共窗口微光与红外光学融合系统研究

Design of a Low Light and Infrared Optically Fused System with Shared Objective Lens

现代新型微光与红外图像融合光电侦查系统,集多个光电传感器于一体,提供多光谱、大信息量的融合图像,已经成为一种未来军用光电仪器的发展趋势。而传统的双通道微光与红外光学融合系统,由于两路独立物镜布局结构会导致调校工艺复杂、图像配准困难等问题。为此,本文研究了一种共窗口微光与红外光学融合系统,选用微光像增强器和非制冷红外探测器作为核心光电成像器件;在光学设计中,应用卡塞格伦式光学系统来构建基础光学结构,在系统内部利用分光镜和分光膜来实现不同光谱的独立成像,并选用了宽光谱的光学材料来合并光学通道,最后在目镜前端利用合像棱镜将红外视频图像与微光增强图像进行光学融合。

Modern new pattern optically fused thermal and image intensified night vision surveillance system which congregate several photoelectrical sensor together,supplies multi-spectral fused image with large content of information,has became a developing tend in the future.The traditional double channel low light and infrared optically fused system has difficulties in assemble craftwork and boresight alignment because of its double independent objective layout.Therefore,the paper designed a low light and infrared optically fused system with shared objective lens which use the image intensifier and un-cooled IR FPA as the key photoelectric image device.The paper adopt Cassegrain form to construct the system and use the spectroscope and splitting film to achieve the independent image of the different spectral,simultaneously,use broad spectral material to combine the optical channel.The infrared video image and the intensified image were optically fused by the fusion prism in front-end of the eyepiece.