Optical system for three-dimensional stereoscopic image display

An optical system for displaying a three dimensional image comprising:

• a changing mirror configured to change a path of a light from a horizontal direction to a vertical direction after the light passes through a spatial light modulator;
• a rotating mirror configured to rotate with an X-axis and a Y-axis having different curvature radii;
• a tilted mirror comprising a central region including a hole for allowing the light to pass therethrough, and a peripheral region including one surface having a concave tilted structure and the other surface having a planar structure;
• a concave mirror comprising a central region including a hole having a size capable of encompassing the tilted mirror, and a peripheral region having an entirely concaved bending structure;
• and
• a planar mirror comprising a central region including a hole therein, and a peripheral region having a flat doughnut structure,
• wherein the changing mirror, the tilted mirror, the rotating mirror and the planar mirror are arranged such that the light of which path is changed by the changing mirror passes through the central region of the tilted mirror, the light directs onto the rotating mirror, the light is reflected toward the one surface of the peripheral region of the tilted mirror, the light is reflected toward the peripheral region of the planar mirror, the light is reflected onto the concave mirror, and the light passes through the central region of the planar mirror, and
• wherein the concave mirror encloses the tilted mirror under the rotating mirror.