一种红外多光谱成像光学系统设计

介绍了一种中波段的多光谱成像光学系统,由于窄带滤光片对光线入射角度有严格要求,故在光学系统中窄带滤光片的放置位置尤为重要.光学系统由三部分构成,分别为光束压缩单元、分光单元和成像单元,光线经过光束压缩单元口径压缩,但各个视场仍然保持平行光状态,入射到窄带滤光片上的角度均小于7°,满足窄带滤光片的最小入射角要求,最后经过成像单元成像在制冷型中波探测器上.通过细分光谱可以很好的提高目标识别能力.

A Multi-spectral Infrared Optical System

A multi-spectral infrared optical system is introduced, the position of narrow-band filter is very important for strict limits of rays angle on narrow-band filter. The optical system contains rays condensation system, narrow-band filter and image system. The aperture of rays is reduced after the rays condensation system, but the rays are still parallel. The angle of rays onto narrow-band filter is less than 7°,so it consists with the latest angle of narrow-band filter, the object is imaged on the cooled detector by image system at last. The ability of target detection is advanced by multi-spectral.