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- special scanners:
  for glass tubes
  for image acquisition
  seam detector 

- Scratch Detector




Glass-Scanner I-Mike

Glass-Scanner I-Mike (model 1102)


I-Mike provides contact free measurements of the relevant parameters of transparent objects (tubes, rods, bottles…).

Within each measurement interval the transmitter scans the measurement field by moving a laser beam exactly parallel to the optical axis. Located behind the measurement object, the receiver is facing the transmitter. He detects the incoming beams aside and through the object. The diameter and position of the object is calculated by evaluation of the object's shadow.

Wall thickness or inner diameter of transparent tubes is measured by evaluation of the beam paths through the object. In the case of glass rods, the refraction index and two diameters are measurable (parallel and perpendicular to the optical axis).

Application Fields


Precise measurements during production (even if the objects are still hot) allow significant improvement of production quality. In various processes either a reduction of product tolerances and a minimisation of waste production was achieved.

Quality Management

The software (IMD) provides full functionality for the generation of tube inspection protocols. These include (besides diameters and wall thickness) Siding, Ovality and Bow Measurements.

Volumetric Analysis

By the use of inner diameter measurements over tube length it is possible to calculate the included volume. The usual filling of tubes is not necessary.


Measurement objects:
  • transparent (at 630 nm - 657 nm) rods, tubes and bottles,
  • deliverable scanners for indices of refraction n <1,45 or n>1.49 (e g. for PET, DURAN, N-BK7, N-F2...) ,
  • outer diameters 1-149 mm (dependant on I Mike model),
  • inner diameter > 1 mm,.
  • outer diameter of rods up to 250 mm.
Measurement values:
  • Position
  • outer and inner diameter of transparent tubes,
  • wall thickness of transparent tubes,
  • two diameter values (parallel and perpendicular to optical axis) of rods,
  • refraction index of transparent rods,
  • birefringence of transparent tubes or bottles,
  • Siding (offline; optional on line)
  • Ovality (offline; optional on line),
  • bow (offline),
  • conicity (optional).
  • 1 µm.
Measurement Range:
  • dependant on scanner type 25 mm...150 mm.
Special Features:
  • high robustness against movement of object along the optical axis,
  • minimal effort of adjustments.
  • scanner (emits the scanning laser beam),
  • receiver (behind measurement object, facing the emitter),
  • supply unit 19'' 3HU (optional, comprising a PC with Touchscreen monitor).
  • PC.
Measurement Principle:
  • telecentric laser scanner for diameter measurements (evaluation of the object's shadow),
  • measurement of wall thickness, inner diameter and the other characteriscs of transparent objects by evaluation of beams penetrating the object.

I-Mike Software IMD

Für PC (Takt > 1 GHz, Windowsab Windows 98)

Measurement Values

 Graphical Display
Tube Inspection

Tube Protocol

Functionality of the I-Mike Software (IMD):

  • Numerical and graphical display of measurements.
  • Creation of inspection protocols.
  • Design, display and printout of inspection protocols.
  • Different user levels assure that user with different skills (operators, engineers...) get a functionality that matches exactly their needs.
  • Export, printout of data, protocols and graphics.
  • Protocol of raw and measurement data.
  • Writing and reading of sensor data (simulation of measurements).
  • Semi-automatic calibration by the use of reference objects.
  • Definition of measurements.


  • Double head arrangement for tubes up to 350 mm.
  • Cross arrangement for on line measurements of Position, Siding, Ovality.
  • Conicity of tubes.

Additional information:

 Hartrumpf, M.: "Laserscanner-Meßsystem".
German Patent Application DE 198 06 288 A 1 ,(16.02.1998)

Give us the chance to show you what we can do with a demo on your site!

If you are interested in further information, a demonstration, an adaptation of this sensor or a development of a solution of your measurement problem, please contact:

mail@opos.de or write or phone to:

OPOS Optical On Line Sensors
Hertzstr. 164b
D-76187 Karlsruhe / Germany
Tel +49 (721) 971305-0
Fax +49 (721) 971305-1

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