Schott Ag

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Schott Pharma Schweiz Ag

Friedrich-Schiller-Universitaet Jena

Schott Pharma Ag & Co Kgaa

Fried-schiller-universitaet Jena

Friedrich-Schiller-Universitat Jena

Schott Primoceler Oy

Jens Ulrich Thomas

Frank-Thomas Lentes

Andreas Ortner

Michael Kluge

Kurt Nattermann

Robert Hettler

Yutaka Onezawa

Antti Määttänen

Thomas Zetterer

Jonas Schatz

Andreas Langsdorf

Thorsten Damm

Andreas Tuennermann

Doris Moseler

Günter Weidmann

Robert Frost

Alexander Humbertjean

Stefan Nolte

Fabian Wagner

Jens Limpert

Albrecht Seidl

Andreas Tünnermann

Volker Plapper

César Jáuregui Misas

Simon Schmitt

Nikolaus Schultz

Roman Huhn

Christian Voigtlaender

Fabian Stutzki

Peter Naß

Tobias Wetzel

Oliver Sohr

David Sohr

Andreas Koglbauer

Christian Voigtländer

Robert Williams

Clemens Kunisch

Jochen Herzberg

Boris Eichhorn

Ossi Lahtinen

Lukas Grohmann

Heidi LUNDÈN

Ville Polojärvi

A method for preparing and/or carrying out the structuring of a predetermined or predeterminable distinguished surface of a substrate body having a substrate material includes exposing the substrate material in at least one curved effective area to an electromagnetic field which in each of the at least one curved effective area causes a non-linear interaction between the electromagnetic field and the substrate material, and thus at least partially influencing the substrate material arranged in the curved effective area. After the structuring of the distinguished surface the distinguished surface has at least in certain areas at least one first curved progression which is at least partially determined and/or influenced by the curved shape of the at least one curved effective area. The nonlinear interaction causes at least one nonlinear absorption of the electromagnetic field in the substrate material.

Method of surface structuring a substrate body and substrate body

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 for providing a plurality of hermetically sealed packages, including the steps of: providing at least two substrates including a first substrate and a second substrate, at least one of the at least two substrates being a transparent substrate, the two substrates being arranged directly adjoining each other or on top of one another, the transparent substrate defining a circumferential rim and an upper side of each package, the bottom of the package being defined by the second substrate, a respective contact area being defined at contact surfaces between the two substrates; sealing each functional area in a hermetically tight manner by bonding the two substrates along the contact area of each package; and dicing each package by a cutting step or a separating step, a particle jet being used to abrasively remove a material from the transparent substrate by the particle jet.

Hermetically sealed transparent cavity and package for same

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

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 hermetically sealed package includes: a base substrate and a cover substrate which define at least part of the package, the base substrate and the cover substrate being hermetically sealed to one another by at least one laser bonding line, the at least one laser bonding line having a height perpendicular to its bonding plane, at least the cover substrate including a toughened layer at its surface, at least on a side opposite the at least one laser bonding line; and at least one functional area enclosed in the package.

Hermetically sealed, toughened glass package and method for producing same

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 hermetically sealed package includes: at least one cover substrate and a substrate arranged so as to adjoin the at least one cover substrate, which together define at least part of the package, the at least one cover substrate being in a thermally prestressed state and bonded to the substrate adjoining the at least one cover substrate in a hermetically sealing manner by at least one laser bonding line, the at least one cover substrate being made of a material which has a different characteristic value of a coefficient of thermal expansion than the adjoining substrate and a thermal prestress is established in the package; and at least one functional area enclosed in the package.

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 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 &#x3bc;m 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.

The present disclosure relates to a layered optical composite, in particular for use in an augmented reality device. In particular, the disclosure relates to a layered optical composite and a process for its preparation, a device comprising the layered optical composite and a process for its preparation, and the use of a layered optical composite in an augmented reality device. The present disclosure relates to a layered optical composite comprising:

Layered optical composite having a reduced content of highly refractive layers and its application in augmented reality

The invention relates to a mode filter for reducing higher-order modes, with an optical fiber (), which has a core () and a cladding () surrounding the latter, wherein the cladding () and core () have refractive indices that differ from one another. In order to develop an alternative to the prior art, the mode filter according to the invention is designed in such a manner that the fiber () has, in a transition region () between core () and cladding (), at least one local refractive index modification region () which is arranged in the radially outer region of the core () and extends into the region of the cladding ().

Mode filter with refractive index modification

Growing community of inventors

Stralsund, Germany

Jens Ulrich Thomas