Schott Ag

Doctor Optics Se

Ralf Bonitz

Bernd Hoppe

Evelin Weiss

Christian Kunert

Doris Moseler

Bernd Wölfing

Ralf Biertümpfel

Wolfgang Semar

Rainer Adebahr

Matthias Redey

Polina Ebeling

Dirk Weidmann

Nicole Surges

Peter Duerolf

Michael Hahn

Ralf Biertuempel

Frank Peters

Reiner Best

Martin Schäfer

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

A method for making glass ceramic composite structures, wherein a first and at least a second glass component, with an intermediate layer of a joining solder consisting of glass placed between them, are assembled to form a raw composite structure, wherein the joining solder has a radiation absorption capacity higher than the components to be joined, and wherein the raw composite structure is irradiated with energy, for example IR energy, at least in the area of the joining solder until the joining solder has softened sufficiently to bond together the components and the joining solder to produce a composite glassy structure. Thereafter a ceramization treatment is performed.

Method for generating a glass ceramic composite structure

The invention relates to a method and an apparatus for positioning a feeder needle, and to a production line for optical components, in which a feeder needle of an apparatus for portioning fluid material, preferably softened glass, in particular of a needle feeder, has its position relative to a seat for the feeder needle recorded by means of a force-measuring device, and to further apparatuses which realize this method and to objects produced by the process.

Method and apparatus for positioning a feeder needle, and feeder

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

The optical lens, especially for a motor vehicle, is provided with a soft-focus effect, e.g. to soften a light-dark boundary on an illuminated surface. For this purpose the optical lens has an optically active surface (') provided with an embossed fine structure () extending radially outward in a direction from an optical axis (O) toward an outer periphery (P) in an undulating form and an embossed microstructure () superimposed on the embossed fine structure (). The fine structure () has a roughness that is greater than that of the microstructure (). The fine structure () preferably has a roughness of from 1 &#x3bc;m to 10 &#x3bc;m and the microstructure () has a roughness (h) in a range of from 0.1 &#x3bc;m to 2.5 &#x3bc;m.

Optical lens soft-focus effect

Growing community of inventors

Stadecken-Elsheim, Germany

Ralf Bonitz