A data projector can cost between twice and 10 times as much as an overhead projector, as of July 2013. Lamp prices likewise exceed those of analog projection equipment, coming in at $300 for a ...

Learn about the evolution of filmstrip, overhead, data, & 3D projectors. The projector has been the centerpiece of interactive classrooms since the 1800s. Skip to main content Become an Insider Sign ...

The Full HD (1,920 x 1,080) projection unit can put out 1,200 ANSI lumens and throw 120-diagonal-inch images from 6.1 ft (1.86 m) away, and the overhead positioning should reduce the chances of ...