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Laser fence

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

Description

A laser fence mechanism detects objects passing the line of sight between a laser source and detector. Stronger lasers can be used to injure entities passing the laser beam, as in a mosquito laser. Fictional uses of laser fences often extend the concept so that fences may have the ability to prevent intruders by blocking or injuring them.

Agricultural usage

Lasers are used to keep birds from eating blueberries by being perceived as a predator. The European Commission is funding research into a laser fence to scare away rats and other pests.

Border fences

The Indian Border Security Force (BSF) has implemented a laser wall system—called LASER Wall—along some parts of its border to stop intrusion.

In fiction

Films

In the 1992 film Fortress, prisoners are kept secured by laser walls. In the 1995 film Congo, a laser fence is used as part of other high-tech equipment to defend a camp against vicious gorillas.

Videogames

This section may contain excessive or irrelevant examples. Please help improve the article by adding descriptive text and removing less pertinent examples. (September 2018)

Laser walls appear frequently in videogames. The concepts of these fictional fences can be compared to other concepts like tractor or repulsor beams and force fields.

See also

Notes

  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.
  4. ^ Holden, Stephen (4 September 1993). "Review/Film; A Futuristic Prison That Demands Escape". The New York Times. Retrieved 11 May 2018.
  5. ^ Ingenito, Vince (19 August 2016). "Deus Ex: Mankind Divided Review".
  6. ^ "Monaco: What's Yours Is Mine (Game) - Giant Bomb". Giant Bomb.
  7. ^ "Short Supply - Sly Cooper: Thieves in Time Wiki Guide - IGN". IGN.
  8. ^ "Combining tower defense with a shooter - game design implications". 16 March 2018.
  9. "Laser bird deterrent increases crop revenue by 33%". www.laserfocusworld.com. 26 October 2017.
  10. "Laser fence aims to protect crops from rats and other pests". www.laserfocusworld.com. 28 October 2016.
  11. "LASER RAT FENCE wins €1.7m European Commission funds". The Register.
  12. Bapat, Varsha; Kale, Prasad; Shinde, Vijaykumar; Deshpande, Neha; Shaligram, Arvind (2017). "WSN application for crop protection to divert animal intrusions in the agricultural land". Computers and Electronics in Agriculture. 133: 88–96. doi:10.1016/j.compag.2016.12.007. ISSN 0168-1699.
  13. "'Laser walls' activated along India-Pakistan border to plug gaps in vigil - Times of India". The Times of India. 28 April 2016.
  14. Toorek, Derick (20 August 2018). Congo (1995) - shootout scene in the woods (Videotape) – via YouTube.
  15. Rudolf Kremers (21 October 2009). Level Design: Concept, Theory, and Practice. CRC Press. pp. 362–. ISBN 978-1-4398-7695-4.
  16. "Laser Fence (Object) - Giant Bomb". Giant Bomb.
  17. Hayley Camille; James Floyd Kelly (16 October 2015). The Ultimate Player's Guide to Skylanders Trap Team (Unofficial Guide). Pearson Education. pp. 8–. ISBN 978-0-13-421619-5.
  18. "Chapter 8: Test Chamber 12 - Portal 2 Walkthrough". www.thonky.com. Retrieved 11 May 2018.
  19. Hamilton, Kirk. "The Mission That Proved Titanfall 2 Was Something Special". Kotaku. Retrieved 11 May 2018.
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