CHRomatic Confocal Principle for Distance Measurements

A white light source is used to illuminate the surface of the object under test. The light travels via fiber from the CHRocodile control unit to an optical probe which then spreads the focal length over a discrete number of points creating a full spectrum of light as shown in the graph. Based on the wavelength of the reflected light, a very precise distance measurement can be taken up to 66,000 times per second. The optical probe determines the measuring range, or focal depth of the spectrum. Because of the high numerical aperture of the probes and dynamic range of the sensor, it is possible to measure on nearly all materials.

 

Applications:
  • Halogen, xenon or LED sources
  • Up to 66kHz measurement rate
  • Measurements from a few nanometers to 25 millimeters in range
  • Angle to measurement surface: up to 45o
  • High lateral resolution: less than 1μm
  • Types of materials: glass, metal, leather, paper, liquid
  • Integration-ready for topography & metrology applications
  • Multi-channel systems available

 

CHRocodile C

Precitec CHRocodile CPrecitec CHRocodile C custom stand, measuring thickness of a glass wafer 

The image on the right shows the CHRocodile C on a custom stand, measuring the thickness of a glass wafer. 
The ultra compact CHRocodile C sensor with its robust and integrated design offers high precision distance and thickness measurements.
CHRocodile C is specially suited for industrial inline use and easily integrable into any kind of inspection machine.
The extraordinary high dynamic range and the outstanding signal-to-noise ratio of the CHRocodile sensors ensure the best measuring results on any kind of surfaces.
Thanks to its compact dimensions and excellent performance/price ratio, CHRocodile C is the ideal alternative to classical laser triangulation sensors.

 

The sensors below require Optical Probes:

 

CHRocodile S / SE

The CHRocodile SE and S optical sensors are the fast all-rounder with an excellent cost/performance ratio.  They are perfectly suitable for demanding measuring tasks, like non-contact measurement of topography and layer gauge. The senor implements two different measuring procedures and thus provides gauge measurements of 2 µm to 37 mm. The exceptional high dynamic and the excellent signal/noise ratio of the CHRocodile sensors provide the best measuring result on various strongly reflecting and strongly steep surfaces.

 

CHRocodile 2 S / 2 SE

Next generation models of CHRocodile sensors offering up to 66.000 measurements/second. With a white light LED they are ideal for non-contact surface profiling and thickness measurements.
The extraordinarily high dynamics range and excellent signal to noise ratio of the CHRocodile sensors ensure the best results on surfaces with differing reflectivity and from different angles. Sensors can be simply switched from chromatic-confocal mode to interferometric mode, and are universally applicable in quality assurance and production.

 

CHRocodile E

The proven optical sensor CHRocodile E is perfectly suitable for non-contact measurement of topography and layer thickness. The senor implements two different measuring procedures and thus provides gauge measurements of 1 µm to 37 mm. The exceptional high dynamic and the excellent signal/noise ratio of the CHRocodile sensors provide the best measuring result on various strongly reflecting and strongly steep surfaces.

 

CHRocodile LR

The proven optical sensor CHRocodile LR is perfectly suitable for non-contact measurement of topography and layer thickness. The sensor implements two different measuring procedures and thus makes gauge measurements of 30 µm to 1200 µm possible and distance measurements with a lateral resolution in the sub-micro meter range. The strong light source and exceptional high dynamic and the excellent signal/noise ratio provide the best measuring result on various strongly reflecting and very slanted surfaces.

 

CHRocodile M4

The proven optical sensor CHRocodile M4 is perfectly suitable for non-contact measurement of topography and layer thickness. It is designed specifically for industrial inline application with up to 4 channels in a 19″ insertion. Two different types of modules are available: High Sensitivity and High Resolution. Das CHRocodile M4 High Resolution implements two different measuring procedures and thus makes gauge measurements of 1µm to 37 mm possible. The CHRocodile M4 High Sensitivity captures the layer gauge of darker materials (e.g. brown container glass) at the full measuring rate.

 

Additional Information:

CHRocodile C Data Sheet
CHRocodile S Data Sheet 
CHRocodile SE Data Sheet
CHRocodile E Data Sheet
CHRocodile LR Data Sheet
CHRocodile M4 Data Sheet
CHRocodile M4 Data Sheet
Precitec CHRocodile Distance Application

 

 

 

 

 

 

 

 

 

 

For your demonstration please contact Armstrong Optical (44 (0)1604 654220) or CLICK HERE

Price: £0.00