Crosshair burn pattern:
The crosshair uses a small diameter copper wire to form a cross at the center of the OD of
the crosshair. The laser beam reflects from the surface of the copper. A laser burn card
is placed at the output side of the crosshair and the laser is pulsed. The result is the laser
beam will leave a mark on the card that represents its location in respect to the crosshair.
By making adjustments to the source, (i.e. Beam bender mirror assembly adjusting
screws) changes are made to the point of the laser beam thus affecting its location in
reference to the crosshairs.
Pulsing the laser:
During the alignment procedure it is necessary to pulse the laser so that the laser beams
physical location can be determined. On the handheld keypad the TEST button allows
the technician this capability. When the TEST button is pressed the power is entered and
then the pulse duration (how long the laser is on) and the start button is used to pulse the
laser for the power and time that is entered. The power and duration are determined by
how much is needed to get an adequate burn on the paper. This function stays active
until the CANCEL button is pressed on the keypad.
Laser Alignment Steps:
Follow these steps in order and you will have a successful beam alignment. As you gain
experience some can be combined or skipped.
1)
Remove collimator/beam expander, all mirror assemblies except BB2, and
lens holder from system
2)
Install laser head
3)
Install collimator alignment tool
4)
Align laser head to BB1 using the collimator alignment tool
5)
Install collimator/beam expander
6)
Check adjustment of collimator/beam expander
7)
Remove collimator alignment tool
8)
Install BB1 mirror block assembly and adjust for x-axis parallelism to BB2
9)
Install BB3 mirror block assembly and adjust beam to BB4
10)
Install BB4 mirror block assembly and adjust for y-axis parallelism to BB5
11)
Install BB5 mirror block assembly and adjust beam to BB6
The next steps are specific to the head style. MultiCam offers a
non-capacitive
and
capacitive
head option. Follow the steps that pertain to the head style your system has.
Non-capacitive head option:
12)
Install BB6 mirror block assembly and tip retainer crosshair and adjust BB6
for z-axis parallelism and adjust tip retainer crosshair for center
13)
Test alignment (four corner test)
14)
Install the tip retainer, tip, and insert lens holder and adjust for center
15)
Test system
Capacitive head option:
