1.3.
Technical Data SMT 4
Standard configuration
Objective: Planachromat
1 x
Working distance
100 mm
Eyepiece
GF- PW 10x/ 20
Tube
Factor 1,6x
Factors at magnification changer
0,32x 0,63x 1x 1,6x 3,2x
Total
magnification
V
t
= V
obj
x V
eyepiece
x V
tube
x V
changer
5x 10x 16x 25x 50x
Object field (mm)
40 20 12,5 8 4
Depth of field (mm)
5,1 1,3 0,5 0,25 0,1
Adjustable range of coarse drive 45 mm
Max. High of objects
140 mm
Interpupillary adjustment 55...80 mm
Adjustment ametropia
+/- 6 dpt
Dimension in mm 320 x 320 x 380
(W x D x H)
Weight
6,6 kg
1.4. Assembly and Operation SMC 4
The SMC 4 has an objective that continually
corrects the picture distance and has both path
of rays in common. The object being viewed is
located in the front focal plane.
While the axes of both of the partial bundles
encompass an angle of 12.5° in front of the
objective, they run parallel behind the objec-
tive. This enables the installation of an
enlargement changer in form of a pancrat.
Two separate pictures are designed in the tube
system, which are arranged in every path of
rays behind the enlargement changer, and are
observed with two separate eyepieces. One
mirror system for the obtainment of vertical and
horizontal pictures and one for the deviation of
the path of rays at 45° is lying between the
tube system and the eyepiece.
The unit is comprised of the microscope middle
part, which contains the enlargement changer
(Zoom-objective). This can be operated right or
left with a turning knob, from which the acti-
vated magnification of the pancrat can be
read.
The objective is screwed onto the middle part
of the microscope. A binocular tube is at-
tached, in whose braces an eyepiece pair is
inserted. The eyepieces braces of the binocular
eyepiece can be swivelled in order to fit them
to the individual optic distance of the observer
and are equipped with dioptre rings for com-
pensating the individual accommodation and
ametropia. The corresponding eyepieces are
inserted in them.
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