[attachment=9542]
OPTICAL CAMOUFLAGE
What is Optical Camouflage ?
• OPTICAL CAMOUFLAGE is a kind of active camouflage which completely envelopes the wearer. Camouflage means to blend with the surroundings.
• It is the method which allows an organism or object to remain indiscernible from the surrounding environment. by use of panels or coatings capable of altering their appearance, colour, luminance and reflective properties.
• Optical camouflage would only provide invisibility in the visible portion of the spectrum.
How does it work ?
 Creating complete optical camouflage across the visible light spectrum would require a coating or suit covered in tiny cameras and projectors
 These are programmed to gather visual data from a multitude of different angles and project the gathered images outwards in an equally large number of different directions to give the illusion of invisibility from all angles.
 For a surface subject to bending like a flexible suit, a massive amount of computing power and embedded sensors would be necessary to continuously project the correct images in all directions.
 For this we would certainly require sophisticated nanotechnology, as our computers, projectors, and cameras are not yet miniaturized enough to meet these conditions.
 Secret of Invisibility Cloak
• The cloak that enables optical camouflage to work is made from a special material known as Retro-reflective material.
• A retro-reflective material is covered with thousands and thousands of small beads. When light strikes one of these beads, the light rays bounce back exactly in the same direction from which they came.
 Applications of Optical Camouflage
AUGMENTED STEREOSCOPIC VISION IN SURGERY
Doctors performing surgery could use optical camouflage to see through their hands and instruments to the underlying tissue so making the complicated surgeries a bit better.
COCKPIT FLOORS
Pilots landing a plane could use this technology to make cockpit floors transparent with micro reflectors. This would enable them to see the runway and the landing gear simply by glancing down.
 Applications of Optical Camouflage
TRANSPARENT REAR HATCH
Drivers backing up cars could have a quick glance backward through a transparent rear hatch would make it easy to know when to stop.
STEALTH TECHNOLOGY
Stealth means ‘low observable’. Its basic idea is to ‘blend’ in with the background and is used mainly for military purpose. Stealth Technology is used in the construction of mobile military systems such as aircrafts and ships to significantly reduce their detection by enemy, primarily by an enemy RADAR.
 Latest Invention
Conclusion
• A lot of interesting thing have been done and already we have seen that anyone can be almost invisible with this technology.
• But the future promises us a lot more.
• Research work is going on and soon we will have even more astonishing results.