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FINGER SENSOR USING POLARIZED LIGHT AND ASSOCIATED METHODS

  • US 20080219522A1
  • Filed: 03/07/2008
  • Published: 09/11/2008
  • Est. Priority Date: 03/09/2007
  • Status: Active Grant
First Claim
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1. A multi-biometric finger sensor comprising:

  • an integrated circuit (IC) substrate for receiving a user'"'"'s finger;

    an optical source for projecting light of a known polarization angle onto the user'"'"'s finger;

    at least one optical sensing pixel on said IC substrate for detecting a relative depolarization angle of the light reflected from the user'"'"'s finger; and

    at least one other biometric finger sensing pixel on said IC substrate for sensing at least one other biometric characteristic from the user'"'"'s finger.

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