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High resolution Non-contact 3D Measurement System
STIL Optical Pen

Feature / Measurement Principle / Application / Specification

STIL CCS & Optical Pen


Measurement Principle(Chromatic Confocal Sensing)

Measurement Principle

Chromatic Confocal sensing (STIL patent) was invented in 1995 and has since been worldwide acknowledged as an accurate and reliable technique for non-contact distance and thickness measurement.
It is one of the very few non-contact techniques for 3D metrology recommended by the ISO 25178 international standard.

A chromatic lens L generates the image of a point white-light source W as a continuum of monochromatic images located on the optical axis (“Chromatic coding”).
A sample is located inside the color-coded segment and its surface scatters the incident light beam.
The backscattered light passes through the chromatic lens L in the opposite direction, and arrives at a pinhole P which filters out all wavelengths except a single wavelength, λM.
The collected light is analyzed by a spectrometer S. The sample position (point M) is directly related to the detected wavelength.


Roughness In-line Control Thickness Autofocus Microtopography
Roughness In-line Control Thickness Autofocus Micortopography
Lens Form Measurement
Lens Form Measurement(Spherical,Aspherical)


Controllers for configurable sensors

Modular Optical Pen