[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~ JIVo=5c}  
fBf]4@{
  

描述:角度空间光照度

图片:angle space.JPG

"pOqd8>]  
3T"2S[gT  

描述:位置文件光照度

图片:postition space.JPG

uFz/PDOZ@  
B^H4Q 4-  

What solid angle does that angular pixel represent? K4iI:  
!x`;>0  
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. co \[{}}  
How is Radiant Intensity Defined K#_~ !C4L  
_{N0OX  
{ z-5GH|  
红色标出的那句是什么意思？ 6\; 4 4,3  
}rO?5  
5oVLv4Z9u  
pYYqGv^oa