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Clarence Zarobila (Fed)

Mr. Zarobila is a physicist in PML's Sensor Science Division. He co-developed the Robotic Optical Scattering Instrument (ROSI), the national reference instrument for specular and bi-directional reflectance measurements. For that work he and his colleagues received the NIST Judson C. French award. He also co-developed the air-LUSI telescope, the "eye" of a system which measures the spectral irradiance of the moon from an aircraft flying near the top of the atmosphere. He supports NIST STARS and a variety of other projects in PML and EL by developing optical and engineering models. His research interests include interferometry, spectrophotometry, color and appearance, and sensing using optical and fiber-optic techniques.

Research projects


NIST Stars

Previous Publications

"Fiber-Optic Sensors," Davis, C. M. and Zarobila, C. J., In R.W. Waynant, & M.N. Ediger, Electro-Optics Handbook, (2nd ed., Chapter) New York: McGraw-Hill.


3D printed optical concentrators for LED arrays

Behrang H. Hamadani, Jonathan E. Seppala, Clarence J. Zarobila
Additive manufacturing methods based on photopolymerization offer a great potential for fabrication of high quality, highly transparent optical components. One

Design, Developments, and Results from the NIST Additive Manufacturing Metrology Testbed (AMMT)

Brandon M. Lane, Sergey Mekhontsev, Steven E. Grantham, Mihaela Vlasea, Justin G. Whiting, Ho Yeung, Jason C. Fox, Clarence J. Zarobila, Jorge E. Neira, Michael L. McGlauflin, Leonard M. Hanssen, Shawn P. Moylan, M A. Donmez, Joseph P. Rice
NIST is developing a facility titled the Additive Manufacturing Metrology Testbed that will enable advanced research into monitoring, controls, process
Created June 4, 2019, Updated June 15, 2021