公开(公告)号：US20210059585A1

公开(公告)日：2021-03-04

申请号：US17001902

申请日：2020-08-25

Applicant: NANOLAMBDA KOREA

Inventor： Byung IL CHOI ,  Cheng-Chun CHANG ,  Chien-Ta WU

IPC: A61B5/1455 ,  H01L31/02 ,  H01L31/0203 ,  H01L31/0216 ,  H01L31/173 ,  A61B5/00 ,  G01N21/31

Abstract: A chip-scale integrated multi-wavelength biological sensing device employing a plurality of filter-sensor assemblies is provided. The plurality of filter-sensor assemblies can include sufficient number of optical channels enabled by plasmonic filters having different nanoscale patterns and provided directly on an array of photodetectors. Combined with simultaneous illumination of light including multiple peak wavelengths with small full width at half maximum values, the independent optical channels of the plurality of filter-sensor assemblies enable correlation of detected optical signals with biological parameters. Signal processing methods for robustly extracting The PPG signals can be extracted by a robust signal processing method. Successful measurement of peripheral blood oxygen (SpO2) and blood pressure has been demonstrated.