Topic: COMPUTER - on September 18, 2003 at 12:46:05 AM CEST
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.1 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 2, 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. The direction of polarization of one half of the laptop screen was rotated by the cellophane half-waveplate. Two images displayed with orthogonal polarization on two halves of the screen become separable by wearing a pair of glasses of orthogonal polarization.
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