Abstract: A quasi-axial optical imagery projection system is disclosed in this paper. The system includes optical imagery sets; each may be lenses, mirrors, or a combination of both. The system also has a light source close to an imager, which may be a planar mask with a pattern, a LCD imager, or other suitable imagers. The system also has a display screen. Both the imager and the display screen are set at acute angles with respect to an optical axis so that what is projected on the display screen is a magnified image of the imager by a magnification factor that has a transverse component and a longitudinal component. This quasi-axial projection system may be made thinner than other rear projection system of comparable screen size.