Axio Imager 2 OPERATION ZEISS
Illumination and contrast methods
01/2016 430000-7544-001 163
The specimen field size and objective aperture change after every objective change. The
centering may also alter slightly. Therefore, readjust the luminous-field diaphragm and aperture
diaphragm to obtain optimum results.
For < 10x objectives, the front lens of the universal condenser (if used) must be folded out and
the aperture diaphragm fully opened. In the case of such large fields, the luminous-field
diaphragm can also be used for better contrasting by reducing its opening to a certain range.
Avoid closing it too far, otherwise this will impair the evenness of the field of view illumination.
(4) Setting the height stop on the
condenser carrier
• Loosen the fastening screw of the height stop
(Fig. 192/2) using an SW 3 ball-headed
screwdriver.
• Use the focusing drive to bring the specimen
into sharp focus.
• Close the luminous-field diaphragm and focus it
by turning the vertical control (Fig. 192/3) of the
condenser.
• Carefully raise the condenser slightly without
lifting the specimen.
• Tighten fastening screw (Fig. 192/2) of the
height stop.
Fig. 192 Setting the height stop on the
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