提出了一种新的基于哈特曼波前传感器(SHWS)的光学读出系统。该系统利用SHWS探测焦平面阵列(FPA)单元在受热前后反射波前斜率的变化量重构被探测物体的红外辐射图像。在理论上详细讨论其成像性能后,实验获得了单元尺寸为60μm×60μm,阵列大小为34 pixel×38 pixel的高温物体红外图像,其噪声等效温度差(NETD)约为3.8 K。优化系统参数设计,可以提高哈特曼波前传感器对到达角的测量精度进而获得更小的噪声等效温度差。 A new optical readout system based on Hartman wavefront sensor (SHWS) is proposed. The system reconstructs the infrared radiation image of the detected object by using the variation of the slope of the reflected wavefront before and after the heating by the SHWS FPA unit. After discussing its imaging performance in detail, the infrared image of high temperature object with unit size of 60μm × 60μm and array size of 34 pixel × 38 pixel was obtained, and its equivalent noise temperature difference (NETD) was about 3.8K. Optimize the system parameter design, can improve the measurement accuracy of Hartmann wavefront sensor on the angle of arrival and thus obtain a smaller noise equivalent temperature difference.