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Proceedings Paper

Complex light in 3D printing
Author(s): Christophe Moser; Paul Delrot; Damien Loterie; Edgar Morales Delgado; Miguel Modestino; Demetri Psaltis
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Paper Abstract

3D printing as a tool to generate complicated shapes from CAD files, on demand, with different materials from plastics to metals, is shortening product development cycles, enabling new design possibilities and can provide a mean to manufacture small volumes cost effectively. There are many technologies for 3D printing and the majority uses light in the process. In one process (Multi-jet modeling, polyjet, printoptical©), a printhead prints layers of ultra-violet curable liquid plastic. Here, each nozzle deposits the material, which is then flooded by a UV curing lamp to harden it. In another process (Stereolithography), a focused UV laser beam provides both the spatial localization and the photo-hardening of the resin. Similarly, laser sintering works with metal powders by locally melting the material point by point and layer by layer. When the laser delivers ultra-fast focused pulses, nonlinear effects polymerize the material with high spatial resolution. In these processes, light is either focused in one spot and the part is made by scanning it or the light is expanded and covers a wide area for photopolymerization. Hence a fairly “simple” light field is used in both cases. Here, we give examples of how “complex light” brings additional level of complexity in 3D printing.

Paper Details

Date Published: 16 March 2016
PDF: 4 pages
Proc. SPIE 9764, Complex Light and Optical Forces X, 97641D (16 March 2016); doi: 10.1117/12.2209603
Show Author Affiliations
Christophe Moser, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Paul Delrot, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Damien Loterie, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Edgar Morales Delgado, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Miguel Modestino, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Demetri Psaltis, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 9764:
Complex Light and Optical Forces X
Jesper Glückstad; David L. Andrews; Enrique J. Galvez, Editor(s)

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