Using cellophane to convert a laptop computer screen into a three-dimensional display

“We present a novel, inexpensive, stereoscopic technique for generating 3D displays from cellophane and a laptop computer screen. Stereoscopy requires independent manipulation of the left and right eye views. Our technique takes advantage of two facts; the first is that the light from the liquid crystal display of a laptop computer is polarized light and therefore we can easily manipulate its transmission with a polarizer sheet. The second fact is that a cellophane half-waveplate can change the direction of polarization of light.”