D65: Standard Illuminant D65 (1964)

Description Format Details Source References See Also Examples

Description

D65.1nm standard Illuminant D65, 300 to 830 nm at 1 nm intervals
D65.5nm standard Illuminant D65, 380 to 780 nm at 5 nm intervals

Format

Each is a colorSpec object organized as a vector, with specnames equal to 'D65'.

Details

Both of these have been divided by 100, to make the values at 560nm equal to 1 instead of 100.

Source

http://www.cvrl.org

References

Günther Wyszecki and W.S. Stiles. Color Science : Concepts and Methods, Quantitative Data and Formulae. Second Edition. Wiley-Interscience. 1982. Table I(3.3.4) pp. 754-758

ASTM E 308-01. Standard Practice for Computing the Colors of Objects by Using the CIE System. Table 3. pages 3-4.

See Also

ABC, D50, daylightSpectra , daylight

Examples

1
2
summary( D65.1nm )
white.point = product( D65.1nm, xyz1931.1nm, wave='auto' )

Example output

This is colorSpec.  Version: 0.5-3.  Author: Glenn Davis [aut, cre].  Built: R 3.4.1; ; 2017-09-21 19:34:23 UTC; unix

colorSpec object.   The organization is 'vector'.  Object size is 10768 bytes.
the object describes a source of light, and the quantity is 'power' (power of photons, which is radiometric).
Wavelength range: 300 to 830 nm.  Step size is 1 nm.

1 spectra
531 data points / spectrum

  Source      Min     Max LambdaMax Integral
1    D65 0.000341 1.17812       460  408.522
--------------- metadata: start ------------------

path  =  ../inst/extdata/illuminants/D65.1nm.txt

header  = 
#
#   D65.1nm.txt
#
#   the D65 power at 1nm interval
#
#   the data is from
#   Wyszecki & Stiles
#   Color Science, 2nd edition.
#   Table I(3.3.4)  pp. 754-758.
#
#
--------------- metadata: end ------------------

colorSpec documentation built on April 2, 2018, 5:05 p.m.