MATRIX 210N™ REFERENCE MANUAL
2.7.5 Laser Marking/Etching Technology
Figure 28 - Data Matrix Code Directly Marked on PCB Surface by Using Laser Etching Technology
CAUTION: If application codes must be read which are produced by Laser
Marking in real time, use Matrix 210N models incorporating YAG Filters in
order to avoid burning the CMOS sensor.
2.8 EXTERNAL LIGHTING SYSTEMS
In some direct part marking applications best reading results are obtained by using an
external lighting system.
The LT-700 Linear Array Lighting System provides a high intensity light source designed for
the following applications:
with uneven, noisy and scratched surfaces
where dot peening or laser etching codes are directly marked onto metal surfaces or
PCBs and need to be highlighted. Here the use of more than one LT-700 at different
positions can remove any shadowing effect.
in the presence of highly reflective surfaces (metal, glass, etc.) causing direct reflections.
Low light path to surface angles strongly reduce direct reflections.
Figure 29 - LT-700 Linear Array Lighting System
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