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Mobility identity platform

  • US 9,036,871 B2
  • Filed: 02/21/2013
  • Issued: 05/19/2015
  • Est. Priority Date: 09/01/2007
  • Status: Expired due to Fees
First Claim
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1. An apparatus for iris image acquisition, the apparatus comprising:

  • a sensor;

    a lens, in optical communication with the sensor, to produce an out-of-focus infra-red image of a subject'"'"'s iris on the sensor and an in-focus non-infra-red image of a feature other than the subject'"'"'s iris on the sensor; and

    a filter array, disposed between and in optical communication with the sensor and the lens, to filter light propagating to the sensor via the lens, the filter array comprising a plurality of filter elements at vertical and horizontal sampling intervals that form a plurality of infra-red cut regions that pass visible illumination for sampling the in-focus non-infra-red image with a first portion of the sensor, and a plurality of infra-red pass regions that pass infra-red illumination for sampling the out-of-focus infra-red image with a second portion of the sensor,wherein the plurality of infra-red pass regions are configured to sample the out-of-focus infra-red image at or below a corresponding Nyquist limit for the infra-red pass regions.

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