Optical sensors for measuring slope and roughness

Nobis high resolution optical distance sensors are used to measure:

  • dimensions: distance, radius, step height, slope, form error, contour, etc.
  • double interfaces: transparent surfaces, thickness, topography under varnish.
  • surface texture: roughness, waviness, grains, etc.

on any type of surface (reflective, opaque, multi-material).

Unlike most optical sensors, Nobis sensors are capable of measuring slope (for example on an aspheric lens) and making roughness measurements that are very closely correlated with measurements made by traditional tactile sensors.

Applications

Suitable for micro and nanotechnology applications in both laboratory and production environments, there is virtually no limit to the applications of Nobis® technology in industry and research. They include:

  • Microstructures with vertical steps and high aspect ratios (MEMS LIGA structures, pressure sensors, airbag accelerator sensors, etc.)
  • Hidden surfaces under transparent layers (metal pigments in lacquers, etc.)
  • Sharp surfaces (diamond abrasives, etc.)
  • Sensitive, soft and fragile surfaces (micro-lenses, paper, films, etc.)
  • Eroded surfaces (epoxy, plastics, etc.)
Selected features
  • Based on chromatic confocal technology.
  • High vertical resolution down to 2 nm.
  • Vertical range from 420 µm to 10000 µm.
  • Working distance from 5 mm to 67 mm.
  • Range of sensors includes an angled sensor.
  • Dedicated or Volcanyon Modular Controller.
  • Not sensitive to ambient or stray light.
  • No mechanical filtering.
  • White light source - no health or safety issues.
  • Multi-environment: laboratories, production environments (integration using dual RS232 and USB connections, analog outputs, synchronization inputs/outputs), hazardous environments.