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Methods for describing illumination colour uniformities

  • Ingo Rotscholl

    Ingo Rotscholl received his BSc and MSc at the Department of Electrical Engineering and Information Technology of Karlsruhe Institute of Technology, Germany, in 2014. He continues his researches from his master thesis in the fields of colorimetric simulation and colour evaluation as a PhD student at the Light Technology Institute.

     EMAIL logo     , Klaus Trampert

    Klaus Trampert received his Diploma in Electrical Engineering from the University Karlsruhe (TH). He finished his PhD in Plasma Physics of Lamps at the same department in Karlsruhe Institute of Technology in 2008. He now works as a lecturer in Photometry and is head of an accredited laboratory for general and automotive lighting devices.

         , Franziska Herrmann

    Franziska Herrmann received her diploma in Physics in 2009 at the University of Hamburg. Further, she graduated in 2013 as a PhD at Karlsruhe Institute of Technology, studying light and colour measurement.

         and Cornelius Neumann

    Cornelius Neumann studied Physics and Philosophy at the University of Bielefeld, Germany. After his PhD, he worked for the automotive supplier Hella in the advanced development for Automotive Lighting. Since 2009, he is a Professor for Optical Technologies in Automotive and General Lighting.
Published/Copyright: February 6, 2015
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Advanced Optical Technologies
From the journal Advanced Optical Technologies Volume 4 Issue 1

Abstract

Optimizing angular or spatial colour homogeneity has become an important task in many general lighting applications and first requires a valid description of illumination colour homogeneity. We analyse different frequently used methods to describe colour distributions in theory and with measurement data. It is described why information about chromaticity coordinates, correlated colour temperature and global chromaticity coordinate distances are not sufficient for describing colour homogeneity perception of light distributions. We present local chromaticity coordinate distances as expandable and easy implementable method for describing colour homogeneity distributions that is adaptable to the field of view by only one intuitive, physiological meaningful parameter.

Keywords: colour; colour uniformity; illumination and lighting technology; optical engineering; standards
Corresponding author: Ingo Rotscholl, Karlsruhe Institute of Technology, Department of Electrical Engineering and Information Technology, Light Technology Institute, Engesserstr. 13, 76131 Karlsruhe, Germany, e-mail:

About the authors

Ingo Rotscholl

Ingo Rotscholl received his BSc and MSc at the Department of Electrical Engineering and Information Technology of Karlsruhe Institute of Technology, Germany, in 2014. He continues his researches from his master thesis in the fields of colorimetric simulation and colour evaluation as a PhD student at the Light Technology Institute.

Klaus Trampert

Klaus Trampert received his Diploma in Electrical Engineering from the University Karlsruhe (TH). He finished his PhD in Plasma Physics of Lamps at the same department in Karlsruhe Institute of Technology in 2008. He now works as a lecturer in Photometry and is head of an accredited laboratory for general and automotive lighting devices.

Franziska Herrmann

Franziska Herrmann received her diploma in Physics in 2009 at the University of Hamburg. Further, she graduated in 2013 as a PhD at Karlsruhe Institute of Technology, studying light and colour measurement.

Cornelius Neumann

Cornelius Neumann studied Physics and Philosophy at the University of Bielefeld, Germany. After his PhD, he worked for the automotive supplier Hella in the advanced development for Automotive Lighting. Since 2009, he is a Professor for Optical Technologies in Automotive and General Lighting.

Acknowledgments

The authors would like to thank Simon Wendel for many discussions during the development of the method of local chromaticity coordinate distances and Julia Möhring and Simon Wendel for carefully reading the manuscript. This work has been supported by the German Federal Ministry of Education and Research funding program Photonics Research Germany (contract number 13N13396). The authors also want to thank the Karlsruhe School of Optics and Photonics (KSOP) for additional support.

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Received: 2014-12-10
Accepted: 2015-1-12
Published Online: 2015-2-6
Published in Print: 2015-2-1

©2015 THOSS Media & De Gruyter

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https://doi.org/10.1515/aot-2014-0066
Keywords for this article
colour; colour uniformity; illumination and lighting technology; optical engineering; standards

Articles in the same Issue

  1. Cover and Frontmatter
  2. Editorial
  3. Reviewer recognition and new plans for 2015
  4. Views
  5. European Photonics Industry Back to Growth in 2014
  6. Lenses for film and television: an international survey
  7. Community
  8. Community News
  9. Conference Calendar
  10. Topical issue: Micro-optics for industrial applications
  11. Editorial
  12. Micro-optics for industrial applications
  13. Tutorial
  14. High-end spectroscopic diffraction gratings: design and manufacturing
  15. Review Articles
  16. From regular periodic micro-lens arrays to randomized continuous phase profiles
  17. Micro-optics and lithography simulation are key enabling technologies for shadow printing lithography in mask aligners
  18. Research Articles
  19. Polarizing and angle-sensitive color filter in transmittance for security feature applications
  20. Micro-optics in lighting applications
  21. Letter
  22. Optical simulation of microstructured surfaces
  23. Tutorial
  24. The consequences of Petzval correction in lithographic designs
  25. Research Article
  26. Methods for describing illumination colour uniformities
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