Zeiss Axioskop 2 plus Operating Manual page 96

Carl Zeiss
Fig. 3-19 Centering of darkfield stop on the
universal condenser
☞
Darkfield microscopy requires specimens to be considerably cleaner than in other techniques.
Finger prints, dirt or dust particles in particular have negative effects, since they brighten the
background of the field of view and decrease the contrast of the object image.
3-28
OPERATION
Illumination and contrasting techniques
• Insert eyepiece in the tube again.
• If the height of the dark field condenser has
• Finally, match the diameter of the luminous-
been set correctly and sensibly enough, any
visible brightening in the field of view can be
reduced, and the luminous-field diaphragm
image will be almost perfectly in focus.
field diaphragm to the size of the field of view.
Axioskop 2 plus
Axioskop 2 mot plus
B 40-075 e 02/01