Patent ID: 7342602
Filing Date: 2008-03-11
Classification: G02B

Abstract:
1. Polarization means used for a three-dimensional image display apparatus, said three-dimensional image display apparatus comprising: an image display section for displaying image information corresponding to parallax in a first region and a second region; and a first phase retardation plate which is provided facing at least said first region of said image display section and which rotates a polarization direction of a polarized light of said image information from said first region in a direction different from a polarization direction of a polarized light of said image information from said second region; said polarization means comprising: a first area which allows said polarized light of said image information from said first region, the polarization direction of which is rotated to enter; a second area which allows said polarized light of said image information from said second region to enter; and a second phase retardation plate for rotating the polarized light of said image information from said second region in a direction opposite to that of said first phase retardation phase, said second phase retardation plate being provided in said second area on the image display section side.