A method for manufacturing an optical element out of glass comprises placing a blank made of glass on an annular contact face of a supporting body having a hollow cross section. The blank is heated on the supporting body in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region. The blank is press molded to form the optical element.
Method for manufacturing an optical element out of glass
2023-05-09
Patent
Elektronische Ressource
Englisch
IPC: | C03B Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle , MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES |
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