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Concave Grating Spectrometers

BioPhotonics
May 2011
StellarNet Inc.Request Info
 
The Black-Comet-HR concave grating spectrometers from StellarNet Inc. are designed for high-resolution applications. Available for measurements in the UV (200 to 600 nm) and visible (380 to 750 nm) ranges, the instruments achieve resolutions of 0.4 nm. The 16-bit devices are plug-and-play USB 2.0-powered, shockproof and vibration-tolerant, have no moving parts and include the SpectraWiz 32-bit software and development kit. The software includes drivers and is customizable for operation on Windows. It measures wavelength emissions, reflectance, transmission, absorption, concentrations and absolute intensities. It has built-in applications for spectroradiometry, spectrocolorimetry, ChemWiz chemistry laboratory concentration analysis and UV-level monitors. The devices use a 40-mm-diameter holographic concave grating with aberration correction to provide good spectral imaging and to improve spectral shapes.


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GLOSSARY
absorption
The transfer of energy from an incident electromagnetic energy field with wavelength or frequency to an atomic or molecular medium.
reflectance
The ratio of reflected flux to incident flux. Unless otherwise specified, the total reflectance is meant; it is sometimes convenient to divide this into the sum of the specular and the diffuse reflectance.
spectrometer
A kind of spectrograph in which some form of detector, other than a photographic film, is used to measure the distribution of radiation in a particular wavelength region.  
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