Patents by Inventor Andrey PUTILIN

Andrey PUTILIN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing a beam shaping holographic optical element
    Patent number: 10670789
    Abstract: A method for recording a plurality of scatter volume holograms in a photopolymeric recording medium, the method including at least the following steps providing a first laser light source, providing a photopolymeric recording medium including a substrate and a photoactive layer, wherein the photopolymeric recording medium has an index modulation ?n of at least 0.04 and a thickness d of the photoactive layer of at least 25 ?m, and irradiating the photopolymeric recording medium with the first laser light beam generated by the first laser light source with a minimum irradiation energy dosage of 3*Di, Di being the inhibition dosage of the photoactive layer.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: June 2, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Thomas Fäcke, Friedrich-Karl Bruder, Günther Walze, Andrey Putilin
  • METHOD FOR PRODUCING A BEAM SHAPING HOLOGRAPHIC OPTICAL ELEMENT
    Publication number: 20180329127
    Abstract: The invention relates to a method for recording a plurality of scatter volume holograms in a photopolymeric recording medium, the method comprising at least the following steps providing a first laser light source, providing a photopolymeric recording medium comprising a substrate and a photoactive layer, wherein the photopolymeric recording medium has an index modulation ?n of at least 0.
    Type: Application
    Filed: November 18, 2016
    Publication date: November 15, 2018
    Inventors: Thomas FÄCKE, Friedrich-Karl BRUDER, Günther WALZE, Andrey PUTILIN