Patents Assigned to Barberini GmbH
  • Contrast enhancing glass for sunglass lenses
    Patent number: 11485675
    Abstract: A glass composition, including contrast enhancing glass and contrast enhancing sunglass, having approximately 45-65 wt.-%, SiO2, 0-12 wt.-% B2O3, 0-15 wt.-%, Na2O, 0-10 wt.-% K2O, and 10 0-7 wt.-% ZnO, 1-12 wt.-% Nd2O3, 1-10 wt.-% Er2O3, 0.5-8 wt.-% Ho2O3, and 0.00-0.05 wt.-% NiO, and methods of making the same.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 1, 2022
    Assignee: Barberini GmbH
    Inventors: Antje Gawronski, Simon Striepe, Ottmar Bartels