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1. 发明申请

US20130016220A1 PASSIVE MULTI-BAND APERTURE FILTERS AND CAMERAS THEREFROM 有权
标题翻译：被动多通道滤波器和摄像机
公开(公告)号：US20130016220A1
公开(公告)日：2013-01-17
申请号：US13181019
申请日：2011-07-12
申请人： KEVIN L. BROWN
发明人： KEVIN L. BROWN
IPC分类号： F21V9/04 , H04N5/33
CPC分类号： G01J3/2823 , G01J2003/1226 , H04N5/332
摘要： A multi-band aperture filter for optically coupling to a focal plane array (FPA) of a camera includes a substrate, and a first spectral coating on a first surface of the substrate that passes both a first longer and a second shorter wavelength band. A second spectral coating that passes the longer wavelength band and blocks the shorter wavelength band is on an outer annulus region, but not on an inner region on the first surface or a second surface of the substrate. The second spectral coating provides a larger aperture area for the longer wavelength band as compared to an aperture area for the shorter wavelength band to passively realize different F-numbers for the bands to provide substantially matched beam spot sizes on the detector array for the longer wavelength band and the shorter wavelength band, such as a long-wave infrared (LWIR) band and a mid-wave IR (MWIR) band.
摘要翻译：用于光学耦合到照相机的焦平面阵列（FPA）的多频带孔径滤光器包括基板和在基板的第一表面上通过第一较短波段和第二较短波长带的第一光谱涂层。通过较长波长带并阻挡较短波长带的第二光谱涂层位于外环面区域上，而不在基板的第一表面或第二表面上的内部区域上。与较短波长带的开口面积相比，第二光谱涂层为较长波段提供了较大的开口面积，被动地实现了波段的不同F数，从而在探测器阵列上为较长波长提供基本匹配的光束尺寸带和较短的波长带，例如长波红外（LWIR）波段和中波IR（MWIR）波段。

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