Method for producing an optical lens and optical lens produced by said method

A method for producing an optical lens with an injection mold, the method comprising:

• pre-injecting, in a first injection molding step, a first partial body in a first cavity;
• and
• injection molding, in a second injection molding step, in a second cavity, a second partial body onto the first partial body,
• wherein the first partial body and the second partial body are injection molded so as to be arranged in front of one another along a thickness axis of the optical lens,
• wherein the first partial body is injection molded, such that a thickness of the first partial body along the thickness axis is 60% to 70% of a total thickness of the optical lens along the thickness axis and the second partial body is injection molded, such that a thickness of the second partial body along the thickness axis is a remaining thickness proportion of the total thickness,
• wherein the injection mold includes a first mold part and a second mold part that are movable with respect to one another along the thickness axis,
• wherein a change from the first cavity to the second cavity occurs by an exchangeable core insert,
• wherein the exchangeable core insert includes a first core insert that is provided inside the second mold part during the first injection molding step and a second core insert that is provided inside the second mold part during the second injection molding step, and
• wherein the first core insert is removed from the second mold part after the first injection molding step and prior to inserting the second core insert into the second mold part.