×

OPTICAL PROXIMITY SENSOR SYSTEM HAVING REDUCED SENSITIVITY TO DISTINCT NEAR-FIELD OPTICAL EFFECTS

  • US 20140218340A1
  • Filed: 02/21/2013
  • Published: 08/07/2014
  • Est. Priority Date: 02/05/2013
  • Status: Active Grant
First Claim
Patent Images

1. A portable electronic device comprising:

  • a proximity sensing device having an emitter and a detector;

    a housing for containing the proximity sensing device; and

    an optical interface forming a face of the housing through which radiation between the emitter and the detector pass, wherein the optical interface comprises an oleophobic coating which is selectively modified such that optical interference from an optical interface near-field object on the proximity sensing device is reduced without reducing a sensitivity of the proximity sensing device to a target near-field object.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×