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Head-mounted projection display system

  • US 6,535,182 B2
  • Filed: 12/07/1998
  • Issued: 03/18/2003
  • Est. Priority Date: 12/07/1998
  • Status: Expired due to Fees
First Claim
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1. 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.

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