WHAT IS POLARISED LIGHT ?
Polarised light is defined as light waves that move in one plane only. Laser light diffuses in a similar manner but unlike BIOPTRON, it consists of only one wavelength. This means that it is monochromatic light, whereas BIOPTRON is polychromatic (emission of multiple wave-lengths or colours). The wavelength of BIOPTRON is between 480 – 3400 nm (nanometres).
A polarised light wave vibrates on only one plane. The light produced by the sun is unpolarised, meaning it is made up of light waves vibrating on many different planes. It can however be transformed into polarised light using a polarising filter. A polarising filter has tiny parallel lines etched into it, a bit like the slats on a set of venetian blinds. This means it will only let light vibrating on a particular plane through. As with old fashioned 3D, the film is recorded using two camera lenses sat side by side. But in the cinema, the two reels of film are projected through different polarised filters. So images destined for viewers’ left eyes are polarised on a horizontal plane, whereas images destined for their right eyes are polarised on a vertical plane. Cinema goers’ glasses use the same polarising filters to separate out the two images again, giving each eye sees a slightly different perspective and fooling the brain into ‘seeing’ Avatar’s planet Pandora as though they were a
Ambient light or the light we see consists of light waves that vibrate in a number of different directions. However, these light waves are often reflected off flat or shiny surfaces. These reflective surfaces concentrate the light causing the vibrations of these light waves to travel in the same direction as opposed to being scattered in a random fashion. These intense uni-directional waves are known as “polarised” light waves. Polarised light waves are many times brighter that non-polarised light and are otherwise known as “glare”.
