Germany · Glass making; Precision craft; Thuringian heritage
Thüringer Optisches Glas — Schott und Zeiss Tradition
The optical glass making tradition of Jena — the Thuringian city where Ernst Abbe and Otto Schott developed the first scientifically controlled optical glass formulations from 1884, in collaboration with Carl Zeiss whose optical instruments required glass of unprecedented homogeneity. The Schott-Zeiss collaboration produced the first optical glass formula library (published 1886) that made modern precision optics possible. The Glasmacher at Schott reads the correct melt homogeneity through a transmitted-light bubble-and-striae inspection that joins the CRAFT transmitted-light quality family at the optical glass precision end.
Risk level: Stable · Not listed; Schott-Zeiss-Abbe heritage is on the Thuringian cultural heritage inventory; Zeiss Foundation is a significant cultural institution
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