Schott Ag

Frank Macherey

Andreas Ortner

Clemens Ottermann

Rainer Liebald

Holger Wegener

Andreas Habeck

Jürgen Vogt

Thomas Wiegel

Thomas Roßmeier

Michael Stelzl

Ulrich Battmer

Uwe Wilkens

Bruno Schrader

A glass roll, as well as a device and a method for manufacturing the glass roll are provided. The glass roll includes a glass ribbon having a thickness, a length in an x-direction, and a width in a y-direction. The glass ribbon has at least one defect site at a position, as well as at least one error mark disposed on the glass ribbon, and is wound up into a glass roll.

Glass roll, product having a glass roll, device and method for the manufacture thereof

An apparatus for identifying defects within the volume of a transparent sheet, such as a glass sheet, is provided. The apparatus includes an illumination device that directs incident light onto at least a portion of a surface of the sheet so as to illuminate the sheet, and an image detector onto which the light backscattered from the sheet is directed to image the sheet. The apparatus generates at least two interference images under different capturing conditions in order to perform identification of defects by evaluating the at least two interference images.

Apparatus and method for identifying defects within the volume of a transparent sheet and use of the apparatus

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Wiesbaden, Germany

Frank Macherey