Hole-array spatial light modulation for single-pixel imaging

A single-pixel camera composed of optical coding masks, a photo detector, and a computational decoder, and therefore has very simple optical and electrical architectures. The optical coding masks are composed of holes on a substrate and are arranged on the circumference of a disk to allow mask switching by rotation of the disk. The main features are a simple structure that brings low cost in optics and electronics, no path difference in the mask, and no wavelength dependence except for a dependence on air for wideband spectral imaging.