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9 March 2022 Ray-based distortion correction in tomographic additive manufacturing
Antony Orth, Kathleen Sampson, Kayley Ting, Derek Aranguren van Egmond, Kurtis Laqua, Daniel Webber, Thomas Lacelle, Dorothy Fatehi, Jonathan Boisvert, Chantal Paquet
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Proceedings Volume PC12014, Emerging Digital Micromirror Device Based Systems and Applications XIV; PC1201403 (2022) https://doi.org/10.1117/12.2609895
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Tomographic printing is a 3D printing technique that enables fast, supportless fabrication wherein light is projected through a rotating vial containing a photocurable resin. Usually, vial is placed in an index-matching bath to eliminate refraction at the vial surface. In this talk we will describe our approach to build an easy-to-use tomographic printing system that eliminates the index-matching bath. We use a computational ray-tracing approach to pre-distort projection images to exactly counteract the distortion from refraction at the air/vial interface and projector non-telecentricity. We will show simulation and print examples and expand on recent improvements in our system.
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Antony Orth, Kathleen Sampson, Kayley Ting, Derek Aranguren van Egmond, Kurtis Laqua, Daniel Webber, Thomas Lacelle, Dorothy Fatehi, Jonathan Boisvert, and Chantal Paquet "Ray-based distortion correction in tomographic additive manufacturing", Proc. SPIE PC12014, Emerging Digital Micromirror Device Based Systems and Applications XIV, PC1201403 (9 March 2022); https://doi.org/10.1117/12.2609895
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KEYWORDS
Tomography
Additive manufacturing
Distortion
Index matching antireflective coatings
Projection systems
Refraction
Metrology
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