9
2.3
Microscope objective
The microscope objective is a standard DIN type objective with 160 mm conjugate image
distance. To replace the objective, remove the camera module and unscrew the objective. The
SVM340 supports objectives with magnifications from 4× to 20×. Objectives with higher
magnification generally have insufficient stand-
off distance to clear the illuminator LED’s and
can only be used with an external illuminator module or other external light source.
WARNING
: Dust particles can enter the optics module when the objective is not installed.
Removal or changing of the objective should be done in a clean environment when possible.
Cover the objective opening (i.e. with a piece of tape) if the optics module will be stored
without the objective installed.
2.4
Fluorescence filter
The fluorescence filter can be installed in the B&W and Color camera modules. The filter is
installed by removing the objective and carefully placing the filter in the recessed opening. A
compliant washer (provided with the filter) is placed over the filter to keep it secure under the
objective.
Filter installed in an optics module (foam washer is placed on top of filter)
Note
:
The EPI camera module is supplied with pre-installed fixed filters that cannot be
removed.
