Patent ID: 6807760
Filing Date: 2004-10-26
Classification: G02B,G09F

Abstract:
Apparatus for displaying two respective pluralities of still images, forming two respective animated displays, to two respective viewers moving substantially at respective known velocities relative to said respective pluralities of still images substantially along known trajectories substantially parallel to said still images, said apparatus comprising:a first slitboard having a first slitboard length along said trajectories and having a series of slits perpendicular to and spaced along said first slitboard length, said first slitboard having a first slitboard viewer side and a first slitboard opposite side, said first slitboard having a first one of said pluralities of still images on said first slitboard opposite side along said first slitboard length; and a second slitboard having a second slitboard length along said trajectories and having a series of slits perpendicular to and spaced along said second slitboard length, said second slitboard having a second slitboard viewer side and a second slitboard opposite side, said second slitboard having a second one of said pluralities of still images on said second slitboard opposite side along said second slitboard length; wherein: said first and second slitboards are substantially parallel to each other and are a first distance apart; said opposite side of said first slitboard faces said opposite side of said second slitboard; said still images of said first slitboard correspond to said slits of said second slitboard; said images of said second slitboard appear animated to a viewer moving generally parallel to said display device along said viewer side of said first slitboard, and said images of said first slitboard appear animated to a viewer moving generally parallel to said display device along said viewer side of said second slitboard.