[讨论]位置空间光照度与角度空间光照度 [复制链接]

请问各位同行，位置空间光照度与角度空间光照度是怎样的关系？它们之间的数学转换公式是什么？下面是一个方形通光管出来的光照度~ T;XEU%:LK  
0(VH8@h`O  
qAUqlSP5  
@Ck6s  
GNS5v-"H  
}{[H@uhjH  

What solid angle does that angular pixel represent? zuUf:%k}I  
.%_scNP  
To answer that question we project out from the local axis of the detector to construct a sphere some long distance away from the detector, centered on the detector. We then (conceptually) fire rays from this point at x, y angles of (5, 40), (5, 41), (6, 41), and (6, 40). Now we know that patch of area, we can compute the solid angle subtended by that angular pixel. G,9osTt/  
How is Radiant Intensity Defined %Ez%pT0TQ#  
e.hHpjWi?Z  
uNZJNrV%  
红色标出的那句是什么意思？ !;.i#c_u  
xfCq;?MupW  
^Crl~~Gk`  
 /s.sW l