Checking Phase Contrast Rings - Leica DM5500 B Manuel D'utilisation

7. Startup
Adjusting the aperture diaphragm
(DM6000 M only)
• Remove one eyepiece.
• Close the aperture diaphragm with the AP
keys (43.2) until the edge of the diaphragm ap-
pears on the exit pupille of the objective (ap-
erture field plane).
• If the image does not appear in the center of
the field of view, the aperture diaphragm has
to be moved with the two centering bolts
(48b.1) on the upper left side of the stand.
• Open the aperture diaphragm so it covers
approx. 2/3 of the field of view.
Fig. 49 Focusing telescope
1 Adjustable eyelens
2 Clamping ring for fixing the focus position
52

7.7 Checking Phase Contrast Rings

If your microscope is equipped for the use of
phase contrast, the light rings that fit the objec-
tives are built into the condenser.
The light rings are already centered in the fac-
tory. However, the centering should be
rechecked.
Every objective is assigned its own light ring in
the condenser disc. Therefore, a check must be
performed for each objective. When swiveling in
a suitable objective for phase contrast, the cor-
responding light ring is set automatically.
• Press the BF (Bright Field) button (one of the
• In the place of an eyepiece, insert the focus-
• Select the phase contrast objective with the
• Focus on the specimen with the SmartMove,
1
2
Note:
variable function keys at the stand, STP6000
or at the Leica SmartTouch).
ing telescope (Fig. 49) into the observation
tube.
lowest magnification (one of the variable
function keys at the stand or at the
SmartMove).
STP6000 or focus wheel.