72
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 106 z, the direct image of the
filament (in halogen lamps) or the arc (in gas dis-
charge lamps) and its reflection are focused sep-
arately and adjusted in relation to one another.
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 106 z 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 100W and Xe 75 W
Mercury Lamps
• The adjustment window shows the direct
image 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 completely
out of the beam path. The arc’s focused
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).
