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3 -
ASSEMBLY
As~emble
the itHtrument
in
the
following
order:
1. Set
the
body onto the yoke at the
top
of the
stand, securing it by the
~crew
provided
.
2. Set
the inclined head
on the seat at
the
top
of
the
body, and
fasten the
clamp screw tightly.
3.
Place the
de3ired stage plate in
the
receptacle
on
the stage.
The instrument is now
ready for obsen·ation by
natural
light.
For
trans-illuminated
observation,
the
whole
instrument
as
assembled above is then
set on the
illuminating
stand.
Natural or
artificial
light
will
be
reflt:cted to the
specimen
by the mirror.
If necessary
set the
iris
equipment on
the
sub-stage
base.
1'\ow
with attachment
of
hand rests
to
this
base, you are
all
ready for prolonged
observation
under
any condi.
lions.
r
l
- 4 -
A.
OPTICAL SYSTEM
The
optical system for :\lode! X
consists of objective lenses
hereinafter
referred to as
objectives)
, magnification-varying tube lenses
hereinafter
re-
ferred
to as
variables)
, and eyepieces,
as
shown below.
( ILLUSTRATION)
The beams from the specimen proceed into the Prism
P,
with an angle
of visual axis
of
12°, wherein they are turned parallel
to
each other, further
proceeding
to the variable
lens
system
(
VL and VL
1
)
,
the tube lens
system
(
PL
and
L
1)
,
and to P,. Then,
still
maintaining parallel position they
enter
porro-prisms at P3, at the last facet of which they again
assume
a 12
angle
of visual axis, forming images at the eyepieces.
As described above, the
variables are
paired on parallel optical axes.
Consequently
five magnifications are attainable, i. e. two sets of normal and
reverse
positions plue a
blank
position.
(
see
page
4)
As
to the
trans-illumination system
the sub-stage
base stores a reflecting
mirror
and
a
lOOV
40W bulb. In addition, special accessories such as an iris
apparatus
(
for
field
adjustment)
and an epi-illuminator are available.
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