A dataset containing wavelengths at a 5 nm interval (300 nm to 830 nm) and the corresponding spectral energy irradiance normalized to 1 at 560 nm. Spectrum approximates the midday solar spectrum at middle latitude as 'corresponds' to the white point of a black body a 6504 K. Original data from CIE downloaded on 2024-11-30 The variables are as follows:
Note
This and other CIE illuminant spectra can be downloaded from https://cie.co.at/data-tables as .CSV files.
References
CIE 2022, Relative spectral power distributions of CIE standard illuminants A, D65 and D50 (wavelengths in standard air) (data table), International Commission on Illumination (CIE), Vienna, Austria, doi:10.25039/CIE.DS.etgmuqt5 .
See also
Other Spectral data examples:
A.illuminant.spct,
D65.illuminant.spct,
Ler_leaf.spct,
black_body.spct,
ccd.spct,
clear.spct,
filter_cps.mspct,
green_leaf.spct,
phenylalanine.spct,
photodiode.spct,
sun.spct,
sun_daily.spct,
sun_evening.spct,
two_filters.spct,
water.spct,
white_led.source_spct
Examples
D50.illuminant.spct
#> Object: source_spct [531 x 2]
#> Wavelength range 300-830 nm, step 1 nm
#> Label: CIE D50 standard illuminant (DOI: 10.25039/CIE.DS.etgmuqt5), normalized to one at 560 nm.
#> Spectral data in s.e.irrad normalized to 1 at 560 nm (wavelength)
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [normalized]
#> --
#> # A tibble: 531 × 2
#> w.length s.e.irrad
#> <int> <dbl>
#> 1 300 0.000192
#> 2 301 0.00222
#> 3 302 0.00425
#> 4 303 0.00629
#> 5 304 0.00832
#> 6 305 0.0103
#> 7 306 0.0124
#> 8 307 0.0144
#> 9 308 0.0164
#> 10 309 0.0185
#> # ℹ 521 more rows