Process for the production of an optical element from glass
AssigneeDocter Optics SE
InventorsChristoph Dittmann, Alexander Kuppe, Annegret Diatta, Ralf Polle, Toni Schnoor, Sven Fröhlich
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Abstract
The present disclosure relates to a method for producing an optical element (202), wherein a blank of transparent material 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 to form the optical element (202), in particular on both sides, and is then sprayed with a surface treatment agent.
Claims28
A method of producing a headlight lens, the method comprising:
- heating a blank made of soda-lime glass;
- providing a surface-treatment agent which comprises a solvent and a solid dissolved in the solvent, wherein the solid comprises at least one solid from the group consisting of aluminum, aluminum chloride, aqueous aluminum chloride, aluminum salt, fatty-acid aluminum salts, phosphate, potassium phosphate, sodium phosphate, KO2, KOH, KNO3, silicate, SiO2, potassium silicate and potassium;
- providing a gas;
- generating a spray mist by thoroughly mixing the surface-treatment agent with the gas;
- providing a first mold;
- providing at least a second mold;
- providing a cooling path;
- press-molding the heated blank to form a headlight lens having at least a first optically active surface by means of the first mold and the at least a second mold;
- spraying the at least first optically active surface with the spray mist;
- and
- cooling the headlight lens in accordance with a cooling regime in the cooling path by adding heat.
A method of producing a headlight lens, the method comprising:
- providing a heated blank made of soda-lime glass;
- providing a solvent;
- providing a solid;
- providing a gas;
- dissolving the solid in the solvent;
- then generating a sulfur-comprising spray mist by thoroughly mixing the solvent with the gas;
- providing a first mold;
- providing at least a second mold;
- providing a cooling path;
- press-molding the heated blank to form a headlight lens having at least a first optically active surface using the first mold and the at least second mold;
- spraying the first optically active surface with the spray mist;
- and
- cooling the headlight lens in accordance with a cooling regime in the cooling path with addition of heat.
A method of producing an optical element, the method comprising:
- heating a blank made of glass;
- providing a surface-treatment agent which comprises a solvent and a solid dissolved in the solvent, wherein the solid comprises at least one solid from the group consisting of fatty-acid aluminum salts and phosphate;
- providing compressed air;
- providing a mixing nozzle;
- generating a spray mist using the mixing nozzle to mix the surface-treatment agent with the compressed air;
- providing a first mold;
- providing at least a second mold;
- press-molding the heated blank to form an optical element having a first optically active surface using the first mold and the at least second mold;
- spraying the at least first optically active surface with the spray mist;
- and
- cooling the optical element in accordance with a cooling regime with addition of heat.
Dependencies are inferred from the claim text.