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Illumination System
The SIMATIC MV340 incorporates a multi-axis illumination system, designed to ensure
reliable decoding of the toughest direct part marks. Through an advanced combination of
low angle (dark field) and multi-colored dome (bright field) illumination techniques, the
SIMATIC MV340 provides even illumination of flat, shiny surfaces, enhancing embossed
features, or differentiating features on curved surfaces.
Low Angle (Dark Field) Illumination
The low angle illumination zone provides what is called "dark field" illumination, ideal for
very low-contrast marks such as laser-embossed or engraved marks. This zone is useful
on both specular and non-specular surfaces and emphasizes surface texture. The optimum
lighting angle for most marks is 30 degrees, which occurs when the SIMATIC MV340 is
approximately 0.25" away from the target mark. This illumination zone actually directs light
inward at an angle, which varies with the actual working distance and provides a good
source of low angle illumination from contact (5 degrees) to about 0.5 inch (45 degrees).
Beyond this working zone for low angle illumination this zone converts to a general purpose
illuminator due to a portion of the illumination passing straight through the light pipe. This
can be useful in providing "bright field" illumination. This zone was designed for reading
larger marks such as 1D symbols at longer working distances.
SIMATIC MV340 User's Manual
Dome Illumination
Anti-Reflective Coated Window
Low Angle Illumination
Low Angle
Illumination
Zone 2 (0.5"
and greater)
Basic Operations
Low Angle
Illumination
Zone 1
(Contact to
0.5")
3-7
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