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R-4106.A
MECHANISM
ANO
PRINCIPLE
3. UW·tube
o Inclination 5.2° of
prisms
@
and
@
from
the
optical axis,
which
is
made
possible
by
the
parailel light
rays
after @ and
@.
to
avoid
goast
images
caused
by
retlection
on
the
prisms.
• Optical
axis
of
@,
@
in
Photo·tube, though
cause
haJving,
on
account of the inclination
of
@
and
@,are
assumed
to
be
that, if not
such
halving
would
be
considered, i.e. the
elongation
of
the
axis
of @
@.
•
As
shown
in
Fig.
14,
the
images
at
OL
and
ÜR
are
produced
by
the
parallel
ray
beams between
@,@)
and
@,
@),
aswellas
@),@)
and
@,
@.
•
Image
position
Qp
of Photo-tube
is
adjusted
by
changing
its tube length
using
a colllmator,
so
that the
image
is
located
on
the
focal
point of
@, @.
•
Image
positions
ÜL
and
ÜR
in
the binocular body
are
adjusted
by
rneans
of eyepiece
sleeve
cover
@,
so
that they
are
parfocal with
t.!te
image
Qp
of Photo·tube.
•
UW-tube
permits observation of a
wide
viewfield of
26.Srnm
in
dia.,
using
IOX
objective.
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20
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