AUTOSTEREOSCOPIC 3-D DISPLAY: This schematic illustration shows the concept of an autostereoscopic display with the lucius prism array. When the prism side of the lucius prism array is placed on a mixed image in good alignment, two distinctively different images are seen by the left and right eyes. (b) Pictures taken from the positions of the left (SNUlogo) and right eye (smiley face). (c) Transformation of the printed picture when the flexible lucius prism sheet is bent backward (SNUlogo) and forward (smiley face) while holding the left-hand side firm. The slit area was 4 centimeters by 4 centimeters. Image: Courtesy of the researchers and Nature Communications
Three-dimensional television and the like got a major marketing push nearly two years ago from the consumer electronics and entertainment industries, yet the technology still has major limitations. Whereas glasses-free 3-D on television screens and computer monitors is seen as crucial to generating widespread interest in new consumer electronics, for the most part, viewers still need to wear glasses to experience stereoscopic 3-D images, although glasses-free TVs are starting to hit in Japan.
The use of 3-D sans specs has been much more successful in smaller screens such as smartphones and portable gaming devices. But these LCDs must be backlit to work properly—which can be a big battery drain and limits how small the gadgets can be made.
Now a team of researchers in South Korea is developing an approach to autostereoscopic 3-D using tiny prisms that would enable viewers to see three-dimensional images without glasses on organic light-emitting-diode (OLED) screens. Because OLEDs do not need to be backlit—they get their lighting from organic compounds that emit light in response to electric current—they can be thinner, lighter and more flexible than LCDs. The innovation is detailed in a paper published in the August 30 issue of Nature Communications. (Scientific American is part of Nature Publishing Group.)
read the full article on Scientific American: