Assembly And Adjustment Error Analysis Of Infrared Target Simulator Beam Expander Coupled System

Infrared target simulator is an important part of Semi-physical Infrared Simulation System, which play an important role in the infrared homing warheads, satellite end airborne remote sensing. In the infrared homing warhead experiments, using infrared target simulator to simulate the movement and distance of adjustable target source, which is used to detect sensitivity of the missile IR seeker system, modulation characteristics and tracking performance.In this issue of infrared target simulator developed,Microlens array is a new expansion beam elements, whose role is to play the role of beam expander and the coupling effect of interference beam.It Is the critical components of subject. Micro lens array is composed of lens array, Microlens array is formed by the lens array,which have micro-level aperture and the relief depth. It not only has the imaging features of traditional lens, focusing and other basic functions, but also have the characteristics of small cell size, high integration. Makes it not only to complete the traditional function of optical elements can not be completed, but also constitute many new optical system.To test the micro-lens array processing quality of components and the application of results, this paper reseach on two aspects of the following:1. Analysis of microlens array in the infrared target simulator for individual alignment errors on the coupling efficiency, compile a custom optimization evaluation function, by the use of macros of optical design software zemax and use it carried out micro-lens array alignment simulation.2. Analysis of the equipment transfer error of light source position and not coaxial system in infrared target simulator. Analysis of error types, obtained tolerance limits, adjusted for the system installation and lay a good foundation.