b2aeae4c   
   From: boyd@apt0.sao.arizona.edu   
      
   Bullwinkle wrote:   
   > HI,   
   > i have a question about this datasheet:   
   >   
   > http://www.roithner-laser.com/previous/All_Datasheets/LEDs/ELJ-810-228B.pdf   
   >   
   > i don't understand why radiant intensity (1.2W/sr) is greater than   
   > radiant power (250mW): how can be possible?   
   > Thanks   
      
   W/sr will be greater than W when sr < 1   
   A collimating lens in front of the LED will do that.   
      
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