMS

Project ID BPN563
Website
Start Date Thu 2010-Feb-04 15:12:12
Last Updated Tue 2010-Aug-31 17:12:09
Abstract Two-dimensional imaging is limited in that it cannot provide depth perception. One can view objects in the distance, but cannot determine how far away these images are. Three-dimensional imaging, such as RADAR, can accomplish this, but radio wavelengths are too long to provide detailed resolution. LIght Detection And Ranging (LIDAR) uses optical wavelengths, providing easily four orders of magnitude better resolution, allowing the imaging of sub-millimeter detail or better. However, the conventional LIDAR method employs short optical pulses that need high-speed, 2-D photodetection, which is prohibitively expensive. Our method uses a low-speed swept laser wavelength that creates a time delay proportional to the distance of the imaged objects. When heterodyned with a reference beam, the time delay creates a wavelength difference which will be proportional to the object distance. This beat frequency can be detected with much slower speed 2-D detector arrays, drastically reducing the system cost and opening up applications in the consumer market.
Status Continuing
Funding Source Industry
IAB Research Area Physical Sensors & Devices
Researcher(s) Erwin K. Lau
Advisor(s) Ming C. Wu, Bernhard E. Boser
Detailed Information
Secure Access

Private Abstract
Research Report
Poster
Summary Slide
Can’t view video click here
Active Feedback (or Request for Response)

 

  • Copyright Notification: All papers downloaded from this site are © University of California or the publisher, all rights reserved. Contact the BSAC Webmaster for permission related to copyrighted materials.
  • Links on these pages to commercial sites do not represent endorsements by UC or its affiliates.
  • Privacy Policy
  • Contact Us

   webmaster@bsac.eecs.berkeley.edu
  User logged in as: Guest
  User Idle since: September 15, 2014, 2:32 am