Abstract: An example optical system for a 3D stereoscopic image display comprises a changing mirror, a rotating mirror, a tilted mirror, a concave mirror and a planar mirror. The changing mirror can change the path of light from a horizontal direction to a vertical direction. The rotating mirror can rotate while having an X-axis and a Y-axis with different curvature radii. The tilted mirror can include a central region with a hole for allowing light to pass therethrough, and a peripheral region having one surface having a concave tilted structure while the other surface has a planar structure. The concave mirror can include a central region with a hole having a size capable of encompassing the tilted mirror and a peripheral region having a bent structure that is completely concave. The planar mirror can include a central region with a hole and a peripheral region with a flat doughnut structure.

Abstract: An optical system for a three-dimensional stereoscopic image display, according to exemplary embodiments, can comprise a changing mirror, a rotating mirror, a tilted mirror, a concave mirror and a planar mirror. The changing mirror can be provided so as to change the path of light, having passed through a spatial light modulator, from a horizontal direction to a vertical direction. The rotating mirror can be provided to rotate while having an X-axis and a Y-axis with respectively different curvature radii. The tilted mirror can be provided such that a central region thereof has a hole for allowing light to pass therethrough, and a peripheral region thereof has one surface having a concave tilted structure while the other surface has a planar structure. The concave mirror can be provided such that a central region thereof has a hole having a size capable of encompassing the tilted mirror and a peripheral region thereof has a bent structure that is completely concave.