OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 58, Iss. 11 — Nov. 1, 1968
  • pp: 1528–1535

Computation of Correlated Color Temperature and Distribution Temperature

A. R. ROBERTSON  »View Author Affiliations

JOSA, Vol. 58, Issue 11, pp. 1528-1535 (1968)

View Full Text Article

Acrobat PDF (892 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Methods by which the correlated color temperature and the distribution temperature of a light source may be calculated from a knowledge of the spectral power distribution of the source are described. Digital-computer programs have been written to perform the calculations; these programs are described, with the results of some tests for a number of sources. The two temperatures are significantly different for some sources. A new concept, “daylight distribution temperature” is also introduced and some examples are given.

A. R. ROBERTSON, "Computation of Correlated Color Temperature and Distribution Temperature," J. Opt. Soc. Am. 58, 1528-1535 (1968)

Sort:  Author  |  Journal  |  Reset


  1. The definition given in the current (May 1968) draft of the 3rd edition of the International Lighting Vocabulary is: "Temperature of the full radiator for which the ordinates of the spectral distribution curve of its radiance are proportional (or approximately so), in the visible region, to those of the distribution curve of the radiation considered. Note: Both radiations will necessarily have the same, or nearly the same chromaticity."
  2. K. L. Kelly, J. Opt. Soc. Am. 53, 999 (1963).
  3. L. Mori, H. Sugiyama, and N. Kambe, Acta Chromatica 1, 93 (1964).
  4. I. G. Priest, J. Opt. Soc. Am. 23, 41 (1933); D. B. Judd, 23, 7 (1933).
  5. D. Hahn and H. Hieke, Farbe 9, 247 (1960).
  6. C. L. Sanders and W. Gaw, Appl. Opt. 6, 1639 (1967).
  7. G. Wyszecki and W. S. Stiles, Color Science (John Wiley & Sons, Inc., New York, 1967).
  8. D. Nickerson and C. W. Jerome, Illum. Eng. 60, 262 (1965).
  9. Commission Internationale de 1'Eclairage, Compt. Rend. 1967 [H. K. Hammond, Secy., Natl. Bur. Std. (U.S.) Washington, D. C., 1968]. Report of Committee E-1.3.1 (Colorimetry).
  10. D. B. Judd, D. L. MacAdam, and G. Wyszecki, J. Opt. Soc. Am. 54, 1031 (1964).
  11. G. Wyszecki, J. Opt. Soc. Am. 58, 290 (1968).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited