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Michael Royer

Michael Royer

Pacific Northwest National Laboratory
Portland Office
620 SW FIFTH AVE, SUITE #810
Portland, OR 97204
(503) 227-1155

Biography

Michael joined PNNL as a Lighting Engineer in 2011 and works in PNNL's Portland office. Working for the Department of Energy's Solid-State Lighting program, he focuses on technology development issues, helping to improve product performance through research, testing, standards development, and engagement with various elements of the lighting industry. Michael is a principal investigator for the CALiPER program, and manages the Metrics and Standards program. He has also developed a human factors research agenda that is currently focusing on color rendition.

Michael is a member of the Illuminating Engineering Society's (IES) Color Committee, and was the chair of the IES Color Metrics Task Group, which developed TM-30-15. He is also a member of the IES Technical Procedures Committee (TPC), and has served as a guest editor for LEUKOS' special edition on color rendition. Prior to joining PNNL, Michael earned a Ph.D. in Architectural Engineering from Penn State University, receiving the 2013 Taylor Technical Talent Award from the IES for his published work. Michael was named a future leader of lighting by LD+A Magazine in 2010, and has authored over 50 journal articles and government reports.

Research Interests

  • Human factors in lighting, including color perception the relationship between light and health
  • Spectral optimization
  • Long-term performance of lighting products
  • Developing metrics for both energy-related and quality-related aspects of lighting

Education and Credentials

  • B.A.E. / M.A.E., Architectural Engineering, Penn State University, 2008
  • Ph.D., Architectural Engineering, Penn State University, 2011

PNNL Publications

2018

  • Royer M.P. 2018. "Comparing Measures of Average Color Fidelity." LEUKOS - The Journal of the Illuminating Engineering Society of North America 14, no. 2:69-85. PNNL-SA-128752. doi:10.1080/15502724.2017.1389283
  • Royer M.P. 2018. "TM-30 Guidance." LD+A 46, no. 6:24-28. PNNL-SA-134085.
  • Royer M.P., K.W. Houser, and A. David. 2018. "Chroma Shift and Gamut Shape: Going Beyond Average Color Fidelity and Gamut Area." LEUKOS - The Journal of the Illuminating Engineering Society of North America 14, no. 3:149-165. PNNL-SA-127109. doi:10.1080/15502724.2017.1372203

2017

  • Royer M.P. 2017. "What is the Reference? An Examination of Alternatives to the Reference Sources Used in IES TM-30-15." LEUKOS - The Journal of the Illuminating Engineering Society of North America 13, no. 2:71-89. PNNL-SA-119373. doi:10.1080/15502724.2016.1255146
  • Royer M.P., A.M. Wilkerson, M. Wei, K.W. Houser, and R.G. Davis. 2017. "Human perceptions of colour rendition vary with average fidelity, average gamut, and gamut shape." Lighting Research and Technology 49, no. 8:966-991. PNNL-SA-116963. doi:10.1177/1477153516663615
  • Royer M.P., and M. Wei. 2017. "The Role of Presented Objects in Deriving Color Preference Criteria from Psychophysical Studies." LEUKOS - The Journal of the Illuminating Engineering Society of North America 13, no. 3:143-157. PNNL-SA-121334. doi:10.1080/15502724.2016.1271339
  • Royer M.P., K.W. Houser, and A. David. 2017. "Chroma Shift and Gamut Shape: Going Beyond Average Color Fidelity and Gamut Area." In IES 2017 Annual Conference Proceedings, August 10-12, 2017, Portland, Oregon. New York, New York:Illuminating Engineering Society. PNNL-SA-127957.

2016

  • Davis L., J. Young, and M.P. Royer. 2016. CALiPER Report 20.5: Chromaticity Shift Modes of LED PAR38 Lamps Operated in Steady-State Conditions. PNNL-25201. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P. 2016. "IES TM-30-15 Is Approved - Now What?: Moving Forward with New Color Rendition Measures." LEUKOS - The Journal of the Illuminating Engineering Society of North America 12, no. 1-2:3-5. PNNL-SA-112850. doi:10.1080/15502724.2015.1092752
  • Royer M.P. 2016. CALiPER Report 23: Photometric Testing of White-Tunable LED Luminaires (Addendum). PNNL-25113. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., and K.W. Houser. 2016. "Color Rendering: What do we want?." LD+A. PNNL-SA-121039.

