About us

About us

Determined to innovate

GL Optic is a Polish-German Limited Company, which offers precise light measuring instruments and complex solutions for spectral light measurement systems.

In our product line you will find intelligently designed, intuitive and accurate measuring systems, these include: spectrometers, integrating spheres, goniometers, programmable sources of LED light and analytical software.

Our history

GL Optic is a subsidiary of the German JUST Normlicht GmbH, the world’s leading supplier of standardized lighting technologies for printing and art industries. JUST is designing and producing standardized lighting equipment for the visual assessment of colors and surfaces.

The spectral light measurement project was created at the end of 2009 by Michael Gall the owner and CEO of JUST Normlicht in cooperation with Jan Lalek, a Polish physicist. Jan Lalek has created a cutting edge LED tunable standard lighting system and designed instruments for quality light control at the laboratory level. Those devices started the line of GL Optic Products.

GL Optic distill from JUST’s 30 years of experience and deliver innovative solutions for manufacturers, scientists and experts of the lightening industry. Our own light measuring instruments are used on a daily basis in lots of well-known companies. This way we have gained the right experience and understand what are the key issues involved in every day spectral measurements. Therefore we claim to be the best partner and solution provider in the modern lighting industry.


GL Optic products use well-known companies from different industries:


  • OSRAM Semiconductors
  • Philips Lighting
  • Zumtobel
  • Tobias Grau
  • Louis Poulsen
  • Eiko
  • Burri
  • Vossloh Schwabe
  • LENA Lighting S.A.


  • Nvidia
  • ON Semi
  • Whirlpool
  • Steinel
  • LACROIX Electronics


  • Automotive Lighting
  • Daimler AG
  • PSA
  • Varroc
  • Volvo
  • BOSMAL Instytut Motoryzacji


  • Marquardt
  • TGA
  • Famed


  • National Gallery in London
  • Guggenheim Muzeum Bilbao
  • Heliograph

Universities and knowledge centers:

  • Technische Universität Braunschweig in Germany
  • HAWK Hildesheim in Germany
  • Höhere Technische Bundeslehr und Versuchsanstalt in Austria
  • Universität Basel in Switzerland
  • Institut Universitaire de Technologie Amiens in France
  • University of Portsmouth in UK
  • London South Bank University in UK
  • South Dakota School of Mines & Technology in USA
  • King Abdullah University of Science & Technology in Saudi Arabia
  • Poznan University of Technology in Poland
  • Lublin University of Technology in Poland


  • Rolex
  • Oesterreichische Banknoten und Sicherheitsdruck GmbH in Viena
  • Carl Zeiss

Contact detailes

GL Optic Lichtmesstechnik GmbH
Tobelwasenweg 24
D-73235 Weilheim/Teck
GermanyGeschäftsführer: Michael Gall; Sitz der Gesellschaft ist Weilheim/Teck; Amtsgericht Kirchheim/Teck HRB746271; U-St.IDNR DE 292228248; Steuer-Nr. 69068/56239

Germany, Austria, Switzerland, Italy, Turkey:

+49 (7023) 9504 30

Rest of World: +49 7023 7457-514

Fax +49 (7023) 9504 837


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