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Orientation
plate
~
Fig. 24
•
The dia-polarizer
rotates
3600,
and can be
detached
from
the
substage by pulling
downward.
(Fig. 25)
For
attaching
the dia-polarizer,
push it
with
the
pin
on the
dia-polarizer
into
coincidence with the groove at the position
o
of 0 on the bottom of the substage.
11) Filters
•
Put the filter with the frame into the filter
receptacle
between the
microscope
base
and the lamp housing. The accessory filters
are as shown below:
Table 2.
Use of Filters
Type of filter
Use
Diffuser
To be inserted in all cases
(Without frame)
except for lamp centering
NCB 10 filter
For general microscopy
(Color balancing filter)
and color photomicro-
graphy
ND
2 filter (T=50%)
For brightness adjustment
ND 16 filter (T=6.25%)
For retardation measure-
GIF
ment and contrast-up
in
(Green interference)
monochromatic
photo-
micrography
Fig. 26
Fig. 25
•
The analyzer rotates
1800
via the rotation
ring, the left-hand side clamp being releas-
ed.
The
rotation
angle
readable
with
accuracy of
0.10
via the vernier.
The analyzer
can be taken
out of the
optical path by pulling out by the analyzer
knob. (Fig. 26)
Substage
clamp screw
rtY
~
Fig. 27
1 2) Lowering the substage
•
Releasing the clamp screw using a screw
driver, as shown in Fig. 27, permits lower-
ing the substage as far as 32mm from the
observing
position
beyond
the
moving
stroke of the focusing device.
So, the microscope
makes it possible to
examine
the
thicker
specimens
(mainly
in episcopic
polarizing
microscopy)
and
to use the universal stage.
13) Illumination system
•
The optical system for illumination
in the
OPTIPHOT-POL
microscope is constructed
to fulfill
the Koehler illumination
require-
ments
perfectly,
and
offers
a
bright,
uniform
field
without
any change-over
manipulation.
•
Halogen lamp 12V-50W
(OSRAM
64610
or PH I LIPS 7027) is used as a Iight source.
Analyzer
knob
Dia-polarizer
Analyzer
clamp screw
Analyzer
rotation
ring
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