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 AmericaFull Article | PDF Article
L. A. Jones
J. Opt. Soc. Am. 6(2) 140-161 (1922)
John M. Slater
J. Opt. Soc. Am. 25(7) 218-223 (1935)
Richard S. Hunter
J. Opt. Soc. Am. 26(4) 190-196 (1936)