Patent ID: 11932566
Assignee: DOCTER OPTICS SE
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. 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.