The first U.S. experimental 3D television broadcast showed an episode of Space Patrol on Los Angeles ABC affiliate KECA-TV.
Space Patrol is an American science fiction adventure series set in the 30th century that was originally aimed at juvenile audiences via television, radio, and comic books. It was broadcast on ABC from March 1950 to February 1955. It soon developed a sizable adult audience, and by 1954 the program consistently ranked in the top 10 shows broadcast on a Saturday.
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. As of 2017, most 3D TV sets and services are no longer available.