Method for producing an optical element made of glass

A method for producing an optical element, the method comprising:

• providing a blank of glass;
• heating the blank of glass;
• subsequently press-molding the blank between an upper mold and a lower mold to form an intermediate molded part;
• subsequently removing the intermediate molded part from the lower mold by means of the upper mold;
• subsequently heating a surface of the intermediate molded part formed by the lower mold;
• subsequently press-molding the intermediate molded part to form the optical element;
• and
• subsequently cooling the optical element in a cooling path.

A method for producing a vehicle headlight lens, the method comprising:

• heating a blank of glass in such a manner that the temperature difference between a bottom side of the blank and a top side of the blank is not more than 100 K;
• subsequently press-molding the blank between an upper mold and a lower mold to form an intermediate molded part;
• subsequently removing the intermediate molded part from the lower mold;
• subsequently heating a surface of the intermediate molded part formed by the lower mold;
• subsequently press-molding the intermediate molded part to form the headlight lens;
• and
• subsequently cooling the headlight lens in a cooling path.

A method for producing a vehicle headlight lens, the method comprising:

• heating a blank of glass;
• press-molding the blank between an upper mold and a lower mold to form an intermediate molded part, wherein the lower mold comprises a first lower mold part and at least one second lower mold part enclosing the first lower mold part;
• removing the intermediate molded part from the lower mold;
• heating a surface of the intermediate molded part formed by the lower mold;
• press-molding the intermediate molded part to form the headlight lens;
• and
• cooling the headlight lens in a cooling path.