Certification of a Two-Channel Automated Infrared Image Synthesis System for Testing Array Photodetectors

Abstract

When creating highly efficient sensitive array photodetectors, it is necessary to test them using specialized systems. A program and methodology for the primary (periodic) certification of a two-channel automated system for the synthesis of dynamic and static infrared images designed to control the characteristics of an array photodetector have been developed. The methodology of certification of the most significant characteristics of the system is described, which are: the accuracy of positioning a three-coordinate scanning device with numerical software control; the size of the linear field in the image plane of the object and background channels; operation spectral range and irradiation range; the diameter of the point object and the energy concentration factor in the object circle of confusion in the image plane of the object channel. The system implements an independent change in the irradiation levels in the optical channel of the object in the range of 10–9–10–6 W/cm2 and in the background channel in the range of 10–9–10–7 W/cm2. The minimum size of a dynamic object does not exceed 30 μm, the velocity of its displacement reaches 250 μm/s. The three-coordinate positioning system provides displacement of the object along the coordinate axes up to 200 mm with an error of less than 2 μm.