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1973 [1] 6 inches: LightGuide: No : 480i : 50 [2] Analogue: Schmidt optics, with fixed curved aluminium coated screen. Approximately 500 were produced and sold in the Boston area [3] Videobeam 1000A : Advent: 1975 [4] 9 inches: LightGuide: No : 480i : 50 [5] Analogue
Since 2005, [10] the only remaining manufacturers of the LCDs for LCD projectors are Japanese imaging companies Epson and Sony. Epson owns the technology and has branded it as "3LCD". To market 3LCD projector technology, Epson also set up a consortium called the "3LCD Group" in 2005 with other projector manufacturer licensees of 3LCD technology ...
Acer projector, 2012 DLP type home theatre projector in use. A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen.
Slide projector light generation and collimation system: from left to right, mirror / reflector, bulb, condenser lens 1, green-tinted heat-absorbing glass, condenser lens 2; a centrifugal fan, used to cool the bulb, is visible at the top of the picture. A projector has three main optical elements: [3]: 39–40