Projector may refer to: Video projector, a device that projects a video signal from computer, home theater system etc. Movie projector, a device that projects moving pictures from a filmstrip Slide projector, a device that projects a still image with a transparent base Overhead projector, a device that projects a transparent image Opaque projector, a predecessor to the overhead projector Magic lantern, a historic projection device Camera obscura, the historic ancestor to projection device… (More on Projectors)