Abstract

A system is described whereby just noticeable differences in gloss can be expressed in terms of differences in specular luminance factors. The number of just noticeable gloss differences was determined graphically for paint specimens with specular luminance factors varying from 0.5 to 40.0. For the specification of gloss a system is proposed in which gloss units are equivalent to just noticeable gloss differences.

© 1958 Optical Society of America

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References

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  1. V. G. W. Harrison and R. C. Poulter, Research 7, 128April (1954).
  2. I. Nimeroff, J. Research Natl. Bur. Standards 48, 441 (1952).
    [Crossref]
  3. W. D. Wright, Optica Acta (Paris) 2, 102 (1954).
    [Crossref]
  4. H. K. Hammond and I. Nimeroff, J. Research Natl. Bur. Standards 44, 585 (1950).
    [Crossref]
  5. W. D. Wright, Researches in Normal and Defective Colour Vision (Henry Kimpton, 25, Bloomsbury Way, London, W. C. 1, 1946).
  6. J. MacAdam, J. Opt. Soc. Am. 32, 247 (1942).
    [Crossref]
  7. V. G. W. Harrison, paper delivered at the Eastbourne Conference on “Gloss Measurement,” , 36, 572 (1953).
  8. R. S. Hunter and D. B. Judd, Paint Varnish Production Mgr. 19, 152 (1939).

1954 (2)

V. G. W. Harrison and R. C. Poulter, Research 7, 128April (1954).

W. D. Wright, Optica Acta (Paris) 2, 102 (1954).
[Crossref]

1952 (1)

I. Nimeroff, J. Research Natl. Bur. Standards 48, 441 (1952).
[Crossref]

1950 (1)

H. K. Hammond and I. Nimeroff, J. Research Natl. Bur. Standards 44, 585 (1950).
[Crossref]

1942 (1)

1939 (1)

R. S. Hunter and D. B. Judd, Paint Varnish Production Mgr. 19, 152 (1939).

Hammond, H. K.

H. K. Hammond and I. Nimeroff, J. Research Natl. Bur. Standards 44, 585 (1950).
[Crossref]

Harrison, V. G. W.

V. G. W. Harrison and R. C. Poulter, Research 7, 128April (1954).

V. G. W. Harrison, paper delivered at the Eastbourne Conference on “Gloss Measurement,” , 36, 572 (1953).

Hunter, R. S.

R. S. Hunter and D. B. Judd, Paint Varnish Production Mgr. 19, 152 (1939).

Judd, D. B.

R. S. Hunter and D. B. Judd, Paint Varnish Production Mgr. 19, 152 (1939).

MacAdam, J.

Nimeroff, I.

I. Nimeroff, J. Research Natl. Bur. Standards 48, 441 (1952).
[Crossref]

H. K. Hammond and I. Nimeroff, J. Research Natl. Bur. Standards 44, 585 (1950).
[Crossref]

Poulter, R. C.

V. G. W. Harrison and R. C. Poulter, Research 7, 128April (1954).

Wright, W. D.

W. D. Wright, Optica Acta (Paris) 2, 102 (1954).
[Crossref]

W. D. Wright, Researches in Normal and Defective Colour Vision (Henry Kimpton, 25, Bloomsbury Way, London, W. C. 1, 1946).

J. Opt. Soc. Am. (1)

J. Research Natl. Bur. Standards (2)

I. Nimeroff, J. Research Natl. Bur. Standards 48, 441 (1952).
[Crossref]

H. K. Hammond and I. Nimeroff, J. Research Natl. Bur. Standards 44, 585 (1950).
[Crossref]

Optica Acta (Paris) (1)

W. D. Wright, Optica Acta (Paris) 2, 102 (1954).
[Crossref]

Paint Varnish Production Mgr. (1)

R. S. Hunter and D. B. Judd, Paint Varnish Production Mgr. 19, 152 (1939).

Research (1)

V. G. W. Harrison and R. C. Poulter, Research 7, 128April (1954).

Other (2)

V. G. W. Harrison, paper delivered at the Eastbourne Conference on “Gloss Measurement,” , 36, 572 (1953).

W. D. Wright, Researches in Normal and Defective Colour Vision (Henry Kimpton, 25, Bloomsbury Way, London, W. C. 1, 1946).

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Figures (8)

Fig. 1
Fig. 1

Optical system of the Wright spectrophotometer.

Fig. 2
Fig. 2

Specimen holder and photocell of the spectrophotometer, positioned for reflection measurements.

Fig. 3
Fig. 3

Specular luminance factors of a series of white paint specimens plotted against the means of histograms with the rank numbers used as abscissa to give a visual gloss scale.

Fig. 4
Fig. 4

Specular luminance factors plotted against just noticeable gloss steps expressed in terms of differences in specular luminance factor.

Fig. 5
Fig. 5

Part CD of the curve in Fig. 4 plotted on a larger scale.

Fig. 6
Fig. 6

Specular luminance factors of specimens of similar contrast gloss plotted against normal luminance factor.

Fig. 7
Fig. 7

Curves of constant contrast gloss.

Fig. 8
Fig. 8

Curve of constant specular gloss drawn through points representing white, black, and two grey specimens.

Tables (2)

Tables Icon

Table I Luminance factors of white paint specimens (45° illumination).

Tables Icon

Table II Visual observations by 10 observers on a series of white paint specimens.