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MM: Fachverband Metall- und Materialphysik
MM 42: Topical Session Multifunctional Materials III
MM 42.3: Talk
Wednesday, March 24, 2010, 15:45–16:00, H6
Diffractive optics on contact lens: application of electron beam lithography on polymer material with curved structures — •Xin Jin1, Dawit Gedamu1, Rainer Adelung1, Dirk Meyners2, Eckhard Quandt2, Matthias Kaläne2, Kai Rossnagel3, Lutz Kipp3, and Frank Spors4 — 1Functional Nanomaterials, Institute of Materials Science, CAU Kiel, Germany — 2Inorganic Functional Materials, Institute of Materials Science, Faculty of Engineering, CAU Kiel, Germany — 3Electronic Structure / Synchrotron Radiation, Institute for Experimental and Applied Physics, CAU Kiel, Germany — 4College of Optometry, Western University of Health Sciences, Ca, USA
The principle of a diffractive bifocal contact lens was first suggested in the 1980s in the treatment for presbyopia. But the products were not successful due to problems with the reduction of the contrast in the patient*s vision. However, with progress in both the fabrication method and the design of diffractive optics (e.g., photon sieves), the question about the application of diffractive optics on contact lenses can be asked again. Therefore, in this research, zone plates and photon sieves are manufactured on contact lenses using electron beam lithography (EBL). furthermore, the problems of applying EBL on polymer contact lenses employing curved surfaces are discussed.
Acknowledgement: We thank Janine Greve for skillful technical support