对红外显微光学系统进行了研究。根据光学系统设计指标，应用无限远校正方法和反向追迹的方法设计两款不同放大倍率的红外显微物镜。并给出了两款工作波段在8～12 μm，放大倍率为1×和3×，工作距离均为25 mm，物方线视场为20 mm 的透射式红外显微物镜的设计结果和公差分析。关键词：红外显微物镜；无限远校正；反向追迹；光学设计

The paper discussed infrared microscopic optical system. According to the optical system design target, infinity correction method and the reverse tracing method were applied to design two different magnification IR microscope objectives. The design results and the analysis of tolerance of the two infrared microscopes were given, of which working band is 8-12 micron, working distance is 25 mm, the line view is 20 mm, and magnifications are 1×and 3×separately.