一体化红外双波段成像光学系统

Unified infrared imaging optical system of dual spectral

根据目标在不同光谱波段下的光学特征设计了双波段系统,具有优于单色探测系统的探测能力和复杂环境下的目标识别与干扰判别能力,提高了有效侦察率、大大降低了虚警率。介绍了几种常见红外双波段系统,简述其原理,通过相应具体实例重点分析研究了折反式红外双波段以及折射式制冷型中波红外和长波红外双波段,采用共用窗口一体化红外双波段形式,结合二次成像和100%冷光阑效率技术,同时在两个波段内较好地完成了系统像差的校正,且两波段相对孔径、视场和焦距一致,因而可以融合中波红外图像和长波红外图像,充分利用中波红外、长波红外各自优点,符合实际应用需要。

The dual spectral system was designed according to the different optical characteristics of targets in different spectral ranges, its advantages was superior to monochromatic detection system in detectability, target recognition under complex environment, and disturbance discrimination. It can enhance effective reconnaissance probability and reduce false alarm probability greatly. Several conventional infrared dual spectral systems were introduced. Their principle was described in brief. By means of corresponding practical examples, hybrid refractive-reflective infrared dual spectral systems and refractive cooled MWIR and LWIR dual spectral systems were analyzed and investigated. Using common window and unified infrared spectral formation, and combining re-imaging and 100% cold shield efficiency technology, aberrations of optical systems within the dual spectral ranges were corrected simultaneously well. And the relative aperture, field of view, and focal length were same for both spectral regions. The obtained MWIR and LWIR images can be fused together so as to take the full advantages of both MWIR and LWIR, and meet the needs of with practical applications.