From: oh2hvj@sral.fi   
      
   Salmon Egg  writes:   
      
   > In article , Mikko OH2HVJ    
   >> So, the question is: how would you explain the idea of optical invariant   
   >> as simply as possible ?   
      
   > I presume that by "optical invariant" you mean either conservation of   
   > energy or, more subtly, brightness. Try again. Good luck.   
      
      
   Correct.. I'm trying to get my customer understand that with the   
   current limitations (total of 15mm^2 LED surface radiating into   
   almost half-space and a 0.8mm NA 0.5 fiber) it is impossible   
   to get more light into the fiber. Also, I'd like to be able to   
   explain the same to our EEs.   
      
   --   
   Mikko   
      
   --- SoupGate-Win32 v1.05   
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