Leica DM L, Instructions Manual

Page: 21 / 75

22
Lamp change, Transmitted light
12 V 30 W
12 V 100 W
Unplug the connecting cable from the back of
the instrument (1.9) or external power unit.
Open the lamphousing:
30 W version only: Pull off the cover (1b.5)
upwards.
100 W version only: (Lamphousing 105/2 or 107,
not illustrated, like LH 106): Using a coin, open
the cover on the right side of the lamphousing
(37.1) and lift off cover.
The lamp may still be hot!
Pull out lamp.
Attention:
Without removing its protective covering, put
the new lamp into the base as far as the stop
(1a.4; 20.1), making sure it is not at an angle.
Remove protective covering. If there are any
finger marks on the lamp or illumination lens,
wipe them off immediately with a clean cloth!
The lamp does not need readjusting.
Inhomogeneous illumination is possible if the
lamp has been inserted at an angle or if cheap
lamps are used.
Light sources, Incident light
The Leica DM L microscope is fitted for incident
light BF, DF, POL and ICR with a 12 V 100 W halo-
gen lamp. For incident light fluorescence,
mercury and xenon gas discharge lamps are
preferable due to the brighter image (Fig. 20 –
24) obtained.
Lamphousing 106*, 105/2*, 107/2 and 107
Only for 12 V 100 W halogen lamp (centerable in
x and y direction), focusable, aspherical
collector. Without reflector, with grooved
diffusing screen, heat-absorbing filter (Fig. 20
and 37).
Lamphousing 105/2: like LH 106, but without lamp
and collector adjustment.
Lamphousing 106 z
Like lamphousing 106, but with centerable and
focusable reflector and 4- or 6-lens collector
(Fig. 22). Quartz collector on request.
The following lamps, each with their own
special holder (Figs. 23 and 24) are possible:
12 V 100 W halogen lamp, alternating current
50 W Hg ultra high pressure lamp, alternating current
100 W Hg ultra high pressure lamp, direct current,
non-stabilized
100 W Hg ultra high pressure lamp, direct current, stabilized
75 W high pressure xenon lamp, direct current, stabilized
Power units*
Different power units are required for the
various types of lamp. Some of these vary from
country to country, see separate instructions.
Check hour counter!
Attention:
Caution:
!