Zeiss Axiolab A Spécifications télécharger pdf (Page 81)

OPERATION

Axio Lab.A1 Lighting and contrasting method in transmitted light Carl Zeiss

04/2013 430037-7144-001 81

4.1.4.3 Determining the direction of oscillation n

(1) Application

The determination of the direction of oscillation of nJ and nJ

(direction of oscillation with the absolutely

or relatively highest refractive index) and n

and n

(direction of oscillation with the absolutely or

relatively lowest refractive index) in relation to the morphological directions, e.g. of crystal surfaces,

crystal needles or fibers, provides an important criterion for recognition. It is also employed for the

diagnosis of biocrystals (e.g. gout, pseudogout).

Fig. 4-7 Determining the direction of oscillation n

’

using a synthetic fiber as an example

(2) Instrumentation

 Eyepiece with crossline reticle

 Tension-free objectives

 Rotary stage Pol (Fig. 4-5/1)

 Polarizer D (rotatable or fixed)

 Screw-in fixed analyzer slide D or lambda/lambda4 compensator combined with analyzer (in

Axio Lab.A1 tubes)

 Alignment specimen for polarization microscope (453679-0000-000)

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Zeiss Axiolab A Spécifications Page 81