US 12,144,616 B2
Eyewear with blood sugar detection
Venu Iyengar, Fremont, CA (US); and Russell Douglas Patton, Playa Vista, CA (US)
Assigned to Snap Inc., Santa Monica, CA (US)
Filed by Snap Inc., Santa Monica, CA (US)
Filed on May 23, 2023, as Appl. No. 18/201,008.
Application 18/201,008 is a continuation of application No. 16/833,959, filed on Mar. 30, 2020, granted, now 11,690,539, issued on Jul. 4, 2023.
Prior Publication US 2023/0293061 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/145 (2006.01); A61B 5/00 (2006.01); A61B 5/16 (2006.01); G02C 1/08 (2006.01)
CPC A61B 5/14532 (2013.01) [A61B 5/0077 (2013.01); A61B 5/163 (2017.08); A61B 5/6803 (2013.01); A61B 5/742 (2013.01); G02C 1/08 (2013.01); A61B 2560/04 (2013.01); A61B 2562/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An eyewear device including:
a frame supporting a display;
a camera supported by the eyewear device and configured to detect a pupil of an eye of a user;
an illuminator configured to emit a flash of light towards the pupil, wherein the illuminator is separate from the camera;
a memory;
a processor having access to the camera and the memory; and
programming in the memory, wherein execution of the programming by the processor configures the eyewear device to perform functions, including functions to:
monitor behavior of the pupil with the camera and the illuminator;
compare the monitored behavior with known blood sugar level behaviors, each known blood sugar level behavior corresponding to a different blood sugar level;
identify a match responsive to the comparison between the monitored behavior and one of the known blood sugar level behaviors corresponding to a particular blood sugar level;
select the particular blood sugar level as a blood sugar level of the user;
compare the blood sugar level to a threshold; and
present on the display an alert to the user if the blood sugar level crosses the threshold.