Nikon DIAPHOT 300 - Handling Condenser Flolder

16. Handling Condenser Holder
1) Condenser refocusing stopper (Applicable to the LWD condenser only.)
The condenser refocusing stopper is used to mark the position of the condenser
where the image of the field aperture diaphragm is in focus on the specimen
surface. This stopper works in the range 1 3mm above and 3mm below the
stage top surface.
The condenser refocusing stopper is very useful since it allows the condenser to
be easily returned to the previous position even if it has moved up for specimen
replacement. Use this stopper when the incubator (option) is used or when the
pillar cannot be tilted.
Usage: Clamp the condenser refocusing stopper at the position where the image
of the field aperture diaphragm is focused on the specimen surface.
Then, if the condenser is moved up temporarily for specimen
replacement, just lower it to the limit. The condenser is back at the
focus position where it was.
2) Rotating the condenser mount
The condenser mount can be rotated by loosening the rotation clamp screw.
Rotate the condenser mount for differential interference microscopy or when
adjusting the turret orientation.
If the system condenser turret unit is used, and the condenser holder is not fitted
with a polarizer (in bright-field or phase contrast microscopy), the turret may be
turned to the right or left and fixed using this function. The free space created
this way may be available for mounting a manipulator, etc. (See page 44.)
3) Removing the condenser holder
The condenser holder may be removed from the diascopic illumination unit.
(See page 45.)
Remove the condenser holder to observe a specimen in a large container or
when using the SLWD condenser.
35
Figure 4-1 5