5.1 High Efficacy

The efficacy of LEDs is improving rapidly.

Latest lab data showed efficacy more than 230 lumens per Watt.

However, in real lighting fixture we have to consider several factors:

  • control gear performance
  • luminous flux depreciation with increasing junction temperature
  • optical losses, etc.

which reduce the overall system efficacy.

 

 

LED Efficacy

 

 

5.2 Controllability
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