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   sci.optics      Discussion relating to the science of op      12,750 messages   

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   Message 10,949 of 12,750   
   Mikko OH2HVJ to brian_ray3303@yahoo.com   
   Re: Multiple LEDs to fiber   
   20 Aug 11 21:26:08   
   
   ec578016   
   From: oh2hvj@sral.fi   
      
   BR  writes:   
      
   > Conservation of etendue (product of source area & solid angle the   
   > source subtends):   
      
   > 2. On the source side, you have to treat the 8 LEDS as a single   
   > source, with the 'source area' being the areas of the LEDs plus the   
   > empty areas between them. So you may want to arrange them as compact   
   > as you practically can.   
      
   Thanks, I'll try to do this. One idea was actually a custom package   
   with the LED chips mounted on a 2mm circle.   
      
   --   
   Mikko   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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