Patent ID: 7357510
Filing Date: 2008-04-15
Classification: G02B,H04N

Abstract:
1. A projection-type 3-D image display device to enlarge and project an input image to display a 3-D image, the projection-type 3-D image display device comprising: a single display element to emit light having a first polarization direction according to the input image; a polarization conversion switch to time-sequentially convert the first polarization direction of the emitted light in a second polarization direction; a first image shifter to transmit the light having the first polarization direction to form a first image, and to refract the light having the second polarization direction to form a second image; a second image shifter disposed apart by a predetermined distance from the first image shifter to refract the light having the second polarization direction to shift the second image by a predetermined shifting distance relative to the first image; a projection lens unit to enlarge and project the first and second images; a mirrored light tunnel to allow the first and second images to be focused at a first view point and at a second view point, respectively; and a screen unit having an image separation unit to deliver the first and second images to a first position and a second position, respectively.