B-70265EN/02 8.LASER OPTICAL SYSTEM
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8.7 ALIGNMENT OF THE GUIDE LASER
Make an adjustment so that the center of the CO
2
laser beam is
aligned with the center of the guide laser beam.
(1) Attach an acrylic plate at about 3 to 10 m away from the beam
outlet of the laser oscillator, and collect the burn pattern of the
CO
2
laser beam (rated output, CW, irradiation period of 0.1
second). Do not attempt to touch the acrylic plate after beam
pattern collection.
(2) By turning the X-axis and Y-axis adjustment screws, align the
guide laser beam with the center of the burn pattern obtained in
step (1). Turn the adjustment screws using a 2-mm hexagon
wrench.
(3) Compare the optical axis of the guide laser beam with the center
of the burn pattern of the CO
2
laser beam, obtained
approximately 1 m from the laser oscillator outlet. If the
difference between the two beam centers is within ±2 mm, the
optical axis adjustment can be regarded as being successful.
(4) If an optical axis mismatch is detected in step (3), adjust the
optical axis of the guide laser beam by moving the plate and
stage of the guide laser unit. Then, repeat the adjustment
procedure from step (2).
Fig.8.7 Guide laser adjustment position