A laser projector is a device that projects light using lasers to create the image on a screen or wall. Lasers are used in modern projection technology because they can be made smaller and have more applications than older light sources, such as incandescent lamps, which are low-powered sources of energy that emit light in every direction. A laser projector uses an assembly of mirrors, lenses and other optical equipment to project an image onto a surface such as a wall or tablet computer screen.