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Position: PhD candidate in the field of measurement of light and radiation
Institution: Physikalisch-Technische Bundesanstalt
Location: Braunschweig, Niedersachsen, Germany
Duties: The focus of the scientific work, which is carried out as part of the international joint research project "Metrology for Temporal Light Modulation" (EMPIR-20NRM01), is the development of spectral and imaging-based measurement methods for characterizing temporal light modulation (TLM) and evaluating visual effects introduced by TLM, known as temporal light artefacts (TLAs). These effects often occur with (color-)contrast modulation of lighting and displays with patterned light sources, namely as a phantom array effect or rainbow effect on pulse-width-modulated RGBW LEDs. for the sampling of periodically modulated light, a random interleaved sampling mode is to be implemented with conventional image sensors; Your work will focus on: Developing and validating time-resolved measurement methods based on commercial CMOS-based image sensors (industrial cameras and imaging luminance measurement devices), high-speed cameras, and CCD-based array spectroradiometers; Implementing an evaluation of these multi-dimensional measurement data sets regarding flicker (PstLM, SVM), the phantom array effect, and color breakup; Participating in the construction of a luminaire with color TLM and pattern TLM based on TGBW LEDs; Demonstrating the measurement processes by means of examples in real lighting systems; Implementing supplementary R&D tasks to characterize imaging luminance measurement devices and enhancing the calibration capabilities; Presenting the results at project meetings and scientific conferences; Preparing project reports and publications in English
Requirements: You have completed your university studies in natural or engineering sciences (preferably electrical engineering) or have comparable qualification and skills; You have a sound knowledge of a higher programming language such as Python or G (LabVIEW), including version management (e.g. Git); You a good have technical understanding and knowledge of LED-based light sources, photodetectors, CCD and CMOS sensors as well as of microelectronics; You have a sound knowledge of photometric and radiometric measurements and of the related measurement procedures; You are a team player with excellent communication skills; You have a good command of both spoken and written German and English; You are willing to travel within Germany and abroad within the scope of your assignment
   
Text: PhD candidate in the field of measurement of light and radiation (21-235-4) Friday, 26. February 2021 The Physikalisch-Technische Bundesanstalt (PTB) is the National Metrology Institute of the Federal Republic of Germany with scientific and technical service tasks. It furthers progress and reliability in metrology for society, the economy and science. With a starting date as soon as possible, Department 4.1, Photometry and Spectroradiometry, is looking for a candidate to fill the following position at PTB's Braunschweig site for a duration of three years: PhD candidate in the field of measurement of light and radiation Remuneration Group 13 TVöD Bund (85 %) ○ fixed-term contract Your tasks: The focus of the scientific work, which is carried out as part of the international joint research project "Metrology for Temporal Light Modulation" (EMPIR-20NRM01), is the development of spectral and imaging-based measurement methods for characterizing temporal light modulation (TLM) and evaluating visual effects introduced by TLM, known as temporal light artefacts (TLAs). These effects often occur with (color-)contrast modulation of lighting and displays with patterned light sources, namely as a phantom array effect or rainbow effect on pulse-width-modulated RGBW LEDs. For the sampling of periodically modulated light, a random interleaved sampling mode is to be implemented with conventional image sensors. Your work will focus on: Developing and validating time-resolved measurement methods based on commercial CMOS-based image sensors (industrial cameras and imaging luminance measurement devices), high-speed cameras, and CCD-based array spectroradiometers Implementing an evaluation of these multi-dimensional measurement data sets regarding flicker (PstLM, SVM), the phantom array effect, and color breakup Participating in the construction of a luminaire with color TLM and pattern TLM based on TGBW LEDs Demonstrating the measurement processes by means of examples in real lighting systems Implementing supplementary R&D tasks to characterize imaging luminance measurement devices and enhancing the calibration capabilities Presenting the results at project meetings and scientific conferences Preparing project reports and publications in English   Your professional qualifications: You have completed your university studies in natural or engineering sciences (preferably electrical engineering) or have comparable qualification and skills You have a sound knowledge of a higher programming language such as Python or G (LabVIEW), including version management (e.g. Git) You a good have technical understanding and knowledge of LED-based light sources, photodetectors, CCD and CMOS sensors as well as of microelectronics You have a sound knowledge of photometric and radiometric measurements and of the related measurement procedures You are a team player with excellent communication skills You have a good command of both spoken and written German and English You are willing to travel within Germany and abroad within the scope of your assignment We offer: Intensive PhD supervision in an interdisciplinary team A position at one of the world’s leading research institutions which has an excellent infrastructure A department with excellent national and international connections, e.g. with the International Commission on Illumination (CIE) and the DIN Standards Committee Lighting Technology (DIN FNL) Remuneration in accordance with the collective bargaining agreement for the public service (Tarifvertrag öffentlicher Dienst Bund - TVöD for the federal level) including special annual payments and capital forming benefits Various workplace health and wellness options Good transport connections (bus and bike); free parking In-house daycare center and canteen You will find further information related to this position at Department 4.1 and by contacting: Dr. Armin Sperling, phone: 49 531 592-4100, e-mail: armin.sperling (at) ptb . de or Dr. Johannes Ledig, phone: 49 531 592-4120, e-mail: johannes.ledig (at) ptb . de PTB promotes the professional equality of women and men and is thus especially interested in applications from women. Within the scope of the official feasibilities, PTB offers flexible part-time work schemes in order to support in particular the compatibility of work and family life. Disabled persons will be given priority if they have the same occupational aptitude. Please use our online application form Alternatively, you can post your application to us at the following address: Physikalisch-Technische Bundesanstalt Referat "Personal" Reference number 21-235-4 Bundesallee 100 38116 Braunschweig Germany Unfortunately, we cannot accept applications sent via e-mail. Applications can be submitted from 12 February 2021 until 26 March 2021. Back
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