Schott Ag

Schott Glas

Kurt Nattermann

Clemens Ottermann

Markus Heiss-Chouquet

Jens Ulrich Thomas

Frank-Thomas Lentes

Andreas Ortner

Rainer Liebald

Thorsten Damm

Andreas Habeck

Jürgen Vogt

Ulrich Peuchert

Robert Hettler

Michael Kluge

Stephan Behle

Feng He

Michael Schwall

Harry Engelmann

Matthias Jotz

Ingo Schwirtlich

Ning Da

Volker Seibert

Pengxiang Qian

Thomas Wiegel

Ewald Moersen

Vera Steigenberger

Clemens Kunisch

Thomas Roßmeier

Peter Naß

Wolfgang Moehl

Daniel Caldwell

David Sohr

Thomas Zetterer

Antti Määttänen

Yutaka Onezawa

Markus Heiß-Chouquet

Ioannis Neitzel

Reinhard Kassner

Dirk Weidmann

Sabine Lehnicke

Roland Bürkle

Ricarda Krechel

Uwe Fliedner

Wolfgang MÖHL

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 for producing long-term bendable glass material includes: bending a glass material in a bending radius in a range of 1 mm to 10mm; storing the bent glass material for a time period of at least 1 day; inspecting at least a portion of the bent glass material for damage after the storing; and classifying the inspected bent glass material as a reject if damage is detected or as a long-term bendable glass material if no damage is detected.

Long-term bendable glass material, and method for the production of a long-term bendable glass material

The present disclosure relates to a method for at least section-wise separating a glass element into at least two glass sub-elements along a separation face and a glass sub-element which is manufactured and/or can be manufactured in particular by the method according to the disclosure.

Method for separating a glass element and glass sub-element

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.

Hermetically sealed transparent cavity and package for same

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

Glass elements are provided that include a coating and a sheet-like glass substrate. The sheet-like glass substrate has a first surface and a second surface opposite the first surface. The coating is disposed in at least some areas of at least one of the first and second surfaces. The coating is an inorganic glass-based coating that includes at least one glassy component; at least one pigment comprising pigment particles; and a filler. The filler is inorganic and includes filler particles with a dvalue, based on an equivalent diameter, of at least 0.1 &#x3bc;m and less than 10 &#x3bc;m.

Glass element comprising enamel coating and use thereof, coating agent for making same, and method for producing the coating agent

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

A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.

Thin glass roll and method for producing same

An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample.

Method and apparatus for determining the edge strength of plate-shaped elements made of brittle-fracture material

A method for processing a thin glass is provided. The thin glass is subjected to a tensile stress &#x3c3;smaller than whereinis a mean value of tensile stress at break for fractures in a surface of samples of the thin glass under bending stress, whereinis a mean value of tensile stress at break for fractures emanating from an edge of the samples, wherein Lis an edge length and Ais a surface area of the samples, wherein &#x394;and &#x394;denote standard deviations of the mean valuesand, respectively, and wherein Ais a surface area of the thin glass, Lis a summated edge length of opposite edges of the thin glass, and &#x3a6; is a predefined maximum fracture rate within a period of time of at least half a year.

Method for further processing thin glass and thin glass produced by such method

A method and an apparatus for examining the fracture strength of flat samples made of brittle-fracture material are provided. The margin of the respective sample is subjected to tensile stress by bending the material in a circular arc shape.

Method and apparatus for determining the fracture strength of the margins of thin sheets of brittle-fracture material

An apparatus for producing holes in dielectric workpieces in the form of thin sheets and substrates, in particular of glass or glass-like materials and semiconductors is provided. The apparatus includes individual high-voltage electrodes that are symmetrically arranged on an electrode holder around the hole to be produced in the workpiece. The apparatus also includes individual counter electrodes that are arranged on a counter electrode holder. The electrodes and counter electrodes can be connected in a permutating manner to a high-voltage source for the discharge of high-voltage flashovers.

Generation of holes using multiple electrodes

The construction principles according to the present invention make possible large sheet-like solar modules with low weight, which have great mechanical toughness, are inured to rough climatic environment influences and withstand thermal stress due to solar irradiation and shadowing effects. The solar modules have front and back panes, one of which has a thickness of at least 3 mm and the other of which has a thickness of at most 2 mm. The coefficient of thermal expansion of the thicker pane is preferably greater than that of the thinner pane. In preferred embodiments burling or a wavy structure is provided on one side of the front pane and/or the back pane.

Photovoltaic modules having reduced weight

A flat light source having a front plate and a rear part. The front plate is held at a distance from the rear part by spacers. A gaseous filling which is under a pressure lower than the ambient atmospheric pressure is introduced into the intermediate space between the front plate and rear part, and the front plate is of a glass material. To be able to produce flat light sources of this type which have a low intrinsic weight, according to this invention the front plate and/or the rear part can be configured as an at least partly thermally or chemically tempered glass pane or the front plate and/or the rear part can be configured as a glass pane which at least in areas is coated with ductile polymer material.

Flat light source

Growing community of inventors

Ockenheim, Germany

Kurt Nattermann