Optical coating thickness measurement is essential in many industrial applications, from inline inspection to laboratory analysis. Non-contact technologies provide fast, reliable and non-destrutive thickness measurement for a wide range of coatings. Polytec offers advanced solutions based on photothermal, terahertz and hyperspectral imaging technologies.
Which coating thickness measurement solution fits your application?
The optimal measurement solution depends on your material, coating structure and production environment. The following overview helps you identify the most suitable technology for your application.
| Typical Applications | Application Environment | Materials & Properties | Thickness Range | Polytec Solution |
|---|---|---|---|---|
| Inline At-line Laboratory | Opaque, semi-transparent and transparent materials; solid, liquid and granular materials; metals, ceramics, polymers, wood, glass, ... | ~ 0.1 µm – 1 mm | Photothermal |
| Inline At-line Laboratory | Non-conductive plastics (PE, PP, PVC) ceramics and glass multilayer systems | ~ 5 µm – cm range | Terahertz |
| Inline At-line Laboratory | Transparent thin films organic materials polymers, oils, greases | ~ nm – 500 µm | Hyperspectral Imaging |
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For more information on optical measurement technologies and their characteristics, please see our overview of measurement methods.
Examples of industrial applications
Photothermal Applications
Terahertz applications
Hyperspectral imaging applications
Application articles from the Polytec magazine
Photothermal measurement method for opaque coatings and all common substrates
For many industrial products, the quality of coatings plays an important role. For example, the material thickness, color, gloss, or adhesion of one or more layers on a substrate
Inline measurement system for powder coatings
Powder coating quality depends on thickness and uniformity, especially at critical points. Photothermal measurement systems offer practical solutions for quality control.
Precise layer thickness measurement without referencing
For many products, coating quality is crucial—such as material thickness, color, gloss, or adhesion of one or more layers to a substrate. Regardless of their purpose, measuring the thickness or uniformity …
Products for your application
Photothermal Measurement Systems
The Enovasense system measures thickness of opaque or transparent coatings extremely quickly in the laboratory and inline applications on almost all substrates. The compact measuring head is suitable for confined spaces.
Terahertz Thickness Measurement Systems
Terahertz thickness measurement – fast, non-contact, non-destructive, ideal for multi-layers in industrial applications and process quality control.
Hyperspectral Imaging Measurement Systems
These systems use a unique combination of optical spectroscopy and imaging for precise surface analysis. Depending on the material properties, layer thicknesses can be measured non-destructively in an impressive range from 1 nm to 500 µm.
Talk to our experts
Our experts are ready to support your projects with tailored measurement solutions or support you in measuring what matters — get in touch with us today.