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Lighting and Color Group
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Welcome
Programs/Projects
Detector metrology—High performance radiometers with selected optical detectors are being designed, characterized, and calibrated in the Optical Sensor Group for the 200 nm to 20 µm wavelength range. These … Color and appearance—We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, and gloss under a variety of geometrical conditions … Photometry—The purpose of photometry is to measure light in a way that takes the sensitivity of human visual system into account. While radiometry measures light in all spectral regions, including ultraviolet … Applied spectroradiometry and imaging metrology—Spectroradiometers are widely used for acquiring colorimetric, photometric, and radiometric quantities with a single measurement for a variety of applications in LEDs and solid-state lighting (SSL) … Solid-state lighting metrology—With the rise of new, energy-efficient solid-state lighting (SSL) systems has come the need for new performance metrics and measurement methods to address their unique construction and operating … Vision science—The Vision Science program was established to develop new photometric and colorimetric standards based on vision science to facilitate development of emerging technologies, such as solid-state … |
Highlights
Products and Services
Contact
Lighting and Color Group: Lorna Armiger, Secretary 100 Bureau Drive, M/S 8441 |
The Lighting and Color Group establishes the national measurement scale for the SI unit, the candela; provides measurements of absolute spectral responsivity of optical detectors in the spectral region from 200 nm through the IR using a high accuracy absolute cryogenic radiometer; performs research and development of methods and optical detectors for applications in radiometry, photometry, colorimetry, and spectroradiometry; provides calibration services for detector spectral responsivity, photometry, and colorimetry of light sources.