Schott Ag

Schott Glas

Carl-zeiss-smt Ag

Carl Zeiss Jena Gmbh

Schott Glaswerke

F. Hoffmann-la Roche Ag

Schott Pharma Schweiz Ag

Schott Pharma Ag & Co Kgaa

Frank-Thomas Lentes

Andreas Ortner

Fabian Wagner

Albrecht Seidl

Jens Ulrich Thomas

Ulrich Peuchert

Michael Kluge

Karin Naumann

Andreas Roters

Lutz Parthier

Steffen Reichel

Wolfgang Schmidbauer

Kurt Nattermann

Matthias Jotz

Volker Plapper

Simone Monika Ritter

Andreas Langsdorf

Uwe Kolberg

Werner Kiefer

Jochen Alkemper

Markus Heiss-Chouquet

Thorsten Damm

Wolfram Beier

Rainer Erwin Eichholz

Doris Moseler

Volker Ohmstede

Robert Frost

Wolfgang Singer

Friedrich Siebers

Joseph S Hayden

Michael Gerhard

Evelin Weiss

Burkhard Speit

Christian Mueller

Martin Letz

Christof Fattinger

Meike Schneider

Ulf Dahlmann

Erich Rodek

Christian Schenk

Jose Zimmer

Michael Weisser

Martin Heming

Frank Buellesfeld

Ingo Schwirtlich

Norbert Greulich-Hickmann

Volker Trinks

Simon Schmitt

Günter Weidmann

Holger Hunnius

Florian Resch

Jonas Schatz

Laura Brückbauer

Hildegard Römer

Alexander Humbertjean

Peter Naß

Roman Huhn

Jörn Gerban

Christoph Berndhaeuser

Hans Duerolf

Niklas Bisch

Hildegard R&ouml;mer

Burkhard Danielzik

Carsten Weinhold

Ulrich Schiffner

Klaus-Dieter Duch

Gunther Wehrhan

Michael Leister

Petra Auchter-Krummel

Klaus Schoenberger

José Zimmer

Dieter Graefe

Matthias Mueller

Yoshio Okano

Joerg Witte

Ewald Moersen

Guido Räke

Vanessa Hiller

Guido R&auml;ke

Klaus Schönberger

Tobias Wetzel

Dirk Gohlke

Nikolaus Schultz

Antoine Carré

Gabriele Roemer-Scheuermann

Ernst-Walter Schaefer

Laura Brueckbauer

Uwe Sahr

Christian Kusch

Frank Karetta

Wolfgang Muench

Reinhard Männl

Joe Hayden

Stefan Schmitt

Vanessa Gläßer

Patrick Hoyer

Peter Elzner

Hans-Joerg Axmann

Hildegard Roemer

Guido Raeke

A component includes a glass or glass ceramic having a thickness and a plurality of predamages. Each predamage of the plurality of predamages has a longitudinal axis and passes continuously through the thickness of the glass or the glass ceramic. The component also includes a material compaction of the glass or glass ceramic that is at least 1% relative to an actual material density in a radius of 3 μm about the longitudinal axis of each predamage so that the glass or the glass ceramic has a relative weight loss per predamage that is less than 10%.

Components made of glass or glass ceramic having predamage along predetermined dividing lines

A method provides for producing modifications in or on a transparent workpiece using a laser processing device. The laser processing device has a short pulse or ultrashort pulse laser that emits laser radiation having a wavelength in the transparency range of the workpiece and which has a beam-shaping optical unit for beam shaping for focusing the laser radiation. The transparent workpiece is composed of a material that has a plurality of phases, of which at least two phases have different dielectric constants, of which in turn the one phase is a phase embedded in the form of particles, which phase is substantially surrounded by the other phase, and wherein the product of the volume of the particles specified in cubic nanometers and the ratio of the absolute value of the difference of the two different dielectric constants to the dielectric constant of the surrounding phase is greater than 500.

