Laser sensors for metals and rough surfaces Product Technology

A small light spot diameter is not recommended for measurements on shiny metals or machined surfaces that show small micromachining marks. Micromechanical surface properties allow no homogeneous reflection which results in noisy or unstable measurement signals.

For these requirements, laser sensors with an oval light spot of only a few millimeters width, similar to a short »laser line«, are recommended. The oval light spot combined with special software algorithms filter out disturbances caused by surface roughness, defects, depressions or smallest holes. In addition, this type of sensor is suitable for distance measurements on structured surfaces, i.e. when the distance to the surface and not the structure of the surface is to be measured. The oval light spot is not influenced by surface structures and ensures constant and stable generation of measurement values.

Catalog optoNCDT Laser Sensors

Anti speckle laser sensor – optoNCDT 1750LL

The optoNCDT 1750 LL is a special laser sensor for shiny metals and structured surfaces. The oval laser spot facilitates a particularly easy and precise measurement on shiny metal surfaces or structured objects.

Characteristics

Measuring ranges (mm): 2 | 10 | 20 | 50
Linearity from 1.6µm
Resolution max. 0.1µm
Adjustable measuring rate up to 7.5kHz
Analog and digital output
Precise measurements on metal surfaces
Special lens for oval-shaped laser point
Distance measurement on structured surfaces
Real-time compensation on changing surfaces (RTSC)
Integrated controller

Data sheet optoNCDT 1750LL

New: New: Smart laser sensor for shiny metallic objects – optoNCDT 1420LL

The compact optoNCDT 1420 LL laser sensors are designed for measurements of shiny metallic and rough surfaces. The oval light spot, which resembles a short laser line, can better compensate for unevenness such as texture and roughness. Special software algorithms filter out interference caused by surface roughness, defects, depressions or the smallest holes.

Characteristics

Laser sensor with special lens with oval light spot (short laser line)
Precise measurement on metal surfaces and structured surfaces
Active Surface Compensation for changing surfaces (ASC)
Integrated controller
Measuring range (mm): 10 | 25 | 50
Linearity from 8 µm
Adjustable measuring rate up to 4 kHz
Digital interface (integrated): RS422 (16 bit)
Digital interfaces (optional connection via interface module):
PROFINET, EtherNet/IP
Scalable analog output

Data sheet optoNCDT 1420LL

Extreme dynamic laser sensor with anti speckle feature – optoNCDT 2300LL

optoNCDT 2300LL laser sensors use a very small laser line instead of the common laser spot. Therefore, the optoNCDT 2300LL is also very well suited for precise distance and displacement measurements on glossy, porous or rough surfaces. Its high measurement rate up to 49kHz makes it possible to use the sensor in high speed processes. Parameter setup of the laser sensor is effected via web interface which is accessible via the Ethernet interface. The web interface offers numerous possibilities for processing measurement values and signals.

Characteristics