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Optical digitizer system with position-unique photoluminescent indicia

  • US 9,075,452 B2
  • Filed: 02/12/2014
  • Issued: 07/07/2015
  • Est. Priority Date: 10/29/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a first radiation source for emitting light having a first wavelength range; and

    an optical image sensor comprising a first pixel and a different second pixel, the optical image sensor configured to receive radiation having a second wavelength range, different than the first wavelength range, in response to radiation having the first wavelength range emitted by the first radiation source and direct radiation having a first selected wavelength in the received radiation having the second wavelength range to the first pixel in the optical image sensor and radiation having a different second selected wavelength in the received radiation having the second wavelength range to the second pixel in the optical image sensor.

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