Schott Ag

Schott Glas

Christoph Hermanns

Heinrich Ostendarp

Bernd Hoetzel

Dirk Hauer

Georg Geissler

Juergen Stein

Andrew Blunck

Ralf Steinfartz

Dietrich Mund

Eric Senner

Noboru Kobayashi

Patrick Markschläger

Uwe Nolte

Danielzik Burkhard

Ingo Köhler

Christian Dietz

Christian Thiemann

Robert Fuerst

In the method of producing smaller, sheet glass plates having a predetermined geometry and lateral dimensions in the millimeter range from a larger sheet glass plate, a joining material is imprinted on one side of the larger sheet glass plate in accordance with a joining zone geometry of the smaller, sheet glass plates. Dividing lines along which the smaller, sheet glass plates are separated are specified on the larger sheet glass plate. Then the smaller, sheet glass plates are separated along the dividing lines together with the imprinted joining material into individual sheet glass plates.

Method for producing small, sheet glass plates and larger sheet glass plates as semifinished products for producing the former

Method for connecting an optical fiber to a GRIN lens, and a method for producing an optical filter module having an optical fiber and a GRIN lens, comprising arranging the optical fiber in contact with or in the immediate vicinity of the GRIN lens, directing a laser beam onto a part of the optical fiber and/or a part of the GRIN lens, the laser beam heating at least a part of the optical fiber and/or a part of the GRIN lens in such a way that a connection is formed between the optical fiber and the GRIN lens, and the optical axis of the laser beam being aligned oblique to the optical axis of the optical fiber, as well as optical filter modules produced in accordance with the method.

Method for connecting an optical fiber to a grin lens, and a method for producing optical filter modules and filter modules produced according to said method

The method and apparatus for cutting through flat workpieces made of glass can cut through workpieces with greater thickness, e.g. glass panes with a thickness greater than 0.2 mm, than possible up to now with a comparable known method, without micro-fractures, glass fragments or splitter. In the method of the invention a heat radiation spot symmetric to the cutting line is produced on the workpiece. This heat radiation spot has edge portions with elevated radiation intensity and is moved along the cutting line on the workpiece and the heated section of the cutting line is subsequently cooled. A scanner motion produces the heat radiation spot so that edge portions of elevated radiation intensity coincide with a V- or U-shaped curve, which is open at the leading end of the heat radiation spot. The peak portion of the V- or U-shaped curve on the cutting line is at a temperature maximum that is under the melting point of the workpiece material. A controller of the scanning motion controls the scanner in circular cutting and freeform cutting so that a curved V- or U-shaped intensity distribution which fits the curved cutting path arises.

Method and apparatus for cutting through a flat workpiece made of

The method and apparatus for cutting through flat workpieces made of glass can cut through workpieces with greater thickness, e.g. glass panes with a thickness greater than 0.2 mm, than possible up to now with a comparable known method, without micro-fractures, glass fragments or splitter. In the method of the invention a heat radiation spot symmetric to the cutting line is produced on the workpiece. This heat radiation spot has edge portions with elevated radiation intensity and is moved along the cutting line and/or the workpiece and the heated section of the cutting line is subsequently cooled. A scanner motion produces the heat radiation spot so that edge portions of elevated radiation intensity coincide with a V- or U-shaped curve, which is open at the leading end of the heat radiation spot. The peak portion of the V- or U-shaped curve on the cutting line is at a temperature maximum that is under the melting point of the workpiece material. A controller of the scanning motion controls the scanner in circular cutting and freeform cutting so that a curved V- or U-shaped intensity distribution which fits the curved cutting path arises.

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Mainz, Germany

Christoph Hermanns