5 Operation | 5.4 Setting Up for Transmitted Light Techniques
ZEISS
5.4.8.5.3 Conoscopy with Intermediate Plate and Bertrand Lens Slider
Prerequisite
ü
Strain-free objectives are installed in the
.
EC Plan-Neofluar 40x/0.9 Pol objective or EC Plan-Neofluar 100x/1.30 Oil Pol objective or EC
Epiplan-Neofluar 50x/0.8 Pol objective or EC Epiplan-Neofluar 100x/0.9 Pol objective
ü
ü
Pol binocular photo tube is installed or eyepiece with crossline micrometer 14:140 and adjust-
ment aid for polarization microscopy are available.
ü
The achromatic-aplanatic 0.9 H Pol condenser or 0.9 Pol condenser is installed.
ü
Bertrand lens slider inserted in the intermediate plate.
ü
The D polarizer (rotatable or fixed) is installed.
ü
The D Pol analyzer module in the reflector turret or reflector slider are available.
ü
The microscope is adjusted for
transmitted light brightfield microscopy [
.
Procedure
1. Place the sample on the stage.
2. Focus the sample.
3. Swivel the polarizer.
4. Swivel the D Pol analyzer module into the light path.
5. If you do not use the Pol binocular photo tube, carry out the following two steps:
− Align the crossline micrometer 14:140 or the eyepiece reticle to the vibration direction of
the polarizer using the
.
− Remove the Pol adjustment aid.
6. Move a selected crystal to the center of the reticle.
7. Swivel in the front lens on the condenser, if necessary.
8. Swivel the recommended objective into the light path.
9. Focus the sample.
10. Close the luminous-field diaphragm as much as is necessary to prevent the axial figure from
being superimposed by the axial figures of adjacent crystals.
à
The smallest crystal extension that can be masked out is 4 μm.
11. Push the Bertrand lens slider incorporated in the intermediate plate into its active position.
à
The axial figure appears in the field of view.
12. Focus the axial figure by shifting the lever of the Bertrand lens slider.
104
Instruction Manual ZEISS Axioscope 5, Axioscope 5/7 MAT | en-US | Rev. 13 | 430035-7344-001