47
7. Startup
Centering the 12 V 100 W halogen bulb
• In the adjustment window, you see the direct
filament image and the mirror image, which as
a rule are shifted together.
• Focus the direct filament image with the col-
lector (46.6).
• Use the adjusting buttons on the rear side of
the lamp housing (46.2, 46.4) to rotate the mirror
image of the lamp filament to the side or com-
pletely out of the beam path. The lamp fila-
ment’s focused image remains visible (Fig. 47).
• Adjust the direct filament image using the ad-
justing knobs (46.1) and (46.5) so that the cen-
tering surface is halfway covered (Fig. 48).
• Then rotate the mirror image of the lamp fila-
ment using the adjusting knobs (46.2) and
(46.4), and focus it using the reflector (46.3).
• Align the mirror image symmetrically to the fila-
ment image (Fig. 49). To do so, again use the
adjusting knobs (46.2) and (46.4).
• Defocus the image with the collector head
(46.6) until the filament image and mirror im-
age are no longer recognizable and the image
is uniformly illuminated.
• Replace the lamp adjustment reflector with
the original filter cube.
Note:
Make sure to switch off the instrument.
Fig. 47
Direct lamp filament image focused,
but not centered
(in reality, the image is less focused)
Fig. 48
Direct lamp filament image in target position
(in reality, the image is less focused)
Fig. 49
Direct lamp filament image and mirror image in
target position
(in reality, the image is less focused)
