[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~ (_%JF[W  
TeGLAt  

描述:角度空间光照度

图片:angle space.JPG

[kp7LA"`  
-Iruua7b  

描述:位置文件光照度

图片:postition space.JPG

Ybn=Gy  
R uFu,H-  

What solid angle does that angular pixel represent? ss*2TE7  
82@;.%  
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. {If2[4!z  
How is Radiant Intensity Defined 4iPua"8  
BI]ut|Qw  
dXK~ Z:  
红色标出的那句是什么意思？ _I70qz8  
OTFu4"]M  
iDkWW  
CyBM4q
yH