U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: C Cameron Miller (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 51 - 75 of 84

Living With Uncertainty

February 1, 2005
Author(s)
Carl C. Miller, Yoshihiro Ohno
This article discusses measurement uncertainty. Definitions that are used in describing measurement uncertainty along with terms that should not be used. The significance and the procedure for calculating measurement uncertainty are presented.

Standardization of LED Measurements Updates

September 15, 2004
Author(s)
Carl C. Miller, Yoshihiro Ohno
The article describes the current LED standards and recommendations. It also discusses the work in Commission Internationale De L Eclairage Technical Committees to form new recommendations for LED measurements of total luminous flux, partial LED flux and

Absolute Alignment of the Reference Retroreflectometer at NIST

June 1, 2003
Author(s)
Carl C. Miller
The National Cooperative Highway Research Program (NCHRP Project 05-16) awarded The National Institute of Standards and Technology (NIST) a contract to develop a dedicated reference instrument for measuring retroreflective materials, and a calibration

Luminous Intensity of LEDs at NIST

October 1, 2001
Author(s)
Carl C. Miller, Yoshihiro Ohno
Calibration facilities and procedures for measurement of Averaged LED intensity using the detector-based method have been developed at the National Institute of Standards and Technology (NIST). The scale has been established on two standard photometers

Total Luminous Flux Calibrations of LEDs at NIST

August 1, 2001
Author(s)
Carl C. Miller, Yoshihiro Ohno
The total luminous flux (lumen) is one of the most important characteristics of Light Emitting Diodes (LEDs), and is commonly measured using integrating sphere photometers. Large variations of measurement results are reported among different manufacturers

Luminous Intensity Calibrations and Colorimetry of LEDs at NIST

July 1, 2001
Author(s)
Carl C. Miller, Yoshihiro Ohno
Light Emitting Diodes (LEDs) are unique light sources differing greatly from traditional lamps in terms of physical size, flux level, spectrum and spatial distribution. The transfer of photometric scales from luminous intensity standard lamps to LEDs is

Luminous Flux Calibrations of LEDs at NIST

May 1, 2001
Author(s)
Carl C. Miller, Yoshihiro Ohno
The total luminous flux (lumen) is one of the most important characteristics of Light Emitting Diodes (LEDs), and is commonly measured using integrating sphere photometers. Large variations of measurement results are reported among different manufacturers