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Research at DIT

Pioneering & Vibrant

Technology application centre Spiegelau

Glas technology

With the support of the districts of Spiegelau, of Freyung-Grafenau and the Free State of Bavaria, a new Technology Application Centre was established in Spiegelau. Under the scientific direction of the Deggendorf Institute of Technology and the University of Bayreuth, new technologies for glass melting and forming into precise optical components are being scientifically developed at the traditional location. The TAZ has a high degree of competence.


about the Technology application centre Spiegelau

The Spiegelau Technology Application Centre was officially opened in March 2012. In cooperation with the University of Bayreuth and the company Füller Glastechnologie Vertriebs GmbH, the topic of "glass" was taken up from an area of 40,000 m².

Due to the broad topic "glass", many industries are customers and partners, from the classic glass industry to the automotive industry. It is precisely this interface between science and business that gives glass a dimension of its own at TAZ Spiegelau.


We work on research & development projects for:

  • new types of glass and their pre-industrial qualification
  • the process design for the thermoforming of glass components
  • technology transfer of industrially usable processes
  • Feasibility studies for complex optical components


We are strong in:

  • the alliance with the technology campi Teisnach and Cham
  • the association with university and industrial partners
  • the cooperation of basic and user-oriented R&D
  • the continuing education of students
  • the implementation of internships and courses
  • the support of spin-offs of new companies in the TAZ environment


What already has a decades-long tradition in the region has been given a new innovative direction through application-oriented research. At TAZ Spiegelau, research and development is carried out in the areas of melting technology, hot forming and precision molding. From the melt to the shaping and surface analysis, the individual steps can be accompanied and individually adapted by the highly technical equipment and the close cooperation up to the process capability.

For example, the composition of glass and mold material can be precisely detected and a variable setting of the glass composition can be tested. An XRF spectrometer is available for this purpose, which enables a process-oriented measuring procedure for the element composition of a large number of materials. The optical and geometric measurement of the components is obligatory in the TAZ. Material and process innovations for optical glass components are researched and various development tasks are performed.

  •     Development of application-modified glasses for forming
  •     Production of preforms from the melt



  •     mould development
  •     process simulation

As a rule, our project partners specify the optical design of the desired lenses, with which the respective specification is to be fulfilled.

Based on this, the TAZ creates the corresponding mould design of the press tool depending on the geometry and the type of glass. Using the finite element method, the pressing process is mathematically simulated from this data, i.e. the deviations between the optical component and the tool are predicted and fixed in a CAD model.

Since the surfaces of the press tool are directly shaping for the lens, they are manufactured with high precision from special suitable materials. This requires particularly optimized machining processes.

The achieved geometry of the press tool is controlled by a high-precision tactile coordinate measuring machine.

Precious metal coatings of the tool precisely matched to the process and controlled process conditions under inert gas and vacuum prevent corrosion of the glass and tool surfaces.

The geometry of the cooled, precision-bright-pressed lenses is measured with high precision at the TAZ using a fiber-optic touch probe system. Quality control of optical imaging errors is application-oriented with a Shack-Hartmann wavefront sensor.

The lens is now ready and fulfils its intended use.


  • Development of application-specific measurement strategies
  • Characterization of material properties


Current Projects:

Completed Projects:


The Technology Application Centre Spiegelau cooperates regionally with partners from industry and education. In addition, there are numerous cooperation partners in our research projects of the individual working groups.


Technische Hochschule Deggendorf
Technologie Anwender Zentrum Spiegelau

Dr. Ludwig-und-Johanna-Stockbauer-Platz 1
(für Navigationssysteme: Hauptstrasse 30)
D-94518 Spiegelau

+49 (0)8553 97996-10
+49 (0)8553 97996-28