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The ConoLine is a co-linear
measuring sensor based on conoscopic holography. It
provides a 2D profile in a single run and a full 3D
surface area profile in a single axis scan. The ConoLine
profiles deep grooves, holes and sharp angles precisely
and is designed to produce a set of precise simultaneous
profile measurements. When scanning an object on a moving
belt, these features make possible the outstanding results
achieved by the ConoLine.
Optimet's ConoLine also excels at locating objects that
are in proximity to each other and measuring their relative
placement. Such operations are very difficult to perform
using today's line triangulation-based probes.
As opposed to cameras that are
unable to differentiate objects with low contrast features,
the ConoLine measures actual distance and thus achieves
remarkable results.
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Engraved letters
on tablet using camera
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Engraved letters
on tablet using ConoLine
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The ConoLine is a non-contact OEM measuring
system that is easily integrated into end-user products.
This
system offers:
- Fast measurement rates (up to 18,000
points per second)
- Extensive angular range coverage
(up to 170°)
- Line resolution of 600 points per
line
- Calibration data storage for multiple
lenses
- 3D profile obtained using only one
scan axis
With its interchangeable lenses, the
ConoLine easily processes an impressive variety of working
ranges.
Frame grabber
- The camera of the ConoLine output is an analog video
signal. This signal is fed into a frame grabber converting
it into a digital signal presented as “tiff”
files called ‘frames’. ConoLine software
processes the frames using mathematical algorithms yielding
the Z coordinates. The Z coordinates then translate
into a profile.
The ConoLine emits a line-shaped laser
ray which is reflected by a beam splitter and hits the
object to be measured. Scattered light is reflected
from the object through the beam splitter and birefringent
crystal, and is detected by the ConoLine CCD camera.
The birefringent crystal
modifies the speed of each light ray differently in
accordance with its angle. This creates a high contrast
fringe pattern on the CCD camera. The angle of the light
ray is a function of the distance between the reference
plane and the laser spot projected on the object. The
distance therefore can be determined by analyzing the
characteristics of the created pattern.
The ConoLine software analyzes this
pattern and calculates the object’s distance.
The exact relationship between the signal on the CCD
camera and the object's distance is determined by a
careful and accurate calibration process performed for
each objective lens used.
Press this
link for more details about the technology
Last Update:
October 25, 2007
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