Zeiss Axio Imager - Page 147

OPERATION
Axio Imager Illumination and contrast methods Carl Zeiss
M70-2-0020 e 06/2009 430000-7344-001 147
Specimen field size and objective aperture change after every objective change as possibly does
the centering slightly. Therefore, repeat the adjustment of 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 its opening being reduced by a certain
range. Closing it too much should be avoided in order not to worsen the evenness of the field
of view illumination.
(4) Setting the height stop on the
condenser
• Loosen the fastening screw of the height stop
(
4-115/2) using an SW 3 ball-headed
screwdriver.
• Use focusing drive to focus on the specimen.
• Close luminous-field diaphragm and focus it by
turning the vertical control (
4-115/3) of the
condenser.
• Carefully raise the condenser slightly without
lifting the specimen.
• Tighten fastening screw (4-115/2) of height
stop.
Fig. 4-115 Setting the height stop on the
condenser carrier