Edge configurations for reducing artifacts in eyepieces
AssigneeGoogle Inc.
InventorsAnurag Gupta, Steven Vincent James, Amber Marie Luttmann
Life of this patent
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Abstract
An eyepiece for a head mounted display (“HMD”) includes a first end for receiving computer generated image (“CGI”) light and a second end disposed opposite the first end. The eyepiece also includes an image directing element to direct the CGI light out of the eyepiece in an eye-ward direction. The image directing element is disposed between the first end and the second end. At least one edge running between the first end and the second end is configured to reduce reflection of the CGI light back into the eyepiece.
Claims20
An eyepiece for a head mounted display (“HMD”) comprising:
- a light receiving end for receiving computer generated image (“CGI”) light propagating along a forward optical path;
- an end reflector disposed at an opposite end of the eyepiece from the light receiving end to reflect the CGI light along a reverse optical path within the eyepiece;
- a beam splitter positioned to direct the CGI light propagating along the reverse optical path in an eye-ward direction, wherein the beam splitter is disposed between the light receiving end and the end reflector;
- and
- at least one edge of the eyepiece running between the light receiving end and the end reflector, wherein the at least one edge is beveled to reduce reflection of the CGI light back into the eyepiece, wherein the at least one edge runs along a direction extending from the light receiving end to the end reflector.
A head mounted display (“HMD”) comprising:
- a display module for launching computer generated image (“CGI”) light along a forward propagating path;
- and
- an eyepiece including:
- a first end optically coupled to receive the CGI light from the display module;
- a second end disposed opposite the display module and the first end;
- an image directing element to direct the CGI light in an eye-ward direction, wherein the image directing element is disposed between the first end and the second end;
- and
- at least one edge running between the first end and the second end, wherein the at least one edge is beveled to reduce reflection of the CGI light back into the eyepiece, wherein the at least one edge runs along a direction extending from the first end to the second end.
An optical apparatus comprising:
- a first end for receiving computer generated image (“CGI”) light;
- a second end disposed opposite the first end;
- an image directing element to direct the CGI light out of the optical apparatus in an eye-ward direction, wherein the image directing element is disposed between the first end and the second end;
- and
- at least one edge running between the first end and the second end, wherein the at least one edge is beveled to reduce reflection of the CGI light back into the optical apparatus, wherein the at least one edge runs along a direction extending from the first end to the second end.
Dependencies are inferred from the claim text.