HAN, CHIN SAN,BLOCK, UEYN,KESTELLI, NEVZAT AKIN,ISIKMAN, SERHAN,WANG, ALBERT,SHI, JUSTIN,LAND, BRIAN R.
申请号：
CA2899459
公开号：
CA2899459A1
申请日:
2015.08.04
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
A photoplethysmographic (PPG) device is disclosed. The PPG device can includeone or morelight emitters and one or more light sensors to generate the multiple lightpaths for measuring aPPG signal and perfusion indices of a user. The multiple light paths betweeneach pair of lightemitters and light detectors can include different separation distances togenerate both anaccurate PPG signal and a perfusion index value to accommodate a variety ofusers and usageconditions. In some examples, the multiple light paths can include the sameseparation distancesfor noise cancellation due to artifacts resulting from, for example, tiltand/or pull of the device, auser's hair, a user's skin pigmentation, and/or motion. The PPG device canfurther include one ormore lenses and/or reflectors to increase the signal strength and/or and toobscure the opticalcomponents and associated wiring from being visible to a user's eye.
