Guys,
I am NOT an engineer so forgive me...
My company is developing an LED road marker that outputs light using Cree's 15 degree round LED.
This lamp is rated at 16800-35000 mcd when driven with 20mA.
We are driving it with quite a bit less than 20mA.
I have an Amprobe LM-200LED light meter.
What I'm trying to do is calculate the the output of our LED relative to the
unit of measure in the tile of this post (http://www.amazon.com/dp/B005E0Y1KG/?tag=cpf0b6-20). This is the unit of measure
the Department of Transportation uses to specify how bright a road marker should
be....
Can anyone explain to me how to use this meter to measure the LED's output
in terms of mcd/m^2/lx?
(For example, I'm not sure how close to hold the meter to the light source.)
Thanks in advance for any help.
I am NOT an engineer so forgive me...
My company is developing an LED road marker that outputs light using Cree's 15 degree round LED.
This lamp is rated at 16800-35000 mcd when driven with 20mA.
We are driving it with quite a bit less than 20mA.
I have an Amprobe LM-200LED light meter.
What I'm trying to do is calculate the the output of our LED relative to the
unit of measure in the tile of this post (http://www.amazon.com/dp/B005E0Y1KG/?tag=cpf0b6-20). This is the unit of measure
the Department of Transportation uses to specify how bright a road marker should
be....
Can anyone explain to me how to use this meter to measure the LED's output
in terms of mcd/m^2/lx?
(For example, I'm not sure how close to hold the meter to the light source.)
Thanks in advance for any help.