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Systems and methods for infrared detection

  • US 9,699,391 B2
  • Filed: 06/10/2014
  • Issued: 07/04/2017
  • Est. Priority Date: 06/10/2013
  • Status: Expired due to Fees
First Claim
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1. A 3D printer with filament authentication, comprising:

  • a print engine for generating a 3D object using a filament of material; and

    an infrared (IR) authenticator positioned to authenticate the filament before use by the print engine the IR authenticator comprising;

    an IR generator for generating IR at a first wavelength; and

    an IR detector for detecting fluorescence of a dye within the filament at a second IR wavelength;

    wherein the authentication of the filament is based upon detection of the fluorescence at the second IR wavelength;

    wherein operation of the print engine is based upon authentication of the filament by the IR authenticator.

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