Analysis of solid samples
Absolute reflectance attachment
SPECORD S600 accessories Edition 09/2014 75
18 Absolute reflectance attachment
With this accessory it is possible to determine the absolute reflectance of
reflecting layers that are homogeneous and bright polished and that have a
constant thickness.
min. sample size 40 x 40 mm
2
max. sample size 70 x 70 mm
2
Reflection angle 7°
Layout
2 Stop bolt for the V-shaped beam path
3 Contact plate for the sample
4 Pivotable mirror
5 Stop bolt for the W-shaped beam path
7 Clamping lever (not in models with fixed
clamps)
8 Frame for pivotable mirror
Fig. 18-1 Absolute reflectance attachment
Functional principle
The reflectance is determined in two steps:
1. Determination of the reference in the V-shaped beam path
2. Measuring the sample in the W-shaped beam path
The measurements are carried out with a reflection angle of 7°.
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