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Physical Measurement Laboratory / Sensor Science Division

Optical Radiation Group

Projects/Programs

Displaying 1 - 25 of 32
SRMs

Aperture area measurements

Ongoing
Radiometric and photometric measurements require defining apertures. The accuracy to which these measurements can be accomplished requires minimization of the

Detector metrology

Ongoing
High performance optical radiometers with selected optical detectors are being designed, characterized, and calibrated in the Optical Radiation Group for the

Detector-based color scale

Ongoing
Until recently calibrations of tristimulus colorimeters were performed against lamp standards. However, the uncertainty of these source-based calibrations
Harnessing EUV capabilities for non-destructive metrology

EUV Scatterometry

Ongoing
The state of the art for measurement and inspection of the smallest printed features on an integrated circuits (IC) chip is a combination of electron scanning
Reflectance of two materials

Extreme ultraviolet optical constants

Ongoing
In the vacuum ultraviolet and extreme ultraviolet (EUV), the indices of refraction of all materials become complex: N = n + ik, or N = 1- d + ik. Here, n is the

Metrology of Dim Light Sources

Ongoing
Luminescent tags are molecular highlighters. They enable light-based biological assays, visualize biological processes, and are used as diagnostic and
Normalized Spectra for 3 types of Night Vision Goggles, a blackbody, and an IR LED

Night Vision Goggle Gain Calibration

Ongoing
NIST cooperates with the three services (Air Force, Navy, and Army) to realize a uniform night vision goggle (NVG) calibration system with low measurement
autonomous vehicles view from above

NIST Automated Vehicles Program

Ongoing
Building on a successful first-year Strategic and Emerging Research Initiatives (SERI) project NIST and Autonomous Vehicles (see 2022 NIST AV workshop and
underwater view of MOBY

Ocean Color

Ongoing
Ocean color radiometry provides essential information about phytoplankton concentration and dissolved organic matter, and hence about primary productivity
NIST Standard Photometer and NIST issued luminous intensity standard lamp

Photometry

Ongoing
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

Quantitative Information from Images

Ongoing
Photographs, or optical light images, are spatial records of light reflected or emitted from objects. Thus, they are prospective light measurements. In many
radiation thermometry

Radiation Thermometry

Ongoing
Calibration standards for radiation thermometry are disseminated in the form of radiation thermometers, tungsten strip lamps and blackbodies. These disseminated