Abstract

SUMMARY

It is proposed to measure the specular-reflection from various materials and to determine objective gloss which defines surface characteristics only. Samples are mounted on a circular cylinder which is spun rapidly. Large angles of incidence are employed. The brightness of the image of a source reflected specularly from the cylindrical sample is photometered by means of an optical pyrometer. Actual results show that gloss so measured is independent of the brightness of the back-ground (diffuse reflection).

© 1930 Optical Society of America

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References

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  1. L. A. Jones, J.O.S.A., & R.S.I.,  6, p. 147; 1922.
    [CrossRef]

1922 (1)

L. A. Jones, J.O.S.A., & R.S.I.,  6, p. 147; 1922.
[CrossRef]

Jones, L. A.

L. A. Jones, J.O.S.A., & R.S.I.,  6, p. 147; 1922.
[CrossRef]

J.O.S.A., & R.S.I. (1)

L. A. Jones, J.O.S.A., & R.S.I.,  6, p. 147; 1922.
[CrossRef]

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Figures (1)

Fig. 1
Fig. 1

Sketch of gloss-meter.