US 12,436,563 B2
Detecting an orientation of a wearable device using different wavelengths of transmitted light
Tero Juhani Vallius, Kontio (FI)
Assigned to Oura Health Oy, Oulu (FI)
Filed by Oura Health Oy, Oulu (FI)
Filed on Aug. 15, 2023, as Appl. No. 18/449,899.
Prior Publication US 2025/0060780 A1, Feb. 20, 2025
Int. Cl. G06F 1/16 (2006.01); A61B 5/00 (2006.01)
CPC G06F 1/163 (2013.01) [A61B 5/6802 (2013.01); A61B 5/6826 (2013.01); G06F 2200/1637 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for detecting an orientation of a wearable device worn by a user, comprising:
transmitting, using one or more light-emitting components of the wearable device, first light associated with a first wavelength and second light associated with a second wavelength;
generating a first signal and a second signal based at least in part on the first light and the second light, respectively, received using one or more photodetectors of the wearable device;
determining, based at least in part on the first wavelength associated with the first light being different than the second wavelength associated with the second light, an orientation metric associated with the orientation of the wearable device worn by the user based at least in part on a comparison of a first signal strength associated with the first signal and a second signal strength associated with the second signal, based at least in part on the first signal strength associated with the first light of the first wavelength being unaffected by the orientation of the wearable device, and based at least in part on the second signal strength associated with the second light of the second wavelength changing based at least in part on the orientation of the wearable device; and
acquiring physiological data from the user via the wearable device using a set of measurement parameters that are determined based at least in part on the orientation metric.