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2 - 6
SE955 Integration Guide
Laser Clear Aperture
The laser clear aperture is the area on the exit window that intersects the exit beam envelope as shown in
Figure
2-3. Note that at any instance in time, the outgoing laser beam is collimated and approximately 1 mm in
diameter, while during scanner operation the beam is constrained within the exit beam envelope. For
dimensions and information about clear aperture calculations see
and
Exit Window Positioning on page
Exit Beam Envelope
Figure 2-3
Collection Clear Aperture
As shown in
Figure
collection beam envelope. In both cases, ensure that the paths are free of obstructions. Also incorporate a
minimum of a 0.020" to 0.040" spacing between the clear apertures and the window borders.
Entrance Beam Envelope
Figure 2-4
2-13.
2-4, the collection clear aperture is the area on the exit window which intersects the
Exit Window Characteristics on page 2-12
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