Chromatic Focus Point / Line


  • Measurement of highly reflective, absorbent and transparent materials
  • Measuring results are independent of the surface properties
  • Especially suitable for fast and precise measurements on reflective surfaces, lenses, prisms and other optical devices
  • Flexible probe configurations for highly customized applications

Technical Data

Sensor principle

Optical-axial (chromatic aberration)


Permissible probing error up to 0.25 µm



From the evaluation box a), the light from a broadband light source b) is projected via a fiber coupler c), an optical fiber d) and imaging optics e) onto the workpiece (position 1), 2) or 3)). The intensity of the reflected light is highest for the color corresponding to the distance from the workpiece f). This is evaluated via a spectrometer g).


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