Zeiss Axio Observer 3 - Page 20

ZEISS HOW TO GET TO THE FIRST PICTURE Axio Observer
18 431004-6044-008 09/2017
English
• Close the luminous-field diaphragm (Fig. 5/7)
until it is visible in the field of view (not
necessarily in focus) (Fig. 4/A).
• Bring the edge of the luminous-field diaphragm
into focus (Fig. 4/B) by adjusting the height of
the condenser (Fig. 5/8).
• Center (Fig. 4/C) the luminous-field diaphragm
using the centering screws (Fig. 5/4) and open
until the edge of the diaphragm just disappears
from the field of view (Fig. 4/D).
• To set the aperture diaphragm, remove one eyepiece from the eyepiece tube and adjust the aperture
diaphragm to approximately 2/3 the diameter of the exit pupil of the eyepiece (
Fig. 4/E).
The settings required for optimum contrast depend on the specimen.
• Reinsert the eyepiece and where necessary refocus on the specimen using the fine focusing drive.
• Adjust the light intensity using the rocker switch.
Key to Fig. 5:
1 On / off switch (3, 3 materials stand), standby button (5, 5 materials stand and 7, 7 materials stand)
2 Sideport selector wheel
3 Condenser turret disk
4 Condenser centering screw
5 Polarizer D with 2-position filter changer
6 Condenser
7 Luminous-field diaphragm knurled wheel
8 Vertical adjustment knob for condenser
9 Slot for iris diaphragm slider and FL attenuator, discrete
10 Microscope stage (with inserted universal mounting frame K)
11 LM-Set button
12 Analyzer slider slot
13 Nosepiece
14 Compensator mount 6x20 (only for materials stands)
15 Reflector turret or dual filter wheel mot.
16 Optovar turret selector wheel
17 Coarse / fine focus drive
18 TL button for switching the LED / halogen illuminator or the reflected light shutter (fluorescence) on and off
19 Control wheel for LED light / halogen illuminator intensity control
20 Rotary / sliding button for vis / doc beam splitting
21 Rotary / sliding button for Bertrand lens and manual shutter
22 Binocular section of the tube
23 Eyepiece
24 Eyepiece focusing ring
Fig. 4 Diaphragm settings in transmitted
light brightfield acc. to KÖHLER