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 typical, domestic, tungsten-filament lighting and 'corresponds' to a black body a 2856 K. CIE standard illuminant A is intended to represent typical, domestic, tungsten-filament lighting. Original data from CIE downloaded on 2024-11-30.
Note
This and other CIE illuminant spectra can be downloaded from https://cie.co.at/data-tables as .CSV files.
References
CIE 2018, CIE standard illuminant A - 1 nm, International Commission on Illumination (CIE), Vienna, Austria, doi:10.25039/CIE.DS.8jsxjrsn .
See also
Other Spectral data examples:
D50.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
A.illuminant.spct
#> Object: source_spct [531 x 2]
#> Wavelength range 300-830 nm, step 1 nm
#> Label: CIE A standard illuminant (DOI: 10.25039/CIE.DS.8jsxjrsn), normalized to one at 560 nm.
#> Spectral data normalized to s.e.irrad = 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 0.00930
#> 2 301 0.00968
#> 3 302 0.0101
#> 4 303 0.0105
#> 5 304 0.0109
#> 6 305 0.0113
#> 7 306 0.0117
#> 8 307 0.0122
#> 9 308 0.0126
#> 10 309 0.0131
#> # ℹ 521 more rows