Fabrication test of reflective complex optical structure by 3D printing

Lihong Liu; Thierry Engel; Amadou Coulibaly; Denis Cavallucci; Pierre Pfeiffer; Grégoire Chabrol; Stephane Roques; Manuel Flury

doi:10.1117/12.2307503

22 May 2018 Fabrication test of reflective complex optical structure by 3D printing

Lihong Liu, Thierry Engel, Amadou Coulibaly, Denis Cavallucci, Pierre Pfeiffer, Grégoire Chabrol, Stephane Roques, Manuel Flury

Author Affiliations +

Proceedings Volume 10675, 3D Printed Optics and Additive Photonic Manufacturing; 106750R (2018) https://doi.org/10.1117/12.2307503
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

We study the possibility of the fabrication of faceted structure with a standard additive fabrication technology using the 3D printer of Objet30 Prime series from Stratasys. The structure contains a small number of facets with size in millimeter: these facets are inclined in two directions. We use analytical expression to solve the tilt angles recorded into a matrix. After obtaining the desired illumination pattern, we try to fabricate the structure with a standard and commercial additive fabrication methods (3D printing) to make a master. We create the STL file usable for the 3D Printer. First tests were made with the printer of the Stratasys Model Objet30 Prime using the material of VeroWhite Plus FullCure 835 and the support model of FullCure 705 from FABLAB at INSA Strasbourg. The common dimension of the element is 6 × 6 facets, where one facet is in millimeter. As printing is conducted with the material of VeroWhite, the quality of the surface profile of the printed model is not sufficient for direct optical applications due to the porous property of the material. As a result, square silicon mirrors are cut and coated with a 100 nm aluminum layer in a second step. Professional adhesive of NHU series from Hart Kunststoff, Germany is used to glue the mirrors on the faceted structure with delicate operation. Then the surface profile of the glued mirrors on the faceted structure is measured with a Zygo Newview 7200 profilometer. A first optical test gives interesting results, but not sufficient for our applications, but this work is an innovation and can give new creativity at the frontier of design and optical applications.

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Lihong Liu, Thierry Engel, Amadou Coulibaly, Denis Cavallucci, Pierre Pfeiffer, Grégoire Chabrol, Stephane Roques, and Manuel Flury "Fabrication test of reflective complex optical structure by 3D printing", Proc. SPIE 10675, 3D Printed Optics and Additive Photonic Manufacturing, 106750R (22 May 2018); https://doi.org/10.1117/12.2307503

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KEYWORDS

3D printing

Mirrors

Reflectivity

Optical fabrication

Additive manufacturing

Ocean optics

Tolerancing

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