Table of Contents
Advertisement
Model
5528,4,
Squareness
Measurements (In a
Vertica
l
Plane
)
13-14
~
•
~
~
I
Figure
13-9.
Two
Dots
all
tile
Oplical
Square
22.
Translale the laser Head
vertica
ll
y and
horizon
tall
y
10
keep the Laser beam from being
clipped by the
alignment ring on
the
Straigh
tness
Re
lroreflector.
Check
this
by
making sure
you can't
see
the
beam on
the Interferometer
surface
that fa
ces
the Relroreflcctor.
Any
translation
of
the Laser Head
will cause the
two
dots
to
move
from
their
position
on the
Optica
l
Square,
so
you
will
again
have to rotale
and translate the
laser Head (i.e
.•
repea
t
step
"16"
and
step
"
17"
several
times
)
before you are
done
.
You
are
finished
wilh
this
procedure when
the beam
goes
through the
Interferomete
r
wilhout being clipped, and the
two
dots
are
symmetrical
about
the
Optica
l
Square's top slot
(see
Figure
13-9.)
Procedure For Installing
the Straightness
Reflector
1.
Select the small
aperture for the
exi
t pori
on
the laser Hcad. fYou
ca
n
also
do
this
using the
full
beam from
the
large
aperture.)
2.
Make
sure
the
Interferometer
bezel's
scribed line is
oriented 90
degrees relative to the slot
in
the Optica
l
Square.
3.
Move
the
Optics to the
near
end of
travel. Position
the
Interferometer
as close as
you
can to
the
Optical Square.
4.
Attach
the
Reflector
10
its
mounting
hardware
as
shown
in
Figure 10-4.
5.
Orient
the Reflector
10
make
a
vertica
l measurement
along
a horizontal
axis.
Advertisement
Table of Contents
