Patent ID: 11876952
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A head mounted display (HMD) device comprising:
a first image projector configured to project a first image of a stereoscopic image pair;
a second image projector configured to project a second image of the stereoscopic image pair;
an optical calibration system comprising
a first optical path indicative of an alignment of the first image projector,
a second optical path indicative of an alignment of the second image projector,
a waveguide combiner in which the first optical path and the second optical path combine into a shared optical path, and
one or more boresight sensors, each boresight sensor configured to detect calibration image light traveling along one or more of the first optical path or the second optical path; and

a controller configured to adjust one or more of the first image of the stereoscopic image pair and the second image of the stereoscopic image pair based at least in part on an output of the one or more boresight sensors.