4 Adjusting the Condenser Settings |
4.3 Adjusting the Köhler Illumination
Primotech | Document 430055-9044-008 V.1.0; 03 / 2014
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4.3 Adjusting the Köhler Illumination
The condenser with Köhler illumination ensures a uniform illumination of the
sample during transmitted light analyses. You can adjust the contrast of the
illumination according to your preferences. The following is only a guide, the exact
settings depend on your preferences.
Prerequisites
¢
The area of the sample in the field of view has high contrast
¢
The illumination brightness is low
¢
The upper limit of the condenser has been set to prevent collision with the
sample
Procedure
1
Select the lowest magnification and bring the area of interest into focus.
2
Open the luminous field diaphragm and the aperture diaphragm fully.
3
Raise the condenser to its maximum vertical position.
!
4
Close the luminous field diaphragm until the bright area is half the size of the
field of view.