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随着红外技术的发展,大视场、高分辨率、高灵敏度的红外系统越来越广泛地采用多元探测器,而随着元数的增加,探测器的面积要求越来越小。多元探测器的性能测试要求有一个光能稳定,光点小于单个探测器面积一定值的测试系统。根据以往的经验,我们认为要实现小光点(可见光点≤50μm)系统必须采取以下两方面措施:1.光学加工总有一定象差,而f_数越小则加工越困难,要保证光加工具有尽可能小的象差,f_数必须足够大。2.根据测量和被测(或发射和接收)两个系统的放大倍率关系式:
With the development of infrared technology, the multi-detector becomes more and more widely used in infrared systems with large field of view, high resolution and high sensitivity. As the number of elements increases, the area requirements of detectors become smaller and smaller. Multivariate detector performance testing requires a light energy stability, the light spot is smaller than a single detector area of a certain value of the test system. Based on past experience, we believe that to achieve a small spot (visible light point ≤ 50μm), the system must take the following two measures: 1. Optical processing always have some aberrations, and the f_ number is smaller the more difficult processing, to ensure that light Machining with as small as possible aberrations, f_ number must be large enough. 2. Depending on the magnification of the two systems measured and measured (or transmitted and received):