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基于大面阵铟镓砷探测器的短波红外光学系统设计
Optical Design of Shortwave Infrared System Based on Large-Area Array Indium Gallium Arsenic Detector
【摘要】 近年来,随着铟镓砷探测器的迅猛发展,短波红外技术在透雾以及夜间探测具有独特的优势,使其广泛应用于夜间导航及辅助驾驶、军事勘察等领域。随着全国产化1280×1024像素大小的铟镓砷探测器陆续推出,开展大面阵大相对孔径的短波红外光学系统研究的重要性也日益凸显。针对特殊背景(如夜视成像)的需求,本文主要设计了一款基于1280×1024像素,像元间距15μm大面阵铟镓砷探测器的短波红外光学成像系统,该光学系统可以实现高分辨率和大视场成像。本光学系统采用经典双高斯结构形式,利用常见可见光材料适当配比,完成复消色差短波红外系统设计,该系统具有小型化、大相对孔径、高分辨率、工艺性优良等优势。
【Abstract】 In recent years, with the rapid development of indium gallium arsenide(InGaAs) detectors,shortwave infrared(SWIR) technology has demonstrated unique advantages in fog penetration and nighttime detection, leading to widespread applications in night navigation, assisted driving, military reconnaissance, and other fields. The introduction of 1280×1024 pixel InGaAs detectors in China has underscored the growing importance of developing SWIR optical systems with large-area arrays and large relative apertures. To address the demands of night vision imaging in complex environments, this study presents the design of a SWIR optical imaging system based on a 1280×1024 pixel InGaAs detector with a 15 μm pixel pitch. The system enables high-resolution, wide-field imaging and is built upon a classical double Gaussian optical configuration. By employing a carefully selected combination of commonly used visiblelight optical materials, the design achieves apochromatic correction across the SWIR band. The resulting optical system offers key advantages, including compact size, large relative aperture, high resolution, and excellent manufacturability.
【Key words】 shortwave infrared; large-area-array detector; optical system design; apochromatic;
- 【文献出处】 红外技术 ,Infrared Technology , 编辑部邮箱 ,2025年06期
- 【分类号】TN215
- 【下载频次】38