A multispectral image camera captures image data within specific wavelength ranges in narrow wavelength bands across the electromagnetic spectrum. Images from a multispectral camera can extract a additional information that the human eye or a normal camera fails to capture and thus may have important applications in precision agriculture, forestry, medicine, and object identification. Conventional multispectral cameras are made up of multiple image sensors each fitted with a narrow passband wavelength filter and optics, which makes them heavy, bulky, power hungry, and very expensive. The multiple optics also create an image co-registration problem. Here, we demonstrate a single sensor based three band multispectral camera using a narrow spectral band red–green–blue color mosaic in a Bayer pattern integrated on a monochrome CMOS sensor. The narrow band color mosaic is made of a hybrid combination of plasmonic color filters and a heterostructured dielectric multilayer. The demonstrated camera technology has reduced cost, weight, size, and power by almost n times (where n is the number of bands) compared to a conventional multispectral camera.

中文翻译：

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基于单色CMOS图像传感器上集成的窄光谱彩色马赛克的基于单传感器的多光谱成像相机

多光谱图像相机捕获整个电磁光谱中窄波长带中特定波长范围内的图像数据。来自多光谱相机的图像可以提取人眼或普通相机无法捕获的其他信息，因此在精密农业，林业，医药和物体识别中可能具有重要的应用。常规的多光谱相机由多个图像传感器组成，每个图像传感器都配备了窄通带波长滤波器和光学器件，这使其笨重，笨重，耗电且非常昂贵。多种光学器件还产生图像共配准问题。在这里，我们演示了一个基于单个传感器的三波段多光谱相机，该相机使用了窄谱带的红-绿-蓝马赛克，并在单色CMOS传感器上集成了拜耳图案。窄带彩色马赛克由等离子彩色滤光片和异质结构介电多层的混合组合制成。与传统的多光谱相机相比，已证明的相机技术将成本，重量，尺寸和功率降低了近n倍（其中n是波段数）。