US 11,963,571 B2
Pixel optical sensing of visibly transparent object utilizing reflective materials for personal protective equipment
Steven T. Awiszus, Woodbury, MN (US); Kiran S. Kanukurthy, Cottage Grove, MN (US); Eric C. Lobner, Woodbury, MN (US); Robert J. Quintero, St. Paul, MN (US); Micayla A. Johnson, Farmington, MN (US); Milo G. Oien-Rochat, Minneapolis, MN (US); and Neeraj Sharma, Woodbury, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 16/310,905
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Jun. 23, 2017, PCT No. PCT/US2017/039030
§ 371(c)(1), (2) Date Dec. 18, 2018,
PCT Pub. No. WO2017/223469, PCT Pub. Date Dec. 28, 2017.
Application 16/310,905 is a continuation of application No. 15/190,564, filed on Jun. 23, 2016, granted, now 10,610,708.
Claims priority of provisional application 62/408,564, filed on Oct. 14, 2016.
Prior Publication US 2019/0175961 A1, Jun. 13, 2019
Int. Cl. A42B 3/22 (2006.01); A42B 1/0188 (2021.01); A42B 3/04 (2006.01); A61F 9/06 (2006.01); A61F 11/14 (2006.01); G02F 1/133 (2006.01); A42B 3/16 (2006.01); A62B 9/00 (2006.01); A62B 18/00 (2006.01); A62B 18/04 (2006.01); A62B 27/00 (2006.01); G06N 7/00 (2023.01); G06N 20/00 (2019.01); H04R 1/10 (2006.01)
CPC A42B 3/225 (2013.01) [A42B 1/0188 (2021.01); A42B 3/0453 (2013.01); A42B 3/046 (2013.01); A42B 3/0466 (2013.01); A61F 9/067 (2013.01); A61F 9/068 (2013.01); A61F 11/14 (2013.01); G02F 1/13318 (2013.01); A42B 3/16 (2013.01); A62B 9/00 (2013.01); A62B 9/006 (2013.01); A62B 18/00 (2013.01); A62B 18/045 (2013.01); A62B 27/00 (2013.01); G06N 7/00 (2013.01); G06N 20/00 (2019.01); H04R 1/1083 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system comprising:
a head-mounted device;
a visor that includes a reflective object that is substantially transparent in a visible light spectrum and having an opacity between 0% and 20%, the reflective object being embodied at a physical surface of the visor;
at least one visor attachment assembly that couples the visor to the head-mounted device, such that the visor is movable to one or more positions relative to the head-mounted device;
at least one optical sensor attached to the head-mounted device; and
at least one computing device communicatively coupled to the at least one optical sensor, the at least one computing device comprising a memory and one or more computer processors that:
receive, from the optical sensor, an indication of light outside of a visible light spectrum that is reflected from the reflective object;
determine, based at least in part on the light outside of a visible light spectrum that is reflected from the reflective object, a position of the visor; and
perform, based at least in part on the position of the visor, at least one operation.