US 12,085,719 B2
Head mounted device with terahertz tracking
Gaetano Aiello, Redmond, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Jun. 2, 2023, as Appl. No. 18/205,357.
Claims priority of provisional application 63/432,555, filed on Dec. 14, 2022.
Prior Publication US 2024/0201496 A1, Jun. 20, 2024
Int. Cl. G02B 27/01 (2006.01); G01S 13/89 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G01S 13/89 (2013.01); G06F 3/013 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A head mounted device, comprising:
a terahertz sensor configured to:
direct a transmit terahertz signal towards an eyebox region; and
sense at least one return terahertz signal, wherein the at least one return terahertz signal is reflected from the eyebox region in response to the transmit terahertz signal; and
processing logic coupled to the terahertz sensor and configured to identify, based on the at least one return terahertz signal sensed by the terahertz sensor, a portion of an object in the eyebox region.
 
8. A method for a head mounted device to perform tracking using terahertz signals, the method comprising:
directing a transmit terahertz signal towards an eyebox region; and
sensing at least one return terahertz signal, wherein the at least one return terahertz signal is reflected from the eyebox region in response to the transmit terahertz signal;
identifying, based on the at least one return terahertz signal, a portion of an object in the eyebox region; and
performing an action pertaining to an operational feature of the head mounted device based on the identified portion of the object in the eyebox region.
 
16. A device, comprising: a terahertz transmitter configured to direct a transmit terahertz signal towards an object; a terahertz receiver configured to receive at least one return terahertz signal, wherein the at least one return terahertz signal is reflected from the object in response to the transmit terahertz signal; and a processing system coupled to the terahertz transmitter and to the terahertz receiver, and configured to identify, based on the at least one return terahertz signal sensed by the terahertz receiver, a portion of the object and a state of the portion of the object.