Leica Microsystems DMI3000 B Mode D'emploi page 80

7. Start-up
• Then pivot the arc's mirror image with the ad-
justing knobs (100.2) and (100.4) and focus it
using the refl ector (100.3).
• Use the adjusting knobs (100.2) and (100.4) to
orient the mirror image symmetrically to the di-
rect image (Fig. 103).
The V-shaped irradiation of the direct image
and mirror image arcs can be superimposed.
Caution!
The bright tips of the arcs, the focal spots,
must never be projected onto each other, as
this results in a danger of explosion by over-
heating.
Caution!
The structure of the arc can no longer be
made out clearly in lamps that have been in
service for a long time. The image and mirror
image can no longer be superimposed exact-
ly. In this case, align both images.
• Using the collector, defocus the image with the
knob (100.6) until the arc image and mirror im-
age are no longer recognizable and the image
is homogeneously illuminated.
• Replace the lamp adjustment refl ector with the
original fi lter cube.
80
Fig. 101 Direct arc image focused but not centered
(in reality, the image is less focused)
Fig. 102 Direct arc image in target position
(in reality, the image is less focused)
Fig. 103 Direct arc image and mirror image in target
position (in reality, the image is less focused)