Dr. Benjamin K. Tsai Profile

Dr. Benjamin K. Tsai

Retired at National Institute of Standards and Technology

SPIE Involvement:

Author

Proceedings Article | 21 May 2015 Paper

Spectral reflectance variability of skin and attributing factors

Catherine Cooksey, Benjamin Tsai, David Allen

Proceedings Volume 9461, 94611M (2015) https://doi.org/10.1117/12.2184485

KEYWORDS: Reflectivity, Skin, Absorption, Spectrophotometry, Ultraviolet radiation, Visible radiation, Human subjects, Short wave infrared radiation, Infrared signatures, Near infrared

Read Abstract +

Proceedings Article | 4 June 2014 Paper

A collection and statistical analysis of skin reflectance signatures for inherent variability over the 250 nm to 2500 nm spectral range

Catherine Cooksey, Benjamin Tsai, David Allen

Proceedings Volume 9082, 908206 (2014) https://doi.org/10.1117/12.2053604

KEYWORDS: Reflectivity, Skin, Principal component analysis, Statistical analysis, Human subjects, Spectrophotometry, Short wave infrared radiation, Ultraviolet radiation, Photography, Solids

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Tunable supercontinuum fiber laser source for BRDF measurements in the STARR II gonioreflectometer

Heather Patrick, Clarence Zarobila, Thomas Germer, Victor Ying, Catherine Cooksey, Benjamin Tsai

Proceedings Volume 8495, 84950K (2012) https://doi.org/10.1117/12.930742

KEYWORDS: Bidirectional reflectance transmission function, Receivers, Polarization, Light sources, Sensors, Reflectivity, Light scattering, Scattering, Optical testing, Silicon

Read Abstract +

Proceedings Article | 21 August 2009 Paper

The extension of the NIST BRDF scale from 1100 nm to 2500 nm

Howard Yoon, David Allen, George Eppeldauer, Benjamin Tsai

Proceedings Volume 7452, 745204 (2009) https://doi.org/10.1117/12.827293

KEYWORDS: Reflectivity, Radiometry, Sensors, Calibration, Monochromators, Radio optics, Polarization, Infrared radiation, Indium gallium arsenide, Lamps

Read Abstract +

Proceedings Article | 29 August 2008 Paper

A comparison of optical properties between high density and low density sintered PTFE

Benjamin Tsai, David Allen, Leonard Hanssen, Boris Wilthan, Jinan Zeng

Proceedings Volume 7065, 70650Y (2008) https://doi.org/10.1117/12.798138

KEYWORDS: Bidirectional reflectance transmission function, Transmittance, FT-IR spectroscopy, Reflectivity, Optical properties, Ultraviolet radiation, Sensors, Infrared radiation, Diffusers, Particles

Read Abstract +

Proceedings Article | 18 April 2006 Paper

Design and characterization of Si and InGaAs pyrometers for radiance temperature scale realization between 232 °C and 962 °C

M. Noorma, S. Mekhontsev, V. Khromchenko, A. Gura, M. Litorja, B. Tsai, L. Hanssen

Proceedings Volume 6205, 620501 (2006) https://doi.org/10.1117/12.667253

KEYWORDS: Temperature metrology, Calibration, Pyrometry, Silver, Zinc, Tin, Black bodies, Radiometry, Silicon, Indium gallium arsenide

Read Abstract +

Proceedings Article | 29 April 2004 Paper

Comparing the transient response of a resistive-type sensor with a thin film thermocouple during the post-exposure bake process

Kenneth Kreider, David DeWitt, Joel Fowler, James Proctor, William Kimes, Dean Ripple, Benjamin Tsai

Proceedings Volume 5378, (2004) https://doi.org/10.1117/12.535522

KEYWORDS: Semiconducting wafers, Sensors, Thin films, Temperature metrology, Resistance, Lithography, Wafer testing, Silicon, Platinum, Data modeling

Read Abstract +

Proceedings Article | 23 March 2001 Paper

Characterization of an infrared spectrograph for noncontact thermometry applications using a sodium heat pipe blackbody

Benjamin Tsai, John Widmann, Matthew Bundy, Stephen Hill

Proceedings Volume 4360, (2001) https://doi.org/10.1117/12.421022

KEYWORDS: Spectrographs, Calibration, Black bodies, Temperature metrology, Charge-coupled devices, Infrared radiation, Sodium, Infrared spectroscopy, Infrared imaging, Spectral calibration

Read Abstract +

Proceedings Article | 23 March 2001 Paper

Noncontact thermometry in the Optical Technology Division at NIST

Charles Gibson, Howard Yoon, Benjamin Tsai, B. Carol Johnson, Robert Saunders

Proceedings Volume 4360, (2001) https://doi.org/10.1117/12.421011

KEYWORDS: Calibration, Black bodies, Temperature metrology, Sensors, Radiometry, Thermography, Thermodynamics, Lamps, Pyrometry, Francium

Read Abstract +

Proceedings Article | 29 September 1995 Paper

Evaluation of the radiation characteristics of a high-temperature blackbody

Benjamin Tsai, B. Carol Johnson, Robert Saunders

Proceedings Volume 2553, (1995) https://doi.org/10.1117/12.221381

KEYWORDS: Black bodies, Calibration, Power supplies, Radiometry, Optical filters, Pyrometry, Temperature metrology, Standards development, Lamps, Feedback control

Read Abstract +

Proceedings Article | 16 May 1994 Paper

Modeling of solvent evaporation effects for hot plate baking of photoresist

Chris Mack, David DeWitt, Benjamin Tsai, Gil Yetter

Proceedings Volume 2195, (1994) https://doi.org/10.1117/12.175372

KEYWORDS: Photoresist materials, Semiconducting wafers, Diffusion, Data modeling, Thermal modeling, Photoresist developing, Refraction, Convection, Chemically amplified resists, Resistance

Read Abstract +