Laser fence
From Wikipedia, the free encyclopedia
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.
A laser fence mechanism detects objects passing the line of sight between a laser source and detector.[1] Stronger lasers can be used to injure entities passing the laser beam, as in a mosquito laser.[3] Fictional uses of laser fences often extend the concept so that fences may have the ability to prevent intruders by blocking or injuring them.[4][5][6][7]
Agricultural usage
Lasers are used to keep birds from eating blueberries by being perceived as a predator.[8] The European Commission is funding research into a laser fence to scare away rats and other pests.[9][10][11]
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.[12]
