Exit Pupil Forming Scanned Beam Projection Display Having Higher Uniformity
First Claim
Patent Images
1. A display screen for a scanned beam display system, comprising:
- an exit pupil expander comprising a reflective layer to reflect an incoming beam from a scanned beam projector to an eyebox;
wherein exit numerical aperture cones emanating from the exit pupil expander resulting from the reflected incoming beam are angularly redirected toward an eyebox disposed near a viewing plane to result in substantially overlapping exit bundles, or diffraction patterns, from multiple spots on the exit pupil expander.
1 Assignment
0 Petitions
Accused Products
Abstract
Briefly, in accordance with one or more embodiments, a display screen for a scanned beam display system comprises an exit pupil expander comprising a reflective layer to reflect an incoming beam from a scanned beam projector to an eyebox. Exit numerical aperture cones emanating from the exit pupil expander resulting from the reflected incoming beam are angularly redirected toward an eyebox disposed near an image plane to result in at least partially overlapping zeroth-order diffraction pattern from multiple spots on the exit pupil expander.
54 Citations
20 Claims
-
1. A display screen for a scanned beam display system, comprising:
-
an exit pupil expander comprising a reflective layer to reflect an incoming beam from a scanned beam projector to an eyebox; wherein exit numerical aperture cones emanating from the exit pupil expander resulting from the reflected incoming beam are angularly redirected toward an eyebox disposed near a viewing plane to result in substantially overlapping exit bundles, or diffraction patterns, from multiple spots on the exit pupil expander. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A display system, comprising:
-
a scanned beam projector to project a scanned beam as a displayed image; and a display screen, the display screen comprising; an exit pupil expander comprising a reflective layer to reflect an incoming beam from the scanned beam projector to an eyebox; wherein exit numerical aperture cones emanating from the exit pupil expander resulting from the reflected incoming beam are angularly redirected toward an eyebox disposed near a viewing plane to result in substantially overlapping exit bundles, or diffraction patterns from multiple spots on the exit pupil expander. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A display screen for a scanned beam display system, comprising:
-
a reflective layer capable of reflecting an incoming beam emitted from a scanned beam projector to an eyebox at or near a viewing plane; wherein exit cones emanating from the reflective layer resulting from the reflected incoming beam are angularly redirected toward the eyebox disposed near a viewing plane to cause the exit cones to substantially overlap at or near the eyebox, and wherein the amount of angular redirection is a function of an X-Y location at which the incoming beam impinges on the reflective layer. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification