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Search Publications by: Steven W. Brown (Fed)

Displaying 126 - 150 of 325

Spectral Matching With an LED-Based Spectrally Tunable Light Source

August 4, 2005

Author(s)

Irena Fryc, Steven W. Brown, Yoshihiro Ohno

A spectrally tunable light source using a large number of LEDs and an integrating sphere has been designed and constructed at the National Institute of Standards and Technology (NIST). The source is designed to have a capability of producing any visible

Realization and Application of a Detector-Based Tristimulus Color Scale at the National Institute of Standards and Technology, USA

May 13, 2005

Author(s)

George P. Eppeldauer, Steven W. Brown, Keith R. Lykke, Yoshihiro Ohno

The recently introduced detector-based calibration method for tristimulus colorimeters has been realized. The NIST reference colorimeter has been calibrated for spectral irradiance responsivity with an uncertainty of 0.15 % (coverage factor k=2) resulting

LED-based Spectrally Tunable Source for Radiometric, Photometric, and Colorimetric Applications

January 1, 2005

Author(s)

Irena Fryc, Steven W. Brown, George P. Eppeldauer, Yoshihiro Ohno

Radiometric validation of NASA's Ames Research Center's Sensor Calibration Laboratory

January 1, 2005

Author(s)

R A. Barnes, S F. Biggar, Steven W. Brown, James J. Butler, J Cooper, P Grant, P Hajek, E Hildum, B. Carol Johnson, E F. Zalewski

Spectral Matching with and LED-Based Spectrally Tunable Source

January 1, 2005

Author(s)

Irena Fryc, Steven W. Brown, Yoshihiro Ohno

A Spectrally Tunable LED Sphere Source Enables Accurate Calibration of Tristimulus Colorimeters

October 22, 2004

Author(s)

Irena Fryc, Steven W. Brown, Yoshihiro Ohno

The Four-Color Method (FCM) was developed to improve the accuracy of chromaticity measurements of various colors of a display. The method is valid for each type of display having similar spectra. To develop the Four-Color correction matrix, colorimeters

A Spectrally Tunable Solid-State Source for Radiometric, Photometric and Colorimetric Applications

August 5, 2004

Author(s)

Irena Fryc, Steven W. Brown, George P. Eppeldauer, Yoshi Ohno

Temperature Determination of the Ag-and Au-Freezing Points Using a Detector-Based Radiation Thermometer

June 26, 2004

Author(s)

Howard W. Yoon, David W. Allen, Charles E. Gibson, Maritoni A. Litorja, Robert D. Saunders, Steven W. Brown, George P. Eppeldauer, Keith R. Lykke

Development and Application Issues of a Spectrally Tunable LED Source

June 8, 2004

Author(s)

George P. Eppeldauer, Steven W. Brown, G Dezsi, Irena Fryc, Yoshihiro Ohno

A spectrally tunable solid state source based on Light Emitting Diodes (LEDs) is being developed at the National Institute of Standards and Technology (NIST). The tunable source will emulate the spectral distributions of various light sources and can be

A Spectrally Tunable Solid-State Source for Radiometric, Photometric and Colorimetric Applications

January 1, 2004

Author(s)

Irena Fryc, Steven W. Brown, George P. Eppeldauer, Yoshihiro Ohno

Metrology for Remote Sensing Radiometry, ed. by S. Morain Page: A. Budge

January 1, 2004

Author(s)

Bettye C. Johnson, Steven W. Brown, Joseph P. Rice

Spectral Irradiance and Radiance Responsivity Calibrations Using Uniform Sources (SIRCUS) Facility at NIST

January 1, 2004

Author(s)

Steven W. Brown, George P. Eppeldauer, Joseph P. Rice, Jun Zhang, Keith R. Lykke

Detectors have historically been calibrated for spectral power responsivity at the National Institute of Standards and Technology (NIST) using a lamp-monochromator system to tune the wavelength of the excitation source. Silicon detectors can be calibrated

Temperature determinations of the Ag and Au-freezing points using a detector-based radiation thermometer

January 1, 2004

Author(s)

David W. Allen, Steven W. Brown, George P. Eppeldauer, Charles E. Gibson, Maritoni A. Litorja, Keith R. Lykke, Robert D. Saunders, Howard W. Yoon

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