ALTANA Micro-Haze Plus - Manual (Page 37)

36
Fig. 17: Gloss measurement
Measuring Haze
Haze surfaces show diffusely
scattered light in the range of 1– 3°
adjacent to the main reflection
(fig. 18).
Fig. 18: Haze measurement
Haze can only be seen on the
gloss surfaces. Therefore, the 20°
geometry is used. The 20°
reflectometer detects an aperture
angle of 1.8°. For measuring haze
two additional detectors having an
aperture of 1.8° each and
measuring the intensity of the
scattered light are disposed
adjacent to the reflectometer
aperture.
10 Measuring Principles