Rear projection provides a number of benefits for displaying computer or video images. With rear projection, the projector is located behind the projection screen, this means that no one can get between the projector and screen and therefore obstruct the image, the noise from the projector is also minimal and the mechanics and projector are hidden from general view. The major benefit of using rear projection lies in the ability to have the viewing environment brightly lit without degrading the picture brightness.

Rear projection solutions can be supplied in three basic forms;

Straight projection - where the projector is located directly behind the screen and the normal lens of the projector is used to display an image, the disadvantage of this is that the projection depth required is much greater than the other methods,
Custom Rig Projection- where the projector is located in a mechanical "Rig" with either a single mirror or twin mirrors, this reduces the overall depth required but increases cost,
Projection Cubes - the projection module and mirror assembly are self contained within a purpose built cabinet and are generally free standing, these are normally available in set screen sizes of 40", 50", 60", 70" for custom size displays the Custom rig is normally the only available option.