A stereoscopic image display apparatus comprising: a polarizing beam splitter for spatially splitting image light provided along an input path into a transmitted image light beam and first and second reflected image light beams; at least one modulator (306, 307) for adjusting the transmitted image light beam and the first and second reflected image light beams such that the transmitted image light beam and the first and second reflected image light beams have a first polarization state for a left image and a second polarization state for a right image; an angle adjustment unit for adjusting positions on a screen on which the transmitted image light beam is projected in response to a first remote control signal from a remote controller, a first reflecting member for adjusting a path of the first reflected image light beam, and a first motor set (603-1, 603-2) for adjusting a direction of the first reflecting member upward and downward, and leftward and rightward, the first motor set configured to operate according to a second remote control signal from the remote controller; and a second reflecting member for adjusting a path of the second reflected image light beam and a second motor set (604-1, 604-2) for adjusting a direction of the second reflecting member upward and downward, and leftward and rightward, the second motor set configured to operate according to the second remote control signal from the remote controller; wherein the first and second reflecting members are configured to be adjusted such that the first reflected image light beam overlaps the transmitted image light beam in an upper part of the screen and the second reflected image light beam overlaps the transmitted image light beam in a lower part of the screen, and the overlapped image light beams are coupled to form a single image, the angle adjustment unit being motor operated by a third motor. a polarizing beam splitter for spatially splitting image light provided along an input path into a transmitted image light beam and first and second reflected image light beams; at least one modulator (306, 307) for adjusting the transmitted image light beam and the first and second reflected image light beams such that the transmitted image light beam and the first and second reflected image light beams have a first polarization state for a left image and a second polarization state for a right image; an angle adjustment unit for adjusting positions on a screen on which the transmitted image light beam is projected in response to a first remote control signal from a remote controller, a first reflecting member for adjusting a path of the first reflected image light beam, and a first motor set (603-1, 603-2) for adjusting a direction of the first reflecting member upward and downward, and leftward and rightward, the first motor set configured to operate according to a second remote control signal from the remote controller; and a second reflecting member for adjusting a path of the second reflected image light beam and a second motor set (604-1, 604-2) for adjusting a direction of the second reflecting member upward and downward, and leftward and rightward, the second motor set configured to operate according to the second remote control signal from the remote controller; wherein the first and second reflecting members are configured to be adjusted such that the first reflected image light beam overlaps the transmitted image light beam in an upper part of the screen and the second reflected image light beam overlaps the transmitted image light beam in a lower part of the screen, and the overlapped image light beams are coupled to form a single image, the angle adjustment unit being motor operated by a third motor.