Method for manufacturing Optical Low Angle Pass Filter for PPG sensor having high SNR and PPG sensor comprising the same

摘要

TECHNICAL FIELD [0001] The present invention relates to a method of manufacturing a low-angle optical transmittance filter for a pulse laser pulse wave sensor having a high signal-to-noise ratio and an optical pulse pressure sensor including the same. More particularly, A second step S200 of depositing an aluminum mirror having a predetermined thickness or more on the upper side of the UV resin by the first step S100 and the first step S100, the second step S200 of depositing an aluminum mirror by the second step S200, A third step S300 of forming an index matching spacer for refractive index matching on the resin, and an upper part of the UV resin having the index matching layer formed by the third step S300 are laminated on a PDMS (Polydimethylsiloxane) plate And a fourth step (S400) of flattening the low-angle optical transmittance filter by using the optical pulse-waveguide filter having a high signal-to-noise ratio.