在MTF文本中可以以看到，但不知道怎么提取出來 BqX"La,  
FIELD (X,Y)=( 0.00, 0.61)MAX, (  0.00, 65.00)DEG       Qe>_\-f  
      RELATIVE ILLUMINATION =  45.0 PER CENT               c-(RjQ~M5  
     ILLUMINATION (UNIT BRIGHTNESS) = 0.022769             :_6o|9J\t  
      DISTORTION = -16.31 PER CENT BInSS*L  
      RELATIVE ILLUMINATION =  45.0 PER CENT                850.0 NM       1      1180 J<"K`|F