STIL's New Chromatic Confocal Point Sensor Systems

June 2011

New Stil_Chromatic_confocat_Point_Sensor

Noncontact Thickness and Distance Measurements

High Resolution up to 8nm

Ideal for All Surfaces and Materials

Noncontact Thickness and Distance Measurements
High Resolution up to 8nm
Ideal for All Surfaces and Materials
The Chromatic Confocal Sensor Systems use the principles of confocal imaging and chromatic coding of the optical axis to determine the position or thickness of the target surface. Chromatic coding of the optical axis takes advantage of chromatic aberrations to focus a broadband light source on multiple points within the measuring range. The back scatter is collected and imaged through a spatial filter onto a spectrometer. The spectral response of the spectrometer defines the position of the surface at which the back scatter occurs.
 
Each system includes a controller, optical pen, multimode fiber cable (2.8mm diameter, 3m length, 20mm bend radius) to connect the optical pen to the controller, USB cable, RS-232 cable, calibration report and USB memory stick with user manual and software.
 
The Chromatic Confocal Sensor Systems work on virtually any surface and material including transparent, opaque, reflective, rough and polished surfaces. For metallic surfaces, we recommended using #83-108 Optical Pen System particularly when measuring roughness or requiring high resolution measurement. Each system is designed to work in two modes: Distance and Thickness. The principal mode to which each system is calibrated is the distance mode (calibration certificate is included). The thickness mode is intended to measure thickness of transparent samples. In this mode, each system measures the distance to the front and back surface of the samples simultaneously and computes the thickness of the sample as the difference between the two positions. The Chromatic Confocal Point Sensor Systems also feature trigger modes that allow them to synchronize with external scanning devices.

 

 
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