Chapter 2 Linear Measurements
Mounting and Aligning the Optics on the Target Machine
2-20 Measurements Reference Guide
Aligning the optics
To align the optics on the target machine, follow these steps:
1 Set the laser head’s upper port to the small aperture by turning the upper
aperture control (Figure 2-13).
2 Rotate the target into position on the laser head’s lower port by turning
the lower aperture control.
3 Set the laser head’s turret ring to OTHER.
4 Adjust the laser head so the beam enters the lens on the interferometer
and the return beam is on or near the target on the laser head’s lower
port.
Figure 2-13. Front panel of the laser head
5 Adjust the interferometer assembly or the laser head so the return beam
(seen as a dot on the laser head) is centered on the laser head’s target.
1
Turret ring set to
OTHER
2 Upper aperture
control
3 Upper port
4 Lower port with
target showing
5 Lower aperture
control
STRAIGHT
AVOID EXPOSURE
LASER RADIATION IS
EMITTED FROM THIS APERTURE
LASER ON SIGNAL
OTHER
4
5
3
2
1
Agilent
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