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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 28, Iss. 5 — May. 1, 1938
  • pp: 133–139

Optics InfoBase > JOSA > Volume 28 > Issue 5 > The Minimum Perceptible Colorimetric Purity as a Function of Dominant Wave-Length

The Minimum Perceptible Colorimetric Purity as a Function of Dominant Wave-Length

IRWIN G. PRIEST and F. G. BRICKWEDDE  »View Author Affiliations


JOSA, Vol. 28, Issue 5, pp. 133-139 (1938)
http://dx.doi.org/10.1364/JOSA.28.000133


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Abstract

A 4° square, two-part photometric field, symmetrical about a vertical division and viewed through a pupil 3 mm in diameter, is illuminated in both parts by artificial sunlight at a constant brightness of about 3 or 4 millilamberts (retinal illumination, 70 to 90 photons) with a surrounding field of about 0.5 millilambert. Homogeneous light is added to one-half, and sunlight simultaneously subtracted so that the field remains matched in brightness. Two adjustments of the mixture are made: (1) the least purity perceptible with certainty (pmax,), and (2) the greatest imperceptible purity (pmin).The purity of these mixtures is then measured, increased accuracy being obtained by measuring a known large multiple of the homogeneous brightness. Values of pmax and pmin have been obtained as a function of the wave-length of the homogeneous component; these values are reported in detail, and some discussion of their interpretation is given.

Citation
IRWIN G. PRIEST and F. G. BRICKWEDDE, "The Minimum Perceptible Colorimetric Purity as a Function of Dominant Wave-Length," J. Opt. Soc. Am. 28, 133-139 (1938)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-28-5-133


