以夫朗禾费衍射理论为基础,结合微透镜,设计了一种高性能的数字式太阳敏感器复合光学系统。分析了光学系统的组成,建立了光学系统的数学模型,设计了光学系统的焦距、孔径和微透镜参量,并进行了成像的数值仿真。仿真结果表明,与基于掩模的光学系统相比,这种新型的复合光学系统成像光斑能量分布集中,保证计算光斑中心位置的高精度,使敏感器具有大视场和高精度的特点。

Based on the Fraunhofer diffraction theory and a microlens, a high-performance complex optical system for a digital sun sensor is designed . The structure of this optical system is analyzed and the mathematic model is established. The focus, aperture and microlens parameters of the optical system are given and the numeric simulation is carried out. The simulative results show that the energy distribution of the spot formed by the novel complex optical system is concentrated compared with a masking optical system, so the high calculational accuracy of facular centroid is guaranteed. Meanwhile, the sensor with the novel optical system possesses a large field of view and high accuracy.