四通道阵列偏振成像自适应光学系统设计

摘要

In order to achieve the long-range target polarization imaging under the influence of atmospheric turbu-lence,a four-channel array polarized imaging adaptive optical system is designed based on aperture segmentation and self-adaption compensation technology.In order to achieve simultaneous polarization imaging,the part of polarization imaging system uses an array of four-channel configuration,and each channel can obtain the intensity image of the tar-get with different polarization components.Then the closed loop adaptive system is used to compensate wavefront aber-ration real-time.The focal length of the optical system is 364 mm,F number is 2.5,operating wavelength is 1.06μm, half-field angle is ±0.3°.The results show that the imaging performances of the designed system approach to diffrac-tion limit,and it can simultaneous achieve polarization imaging and compensate wavefront aberration.%在大气湍流影响下，为了实现对远距离目标偏振成像，基于孔径分割技术和自适应补偿技术，设计了四通道阵列偏振成像自适应光学系统。偏振成像部分采用四通道阵列结构，每个偏振通道获取目标不同偏振分量的强度图像，从而实现同时偏振成像。采用闭环自适应系统对波前畸变进行实时补偿。光学系统的设计焦距为364 mm，F 数为2．5，工作波长为1．06μm，半视场角为±0．3°。设计结果表明，系统成像性能接近衍射极限，可以实现同时偏振成像和波前畸变的校正。