Linearity Testing Device For The Photoelectric Detecting System Of Solar Spectrometers

According to the optical beam superposition principle, a set of linearity measurement devices of spectrometer photoelectrical detecting system was developed. It consists of a 300 W super-quiet xenon lamp, a 250 W halogen tungsten lamp, a neutral filter group, double apertures and optical imaging system. The radiant power of the optical beams is manipulated with neutral filters and optical beam superposition is achieved using double apertures and optical imaging system. The spectral range of this device is 200-2 400 nm and the dynamic range of the linearity measurement is 10(4). It can simulate the extraterrestrial solar spectral irradiance and can be used for measuring linearity in solar spectrometer photoelectrical systems and silicon photodiode standard detection.