3 Operation of Each Part
23
IC Inspection Microscope ECLIPSE L200ND / L200N Instructions
3.11.2 Placing/removing the polarizer in/from the optical path
Push in:
The polarizer is in
the optical path.
Polarizer slider
Figure-26 Episcopic polarizer
• Placing the polarizer in the optical path
Push in the slider to the second click-stop position to place the polarizer in the optical
path.
Adjust the orientation of the polarizer before using the polarizer slider for the first time.
(See “3.11.3 Adjusting the orientation of the polarizer”.)
• Removing the polarizer from the optical path
Pull out the slider to the first click-stop position to remove the polarizer from the optical
path. (The empty hole is now placed in the optical path.)
3.11.3 Adjusting the orientation of the polarizer
Turning the orientation adjustment screw at the bottom of the slider changes the orientation
of the polarizer. Given below is how to rotate the polarizer for the precise crossed Nicols
adjustment.
Place the polarizer and the analyzer in the optical path. Place a sample with flat and plane
surface on the stage and set each part of the microscope for the episcopic simplified
polarization microscopy.
Remove one eyepiece from the microscope and look inside the open sleeve. You can see
the objective's exit pupil as a bright circle. Turn the orientation adjustment screw in either
direction until the dark cross appears in the field. This is the crossed Nicols position.
Figure-27 Dark cross
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