US 12,332,445 B2
Stereo alignment assessment for head-mounted display
James Peele Terrell, Jr., Bellvue, CO (US); Michael Scott Sutton, Arvada, CO (US); Rayna Demaster-Smith, Kirkland, WA (US); Dmitriy Churin, Redmond, WA (US); and Parry Byron Johnson, Redmond, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Feb. 28, 2022, as Appl. No. 17/652,901.
Prior Publication US 2023/0273433 A1, Aug. 31, 2023
Int. Cl. G02B 27/01 (2006.01); G02B 6/10 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/10 (2013.01); G06F 3/011 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A head-mounted display system, comprising:
a left display assembly configured to provide left-side display light and left-side test light;
a left waveguide configured to receive the left-side display light from the left display assembly via a first left-side diffractive optical element (L-DOE) and output the left-side display light for viewing at a left eyebox via a second L-DOE;
a left optical sensor positioned to measure the left-side test light;
a left inertial measuring unit (IMU) configured to measure an orientation of the left display assembly;
a right display assembly configured to provide right-side display light and right-side test light;
a right waveguide configured to the right-side display light from the right display assembly via a first right-side diffractive optical element (R-DOE) and output the right-side display light for viewing at a right eyebox via a second R-DOE;
a right optical sensor positioned to measure the right-side test light;
a right IMU configured to measure an orientation of the right display assembly; and
a logic machine configured to assess a stereo alignment for the left- and right-side display light based at least in part on the left-side test light measured by the left optical sensor, the right-side test light measured by the right optical sensor, the orientation of the left display assembly measured by the left IMU, and the orientation of the right display assembly measured by the right IMU.