Patents Assigned to Xetos AG
  • Patent number: 8603730
    Abstract: There is described a photopolymerisable composition comprising (a) 75 to 99% by weight of an ethylenically unsaturated monomer or a monomer mixture of different ethylenically unsaturated monomers, (b) 0.5 to 25% by weight of a triglyceride or a mixture of different triglycerides and (c) 0.1 to 10% by weight of a photoinitiator system which activates the polymerisation of the ethylenically unsaturated monomer(s) upon exposure to actinic radiation, wherein the composition is a homogeneous, clear and, at 20° C., liquid mixture. Furthermore, there are described elements manufactured from such photopolymerisable compositions and methods for the formation of light-resistant holograms therefrom. The photopolymerisable compositions are useful, in particular, as recording material for optical elements having refractive index modulation, in particular, holograms.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: December 10, 2013
    Assignee: XETOS AG
    Inventor: Frank Knocke
  • Publication number: 20100112458
    Abstract: There is described a photopolymerisable composition comprising (a) 75 to 99% by weight of an ethylenically unsaturated monomer or a monomer mixture of different ethylenically unsaturated monomers, (b) 0.5 to 25% by weight of a triglyceride or a mixture of different triglycerides and (c) 0.1 to 10% by weight of a photoinitiator system which activates the polymerisation of the ethylenically unsaturated monomer(s) upon exposure to actinic radiation, wherein the composition is a homogeneous, clear and, at 20° C., liquid mixture. Furthermore, there are described elements manufactured from such photopolymerisable compositions and methods for the formation of light-resistant holograms therefrom. The photopolymerisable compositions are useful, in particular, as recording material for optical elements having refractive index modulation, in particular, holograms.
    Type: Application
    Filed: June 22, 2005
    Publication date: May 6, 2010
    Applicant: XETOS AG
    Inventor: Frank Knocke
  • Patent number: 6747768
    Abstract: An information carrier includes information in the form of a hologram. In order to increase protection against copying and/or as a simple recognizable additional security feature of this information carrier, the hologram is the combination of a transmission hologram and a reflection hologram.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: June 8, 2004
    Assignee: Xetos AG
    Inventors: Frank Knocke, Dieter Ebert