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3D-Multicolor
Hybrid diamond turning technologies for the generation of diffractive masks for 3D-lithography and multiple wavelength diffractive optical elements
The objective of the project is the development of a novel production process for the generation of multifunctional anti-counterfeit identification tags on arbitrarily curved surfaces. In order to achieve this goal, the technologies of ultraprecision diamond turning and UV-lithography are combined in a hybrid process. The basic idea is to use a diamond turned diffractive optical element (DOE) as a reflective phase mask for lithography, creating micro structures on curved surfaces. These structures are multifunctional in that respect, that they contain two functional groups, one enabling the identification of the tag with the eye and the other one consisting of a characteristic feature, facilitating the verification of the originality of the tag with technical means. The main advantages of the proposed hybrid process are the very fast and cost effective generation of the identification tags, the high security against forgery and the feasibility of a direct application of the tag to the product.
Funded by
Volkswagen Foundation
Timeframe
2009-2012
Department Manager
Dr.-Ing. Thomas
Seefeld
Welding and Surface Technology
| Phone: | +49(0)421 - 218 58000 | (Switchboard) |
| +49(0)421 - 218 58040 | (Direct Line) |
Dr. rer. nat.
Christoph von Kopylow
Optical Metrology
| Phone: | +49(0)421 - 218 58000 | (Switchboard) |
| +49(0)421 - 218 58016 | (Direct Line) |