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Dr. George P. Eppeldauer

George Eppeldauer's research area is in detector metrology developing transfer and working standard optical radiometers, photometers, and colorimeters and realizing detector responsivity based scales. The standards he has developed have been utilized to improve the two NIST SI units, the candela and kelvin, the illuminance responsivity scale, the tristimulus color scale, the spectral power, irradiance, and radiance responsivity reference-scales, and the spectral irradiance scale. He won the Best Paper Award at the NCSLI Conference in 2004. Dr. Eppeldauer chairs the CIE TC2-29 Technical Committee (TC) on Linearity of Optical Detector Systems. He received the Gold Medal Award from the Department of Commerce in 2010 for the development of the SIRCUS, the highest accuracy reference spectral-responsivity calibration facility of NIST.

His present research projects are:

Detector metrology
Transfer and working standard radiometers and photometers
Detector-based color scale
Night vision goggle calibrations
Infrared spectral responsivity calibrations
Broadband UV measurements
Photocurrent calibrations

George Eppeldauer


Electronics Engineer
Sensor Science Division
Optical Radiation Group

Employment History:

1986-present, NIST, Gaithersburg, MD

1967-1986, Research Institute for Technical Physics at the Hungarian Academy of Sciences, Budapest, Hungary


Ph.D. Electronics Engineering, Technical University of Budapest, Budapest, Hungary

M.E. Electronics Engineering, Technical University of Budapest, Budapest, Hungary


Phone: 301-975-2338
Email: george.eppeldauer@nist.gov
Fax: 301-869-5700