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美国专利US7485870 (2009年2月3日授权)本发明提供一种气动型红外探测器,它包括一个敏感腔和一个参考腔,它是通过测量其敏感腔的气动膨胀来探测红外辐射的。其原理是,敏感腔吸收红外辐射能量后,其温度上升,从而发生气动膨胀。参考腔通过机械方法与敏感腔相连,它是用来控制敏感腔的气动膨胀的。这种膨胀或者用电学方法探测,或者用光学方法探测。本专利说明书共33页,其中有23张插图。
U.S. Patent 7485870 (issued February 3, 2009) The present invention provides a pneumatically operated infrared detector that includes a sensitive cavity and a reference cavity that detect infrared radiation by measuring the aerodynamic expansion of its sensitive cavity. The principle is that after the sensitive cavity absorbs the infrared radiation energy, the temperature rises and aerodynamic expansion occurs. The reference cavity is mechanically connected to the sensing cavity, which is used to control the aerodynamic expansion of the sensing cavity. This swelling is either electrically detected or optically detected. There are 33 pages in this patent specification, of which there are 23 illustrations.