Determination of the point spread function of a computer-generated lens formed by a phase light modulator

In various fields of photonics, there is a tendency to pass from elements of physical optics to elements of flat optics, primarily, due to a decrease in the dimensions of instruments and devices. Most frequently, spatial light modulators are used to efficiently and immediately simulate flat phase elements. In this work, we investigate the possibility of replacing a lens optical system with a computer-generated lens. The novelty of the work is a comparative analysis of the point spread functions of the lens optical system and the computer-generated lens. Numerous experiments confirm the obtained result.