Vertailuvalonlähde
Vertailuvalonlähde, which translates to "comparison light source" in English, is a term used in metrology and optical engineering. It refers to a controlled and standardized light source whose properties, such as spectral distribution, intensity, and color temperature, are precisely known and stable. This known source is used as a reference point for calibrating or comparing other light sources.
The primary function of a vertailuvalonlähde is to provide a benchmark for accurate measurements. When evaluating
These sources are often developed and maintained by national metrology institutes or specialized calibration laboratories. They