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 |
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.
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