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. Audiotronics projector brand, delivering world-class performance by all projector segment, includes home video projector, business projector, education projector, meeting room projector, portable projector and auditorium projector.