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首页> 外文会议>Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XII pt.1 >Performance and Application of a Very High-Speed 2-12 μm Ultraspectral FTIR Imager
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Performance and Application of a Very High-Speed 2-12 μm Ultraspectral FTIR Imager

机译：高速2-12μm超光谱FTIR成像仪的性能和应用

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摘要

As an offshoot of hyperspectral imaging, which typically acquires tens to slightly more than 100 spectral bands, ultraspectral imaging, with typically more than 1000 bands, provides the ability to use molecular or atomic lines to identify surface or airborne contaminants. Surface Optics Corporation has developed a very high-speed Fourier Transform Infrared (FTIR) imaging system. This system operates from 2 μm to 12 μm, collecting 128 x 128 images at up to 10,000 frames-per-second. The high-speed infrared imager is able to synchronize to almost any FTIR that provides at least mirror direction and laser clock signals. FTIRs rarely produce a constant scan speed, due to the need to physically move a mirror or other optical device to introduce an optical path difference between two beams. The imager is able to track scan speed jitter, as well as changes in position of the zero path difference (ZPD) position, and perform real-time averaging if desired. Total acquisition time is dependent on the return stroke speed of the FTIR, but 16 cm~(-1) (1024 point) spectral imagery can be generated in less than 1/5 second , with 2 cm~(-1) (8192 point) spectral imagery taking proportionately longer. The imager is currently configured with X-Y position stages to investigate surface chemistry of varied objects. Details of the optical design, focal plane array, and electronics that allow this high-speed FTIR imager to function are presented. Results of using the imager for several applications are also presented.
机译：作为通常会捕获数十到略多于100个光谱带的高光谱成像的副产品，通常具有1000个以上波段的超光谱成像提供了使用分子或原子线识别表面或空气传播污染物的能力。 Surface Optics Corporation已开发了一种非常高速的傅立叶变换红外（FTIR）成像系统。该系统的工作范围为2μm至12μm，以每秒10,000帧的速度收集128 x 128图像。高速红外成像仪几乎可以与任何至少提供镜向和激光时钟信号的FTIR同步。 FTIR很少会产生恒定的扫描速度，这是因为需要物理移动反射镜或其他光学设备以在两个光束之间引入光程差。成像仪能够跟踪扫描速度抖动以及零路径差（ZPD）位置的变化，并在需要时执行实时平均。总采集时间取决于FTIR的返回冲程速度，但是可以在不到1/5秒的时间内生成16 cm〜（-1）（1024点）的光谱图像，而2cm〜（-1）（8192点） ）光谱图像所需的时间更长。成像器当前配置有X-Y位置台，以研究各种物体的表面化学性质。给出了使该高速FTIR成像仪起作用的光学设计，焦平面阵列和电子设备的详细信息。还介绍了将成像器用于多种应用的结果。

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