From: oh2hvj@sral.fi   
      
   Salmon Egg  writes:   
   > In article , Mikko OH2HVJ    
      
   >> What would be the best way to combine multiple LEDs to a 800um NA 0.22   
   >> fiber bundle ?   
      
   > This smacks of trying to beat the second law of thermodynamics   
   > (conservations of brightness). It may be that I do not understand the   
   > way you formulated it. Please give more information.   
      
   I know this will not be an efficient one and I'm looking for practical hints.   
   The total efficiency of the optical system may be around 10-100ppm from DC to   
   light shining on the samples. I wrote some more info on an another reply.   
      
      
   --   
   Mikko   
      
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