Among those was an extremely unusual device, a rear-projection display with an array of bulbs each able to shine through a different letter or numeral slide. There was such interest in this device ...

An earlier large-screen TV that employed several technologies to generate the image. Rear-projection TVs (RPTVs) were developed to extend the size of the CRT TV, which for practical purposes maxed ...

For projection technologies (CRT, LCD, etc.), see rear-projection TV. See data projector. Front-projection TVs can change their screen size by replacing the screen and moving the unit closer or ...