T
TKM
- Jan 1, 1970
- 0
What's the sense of this group regarding the current accuracy of LED
measurements? Are we seeing realistic numbers, especially lumen output,
from the manufacturers, test labs and others? What about the answers that
come from sites such as: http://led.linear1.org/lumen.wiz (millicandelas to
lumens) -- lots of caveats listed and it sounds like there's a major problem
defining LED beam angle.
I know there is standards development work going on that will likely help,
but has anyone done testing such as taking intensity data, doing a lumen
calculation and then putting the LED in an integrating sphere?
Terry McGowan
measurements? Are we seeing realistic numbers, especially lumen output,
from the manufacturers, test labs and others? What about the answers that
come from sites such as: http://led.linear1.org/lumen.wiz (millicandelas to
lumens) -- lots of caveats listed and it sounds like there's a major problem
defining LED beam angle.
I know there is standards development work going on that will likely help,
but has anyone done testing such as taking intensity data, doing a lumen
calculation and then putting the LED in an integrating sphere?
Terry McGowan