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Apparatus and method for measuring biosignal

  • US 9,737,220 B2
  • Filed: 12/15/2015
  • Issued: 08/22/2017
  • Est. Priority Date: 07/07/2015
  • Status: Active Grant
First Claim
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1. An apparatus for measuring a biosignal, comprising:

  • an optical source configured to emit a first light and a second light towards a target;

    an inserted layer configured to transmit the first light and to reflect the second light; and

    an optical detector configured to detect a first received light that corresponds to the first light reflected by or transmitted through the target, and to detect a second received light that corresponds to the second light reflected by the inserted layer.

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