Fabrication of three-focal diffractive lenses by two-photon polymerization technique
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Fabrication of submicron-height relief of three-focal diffractive lenses using two-photon polymerization is studied. Optical properties of the designed lenses are investigated theoretically and experimentally. The proposed design of the combined diffractive–refractive lenses is promising for the realization of three-focal optical ophthalmological implants with predetermined light intensity distribution between the foci. The realized three-focal optical element has a diameter size of 2.7 mm with the focal distances in the range of 27–34 mm.
We would like to gratefully acknowledge the EC FP7-Marie Curie-IIF Program (Proposal No. 235969), the Russian Federation state contract no. 07.514.11.4060, and the German project REMEDIS for support of this work.
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