Collimating LED light

Comments

3 responses to “Collimating LED light”

1. 

   Pariksheet Nanda

   January 5, 2013

   I wonder how one could mathematically derive the ~17 fold increase gained using the collimator here instead of brute feeding the software a million ray traces. But given that the LED intensity has a square and circular shape (figure 5 in the article with the blue to red lookup table) the 3D luminosity polar plot would probably make that theoretical analysis difficult.

   1. 

      Austin

      January 8, 2013

      Good question! Possibly some limitation in ZEMAX?

2. 

   Pariksheet Nanda

   January 5, 2013

   This explains why bicycle tail lights with parabolic mirrors are so blindingly bright!