2015

  • David A., P.T. Fini, K.W. Houser, Y. Ohno, M.P. Royer, K.A. Smet, and M. Wen, et al. 2015. "Development of the IES method for evaluating the color rendition of light sources." Optics Express 23, no. 12:15888-15906. PNNL-SA-111073. doi:10.1364/OE.23.015888
  • Houser K.W., M.P. Royer, and A. David. 2015. "Evaluating Light Source Color Rendition using the IES TM-30-15 Method." In 5th Professional Lighting Design Conference (PLDC 2015), October 28-31, 2015, Rome, Italy. GŁtersloh:VIA-Verlag. PNNL-SA-111641.
  • Houser K.W., M.P. Royer, and L. Whitehead. 2015. "Correspondence: In support of the IES method of evaluating light source colour rendition." Lighting Research and Technology 47, no. 8:1029-1034. PNNL-SA-113267. doi:10.1177/1477153515617392
  • Royer M.P., M.B. Merzouk, N.J. Miller, and T.A. Beeson. 2015. CALiPER Report 23: Photometric Testing of White-Tunable LED Luminaires. PNNL-24595. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., M.E. Poplawski, C.C. Brown, and M.B. Merzouk. 2015. CALiPER Report 22.1: Photoelectric Performance of LED MR16 Lamps. PNNL-24627. Richland, WA: Pacific Northwest National Laboratory.

2014

  • Miller N.J., T.E. Perrin, and M.P. Royer. 2014. CALiPER Report 21.3: Cost-Effectiveness of Linear (T8) LED Lamps. PNNL-23378. Richland, WA: Pacific Northwest National Laboratory.
  • Miller N.J., T.E. Perrin, M.P. Royer, A.M. Wilkerson, and T.A. Beeson. 2014. DOE CALiPER Program, Report 21.2: Linear (T8) LED Lamp Performance in Five Types of Recessed Troffers. PNNL-23366. Richland, WA: Pacific Northwest National Laboratory.
  • Poplawski M.E., M.P. Royer, and C.C. Brown. 2014. CALiPER Report 20.3: Robustness of LED PAR38 Lamps. PNNL-23971. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P. 2014. Application Summary Report 22: LED MR16 Lamps. PNNL-23449. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P. 2014. Lumen and Chromaticity Maintenance of LED PAR38 Lamps Operated in Steady-State Conditions. PNNL-23988. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P. 2014. TRUE COLORS: LEDS AND THE RELATIONSHIP BETWEEN CCT, CRI, OPTICAL SAFETY, MATERIAL DEGRADATION, AND PHOTOBIOLOGICAL STIMULATION. PNNL-23622. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., and T.A. Beeson. 2014. CALiPER Retail Lamps Study 3. PNNL-23132. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., J.J. McCullough, and J.C. Tucker. 2014. CALiPER Retail Lamps Study RRL3.2 Lumen and Chromaticity Maintenance of LED A lamps Operated in Steady-State Conditions. PNNL-23984. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., M.E. Poplawski, and C.C. Brown. 2014. Retail Lamps Study 3.1: Dimming, Flicker, and Power Quality Characteristics of LED A Lamps. PNNL-23944. Richland, WA: Pacific Northwest National Laboratory.

2013

  • Kinzey B.R., M.P. Royer, M. Hadjian, and R. Kauffman. 2013. Demonstration of LED Street Lighting in Kansas City, MO. PNNL-22515. Richland, WA: Pacific Northwest National Laboratory.
  • Miller N.J., M.P. Royer, and M.E. Poplawski. 2013. CALiPER Exploratory Study: Recessed Troffer Lighting. PNNL-22348. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P. 2013. Lumen Maintenance and Light Loss Factors: Consequences of Current Design Practices for LED's. PNNL-22727. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., M.E. Poplawski, and N.J. Miller. 2013. DOE CALiPER Program, Report 20.1 Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps. PNNL-22907. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., R. Tuttle, S.M. Rosenfeld, and N.J. Miller. 2013. Color Maintenance of LEDs in Laboratory and Field Applications. PNNL-22759. Richland, WA: Pacific Northwest National Laboratory.

2012

  • Kinzey B.R., M. Myer, M.P. Royer, and G.P. Sullivan. 2012. Use of Occupancy Sensors in LED Parking Lot and Garage Applications: Early Experiences. PNNL-21923. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., and K.W. Houser. 2012. "Spatial Brightness Perception of Trichromatic Stimuli." LEUKOS - The Journal of the Illuminating Engineering Society of North America 9, no. 2:89-108. PNNL-SA-91455.
  • Royer M.P., J.R. Tuenge, and M.E. Poplawski. 2012. Demonstration Assessment of LED Roadway Lighting: Philadelphia, PA. PNNL-21860. Richland, WA: Pacific Northwest National Laboratory.
  • Royer M.P., M.E. Poplawski, and J.R. Tuenge. 2012. Demonstration Assessment of LED Roadway Lighting: NE Cully Boulevard Portland, OR. PNNL-21456. Richland, WA: Pacific Northwest National Laboratory.

Energy and Environment

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