Altana Color-View Manual de usuario descargar pdf (Pagina 59)

color-view™ Spectrophotometer User’s Guide

which reflected highlights or the

images of objects may be seen

as superimposed on the surface

(ASTM E 284, E-12)

Gloss, specular 1) the relative luminous

fractional reflectance of a

specimen at the specular

direction (ASTM E 284, E-12)

2) the ratio of reflected to

incident light, x 100, for

specified apertures of

illumination and reception when

the axis of reception coincides

with the mirror image of the axis

of illumination (ASTM E 284,

E-12)

Hitching Post Standard standard close in color to the

samples being measured. This

standard is used for hitch

calibration of the instrument

Hunter L,a,b Scale a uniform scale devised in 1958

for use in a color difference

meter, based on Hering’s

opponent-color theory of vision

Illuminant a spectral power distribution for

a light which may or may not be

physically realizable as a source

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Altana Color-View Manual de usuario Pagina 59