Chroma Meters (or color meters) primarily measure chromaticity, which is the quality of a color. Chromaticity is a measurement of hue and colorfulness
LED Analyzers measure the luminous flux of LED lights, meaning that the unit measures the total visible energy emitted by a light source
Light Meters / Illuminance Meters measure the amount of visible incident light illuminates a surface from a variety of light sources
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Measurment of light, measurement with light
Gigahertz-Optik is a German company founded in 1986. Today they boast one of the most extensive ranges of spectral broadband lightmeters and spectral measurement instruments on the market. Gigahertz-Optik also offers laboratory recalibration (with multiple certifications) for all of their instruments to ensure that all their products maintain the highest possible calibration and traceability. In the end, this guarantees the most accurate measurements of spectral sensitivity and irradiance.