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DOE OSTI · 1650882

System and method for computed axial lithography (CAL) for 3D additive manufacturing

Kelly, Brett·Panas, Robert Matthew·Shusteff, Maxim·Spadaccini, Christopher M.·Taylor, Hayden·Bhattacharya, Indrasen
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Abstract

A method of forming a three dimensional (3D) object is disclosed. The method may involve providing a volume of photo-curable resin contained within an optically transparent resin container, and simultaneously directing optical projections from an optical subsystem at a plurality of angles θ through the volume of photo-curable resin. The optical beams are directed about a z axis extending through the volume of photo-curable resin. Each of the projections is provided with a calculated 2D spatial intensity function which creates a 3D intensity map. The projections act over a fixed temporal exposure period, during which the net exposure dose is sufficient to cure select portions of the volume of photo-curable resin, and to leave other portions uncured, to form a desired 3D part.

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36 MATERIALS SCIENCE

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Kelly, Brett, Panas, Robert Matthew, Shusteff, Maxim, Spadaccini, Christopher M., Taylor, Hayden, Bhattacharya, Indrasen. 2020-05-12. System and method for computed axial lithography (CAL) for 3D additive manufacturing. https://www.osti.gov/biblio/1650882

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36 MATERIALS SCIENCE↗