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7. Start-up
Caution!
Never look directly into the beam path!
Beware of the glare hazard when switching
to reflector BF or Smith!
Caution!
Light sources pose a potential irradiation
risk (glare, UV-radiation, IR-radiation).
In the lamp housing 106z, the direct image of the
filament (in halogen lamps) or the arc (in gas
discharge lamps) and its reflection are focused
separately and adjusted in relation to one an-
other.
An adjustment window (2.8, p. 19) in which the
light source is visible is located on the right side
of the microscope.
Adjust the lamp as follows while observing the
light source in the adjustment window.
6
2
3
4
7
1
5
Fig. 100 Lamp housing 106z L
1 Lamp adjustment, vertical
2 Vertical reflector adjustment
3 Focusing the reflector image
4 Horizontal reflector adjustment
5 Lamp adjustment, horizontal
6 Collector focusing
7 Screw
Centering the Hg 100 W and Xe 75 W
mercury lamps
• The adjustment window shows the direct im-
age of the arc and its mirror image. These are
generally not in alignment with one another.
• Focus the direct image with the collector
(100.6).
• Use the adjusting buttons to pivot the arc’s
mirror image on the rear side of the lamp
housing (100.2, 100.4) to the side or com-
pletely out of the beam path. The arc’s fo-
cused image remains visible (Fig. 101).
• Use the adjusting buttons (100.1 and 100.5) to
place the direct arc image in the middle of the
centering plane, whereby the bright tip of the
arc, the focal spot, should lie slightly outside
the center (Fig. 102).