Zeiss N HBO 103 Especificaciones descargar pdf (Pagina 102)

OPERATION Axioskop 40

Carl Zeiss Illumination and contrast procedures Axioskop 40 FL

3-28 B 40-810 e 12/01

• Replace eyepiece in the tube.

• If the height of the dark field condenser has

been set correctly enough, any visible

brightening in the field of view can be reduced,

and the luminous-field diaphragm image will be

almost perfectly in focus.

• Finally, match the diameter of the luminous-

field diaphragm to the size of the field of view.

☞

Dark field microscopy requires specimens to be considerably cleaner than in other techniques.

Fingerprints, 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.

Fig. 3-23 Centering dark field stop on the

universal condenser

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Zeiss N HBO 103 Especificaciones Pagina 102