Spatial scanning hyperspectral imaging combining a rotating slit with a Dove prism
Spatial scanning hyperspectral imaging combining a rotating slit with a Dove prism
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DOI：
10.1364/oe.27.020290
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发表时间：
2019-07-22
期刊：
影响因子：
3.8
通讯作者：
Korvink, Jan
中科院分区：
文献类型：
--
作者：
Abdo, Mohammad;Badilita, Vlad;Korvink, Jan
我们提出了一个新的概念，空间扫描高光谱成像。空间扫描是高光谱数据获取的主要方法之一，可以在宽光谱范围内提供高光谱分辨率。然而，传统的技术，如whiskbroom和推扫技术，遭受的目标和成像系统之间的相对运动的需要，这增加了硬件方面的复杂性和限制的应用可能性。我们的新方法结合了旋转狭缝和同向旋转的Dove棱镜。旋转狭缝通过在狭缝的每个角位置处从图像中选择一条线来扫描目标图像。旋转的Dove棱镜用于相对于透射光栅同步地重新对准来自所选择的图像线的透射光，以允许衍射光在图像传感器的像素列的相同范围上的投影，从而促进光谱信息的数据采集和提取。这种新方法能够在不需要相对线性运动或使用额外的外部设备的情况下对目标图像进行空间扫描，因此为更多的应用场景打开了大门。(C)根据OSA开放获取出版协议的条款，2019年美国光学学会
We present a new concept for spatial scanning hyperspectral imaging. Spatial scanning is one of the main methods used for hyperspectral data acquisition and can provide high spectral resolution over a wide spectral range. However, conventional techniques, such as the whiskbroom and the pushbroom techniques, suffer from the need for relative motion between the target and the imaging system, which increases the complexity on the hardware side and limits the application possibilities. Our new approach combines a rotating slit and a co-rotating Dove prism. The rotating slit scans the target image by selecting one line from the image at each angular position of the slit. The rotating Dove prism is used to synchronously re-align the transmitted light from the selected image line with respect to the transmission grating to allow the projection of the diffracted light over the same range of pixel columns of the image sensor to facilitate data acquisition and extraction of spectral information. The new approach enables the spatial scanning of the target image without the need for relative linear motion or the use of additional external equipment and therefore opens the door for more application scenarios. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement