【摘要】 由于温度变化会导致红外光学系统的成像质量变坏,因此,对于工作环境温度在-45～60℃之间的长波红外折射光学系统来说,无热化设计成为光学系统设计的难点和关键。为研究不同的无热化补偿方式的特点,分别设计了基于光学被动式无热化补偿和基于机械被动式无热化补偿的两种长波红外非制冷光学系统,对比分析了两种光学系统的优缺点,给出了选择无热化补偿方法的基本原则。更多还原

【Abstract】 The change of temperature could cause image degradation for an infrared optical system.So athermalisation becomes the difficulty and key in the designing of LWIR optical systems for working under temperature range of-45～60℃.To study the characteristic of different athermal compensation methods,two kinds of uncooled optical system respectively based on athermal techniques of optical passive compensation and mechanical passive compensation are designed.The basic selection principle of athermal compensation methods is put forward by comparing the merits and faults of the systems.更多还原