-15-
4. Assembling and Operation of Accessories
MT-50
Series
4-1
Assembling and Operation of Phase
Contrast Flapper
1. Keep the phase contrast flapper
①
face up
(upward the face with word), insert it from left to
right into the condenser flapper socket as the
direction of the arrow pointed (see Fig. 26).
2. Every diaphragm or hole has its corresponding
position, one diaphragm or hole is inserted into
the center of optical path when it sounds “ka-da”
during phase contrast flapper rotating.
3. When observing phase contrast, keep the
adjusting ring of the aperture diaphragm
②
indicator to “PH” position.
★
Each magnification phase contrast objective
is used with matched ring diaphragm (Like
10X phase contrast objective corresponding to
10X ring diaphragm).
★
As the ring diaphragm is pre-centered, it
doesn‟t need to be adjusted in operation in
normal cases.
4-2
Assembling and Operation of Disc Phase
Contrast Condenser
1. Assembling of Condenser please refer to
2-2-1
,
change the objective on the nosepiece to phase
contrast objective. Center the phase contrast
condenser before use.
2. Rotate the phase contrast ring
②
to “BF”
position in bright field observation. When it
sounds “ka-da” in rotating, it indicates that one
diaphragm or hole is rotated into the center of
optical path (see Fig. 27).
Fig. 27
Fig. 26
