Patent No. EP3266594 (titled "Method And Apparatus For Lithography-Based Generative Production Of Three-Dimensional Articles") was filed by Technische Universitt Wien on Jul 7, 2016. The application was issued on Mar 11, 2020.
A method for lithography-based additive manufacturing of three-dimensional components that combines high resolution with high throughput. The method involves irradiating material located between a construction platform and a tub floor with electromagnetic radiation in a location-selective manner, using a device that can vary the focal point volume during the manufacturing process. This allows for both high-resolution surface features and high-throughput interior structures to be achieved in a single manufacturing process.

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