Spectral irradiance for diverse LEDs
A collection of emission spectra of light-emitting-diodes from different suppliers.
leds.mspct
A "source_mspct" object containing 51
"source_spct" objects.
In each of the member spectra, the variables are as follows:
w.length (nm)
s.e.irrad (W m-2 nm-1)
The "source_mspct" object contains "source_spct"
objects with spectral emission data.
The variables in each member spectrum are as follows:
w.length (nm)
s.e.irrad (absolute or normalized).
When the exact distance from LED to cosine diffuser is not known precisely or when the driving current is unknown, the spectra have been normalized to spectral energy irradiance equal to 1 W m-2 nm-1 at the wavelength of maximum spectral irradiance. When the details of the measurement conditions are know, this are given and the data are expressed in absolute spectral irradiance units. In any case, it needs to be taken into account than even in these cases measuremnts have not been done in an optical bench, so values of expectral irradiance are subject to errors due to possible missalignment. The shape of the spectra, in contrast can be relied upon as measurements were done with well calibrated instruments.
Please see the metadata in each spectrum and the help pages
corresponding to each supplier for contact information. The metadate is
stored in attributes and can accessed with functions
getWhatMeasured and
getWhenMeasured. Sone spectra also contain
information on the measurement accessible with
getInstrDesc and
getInstrSettings.
library(photobiology) library(ggspectra) names(leds.mspct) leds.mspct$white cat(getWhatMeasured(leds.mspct$white)) peaks(leds.mspct$white, span = 100) range(leds.mspct$white) stepsize(leds.mspct$white) plot(leds.mspct$white) intersect(led_engin, blue_leds) leds.mspct[intersect(led_engin, blue_leds)]
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