设计并实现了一种基于微悬臂梁焦平面阵列的凝视型激光告警系统。该系统通过微悬臂梁焦平面阵列及成像CCD来实现对入射激光的精确定向。入射激光通过红外镜头辐射到微悬臂梁焦平面阵列时会使微悬臂梁发生变形，通过光读出系统将这种变化成像在CCD上就可以判断出激光的入射方向。实验结果表明：镜头焦距为60 mm、微悬臂梁面元为80 μm×100 μm时，告警系统的视场角为±15°，分辨率可达到0.5°。此告警系统视场角大、定向精度高，并且避免了激光对CCD的干扰及损坏。

A novel staring laser warning system based on microcantilever focal plane array is presented. The direction of incident laser can be measured by CCD and microcantilever focal plane array. The microcantilever bends owing to laser radiation captured by infrared lens, meanwhile CCD records the change by means of optical readout system. The experimental results indicate that the field of view is ±15° and the resolution is 0.5°, when the focal length of infrared lens is 60 mm and the microcantilever size is 80 μm×100 μm. The warning system, with large filed of view and high resolution, avoids the interference and damage of CCD caused by laser radiation.