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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.

Usage

A.illuminant.spct

Format

A source spectrum with 531 rows and 2 variables.

  • w.length (nm)

  • s.e.irrad (rel. units)

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 .

Author

CIE

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