Skip to contents

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:

Usage

D65.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 2022, CIE standard illuminant D65, International Commission on Illumination (CIE), Vienna, Austria, doi:10.25039/CIE.DS.hjfjmt59 .

Author

CIE

Examples

D65.illuminant.spct
#> Object: source_spct [531 x 2]
#> Wavelength range 300-830 nm, step 1 nm 
#> Label: CIE D65 standard illuminant (DOI: 10.25039/CIE.DS.hjfjmt59), 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  0.000341
#>  2      301  0.00360 
#>  3      302  0.00686 
#>  4      303  0.0101  
#>  5      304  0.0134  
#>  6      305  0.0166  
#>  7      306  0.0199  
#>  8      307  0.0232  
#>  9      308  0.0264  
#> 10      309  0.0297  
#> # ℹ 521 more rows