A Compact Single-Pixel Spectral Measurement System

A compact single-pixel spectral measurement system based on semiconductor diodes is described in this work. There are no optical components in the system configuration, which contribute to reducing the size of the equipment. Incident spectra can be reconstructed by using the photocurrent of semiconductor diode and spectral response functions. After data collection, data analysis, algorithm processing and other steps.The existing equipment can accurately reconstruct the spectra of narrowband monochromatic light at 508–556 nm and broadband light sources in the 478–598 nm wavelength range, achieving high resolution of 6 nm broadband spectra. The peak signal-to-noise ratio (PSNR) of the reconstructed spectra can reach up to 33.44 dB.