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2. Retroreflective sheeting - Wikipedia

   en.wikipedia.org/wiki/Retroreflective_sheeting

   The special effects technique of front projection uses retroreflective screens to create false backgrounds for scenes shot in studios. Front projection was used in 2001: A Space Odyssey during the "Dawn of Man" sequence. Other films that have used front projection techniques include Silent Running, Where Eagles Dare and Superman.

3. Silver screen - Wikipedia

   en.wikipedia.org/wiki/Silver_screen

   Essentially, the screen only reflects the specific shades of red, green, and blue output by a trichromatic video projector, and absorbs the remainder. Therefore, the projected image is reflected normally, but other light is not. In doing so, the black level on the screen is maintained. Mostly used with digital projectors in non-commercial settings.

4. Projection screen - Wikipedia

   en.wikipedia.org/wiki/Projection_screen

   Switchable projection screens can be switched between opaque and clear. In the opaque state, projected image on the screen can be viewed from both sides. It is very good for advertising on store windows. Inflatable movie screen. Mobile screens usually use either a pull-down screen on a free stand, or pull up from a weighted base.

5. Lenticular fabric - Wikipedia

   en.wikipedia.org/wiki/Lenticular_fabric

   An example of a lenticular fabric sheet that changes from a blue background with white stars to a white background with red stars. A lenticular fabric is a lattice-like arrangement of lens-shaped materials formed into a thin layer. [1] When the surface of the fabric is smooth, it often has a reflective and light-distorting appearance.

6. Retroreflector - Wikipedia

   en.wikipedia.org/wiki/Retroreflector

   In a form of 3D display; where a retro-reflective sheeting and a set of projectors is used to project stereoscopic images back to user's eye. The use of mobile projectors and positional tracking mounted on user's spectacles frame allows the illusion of a hologram to be created for computer generated imagery. [30] [31] [32]

7. Active camouflage - Wikipedia

   en.wikipedia.org/wiki/Active_camouflage

   Left: The cloth seen without a special device. Right: The same cloth seen through the half-mirror projector part of the Retro-Reflective Projection Technology. In 2003 researchers at the University of Tokyo under Susumu Tachi created a prototype active camouflage system using material impregnated with retroreflective glass beads. The viewer ...