HAN, CHIN SAN,BLOCK, UEYN U,LAND, BRIAN R. BR,KESTELLI, NEVZAT AKIN NA,ISIKMAN, SERHAN S,WANG, ALBERT A,SHI, JUSTIN J,韓珍山,.布洛克,.蘭德,.科斯特裡,.艾斯科曼,.王,.史
申请号：
HK16107857.9
公开号：
HK1219644A
申请日:
2016.07.06
申请国别(地区):
HK
年份:
2017
代理人:
摘要：
A photoplethysmographic (PPG) device is disclosed. The PPG device can include one or more light emitters and one or more light sensors to generate the multiple light paths for measuring a PPG signal and perfusion indices of a user. The multiple light paths between each pair of light emitters and light detectors can include different separation distances to generate both an accurate PPG signal and a perfusion index value to accommodate a variety of users and usage conditions. In some examples, the multiple light paths can include the same separation distances for noise cancellation due to artifacts resulting from, for example, tilt and/or pull of the device, a user's hair, a user's skin pigmentation, and/or motion. The PPG device can further include one or more lenses and/or reflectors to increase the signal strength and/or and to obscure the optical components and associated wiring from being visible to a user's eye.
