Halma Ocean Optics QE65000, Инструкция по установке и эксплуатации

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4: Sample Experiments
Where:
S
λ
= the sample intensity at wavelength
λ
D
λ
= the dark intensity at wavelength
λ
R
λ
= the reference intensity at wavelength
λ
The following figure shows a typical reflection setup. A light source sends light via the input leg of a
reflection probe onto a sample. A reflection probe holder holds the probe in either a 90 or 45-degree angle
from the surface. The output leg of the reflection probe carries light from the sample to the spectrometer,
which is connected to the PC.
Typical Reflection Setup
Common reflection applications include measuring the properties of mirrors and coatings. Other
applications include measuring the visual properties of the color in paints, plastics, and food products.
►
Procedure
Perform the following steps to take reflection measurements using OOIBase32:
1. Place OOIBase32 is in Scope mode by clicking the Scope Mode icon on the toolbar, or by
selecting Spectrum | Scope Mode from the menu bar.
2. Ensure that the entire signal is on scale. The intensity of the reference signal should peak at about
50,000 counts.
3. Take a reference spectrum with the WS-1 Diffuse Reflectance Standard or the STAN-SSH High-
reflectivity Reference Standard. You must take a reference spectrum before measuring reflection.
Click the Store Reference spectrum icon on the toolbar or select Spectrum | Store Reference
from the menu bar to store the reference. This command merely stores a reference spectrum in
memory. You must select
File | Save | Reference from the menu bar to permanently save the
spectrum to disk.
4. Block the light path to the spectrometer. Then, take a dark spectrum by clicking the Store Dark
Spectrum icon on the toolbar or by selecting Spectrum | Store Dark from the menu bar. This
command merely stores a dark spectrum in memory. You must select File | Save | Dark from the
menu to permanently save the spectrum to disk.
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