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3D television
3D television (3DTV) is television that conveys depth perception to the viewer by employing techniques such as stereoscopic display, multi-view display, 2D-plus-depth, or any other form of 3D display. Most modern 3D television sets use an active shutter 3D system or a polarized 3D system, and some are autostereoscopic without the need of glasses.
According to DisplaySearch 3D televisions shipments totaled 41.45 million units in 2012, compared with 24.14 in 2011 and 2.26 in 2010. As of late 2013 the number of 3D TV viewers started to decline.
== History ==
The stereoscope was first invented by Sir Charles Wheatstone in 1838.〔Contributions to the Physiology of Vision.—Part the First. On some remarkable, and hitherto unobserved, Phenomena of Binocular Vision. By CHARLES WHEATSTONE, F.R.S., Professor of Experimental Philosophy in King's College, London. (Stereoscopy.com )〕〔Welling, William. Photography in America, page 23〕 It showed that when two pictures are viewed stereoscopically, they are combined by the brain to produce 3D depth perception. The stereoscope was improved by Louis Jules Duboscq, and a famous picture of Queen Victoria was displayed at The Great Exhibition in 1851. In 1855 the Kinematoscope was invented. In the late 1890s, the British film pioneer William Friese-Greene filed a patent for a 3D movie process. On 10 June 1915, former Edison Studios chief director Edwin S. Porter and William E. Waddell presented tests in red-green anaglyph to an audience at the Astor Theater in New York City and in 1922 the first public 3D movie ''The Power of Love'' was displayed.
Stereoscopic 3D television was demonstrated for the first time on 10 August 1928, by John Logie Baird in his company's premises at 133 Long Acre, London. Baird pioneered a variety of 3D television systems using electro-mechanical and cathode-ray tube techniques. The first 3D TV was produced it 1935. By the Second World War, stereoscopic 3D still cameras for personal use were already fairly common. In the 1950s, when TV became popular in the United States, many 3D movies were produced for cinema. The first such movie was ''Bwana Devil'' from United Artists that could be seen all across the US in 1952. One year later, in 1953, came the 3D movie ''House of Wax'' which also featured stereophonic sound. Alfred Hitchcock produced his film ''Dial M for Murder'' in 3D, but for the purpose of maximizing profits the movie was released in 2D because not all cinemas were able to display 3D films. In 1946 the Soviet Union also developed 3D films, with ''Robinzon Kruzo'' being its first full-length 3D movie.〔(【引用サイトリンク】title=Trivia for Robinson Crusoe (1946) )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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