Beyond Sunlight: Solid State Lighting (Electron Device Society Technical Meeting)
Speaker: Michael S. Shur
ECSE and Physics
Rensselaer Polytechnic Institute
http://www.ecse.rpi.edu/shur/ shurm@rpi.edu
The creation of efficient sources of white light is the ultimate goal of the solid-state lighting technology. The efficiency of white LEDs using conversion of blue or UV light in ionic phosphors has already reached 250 lm/W. This efficiency is almost 20 times higher that that of an incandescent lamp (13 lm/W), nearly 3 times higher than that of a fluorescent lamp (90 lm/W), and almost double that for a high pressure sodium lamp (132 lm/W), Multicolor LED modules producing white light could achieve even higher efficiency, and optimization of such multi color LED modules is one of the most important problems of the emerging solid-state lighting technology. Solving this problem has allowed us to design and build Versatile Solid State Lamps with adjustable spectrum used for treating seasonal affective disorder, growing plants, and evaluating color rendering. Such solid-state lamps that maintain constant user-selected spectrum via computer control will also find many other special and medical applications. In spite of a tremendous progress in lighting technology, the method of assessment of color rendering properties of white light underwent only minor improvements since its introduction in 1965. We propose a new approach based on color rendition vectors of 1269 test samples of the Munsell palette. We sort the rendered colors into different groups—colors rendered with high fidelity, colors rendered with increased saturation, and those rendered with distorted hue—and introduce corresponding indices (in combination with the correlated color temperature) to assess the color quality of light sources. We show that this new metric resolves the paradox of high visual ranking of colored-LED clusters, which have low color-fidelity properties but make the majority of colors to appear as more saturated.
Date and Time
Location
Hosts
Registration
- Date: 25 Oct 2018
- Time: 06:00 PM to 07:30 PM
- All times are (GMT-05:00) US/Eastern
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- George Mason University
- Fairfax, Virginia
- United States 22030
- Building: Engineering Building
- Room Number: Room 1108
- Contact Event Host
- Co-sponsored by Dimitrios E Ioannou. George Mason University
- Starts 04 October 2018 05:46 PM
- Ends 25 October 2018 07:30 PM
- All times are (GMT-05:00) US/Eastern
- No Admission Charge
Speakers
Michael S. Shur
Beyond Sunlight: Solid State Lighting
Biography:
Dr. Michael Shur is Roberts Professor at RPI and co-founder of Sensor Electronics Technology, Inc., and of Electronics of the Future, Inc. He is Life Fellow of IEEE and APS, Fellow of the National Academy of Inventors and of several other professional societies. His awards include IEEE Ebers. Kirchmayer, Donald Fink, and Sensors Council Awards, Tibbetts Award for Technology Commercialization, St. Petersburg Technical University and University of Vilnius Honorary Doctorates, Gold Medal of Russian Education Ministry, van der Ziel Award, Senior Humboldt Research Award, RPI Research Awards, and several Best Paper Awards. He is an IEEE EDS and Sensors Council Distinguished Lecturer and Foreign Member of the Lithuanian Academy of Sciences.
Address:Rensselaer Polytechnic Institute,
Agenda
This seminar will be given as part of Dimtri Ioannou's Device Physics class. Social hour with food at 6:00 pm. Talk at 6:30 pm. Outside attendees are welcome for the lecture and social hour.
GMU campus map available at: gmu.edu/resources/welcome/FairfaxMap2018.pdf
Engineering building is #36, parking deck (lower level visitors) is #42.
Parking is $3/hour.