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与连续变焦光学系统相比,红外两档变倍光学系统具有结构简单、成像质量好、装调容易等特点,介绍了红外两档变倍光学系统的设计方法,并举例设计了一种方案合理、成像质量好的红外两档变倍光学系统,对光学系统的0视场、0.5视场、0.71视场、0.866视场和1视场成像质量进行了分析,给出了各个视场的分析结果,同时分析了温度变化对光学系统的影响,分析表明设计结果能够较好地满足实际工程需要。
Compared with the continuous zoom optical system, the infrared two-stage zoom optical system has the advantages of simple structure, good image quality and easy installation and adjustment. The design method of infrared two-stage zoom optical system is introduced and an example is given to design a reasonable scheme , Good imaging quality of the infrared two optical zoom system, the optical system 0 field of view, 0.5 field of view, 0.71 field of view, 0.866 field of view and 1 field of view image quality analysis is given, each field of view is given As a result, the influence of the temperature change on the optical system is also analyzed. The analysis shows that the design results can better meet the needs of the actual project.