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rc101268
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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.
I cannot figure out how to do the conversion.
The best way to do this is to measure physical quantities in order to calculate the irradiance (IMO, a more appropriate and less confusing term than intensity*) in (watts/cm^2). Here's the procedure.rc101268 said: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.
It is a simple formula (e.g. 4 or 5 in my post above). You just don't have the information you need to make the calculation.rc101268 said: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 its more like power emitted/receiving area (W/cm^2).
Wish there was a simple formula
LED light intensity refers to the amount of light that is emitted from an LED light source. It is measured in units of luminous flux, or lumens, which is the total amount of visible light that is produced by the LED.
LED light intensity is determined through the measurement of radiant power, which is the total amount of energy that is emitted by the LED light source. This measurement is typically taken using a radiometer or spectrometer.
LED light intensity and radiant power have a direct relationship. As the radiant power increases, so does the light intensity. This means that a higher radiant power results in a brighter and more intense LED light source.
Determining LED light intensity from its radiant power is important for a variety of reasons. It allows for accurate measurement and comparison of different LED light sources, helps in selecting the right LED for a specific application, and ensures that the LED is operating at its optimal level.
The accuracy of determining LED light intensity from its radiant power can be affected by factors such as the quality and calibration of the measuring equipment, the distance between the LED and the measurement device, and any external lighting that may interfere with the measurement.