A stereoscopic image display apparatus for stereoscopically viewing an image displayed on a display, by transmitting light through a mask pattern where plural apertures and plural light shielding portions are arranged in a predetermined pitch in the horizontal and vertical directions, transmitting the...http://www.google.com/patents/US6151062?utm_source=gb-gplus-sharePatent US6151062 - Stereoscopic image display apparatus using specific mask pattern
