The
CDI is a unique (and patented) lighting system from Northeast
Robotics with unrivalled performance in the illumination of
difficult reflective objects. It combines a diffuse dome illuminator,
with an on-axis light to fill in the camera hole at the top.
These two light sources can be balanced to achieve a number
of different effects that cannot be achieved with other illumination
systems. The CDI is available in both LED and fibre-optic variants.
Ray
diagram for the CDI system
CDI
Series
Description
Colour
NER-CDI-150/25-LED
150mm diameter,
imaging area is 25mm dia
NER-CDI-200/75-LED
200mm diameter,
imaging area is 75mm dia
NER-CDI-175/125-FO
175mm diameter,
imaging area is 125mm dia
NER-CDI-300-FO
225mm diameter,
imaging area is 150mm dia
NER-CDI-300-FO-4
As above
with 4 camera ports
NER-CDI-225-FO
254mm diameter,
imaging area is 254mm dia
Benefits
of using the CDI Illuminator vs. systems.
Power supplies / Light sources
Below
you can see the resulting image effects when using different
illumination techniques to examine the surface of a ball
bearing for defects. In all but the CDI, you can see the
lighting system reflected in the ball bearing, obscuring
the true surface detail of the object.
In natural
light
Fibre optic
ring light
Fluorescent
ring light
Dome illuminator
On-axis illuminator
CDI illuminator
The LED version of the CDI requires a variable
power supply in order to balance the two light sources. This
could be either the NER variable power supply, or the Gardasoft
600 variable lighting controller.
The fibre-optic version requires a light
source that we can also supply.
