POLARIZING BEAM SPLITTER AND APPARATUS FOR STEREOSCOPIC IMAGE PROJECTION USING THE SAME

摘要

The present invention relates to a stereoscopic image projection apparatus. A polarizing converting device of the present invention may include: a wire grid polarizing plate which passes and projects a first polarizing image on a screen, and reflects a second polarizing image; and an image adjusting unit which converts the first polarizing image projected on the screen and the second polarizing image by adjusting the size and the location of the second polarizing image so as to coincide with the size and the location of a third polarizing image projected on the screen. The image adjusting unit includes a first housing having an airtight inside, and a pressure control unit controlling the inside pressure of the first housing. The wire grid polarizing plate is disposed on a side of the first housing, and changes the curvature thereof depending on the change in the inside pressure of the first housing.