Algorithm for expanding the dynamic range of a Shack-Hartmann sensor by using a spatial light modulator array

作     者：Lindlein, N Pfund, J Schwider, J 

作者机构：Univ Erlangen Nurnberg Inst Phys Lehrstuhl Opt D-91058 Erlangen Germany 

出 版 物：《OPTICAL ENGINEERING》 (光学工程)

年 卷 期：2001年第40卷第5期

页      面：837-840页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 0702[理学-物理学] 

主　　题：Shack-Hartmann sensor microlenses spatial light modulator coding algorithm 

摘      要：Normally, the dynamic range of a Shack-Hartmann sensor is limited by the fool leaving their respective subapertures, thus a definite attachment of the foci to their subapertures is difficult. By using an array of spatial light modulators in front of the microlenses of the sensor to switch on and off the subapertures, a definite assignment of the spots to their subapertures is possible. We present a coding algorithm that needs only log(2) N+1 frames to assign N spots unequivocal to their subapertures. (C) 2001 Society of Photo-Optical Instrumentation Engineers.