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References

  1. Irwin G. Priest, "The Spectral Distribution of Energy Required to Evoke the Gray Sensation," Nat. Bur. Stand. Sci. Pap. 17, 231 (1922); S417. See Appendix, p. 260.
  2. For a definition of calorimetric purity see Irwin G. Priest, "Apparatus for the Determination of Color in Terms of Dominant Wave-Length, Purity and Brightness," J. Opt. Soc. Am. and Rev. Sci. Inst. 8, 173 (1924); Irwin G. Priest, "The Computation of Colorimetric Purity," J. Opt. Soc. Am. and Rev. Sci. Inst. 9, 503 (1924).
  3. R. Davis, "A Correlated Color Temperature for Illuminants," Nat. Bur. Stand. J. Research 7, 659 (1931) RP365.
  4. Irwin G. Priest, "A Precision Method for Producing Artificial Daylight," Phys. Rev. 11, 502 (1918); J. Opt. Soc. Am. and Rev. Sci. Inst. 12, 479 (1926). D. B. Judd, "Reduction of Data on Mixture of Color Stimuli," Nat. Bur. Stand. J. Research 4, 525 (1930) RP163.
  5. Irwin G. Priest, "Apparatus for the Determination of Color in Terms of Dominant Wave-Length, Purity and Brightness," J. Opt. Soc. Am. and Rev. Sci. Inst. 8, 173 (1924).
  6. D. B. Judd, "Sensibility to Color-Temperature Change as a Function of Temperature," J. Opt. Soc. Am. 23, 7 (1933).
  7. K. S. Gibson and E. P. T. Tyndall, "The Visibility of Radiant Energy," Nat. Bur. Stand.Sci. Pap. 19, 131(1923-24) S475. Proceedings International Commission on Illumination, 6th Meeting, Geneva (University Press, Cambridge, England, 1926), pp. 67, 232.
  8. See, for example, D. B. Judd, "Precision of Color Temperature Measurements under Various Observing Conditions; a New Color Comparator for Incandescent Lamps," Nat. Bur. Stand. J. Research 5, 1164 (1930); RP252.
  9. L. A. Jones and E. M. Lowry, "Retinal Sensibility to Saturation Differences," J. Opt. Soc. Am. and Rev. Sci. Inst. 13, 25 (1926).
  10. D. McL. Purdy, "On the Saturations and Chromatic Thresholds of the Spectral Colours," Brit. J. Psych. (Gen. Sec.) 21, 283 (1931).
  11. L. C. Martin, F. L. Warburton and W. J. Morgan, "Determination of the Sensitiveness ofthe Eye to Differences in the Saturation of Colours," Medical Research Council, Reports of the Committee upon the Physiology Vision, XIII, Special Report Series, No. 188, London, 1933.
  12. W. D. Wright and F. H. G. Pitt, "The Saturation- Discrimination of Two Trichromats," Proc. Phys. Soc. 49, 329 (1937).
  13. Martin, Warburton and Morgan (see reference 11) give a discussion of possible sources of unreliability of the Jones-Lowry data. See, also, D. B. Judd, "Chromaticity Sensibility to Stimulus Differences," J. Opt. Soc. Am. 22, 95 (1932).
  14. Selig Hecht, "The Development of Thomas Young’s Theory of Color Vision," J. Opt. Soc. Am. 20, 231 (1930). The tentative theoretical curves in this paper do not completely harmonize mixture data for the normal eye with the Priest-Brickwedde data; consult D. B. Judd, The Mixture Data Embodied in the Tentative Curves Hecht’s Theory of Vision," J. Opt. Soc. Am. 20, 647 (1930); this deviation has been taken care of in Hecht's subsequent formulation of Young’s idea.
  15. Selig Hecht, "The Interrelation of Various Aspects, Color Vision," J. Opt. Soc. Am. 21, 615 (1931); "A Quantitative Formulation of Colour-Vision," Report of a Joint Discussion of Vision, The Physical and Optical Societies, June 1932; "The Retinal Processes Concerned with Visual Acuity and Color Vision," Bulletin No. 4, Howe Laboratory of Ophthalmology, Harvard Medical School, Harvard University Press, Cambridge, August 1931.
  16. D. B. Judd, "Chromaticity Sensibility to Stimulus Differences" J. Opt. Soc. Am. 22, 72 (1932).
  17. D. B. Judd, "A Maxwell Triangle Yielding Uniform Chromaticity Scales," Nat. Bur. Stand. J. Research 41 (1935) RP756; also J. Opt. Soc. Am. 25, 24 (1935).
  18. See, for example, J. F. Schouten, "Grundlagen einer quantitativen Vierfarbentheorie. I," Proc. Koninklijke Akad. v. Wetenschappen, Amsterdam, 38, No. 6 (1935). Schouten, like Hecht, has shown an approximate correspondence between mixture data for the normal eye and the Priest-Brickwedde data by resort to a certain form visual theory.
  19. I. G. Priest and F. G. Brickwedde, "The Minimum Perceptible Colorimetric Purity as a Function of Dominant Wave-Length with Sunlight as Neutral Standard," Opt. Soc. Am. and Rev. Sci. Inst. 13, 306 (1926).
  20. D. B. Judd, "A Method for Determining Whiteness of Paper," Paper Trade J., Tech. Sec. 100, 266 (1935); 103, 154 (1936); also Tech. Assoc. Papers, Series 18, 392 (1935); Series 19, 359 (1936). H. J. McNicholas, "Color and Spectral Transmittance of Vegetable Oils," Nat. Bur. Stand. J. Research 15, 99 (1935) RP815; also Oil and Soap 12, 167 (1935). D. B. Judd, "Estimation of Chromaticity Differences and Nearest Color Temperature on the Standard 1931 ICI Colorimetric Coordinate System," Nat. Bur. Stand. J. Research 17, 771 (1936) RP944; also J. Opt. Soc. Soc. Am. 26, 421 (1936). H. J. McNicholas, "Selection of Colors for Signal Lights," Nat. Bur. Stand. J. Research 17, 955 (1936) RP956. D. B. Judd, "Surface Color," J. Opt. Soc. Am. 25, 44 (1935). F. C. Breckenridge and W. R. Schaub, "Rectangular Uniform-Chromaticity- Scale Coordinates," J. Opt. Soc. Am. 27, 226 (1937). D. L. MacAdam, "Projective Transformations of I.C.I. Color Specifications," J. Opt. Soc. Am. 27, 294 (1937).

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