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美国专利US7494232 (2009年2月24日授权)本发明提供一种可用于保护长波和中波红外探测器的被动式红外光学限幅器。这里的长波红外指的是波长为7至14μm的红外谱区,而中波红外则指的是波长为3至5μm的红外谱区。本发明提供的光学限幅器主要是供长波红外探测器使用的,但它也可以在中波红外谱区使用。该光学限幅器由一层红外限幅层和一个合适的衬底组成,它是通过将辐射导向探测器的方式来限制
U.S. Patent No. 7,494,232 issued February 24, 2009 The present invention provides a passive infrared optical limiter that can be used to protect long-wave and mid-wave infrared detectors. Long-wave infrared here refers to an infrared region of 7 to 14 μm in wavelength, and medium-wave infrared refers to an infrared region of 3 to 5 μm in wavelength. The optical limiter provided by the present invention is mainly used for long-wave infrared detectors, but it can also be used in the mid-infrared infrared region. The optical limiter consists of an IR limiting layer and a suitable substrate, which is limited by directing the radiation toward the detector