3D printing apparatus and 3D printing method for manufacturing a workpiece

US12319000B2 · kind B2 · utility

Assignee

• Carl Zeiss Vision International GmbH · DE

Inventors

• Guillaume Gomard · Mannheim, DE
• Bernd Borrmann · Zöllnitz, DE
• Matthias Hillenbrand · Jena, DE
• Michael Totzeck · Schwäbisch Gmünd, DE
• Roman Zvahelskyi · Karlsruhe, DE
• Marc Frederik Mayer · Karlsruhe, DE
• Martin Wegener · Tauberbischofsheim, DE

Key dates

• Filing date: Aug 30, 2024
• Grant date: Jun 3, 2025
• Expiry date: Aug 30, 2044

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B33Y50/02
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A 3D printing apparatus for manufacturing a workpiece has a first radiation source to carry out a non-linear absorption polymerization and a second radiation source to carry out optical coherence tomography. A first beam path is traversed by the first radiation and a second beam path is traversed by the second radiation. The first and second beam paths are formed completely independently of one another. Further, a 3D printing method for manufacturing a workpiece, another 3D printing apparatus, and methods for analyzing the quality of a raw material of a non-linear absorption polymerization; checking an orientation of a substrate to be printed by non-linear absorption polymerization; determining a spatially resolved degree of conversion of a non-linear absorption polymerization; analyzing a structural sharpness of a structure produced by non-linear absorption polymerization; and for three-dimensional reconstruction of a workpiece manufactured by non-linear absorption polymerization are disclosed.