Zernike模式系数传感器的优化设计

Optimization of Zernike Mode Parameter Sensor

优化设计的目的是用最少的通道数（探测器的像元数）探测最高阶的波前畸变。由此使探测器的探测精度高，系统简单，在极弱光探测条件下可探测光强低。由响应矩阵元的定义式可知，影响Ｚｅｒｎｉｋｅ模式系数传感器可探测和重构波前Ｚｅｒｎｉｋｅ多项式项数的主要因素是探测器的形状，即探测器的内部像元数和边缘像元数及它们的排列形状。如何根据需要重构的Ｚｅｒｎｉｋｅ多项式的项数来选择合适的探测器像元数及它们的排列，是本文优化设计的研究目的。

The Purpose of optimization is to detect the highest order wavefront distortion with the least channels(pixel numbers of a detector),so as to make detector have good detecting accuracy,simple structure and to make the detectable light level lower under the condition of very weak hight.From the definition formula of response matrix elements we know that the key factor influencing detectivity of Zernike mode parameter sensor and the number of terms for reconstituting wavefront Zernike polynomi-al is the shape of detector.that is,the inner and edge pixel numbers and their arrangement.How to choose suitable pixel numhers and their arrangement according to the terms needed for reconstituting Zernike polynomial is the purpose of this article.