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Reflected optic camera module for iris recognition in a computing device

  • US 10,311,299 B2
  • Filed: 12/20/2016
  • Issued: 06/04/2019
  • Est. Priority Date: 12/21/2015
  • Status: Active Grant
First Claim
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1. A system for acquiring biometric data from an iris oriented at an angle to a computing device, the system comprising:

  • a sensor of an iris biometric camera mounted on a computing device;

    an optical entrance of an optical medium of the iris biometric camera, the optical entrance configured to receive light reflected off an iris and incident on the optical entrance at a first angle relative to an optical axis of the sensor that is greater than zero degrees and less than 90 degrees, the received light comprising iris biometric data for biometric matching;

    an interface between the optical medium and a second medium, the interface configured so that the received light undergoes only a single reflection within the optical medium, the single reflection being a total internal reflection of the received light within the optical medium at the interface, and the received light is incident at a second angle greater than a critical angle of the interface to cause the total internal reflection of the received light within the optical medium; and

    an optical exit of the optical medium, the optical exit configured to couple the total internally reflected light to the sensor for acquiring the iris biometric data.

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