Leica DMi8 - Page 81

5. OPERATION - TRANSMIT TED LIGHT CONTR AST ME THOD
Setting the IMC slit diaphragms:
For a tiltable Transmitted Light arm:
t0OUIFDPOEFOTFSTFMFDUUIFDPSSFTQPOEJOHTMJUJMMVNJ-
nation for the current magnification.
t4XJOHUIFpolarizer on the condenser into the beam
path.
Note:
The position of the polarizer influences the appearance of
the relief. The best relief images are obtained in the extinc-
tion position; the relief disappears at a 90° position.
For a fixed Transmitted Light arm:
t*GOFDFTTBSZSFNPWFUIF
Phase Contrast slider in the
Transmitted Light
arm.
t)PMEUIF*.$TMJEFTPUIBUUIFNBSLJOH501-&'5JTBU
the top left and the rest of the marking faces forwards.
The click stops are on the front longitudinal side of the
slide.
(Depending on whether the S40/0.45 or S80/0.30 con-
denser is used, various IMC slit diaphragm sliders ex-
ist).
t*OTFSUUIFEJBQISBHNTMJEFGSPNUIFSJHIUJOUPUIF
Transmitted Light arm.
t&OHBHFUIFTMJEFJOUIF*.$QPTJUJPO5IFSPVOEPQFO-
ing is the Brightfield position.
Note:
The IMC slit diaphragm slider is encoded. As soon as
the slider is taken out of the Brightfield position (avail-
able opening) and engaged in the IMC position, the
brightness increases. Conversely, switching from IMC
to Brightfield decreases the brightness.
tTo adjust the slit width, adjust the slider of the IMC slit
diaphragm slider to the position allocated on the ob-
jective, e.g. to the 10x marking for the 10x objective.
1 "TOP LEFT" marking on the diaphragm slide
2 Click stops
3 IMC slit diaphragm slider for S80/0.30
4 IMC slit diaphragm slider for S40/0.45
5 Adjusting screw on the IMC slit diaphragm slider
1
1
2
5
5
2
2
2
3
4
IMC slit diaphragm slider
Condenser setting for tiltable Transmitted Light arm - con-
figuring slit diaphragm
Swinging in polarizer
79