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Bruker Optik GmbH HYPERION User Manual
Overview 3
3.7.2 Installation locations of the apertures
Figure 3.10: Apertures and their location in the microscope
A
B
C
E
F
D
Fig. 3.10 Aperture and explanation
A Pinhole aperture: is used for checking the condenser adjustment (in transmitted
light microscopy)
☞ See section 4.6.
B Iris aperture for setting the Koehler illumination in transmission: This aperture
is opened and closed by a knurled ring which is located below the condenser.
➣ Attention: This aperture is in the IR-beam path. For this reason, do not forget
to open the aperture completely before starting a spectroscopic measurement!
C Installation location for an additional aperture for measurements in reflection:
used for narrowing down the sample area to be analyzed, i.e. sample areas which
are not intended for spectroscopic analysis are masked off by the aperture knife
edges.
Note: It is a confocal aperture which is located in the beam path before the sample.
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