Details
| Original language | English |
|---|---|
| Title of host publication | Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI |
| Editors | Georg von Freymann, Eva Blasco, Debashis Chanda |
| Publisher | SPIE |
| ISBN (electronic) | 9781510659711 |
| Publication status | Published - 15 Mar 2023 |
| Event | Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI 2023 - San Francisco, United States Duration: 28 Jan 2023 → 3 Feb 2023 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 12433 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
Integrated optics are an innovation driver for a multitude of industrial applications like autonomous driving or point-of-care diagnostics. With the increasing demand for miniaturized, low-cost optical systems, new methods for fabricating tailored graded index micro-optics are required. Additive manufacturing is a promising technology for this not only due to its high design freedom, but also because of the potential for function integration via multi-material printing or the integration into digitized process chains. In fact, additive manufacturing of optical elements has not matured yet due to the requirement to fabricate 3D objects with optical quality. In this contribution, µ-dispenser direct ink writing based on transparent photopolymers is presented that enables the production of multi-material micro-optical elements. It will be shown that the achievable printing resolution for 0D- and 1D-structures is mainly depending on the needle diameter. Mono-material spherical and cylindrical lenses with a geometric dimension in the range of a few micrometers have been successfully fabricated and characterized. The geometric shape fidelity of printed 2D-layers, which suffers from surface tension effects due to the material’s molecular cohesive forces, is optimized by proper printing strategies. In an outlook, the route towards the production of micro-optic, function-integrated 3D GRIN elements is given, by using a mixer module to realize combined and gradable extrusion of two photopolymers.
Keywords
- 3D printing, additive manufacturing, direct ink writing, GRIN optics, polymer optics
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
Cite this
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Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI. ed. / Georg von Freymann; Eva Blasco; Debashis Chanda. SPIE, 2023. 124330D (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12433).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Multi-material additive manufacturing based on µ-dispenser technology for tailored polymer micro-optics
AU - Kranert, Fabian
AU - Finkenbrink, Alexander Schulze
AU - Hinkelmann, Moritz
AU - Neumann, Jörg
AU - Kracht, Dietmar
N1 - Funding Information: The experiments were founded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453).
PY - 2023/3/15
Y1 - 2023/3/15
N2 - Integrated optics are an innovation driver for a multitude of industrial applications like autonomous driving or point-of-care diagnostics. With the increasing demand for miniaturized, low-cost optical systems, new methods for fabricating tailored graded index micro-optics are required. Additive manufacturing is a promising technology for this not only due to its high design freedom, but also because of the potential for function integration via multi-material printing or the integration into digitized process chains. In fact, additive manufacturing of optical elements has not matured yet due to the requirement to fabricate 3D objects with optical quality. In this contribution, µ-dispenser direct ink writing based on transparent photopolymers is presented that enables the production of multi-material micro-optical elements. It will be shown that the achievable printing resolution for 0D- and 1D-structures is mainly depending on the needle diameter. Mono-material spherical and cylindrical lenses with a geometric dimension in the range of a few micrometers have been successfully fabricated and characterized. The geometric shape fidelity of printed 2D-layers, which suffers from surface tension effects due to the material’s molecular cohesive forces, is optimized by proper printing strategies. In an outlook, the route towards the production of micro-optic, function-integrated 3D GRIN elements is given, by using a mixer module to realize combined and gradable extrusion of two photopolymers.
AB - Integrated optics are an innovation driver for a multitude of industrial applications like autonomous driving or point-of-care diagnostics. With the increasing demand for miniaturized, low-cost optical systems, new methods for fabricating tailored graded index micro-optics are required. Additive manufacturing is a promising technology for this not only due to its high design freedom, but also because of the potential for function integration via multi-material printing or the integration into digitized process chains. In fact, additive manufacturing of optical elements has not matured yet due to the requirement to fabricate 3D objects with optical quality. In this contribution, µ-dispenser direct ink writing based on transparent photopolymers is presented that enables the production of multi-material micro-optical elements. It will be shown that the achievable printing resolution for 0D- and 1D-structures is mainly depending on the needle diameter. Mono-material spherical and cylindrical lenses with a geometric dimension in the range of a few micrometers have been successfully fabricated and characterized. The geometric shape fidelity of printed 2D-layers, which suffers from surface tension effects due to the material’s molecular cohesive forces, is optimized by proper printing strategies. In an outlook, the route towards the production of micro-optic, function-integrated 3D GRIN elements is given, by using a mixer module to realize combined and gradable extrusion of two photopolymers.
KW - 3D printing
KW - additive manufacturing
KW - direct ink writing
KW - GRIN optics
KW - polymer optics
UR - http://www.scopus.com/inward/record.url?scp=85159787485&partnerID=8YFLogxK
U2 - 10.1117/12.2649849
DO - 10.1117/12.2649849
M3 - Conference contribution
AN - SCOPUS:85159787485
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI
A2 - von Freymann, Georg
A2 - Blasco, Eva
A2 - Chanda, Debashis
PB - SPIE
T2 - Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI 2023
Y2 - 28 January 2023 through 3 February 2023
ER -