Research project Hybridglas SLA

Development of the Hybrid-SLA technology for the manufacturing of optical components

Project data

Project management organisation EFRE / TAB
Project number 2018 VF 0034 / 2018 FE 9097
Term 01.01.2019 - 31.12.2020



The aim of the project is the development of a new and innovative additive technology for the production of complex optical components from quartz glass. The process is based on stereolithography (SLA), in which UV-curing resins are selectively exposed to laser radiation and three-dimensional shaped bodies are built up layer by layer.

The hybrid SLA process consists of a two-stage SLA layer process in which modified glass pastes are applied in thin layers and then a second component is added with a print head. The glass pastes consist of a finely dispersed solid (SiO2) and a photosensitive binder and are specially developed for this process. The simultaneous processing of differently doped pastes should enable the construction of three-dimensionally structured components with variable geometry and composition.

The produced components are thermally debinded and glazed under active gas atmosphere in a special newly developed gas pressure sintering furnace. After a surface finish, the resulting preforms are to be warped into structured optical fibers, which is an absolute novelty. In addition, optical components are also to be manufactured as examples.