红外探测器用滤光片的技术现状及应用

近红外滤光片和中红外带通滤光片在航天、气象和遥感等领域都有重要的应用。红外滤光片是让红外光透过而使其他波长光截止的滤光片，它的主要指标是峰值透过率。带通滤光片的重要指标是峰值透过率和通带半宽度。光学薄膜的膜系结构和具体设计对这些指标起决定性作用。本文主要介绍这两种滤光片的几例实际运用。

Current Status and Application of Filter Technology for Infrared Detector

Near infrared filters and middle infrared band-pass filters have their important applications in aerospace, meteorology, remote sensing and other fields. An infrared filter is a device which can transmit infrared radiation and cut off the light at other wavelengths. The peak transmittance is its main performance index. For a band-pass filter, its important performance indexes include the peak transmittance and the half width of the passband. These performance indexes are most dependent on the film structures and specific design of the optical films for infrared filters. Both kinds of filters and their practical applications are presented.