Patent ID: 6535182
Filing Date: 2003-03-18
Classification: G02B,G09B

Abstract:
A stereoscopic projection display method, comprising:projecting a first image in the line-of-sight of a viewer from a first projector including an electro-optical light modulator and a projection lens at a first location adjacent to a first one of viewer's eyes, onto a retroreflective projection display screen; projecting a second image in the line-of-sight of the viewer from a second location adjacent to a second one of viewer's eyes, onto the retroreflective projection display screen; and making the line-of-sight directions of projecting the first and second images dependent on the position of the viewer's head, such that said directions change with the line-of-sight of the viewer as the viewer's head moves, such that: the electro-optical light modulator and the projection lens are disposed on a headset to be worn by the viewer during said projecting of the first and second images; the position of the retroreflective projection display screen is independent of the position of the viewer's head; the first image and the second image comprise differing perspective views, so that the viewer experiences a stereoscopic image effect; the first image is reflected from the retroreflective projection display screen to the first one of viewer's eyes but not to the second one of viewer's eyes; and the second image is reflected from the retroreflective projection display screen to the second one of viewer's eyes but not to the first one of viewer's eyes.