Recent content by rc101268

I'll just find the datasheet of the LED, hopefully all that information should be there. Thanks aabottom.

The LEDs are being used to experiment with photocatalysis. @xts It's the light intensity of the source (LEDs) @aabottom I was hoping I won't have to go down that road as I don't have a calibrated photodiode. I think from your asterisked comment, what I am looking for is irradiance but...

I have LEDs of 0.7mW, but for my experiments, I want my values to be in light intensity unit - W/cm2. I cannot figure out how to do the conversion.

^^ Thanks The radiant power(watt) of the LED plotted against time is given in percentage on the data sheet, but no information on the distance it was measured. I want to believe this radiant power is equal to the lighting flux?

How can I convert the voltge measured across a photodiode to light output or intensity or any other photonic unit? I am trying to measure the light intensity/output of some LEDs using a photodiode but the photodiode measures voltage as a function of light intensity.