US 11,852,824 B2
Eye-imaging system with switchable hot mirrors
Benjamin Eliot Lundell, Seattle, WA (US); Joel Steven Kollin, Seattle, WA (US); Ishan Chatterjee, Mountain View, CA (US); Maria Esther Pace, Palo Alto, CA (US); Mark Theodore Bolas, Bellevue, WA (US); Bernard Charles Kress, Redwood City, CA (US); Robert Thomas Held, Seattle, WA (US); Andreas Georgiou, Cambridge (GB); and Christopher Charles Aholt, Newcastle, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Apr. 4, 2022, as Appl. No. 17/657,883.
Prior Publication US 2023/0314803 A1, Oct. 5, 2023
Int. Cl. G02B 27/01 (2006.01); G02B 26/08 (2006.01); G06V 40/19 (2022.01); G06T 7/70 (2017.01)
CPC G02B 27/0172 (2013.01) [G02B 26/0816 (2013.01); G06T 7/70 (2017.01); G06V 40/19 (2022.01); G02B 2027/0138 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A head-mounted display system, comprising:
a frame;
an eye-imaging camera supported on the frame;
a switchable hot mirror array comprising a plurality of switchable hot mirrors configured to direct light reflecting from an eye toward the eye-imaging camera; and
a controller configured to control switching of a reflectivity of each of the plurality of switchable hot mirrors, wherein the plurality of switchable hot mirrors is arranged such that, when reflectivity of a first switchable hot mirror is switched on and reflectivity of a second switchable hot mirror is off, light incident on the first switchable hot mirror is reflected toward the eye-imaging camera, passing through the second switchable hot mirror.