Methods for describing illumination colour uniformities
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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.
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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 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 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.
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.
About the authors
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 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 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 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.
References
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©2015 THOSS Media & De Gruyter
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Artikel in diesem Heft
- Cover and Frontmatter
- Editorial
- Reviewer recognition and new plans for 2015
- Views
- European Photonics Industry Back to Growth in 2014
- Lenses for film and television: an international survey
- Community
- Community News
- Conference Calendar
- Topical issue: Micro-optics for industrial applications
- Editorial
- Micro-optics for industrial applications
- Tutorial
- High-end spectroscopic diffraction gratings: design and manufacturing
- Review Articles
- From regular periodic micro-lens arrays to randomized continuous phase profiles
- Micro-optics and lithography simulation are key enabling technologies for shadow printing lithography in mask aligners
- Research Articles
- Polarizing and angle-sensitive color filter in transmittance for security feature applications
- Micro-optics in lighting applications
- Letter
- Optical simulation of microstructured surfaces
- Tutorial
- The consequences of Petzval correction in lithographic designs
- Research Article
- Methods for describing illumination colour uniformities
