Clear Polymer Thickness Measurement Posted in: CCS Prima Confocal Displacement Sensor – Tags: ,

A manufacturer of a clear polymer used to make food wrapping material is using white light confocal probing to measure the thickness of the material as it’s being made. The customer is using the CL5 MG35 white light confocal probe.

The probe has a 12 mm measurement span with a resolution of 400 nanometers and an accuracy of +/- 800 nanometers with a spot size of 14 microns. The unit uses an LED white light bulb and can measure up to 2,000 samples per second with faster options available.

The white light confocal sensor is completely passive and is very stable connected with a fiber optic cable. The technology can measure the front face and the second face of the material on 350 micron and above film. The worst case thickness accuracy is twice the single-sided accuracy for the 2 faces, or +/- 1.6 microns. The controller can input the index of refraction for the material to provide accurate measurements.

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CCS Prima Confocal Displacement Sensor

The CCS white light confocal displacement sensor is the most precise measurement system from Acuity. Using white light LED, the system employs a unique measuring principle that separates emitted light into different colors and then uses a detector to identify the reflected color signal.

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