Optical device, and virtual image display
First Claim
1. An image display device comprising:
- an image display element;
an optical system;
an optical waveguide having a light incident port along a first portion of the optical waveguide and a light outgoing port along a second portion of the optical waveguide, the optical waveguide configured to (a) receive light from the image display element via the optical system and (b) provide the light as output through the light outgoing port;
a light shield;
a first element that deflects light received through the first portion of the optical waveguide; and
a second element that deflects light conveyed in the optical waveguide to output light through the second portion of the optical waveguide,wherein,the first portion and the second portion are at different positions along the optical waveguide, andthe first element is between the light incident port of the optical waveguide and the light shield.
0 Assignments
0 Petitions
Accused Products
Abstract
A virtual image display device with an optical waveguide to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
-
Citations
10 Claims
-
1. An image display device comprising:
-
an image display element; an optical system; an optical waveguide having a light incident port along a first portion of the optical waveguide and a light outgoing port along a second portion of the optical waveguide, the optical waveguide configured to (a) receive light from the image display element via the optical system and (b) provide the light as output through the light outgoing port; a light shield; a first element that deflects light received through the first portion of the optical waveguide; and a second element that deflects light conveyed in the optical waveguide to output light through the second portion of the optical waveguide, wherein, the first portion and the second portion are at different positions along the optical waveguide, and the first element is between the light incident port of the optical waveguide and the light shield. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification