Patents Assigned to FACEBOOK TECHNOLOGIGEGS, LLC
  • Diffraction grating with a variable refractive index using multiple resins
    Patent number: 10823887
    Abstract: An inkjet is used to fabricate an optical device having a varying refractive index. The inkjet deposits a first material having a first refractive index and a second material having a second refractive index in a pattern on a substrate. The first material and/or the second material are processed to form an optical device having a refractive index that varies in one or two dimensions. The optical device is used in a virtual-reality system or augmented-reality system to provide angular selectivity from display to a user's eye.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: November 3, 2020
    Assignee: FACEBOOK TECHNOLOGIGEGS, LLC
    Inventors: Giuseppe Calafiore, Austin Lane, Matthew E. Colburn