Laser Triangulation chart

Antaris series:  The best sensor by far

The ANTARIS series sensors work by the triangulation principle.  They provide precise results on virtually all materials, as the integrated DSP adapts the measuring parameters to changing colours and surfaces in real-time.
Due to their large measuring distance, the ANTARIS sensors are excellently suited for measuring in hostile conditions, e.g. on red-hot materials.
The ANTARIS simplifies measurement of dimensions such as distance, thickness, width, height, flatness, and diameter with its easy setup and interface modules.
Multi-sensor applications, such as step height, thickness, and straightness, which in the past would have required external processors and programming, are now done easily in the ANTARIS using the on board DSP and multi-drop capability. The ANTARIS provides unrivalled real-time process monitoring, and immediate and precise feedback of process parameters, allowing corrections to be made quickly with minimal downtime. Simple control tasks, like loop control and accept/reject, are a breeze using the programmable discrete outputs from the ANTARIS.


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Measuring range, stand off and accuracy are variable and will be optimised

Antaris S Measuring Range (mm) Offset (mm) Repeatability (μm) Measurement uncertainty (accuracy) [μm]* / %**
Antaris 500 500 620 ± 50 ± 140 / 0.04
Antaris 800 800 500 ± 100 ± 320 / 0.04
Antaris 1250 1250 750 ± 150 ± 500 / 0.04
Antaris L Measuring Range (mm) Offset (mm) Repeatability (μm) Measurement uncertainty (accuracy) [μm]* / %**
Antaris 500 500 890 ± 70 ± 200 / 0.04
Antaris 1000 1000 1000 ± 130 ± 400 / 0.04
Antaris 2000 2000 1300 ± 260 ± 800 / 0.04
Antaris 4000 4000 1550 ± 520 ± 1600 / 0.04

*  derived from DIN 32877, average from 64 single values   **% of measuring range   






 Technical Data
Laser type, wavelength Diode, 680nm, red
Laser power 1mW (optional 3 ... 7mW)
Laser class 2 (hight power 3R, 3B)
Sampling frequency up to 4kHz
Interfaces Analog 4 ... 20mA (galv. separated), digital RS 485 (optically isolated
Power supply 18 ... 30VDC, <250mA
Enclosure rating IP 65
Dimemsions (LxWxH)
ANTARIS S:  320mm c 200mm x 124mm
ANTARIS L:  560mm x 200mm x 124mm
Weight (incl. bracket) S:ca. 9.8kg  L:ca. 13.4kg
Ambient conditions 0 ... 40⁰C, 35 ... 85% rel. humidity, non-condensing



The ANTARIS sensors operate according to the triangulation method. A laser beam emitted from the sensor creates a visible spot on the surface of the measured object. Depending on the distance, a CCD line scan camera besides the laser ”views” this spot under varying angles. Using this angle and the known distance of laser and camera, the Digital Signal Processor computes the distance between the sensor and the measured object.

In contrast to conventional laser sensors, LAP ANTARIS sensors combine a high resolution CCD line scan camera with a Digital Signal Processor (DSP) to provide pure digital acquisition and processing of measured values. Sophisticated design using proprietary engineered materials ensures the highest stability without temperature drift and provides shock resistance for use in harsh industrial environments.

Width Measurement                                           Length Measurement

Application - Width measurement     


Camber                                                                        Side Profile

Application - Camber measurement    

  • RS232 ASCII
  • Ethernet UDP
  • Profibus DP
  • Air purging housing to keep sensors clean and cool
  • Customer-specific software
  • Panel and large displays
  • Special optical systems for hot and red-hot materials
  • Measuring frames

    Air purge housing for Antaris
Air Purge Housing

This additional housing protects ANTARIS sensors from dust, dirt and temperature influence. Airflow should be produced by a fan; compressed air is not the first choice.
Depending on ambient conditions, the airflow can be heated to prevent fogging and icing or cooled to increase the lifespan of the sensor, especially the laser diode.

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