US 11,717,197 B2
Physiological monitoring system for measuring oxygen saturation
Vivek Venugopal, Santa Clara, CA (US); Ueyn L. Block, Menlo Park, CA (US); Brian R. Land, Woodside, CA (US); Paul D. Mannheimer, Los Altos, CA (US); and Albert E. Cerussi, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 11, 2020, as Appl. No. 17/18,850.
Claims priority of provisional application 62/907,445, filed on Sep. 27, 2019.
Prior Publication US 2021/0093237 A1, Apr. 1, 2021
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61L 31/02 (2006.01); H01L 31/0203 (2014.01); H01L 31/0216 (2014.01); H01L 31/173 (2006.01)
CPC A61B 5/14552 (2013.01) [A61B 5/7278 (2013.01); A61L 31/028 (2013.01); H01L 31/0203 (2013.01); H01L 31/02164 (2013.01); H01L 31/173 (2013.01); A61B 5/681 (2013.01); A61B 2562/0242 (2013.01); A61B 2562/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wearable device, comprising:
a housing having a back cover;
an optical mask on first portions of the back cover;
the back cover including a set of windows, wherein,
a first subset of windows in the set of windows is defined by an absence of the optical mask on second portions of the back cover; and
a second subset of windows in the set of windows is inset in a set of openings in the back cover;
an optical barrier surrounding each window in the second subset of windows;
a set of light emitters configured to emit light through at least some of the windows in the set of windows; and
a set of light detectors configured to receive light through at least some of the windows in the set of windows.