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DEPTH OF FIELD
Through the glass at the front of the scanner, safe, low powered laser beams are
projected in a complex pattern that resembles a spider web. Each of the five
scan fields that generate the scan pattern extend to a range of 127mm (5.0").
This range begins from the face of the scanner window and extends from the unit
for a distance of 127mm (5.0") measured along the scanning beam at the center
of each scan segment. This 0.0mm - 127mm (0" - 5") range is the depth of field
for the MS860i scanner (see figure 6).
The scan pattern is projected at an angle away from the touch plate
(approximately 20 degrees, overall). As the scan fields move outward, they
expand. Like an image expands from a film projector as it moves toward the
screen at a movie theater, the scan pattern projects out to a well-defined region.
Any label that is facing toward the scanner can be read at any point within the
scanning field.
Figure 6: Depth of Field