Leica Microsystems DMI3000 B Mode D'emploi page 79

Caution!
Light sources pose a potential irradiation risk
(glare, UV-radiation, IR-radiation).
In the lamp housing 106 z, the direct image of the
fi lament (in halogen lamps) or the arc (in gas dis-
charge lamps) and its refl ection are focused sep-
arately and adjusted in relation to one another.
An adjustment window (2.8, p. 21; 5b.3, S.25) 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.
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 mir-
ror 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 re-
mains 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).
Fig. 100 Lamp housing 106z L
1 Lamp adjustment, vertical
2 Vertical refl ector adjustment
3 Focusing the refl ector image
4 Horizontal refl ector adjustment
5 Lamp adjustment, horizontal
6 Collector focusing
7 Screw
1
7 6 5
7. Start-up
2
3
4
79