Non-contact optical sensors – Chromatic Focus Point

The large measuring ranges of the Chromatic Focus Point Sensor enable fast scanning without controlled tracking of the sensor to the workpiece surface. The sensor can be permanently mounted or used on the stepless Werth rotary/tilt head for high-resolution measurements on steep flanks with 2000 measurement points/s.
Light from a broadband light source b) is projected from the evaluation box a) onto the workpiece (position 1), 2) or 3)) via a fibre coupler c), an optical fibre d) and an imaging optic e). The intensity of the reflected light is highest for the colour that corresponds to the distance from the workpiece f). This is analysed using a spectrometer g). The Chromatic Focus Line sensor works according to the same principle and offers a unique combination of high measuring speed and low measurement uncertainty.