Diffuse On Axis
Light™--DOAL¨
With the DOAL's coaxial
(on axis) illumination,
light rays reflect off a
beam splitter directly
on to an object at
nearly 90°. With this
coaxial lighting
approach, specular
surfaces perpendicular
to the camera appear
illuminated, while
surfaces at an angle to
the camera appear dark.
Non-specular surfaces
absorb light and appear
dark.
The new DOAL-50 V2
(Version 2) expands
application
capabilities. Using the
same on axis lighting
technique, the DOAL-50
V2 delivers up to twice
the light intensity of
first generation DOALs.
This high intensity
coaxial light enables
applications that were
previously too
intensity-dependent for
beam splitter derived on
axis lighting
techniques.
Additionally, the V2
DOAL's fan-free design
results in a quieter,
more reliable unit
suitable for
environments where
airflow disruptions are
not allowed (e.g. clean
rooms) and where air
born dust penetration
threatens the life of
fan cooled devices.
Collimated On Axis
Light--COAL
COAL modules provides
collimated illumination
in the same optical path
as the camera. The COAL
is designed for
applications requiring
coaxial bright light.
For Flat
Specular Surfaces
DOALs provide diffuse,
uniform illumination for
flat specular surfaces.
By providing greater
uniformity than
conventional sources,
DOALs increase machine
vision accuracy and
repeatability up to
200%.
