In this paper we describe a new spin detector designed and manufactured at SPbPU. This device makes it possible to analyze the polarization of the secondary electron flux conserving the information about the electrons' spatial distribution. The main stages of development, construction and testing the detector are discussed in details. As a result, the possibility of implementing such devices has been proved in principle. At the same time, both high spatial resolution of this device and its efficiency were demonstrated. Combining such detectors with hemispherical energy analyzers will make it possible to obtain spin-resolved dispersion images of the structure under study.