Optical Camouflage Technology

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THANDRA PAPARAYA INSTITUTE OF SCIENCE AND TECHNOLOGY Department Of Electronics And Communications (ECE) Subject An Advanced Seminar on… Optical Camouflage Author 1 Munakala .Nagaraju Mail id: tpistece403@gmail.com Contact Number: 7799224496 9966557668 Contact Address Thandra Paparaya Institute Of Science & Technology, Komatapalli, Vizianagaram Dist. ABSTRACT: Imagination is impetus to Creativity, creativity defines Art, art redefines Perfection and Science aims at understanding this perfection by developing Technologies. One such Technology which came into existence is OPTICAL CAMOUFLAGE. The word…show more content…
A projector accomplishes this task by shining a light beam through an opening controlled by a device called an iris diaphragm. An iris diaphragm is made of thin, opaque plates, and turning a ring changes the diameter of the central opening. For optical camouflage to work properly, this opening must be the size of a pinhole. Why? This ensures a larger depth of field so that the screen (in this case the cloak) can be located any distance from the projector. The Combiner: The system requires a special mirror to both reflect the projected image toward the cloak and to let light rays bouncing off the cloak return to the user's eye. This special mirror is called a beam splitter, or a combiner -- a half-silvered mirror that both reflects light (the silvered half) and transmits light (the transparent half). If properly positioned in front of the user's eye, the combiner allows the user to perceive both the image enhanced by the computer and light from the surrounding world. This is critical because the computer-generated image and the real-world scene must be fully integrated for the illusion of invisibility to seem realistic. The user has to look through a peephole in this mirror to see the augmented reality. INVISIBILITY CLOAK SYSTEM: Now let's put all of these components together to see how the invisibility cloak appears to make a person transparent. The diagram below shows the typical

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