Information About the Sensor
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3.
Information About the Sensor
Each configured ATOS sensor, in scan direction, has defined 3D areas
within which a measuring object can be scanned. In the following,
such a 3D area is called "measuring volume" (MV).
The measuring volume determines the distance between sensor and
measuring object and the set of lenses to be used.
In practice, depending on the measuring task, different measuring
volumes might be required.
Ideally, you have camera and projector lenses that are preadjusted to
your measuring volume. In this case, you need to perform no or just
very few steps for adjusting the sensor.
A complete sensor setup is only required if the corresponding set of
lenses has never been adjusted before or is decalibrated (wrong ad-
justments).
For a complete sensor adjustment, you need to adjust the angle rela-
tions of the cameras and set the focus and aperture of the lenses.
Then, the complete system is calibrated by means of calibration pa-
nels or calibration crosses. If the measuring volume is adjusted suc-
cessfully by calibration, you may start a measuring project.
The sensor adjustment is supported by the software. The software de-
termines all necessary parameter settings.
In order to achieve large, medium and small measuring volumes, the
sensors support two or three different camera positions (Small Objects
SO
for small measuring volumes,
400
for medium measuring vo-
lumes, and
800
for large measuring volumes), see system types 2 and
table 3.1.
For camera position
400
or
800
, you may install measuring volumes
with two different camera angles. For example ATOS II/400/MV560
with
27°
and ATOS II/400/MV 1000 with
15°
.
The eccentric stops ( , , , , ) are factory-preadjusted.
Never loosen these stops , , , or , as only an authorized
specialist is allowed to adjust them.
