Please download the dossier by clicking on the dossier button x
×

VIRTUAL IMAGE DISPLAY DEVICE

  • US 20170146803A1
  • Filed: 03/26/2015
  • Published: 05/25/2017
  • Est. Priority Date: 06/13/2014
  • Status: Active Grant
First Claim
Patent Images

1. A virtual image display device comprising:

  • a light source unit that emits a light beam;

    a polarization switching unit that switches a polarization direction of the light beam emitted from the light source unit between a first polarization direction and a second polarization direction;

    an image generation unit that generates image light from the light beam emitted from the light source unit;

    an optical path unit including a first optical path through which the light beam having the first polarization direction travels and a second optical path through which the light beam having the second polarization direction travels, optical path length of the second optical path being longer than optical path length of the first optical path; and

    a projection unit that projects the light beam emerging from the optical path unit, wherein;

    an image that is displayed as a virtual image is projected at a first distance from an observer with the light beam that has traveled through the first optical path of the optical path unit, andan image that is displayed as another virtual image is projected at a second distance farther than the first distance from the observer with the light beam that has traveled through the second optical path of the optical path unit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×