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US 11,932,566 B2Granted
Process for manufacturing an optical element from glass
AssigneeDocter Optics SE
InventorsAnnegret Diatta, Sven Fröhlich, Markus Winkler
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Abstract
The disclosure relates to a method for manufacturing an optical element, where a blank of glass is heated and/or provided and, after heating and/or after being provided between a first mold (UF) and at least one second mold (OF), is press molded, for example on both sides, to form the optical element and is then sprayed with a surface treatment agent.
Claims25
A method for producing a headlight lens, the method comprising:
- providing a first mold;
- providing at least one second mold;
- providing a cooling path;
- providing a chamber;
- providing a surface-treatment agent which comprises a solvent and a solid dissolved in the solvent, wherein the solid comprises an amount of ammonium sulfate;
- providing a gas;
- heating a blank made of soda-lime glass;
- press-molding the heated blank to form the headlight lens having at least one first optically effective surface using the first mold and the at least one second mold;
- placing the headlight lens in the chamber;
- generating a spray by thoroughly mixing the surface-treatment agent with the gas;
- in the chamber, exposing the at least one first optically effective surface to the spray which promotes crosslinking of oxygen ions with silicon ions on the at least one first optically effective surface;
- and
- then, cooling the headlight lens in accordance with a cooling regime in the cooling path with the addition of heat to prevent any internal stress within the headlight lens.
10 more elements
A method for producing a headlight lens, the method comprising:
- providing a first mold;
- providing at least one second mold;
- providing a cooling path;
- heating a blank made of soda-lime glass;
- press-molding the heated blank to form the headlight lens having at least one first optically effective surface using the first mold and the at least one second mold;
- spraying the at least one first optically effective surface with a surface-treatment agent which promotes cross linking of oxygen ions with silicon ions on the at least one first optically effective surface, wherein the surface-treatment agent comprises a solvent and a solid dissolved in the solvent, wherein the solid comprises an amount of ammonium sulfate;
- and
- then, cooling the headlight lens in accordance with a cooling regime in the cooling path with the addition of heat to prevent any internal stress within the headlight lens.
5 more elements
Dependencies are inferred from the claim text.