Spectral Irradiance Meters
Spectral irradiance meters are preferable to traditional filter based irradiance instruments for analytical measurements because they acquire hundreds of data points across the visible spectrum. They provide you with the precision required to accurately measure narrow bandwidth LEDs and discontinuous light sources.
Although filter based instruments are desired for certain properties such as cost, speed and portability, they only acquire three data points across the entire spectrum of light to yield radioimetric values by using filters that correspond to the normal human eye response. These filters can only be manufactured to a certain degree of accuracy, therefore filter based meters are susceptible to errors. Additionally, filter based instrumentation lacks the resolution needed to accurately describe narrow bandwidth light sources. Having multiple sensors enables spectral irradiance meters to measure the entire spectrum simultaneously and directly calculate all pertinent radiometric data, making it the ideal choice for evaluating LEDs, which are today’s dominant light source.
The SpectraRad Xpress is a miniature spectral irradiance meter designed for field, industrial, and lab applications with a plug-and-play USB 2.0 interface. A transmissive cosine corrector is coupled to a spectrometer which then is irradiance calibrated against a NIST traceable Tungsten light source. Optimized software is provided for characterization and measurement of many application lighting devices and systems. Standard software features include timeline recording, data smoothing, illuminance (lux), chromaticity, color temperature, external triggered pulsed light capturing, and other data handling functions. The SpectraRad Xpress is ideal for lamp and LED characterization (requires input optic option), color analysis, solar studies, photostability testing, photobiology and photochemistry.
The SpectraRad is a miniature TE Cooled spectral irradiance meter designed for industrial applications and lab use with a USB 2.0 interface. The SpectraRad is equipped with a fiber coupled right angle transmissive cosine corrector, which is irradiance calibrated against a NIST traceable tungsten light source. BWSpec software is provided for characterization and measurement of many application lighting devices and systems. The SpectraRad is ideal for lamp and LED characterization, color analysis, photostability testing, photobiology and photochemistry. Standard software features include timeline recording, data smoothing, illuminance (lux), chromaticity, color temperature, and other data-handling functions.
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