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Also known as image projector

thumb|right|Acer inc.|Acer projector, 2012 thumb|Digital Light Processing|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. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal projector, is a projector that projects an image directly on the retina instead of using an external projection screen.