Laser fence

A laser fence is a mechanism to detect objects passing the line of sight between the laser source and the detector.[1] Stronger lasers can potentially be used to injure someone or something passing the laser beam (see mosquito laser[2]).

Sometimes laser fences are used in fiction with the ability to stop intruders by blocking or injuring them.

The Indian Border Security Force (BSF) has implemented a LASER wall system, called Farheen LASER Wall, along some parts of its border to stop intrusion. [3]

It is a concept used frequently in videogames.[4] The concepts of these fictional fences can be compared to other concepts like tractor or repulsor beams.

Notes

  1. ↑ http://www.freepatentsonline.com/3825916.html accessed 26 Jan 2011
  2. ↑ Guth, Robert A (2009). "Rocket Scientists Shoot Down Mosquitoes With Lasers". Wall St. Journal.
  3. ↑ BSF putting laser wall to fill gaps along Indo-Pak border - timesofindia-economictimes
  4. ↑ Laser Fence (video game concept)
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