ZEISS
5 Operation | 5.4 Setting Up for Transmitted Light Techniques
5.4.8.4 Circular Polarization Contrast
For more information about the method, see
Circular Polarization Contrast [
.
1
2
3
4
5
6
1
Reflector turret
2
Lower part of circular polarizer
3
Lever for rotating the lambda/4 plate
4
Lambda/4 plate in the upper part of the
circular polarizer
5
Adjustment slit
6
Lambda/4 compensator (6x20)
Prerequisite
ü
The circular polarizer D including the corresponding lambda/4 plate is installed.
ü
The analyzer module is installed in the reflector turret or
the stand is equipped with the intermediate plate for analyzer slider and the analyzer slider is
available.
ü
The lambda/4 compensator (6x20) is available.
Procedure
1. Remove the sample.
2. Swivel the lower part
2
of the circular polarizer into the light path up to the click stop.
3. Swing in the analyzer module on the reflector turret
1
or insert the analyzer slider into
the intermediate plate.
4. At full light intensity, assess the extinction (darkening) of the field of view without sample.
5. Push the lambda/4 compensator
6
into the compensator slot above the nosepiece as
far as it will go.
6. Swivel the upper part
4
of the circular polarizer into the light path.
7. Rotate the lever of the lambda/4 plate
3
of the D circular polarizer until the field of view
appears dark gray.
à
The lever points 45° to the right.
à
The maximum extinction is obtained.
8. Place the sample on the stage.
à
The samples appear constantly and independently of the stage rotation in their specific
interference color, which depends on the material, sample thickness and orientation.
Instruction Manual ZEISS Axioscope 5, Axioscope 5/7 MAT | en-US | Rev. 13 | 430035-7344-001
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