| 1846 | Carl Zeiss founds a workshop for precision mechanics and optics in Jena |
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| 1847 | Production of microscopes |
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| 1866 | Start of collaboration between Ernst Abbe and Carl Zeiss |
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| 1872 | Abbe’s theory of image formation in the microscope leads to fundamentally improved microscopes. This theory and the “sine condition” now bearing Abbe’s name form the basis of all modern, high performance optics |
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| 1884 | Founding of the subsequent Jenaer Glaswerks Schott & Genossen (today: SCHOTT AG) by Otto Schott, Ernst Abbe, Carl Zeiss and Roderich Zeiss |
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| 1889 | Founding of the Carl Zeiss Foundation by Ernst Abbe |
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| 1891 | Ernst Abbe makes the Carl Zeiss Foundation the sole owner of the Zeiss Works |
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| 1900 | Already of considerable economic importance, in the first half of the 20th century Carl Zeiss develops into a leading optics enterprise with activities all over the world |