[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~ RV;!05^<  
J+ts  

描述:角度空间光照度

图片:angle space.JPG

<#*.}w~  
.Y\EE;8%  

描述:位置文件光照度

图片:postition space.JPG

A gWPa.'3  
jn=:G+0  

What solid angle does that angular pixel represent? rRb+_]Lg  
~ ?^/u8  
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. n7! H:{L  
How is Radiant Intensity Defined tef^ShF]  
z&}-8JykH  
D1T@R)j  
红色标出的那句是什么意思？ T@Y
GB]*Y  
{hdPhL  
j6YiE~  
m%r/O&g