Laser fence

A laser fence or laser wall is a mechanism to detect objects passing the line of sight between the laser source and the detector.[1][2] Stronger lasers can be used to injure entities passing the laser beam.[3] In fiction, laser fences may have the ability to stop intruders by blocking or injuring them.

  1. ^ Steele, Richard K; Roudabush, Douglas E (23 July 1974). "Laser fence" – via United States Patent and Trademark Office.
  2. ^ Thomas Petruzzellis (1994). The Alarm, Sensor & Security Circuit Cookbook. McGraw Hill Professional. p. 145. ISBN 978-0-8306-4314-1.
  3. ^ Guth, Robert A (2009). "Rocket Scientists Shoot Down Mosquitoes With Lasers". The Wall Street Journal.