Laser processing of a multi-phase transparent material, and multi-phase composite material

A method for preparing a workpiece for separation is provided that includes providing a workpiece that is transparent for light of a pulsed laser beam, splitting the laser beam into two partial beams using an optical system, directing both partial beams onto the workpiece, and moving the workpiece and the partial beams relative to one another. The partial beams are directed onto the workpiece incident at different angles to the normal of the irradiated surface and superimposed inside the workpiece such that the partial beams interfere with one another to form a sequence of intensity maxima inside the workpiece. The intensity at the intensity maxima is sufficiently high to modify the material of the workpiece so that a chain-like periodic pattern of material modifications is formed along a path defining a separation line.

Methods and devices for introducing separation lines into transparent brittle fracturing materials

A method includes: providing a plate-like glass element having side faces and an ultrashort pulse laser having a laser beam; directing the laser beam onto one of the side faces; concentrating the laser beam by focusing optics to form an elongated focus in the glass element; producing a filament-shaped flaw in a volume of the glass element by a radiated-in energy of the laser beam, a longitudinal direction of which runs transverse to one of the side faces, and the ultrashort pulse laser radiates in a pulse or a pulse packet having at least two successive laser pulses to produce the filament-shaped flaw; widening the filament-shaped flaw to form a channel by exposing the glass element to an etching including an etching medium which removes glass at a rate of less than 8 μm per hour; and introducing rounded, hemispherical depressions in a wall of the channel by the etching.

Structured plate-like glass element and process for the production thereof

Devices and methods for processing a workpiece along a predetermined processing line are provided. The device includes: a pulsed, polychromatic laser beam generator; an optical arrangement; and a moving device. The laser beam generator generates a laser beam along a beam direction. The optical arrangement generates a focal line along the beam direction. The optical arrangement has a chromatic aberration for wavelength-dependent focusing of the laser beam and a filter for wavelength-dependent filtering of the laser beam. The moving device generates relative movement between the laser beam and the workpiece along the predetermined processing line.

Device and method for processing a workpiece along a predetermined processing line using a pulsed polychromatic laser beam and a filter

A glass container is provided that includes a tube, a circular bottom, and a longitudinal axis. A curved glass heel extends from an outer end the bottom to the first end of the tube. The outer surface has a topography defined by a function ĥ(x) that is an azimuthal average of a distance between a contact plane and the outer surface at any given position located on a circle having the centre and the radius |x|. The values ĥ for ĥ(x) are determined for a plurality of circles the radius of which increases stepwise by 500 μm starting with a circle around the centre having a radius of 500 μm. The values ĥ are determined in a range from x=−0.4×d/2 to x=+0.4×d/2, dhaving a size such that at least 4 values ĥ are determined and can be fitted with a curvature function

Glass container comprising a glass bottom with improved properties

A method for separating a portion from a sheet glass element having a thickness of at least 2 millimeters along an intended separation line that divides the sheet glass element into the portion and a remaining main part is provided. The method includes producing filamentary damages comprising sub-micrometer hollow channels in a volume of the glass sheet element adjacently aligned along the separation line; and heating and/or cooling the glass sheet element to cause expansion and/or contraction so that the portion detaches from the main part along the separation line. The portion and the remaining main part each remain intact as a whole. The step of producing the filamentary damages includes generating a plasma within the volume with laser pulses of an ultrashort pulse laser; and displacing points of incidence of the laser pulses over a surface of the glass sheet element along the separation line.

Method and device for laser-assisted separation of a portion from a sheet glass element

A plate-like glass element includes a pair of opposite side faces and an opening having a transverse dimension of at least 200 μm. The opening is delimited by an edge. The edge has a plurality of rounded, substantially hemispherical depressions that adjoin one another. The plurality of rounded, substantially hemispherical depressions having abutting concave roundings which form ridges.

A component of glass or glass ceramic having predamages arranged along at least one predetermined dividing line is provided. The dividing line has a row of predamages lying one behind the other. The predamages pass continuously through the glass or the glass ceramic with at least 90% of the predamages being cylindrically symmetrical. The glass or the glass ceramic has a material compaction of at least 1% relative to an actual material density in a radius of 3 μm about a longitudinal axis of respective pre-damaged points. The relative weight loss per pre-damaged point is less than 10% and the component has a thickness of at least 3.5 mm.

