[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~ mt^`1ekoY  
@T/qd>T o  

描述:角度空间光照度

图片:angle space.JPG

(HJ$lxk<2h  
ol#yjrv  

描述:位置文件光照度

图片:postition space.JPG

sW'6}^Q  
<S{7Ro  

What solid angle does that angular pixel represent? 3jS7 uU  
~9bv Wd1D  
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. RB *P
0  
How is Radiant Intensity Defined N-xnenci  
-FaaFw:Z;A  
*cPN\Iu.W  
红色标出的那句是什么意思？ .}`V I`z*  
}\EL;sT  
w7r'SCVh3+  
,k\/]9