Schott Ag

Doctor Optics Se

Rainer Adebahr

Ralf Bonitz

Christian Kunert

Doris Moseler

Polina Ebeling

Dirk Weidmann

Matthias Redey

Frank Peters

The method for making a lens with a first convex lens surface () and a second lens surface () includes feeding a glass melt drop into a concave mold (), precise pressing both sides of the glass melt drop in the concave mold () together with a press die () and immersing the press die () in the glass melt drop so that a supporting rim () with predetermined dimensions, which protrudes beyond a highest point of the second lens surface (), is formed on the lens by glass material displaced by the precise pressing. The apparatus for precise pressing includes an upper mold part () a lower mold part () and the press die ().

Method for making a lens using an apparatus for precise pressing both sides of the lens

The device for blank pressing glass bodies includes a first rotary indexing table with preforms for forming parisons from glass gobs; a second rotary indexing table having pressing molds and pressing tools for pressing the parisons into final form after formation in the preforms; and a device for shifting the first rotary indexing table relative to the second rotary indexing table so that each preform is positionable in a transfer position between a pressing tool and a pressing mold. Each preform is mounted on the first rotary indexing table by a indexable mount for holding it in a first horizontal position or in a second position pivoted away from the first position, so that, when a preform is in the transfer position, the indexable mount can be pivoted, so that a parison in it drops into the pressing mold for pressing by the pressing tool.

Device for blank pressing optical glass bodies

The plano-convex lens of a projection headlight has a holding edge () integrally formed on an outer lens edge and a supporting edge () projecting from its plane surface () and formed integrally with the holding edge (). The supporting edge () and the holding edge () form a continuous cylindrical outer circumferential surface () extending over their outer sides. The convex surface () and the plane surface () of the lens are bright pressed surfaces so that the grinding and polishing steps usually used in making the lens can be eliminated. The method of manufacturing the lens including bright pressing the convex and plane surfaces is also part of the invention.

Lens and projection headlight of a motor vehicle including same

Growing community of inventors

Gruenenplan, Germany

Rainer Adebahr