Measuring Modes

The main measuring mode for the CHR and CCS sensors is "Distance" mode for measuring the altitude of the sampled point. The sensor is controlled in this mode on a COFRAC (French Agency for Acreditation) certified calibration bench, and a certificate of control results is supplied with each optical pen.

The "Thickness" mode allows measuring the thickness of flat transparent samples. In this mode the refractive index of the sample must be known.

Measurement mode	Distance ("Confocal 1 surface")	Thickness ("Confocal 2 surfaces")
Optical principle	Chromatic-coded confocal imaging	Chromatic-coded confocal imaging
Compatible optical pens	all	all
Compatible controllers	all	all
Availability	standard	standard
Metrological test with certificate	yes	no
Parameters measured simultaneously	Intensity, Distance	Intensity1, Distance1, Intensity2, Distance2, Thickness
Applications	distance measurement (microtopography, profilometry, roughness)	thickness measurement from 7 µm *

* Minimum thickness measurement depends on the optical pen