A method and apparatus for producing glass products from tubular glass precursors is provided. In particular, a method and apparatus for separating tube glass into sized glass tube portions, produced glass tube portions, glass precursor portions, or glass product portions, and their use as pharmaceutical packaging are provided. The tube glass or the glass precursor or the glass product is provided with filaments along predetermined breaking planes. The filaments extend obliquely to the local wall radius and allow for clean separation of the tube glass or the glass precursor or the glass product.

Method and apparatus for producing glass precursors and glass products

A method is provided that includes producing filamentary damages in a volume of a glass or glass ceramic element adjacently aligned along a separation line and extend obliquely relative to a surface of the glass or glass ceramic element; and separating a portion from the glass or glass ceramic element along the separation line. The step of producing the filamentary damages includes directing laser pulses of an ultrashort pulse laser obliquely on the surface so that the laser pulses have a light propagation direction that extends obliquely relative to the surface and so that the filamentary damages resulting from the laser pulses have the longitudinal extension that extends obliquely relative to the surface; generating a plasma within the volume with the laser pulses; and displacing the laser pulses at points of incidence over the surface along the separation line.

Method and device for separation of glass portions or glass ceramic portions

A glass container is provided that includes a tube, a circular bottom, and a longitudinal axis. A curved glass heel extends from an outer end the bottom to the first end of the tube. The two-dimensional distance h(x,y) between a contact plane and the outer surface. The two-dimensional distance is measured in a direction parallel to the axis. The slope magnitude of the outer surface at the given position x,y is given by&#x221a;{square root over ((dh/dx)+(dh/dy))}.The 75% quantile of values that have been determined for the term&#x221a;{square root over ((dh/dx)+(dh/dy))}&#xd7;d1/h(xy)for all given positions x,y within a circular area having a radius of 0.4&#xd7;d/2 and that correspond to the centre is less than 4100 &#x3bc;m/mm. The adjacent positions x,y increase stepwise by 200 &#x3bc;m, and h(x,y)=h(x,y)&#x2212;h(x,y), h(x,y)is a maximum value for h(x,y) and h(x,y)is a minimum value for h(x,y) being determined in that circular area.

An optical layered composite includes: a substrate having a front face, a back face, a thickness dbetween the front face and the back face and a refractive index n; and a coating applied to the front face. The coating comprises one or more coating layers. For at least one wavelength &#x3bb;in the range from 390 nm to 700 nm, the coating satisfies one of the following criterion: n&#x3c;n; or n&#x3e;n, and nis a mean refractive index of the coating layers, weighted by thickness; do is a total thickness of the coating; thicknesses are determined in a direction perpendicular to the front face; and k=&#x3bb;/4&#x3c0;.

Optical layered composite having a coating thickness below a threshold and its application in augmented reality

The present disclosure provides a device and a method for laser-based separation of a transparent, brittle workpiece, comprising a laser that emits a laser beam having an intensity (I) along an optical axis (P), and an optical device. The optical device has at least one one-piece double axicon. The double axicon has an entrance surface and the optical device has an exit surface. The entrance surface is such that in the double axicon, a ring beam is formed. The intensity (I) in the double axicon is lower than the threshold intensity (I) of the material of the double axicon. The exit surface is such that a line focus having a maximum intensity (I) and a length (L) is generated in the direction of the laser beam behind the exit.

Device and method for laser-based separation of a transparent, brittle workpiece

A method for separating a substrate of a brittle-hard material is provided. The method includes the steps of introducing defects into the substrate at a spacing from one another along a separation line using at least one pulsed laser beam; selecting an average spacing between neighboring defects and a number of laser pulses for generating a respective defect such that a breaking stress (&#x3c3;) for separating the substrate along the separation line is smaller than a first reference stress (&#x3c3;) of the substrate and such that an edge strength &#x3c3;of the separation edge obtained after separation is greater than a second reference stress (&#x3c3;) of the substrate; and separating the substrate after introducing the defects by applying a stress along the separation line.

Method for separating substrates

Growing community of inventors

Bingen, Germany

Frank-Thomas Lentes